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BUEHLER ® Tables for Knoop and Vickers Hardness Numbers

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Hardness Conversion Tables

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Page 1: Hardness Conversion Tables

BUEHLER®

Tables for Knoopand VickersHardness Numbers

Page 2: Hardness Conversion Tables

DefinitionKnoop Hardness: The value calculated according to the following formula from the test load at the time when the test surface isindented and the projected area obtained from the length of longer diagonal of the indentation by use of diamond indenter inthe form of a right pyramid with a rhomboid base having angles at the vertex between two opposite edges of 172° 30 ‘ and 130°:

where HK : Knoop hardnessF : test load (N)A : projected area of indentation ( mm2)c : indenter constant (the constant to obtain A from d, it is taken as 0.07028)d : length of longer diagonal of indentation (mm)

The numerical value of HK is not attached with unit.

Note: In the case where the unit of test load F is kgf, Knoop hardness shall be calculated according to the following formula:

K n o o p H a r d n e s s T a b l e

HK = 0.102 FA

=0.102 Fcd2

=1.451 Fd2

HK = Fcd2

Fd2

= 14.23 x . . . . f: kgf, d: mm)

Fd2

= 14.23 x 103 x . . . . f: kgf, d:µm)

Fd2

= 14.23 x 106 x . . . . f: kgf, d:µm)

Page 3: Hardness Conversion Tables

Table of Contents

Load 5 gf (0.005kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Load 10 gf (0.01kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Load 25 gf (0.025kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Load 50gf (0.05kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Load 100gf (0.1kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Load 200gf (0.2kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Load 300gf (0.3kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Load 500gf (0.5kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Load 1000gf (1kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Load 2000gf (2 kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Load 5kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Load 10kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Load 20kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Load 30kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Load 50kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

K n o o p H a r d n e s s T a b l e

Page 4: Hardness Conversion Tables

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

5 2846 2735 2631 2533 2440 2352 2269 2190 2115 2044

6 1976 1912 1851 1793 1737 1684 1633 1585 1539 1494

7 1452 1411 1372 1335 1299 1265 1232 1200 1169 1140

8 1112 1084 1058 1033 1008 985 962 940 919 898

9 878 859 841 823 805 788 772 756 741 726

10 712 697 684 671 658 645 633 621 610 599

11 588 577 567 557 547 538 529 520 511 502

12 494 486 478 470 463 455 448 441 434 428

13 421 415 408 402 396 390 385 379 374 368

14 363 358 353 348 343 338 334 329 325 320

15 316 312 308 304 300 296 292 289 285 281

16 278 274 271 268 265 261 258 255 252 249

17 246 243 241 238 235 232 230 227 225 222

18 220 217 215 212 210 208 206 203 201 199

19 197 195 193 191 189 187 185 183 181 180

20 178 176 174 173 171 169 168 166 164 163

21 161 160 158 157 155 154 152 151 150 148

22 147 146 144 143 142 141 139 138 137 136

23 134 133 132 131 130 129 128 127 126 125

24 124 123 121 120 120 119 118 117 116 115

25 114 113 112 111 110 109 109 108 107 106

26 105 104 104 103 102 101 101 99.8 99.1 98.3

27 97.6 96.9 96.2 95.5 94.8 94.1 93.4 92.7 92.1 91.4

28 90.8 90.1 89.5 88.8 88.2 87.6 87.0 86.4 85.8 85.2

29 84.6 84.0 83.4 82.9 82.3 81.8 81.2 80.7 80.1 79.6

30 79.1 78.5 78.0 77.5 77.0 76.5 76.0 75.5 75.0 74.5

31 74.0 73.6 73.1 72.6 72.2 71.7 71.3 70.8 70.4 69.9

32 69.5 69.1 68.6 68.2 67.8 67.4 66.9 66.5 66.1 65.7

33 65.3 64.9 64.6 64.2 63.8 63.4 63.0 62.6 62.3 61.9

34 61.5 61.2 60.8 60.5 60.1 59.8 59.4 59.1 58.8 58.4

35 58.1 57.8 57.4 57.1 56.8 56.5 56.1 55.8 55.5 55.2

36 54.9 54.6 54.3 54.0 53.7 53.4 53.1 52.8 52.5 52.3

37 52.0 51.7 51.4 51.1 50.9 50.6 50.3 50.1 49.8 49.5

38 49.3 49.0 48.8 48.5 48.3 48.0 47.8 47.5 47.3 47.0

39 46.8 46.5 46.3 46.1 45.8 45.6 45.4 45.1 44.9 44.7

40 44.5 44.2 44.0 43.8 43.6 43.4 43.2 43.0 42.7 42.5

41 42.3 42.1 41.9 41.7 41.5 41.3 41.1 40.9 40.7 40.5

42 40.3 40.1 40.0 39.8 39.6 39.4 39.2 39.0 38.8 38.7

43 38.5 38.3 38.1 37.9 37.8 37.6 37.4 37.3 37.1 36.9

44 36.8 36.6 36.4 36.3 36.1 35.9 35.8 35.6 35.5 35.3

45 35.1 35.0 34.8 34.7 34.5 34.4 34.2 34.1 33.9 33.8

46 33.6 33.5 33.3 33.2 33.0 32.9 32.8 32.6 32.5 32.3

47 32.2 32.1 31.9 31.8 31.7 31.5 31.4 31.3 31.1 31.0

48 30.9 30.8 30.6 30.5 30.4 30.2 30.1 30.0 29.9 29.8

49 29.6 29.5 29.4 29.3 29.2 29.0 28.9 28.8 28.7 28.6

50 28.5 28.3 28.2 28.1 28.0 27.9 27.8 27.7 27.6 27.5

L o a d 5 g f ( 0 . 0 0 5 k g f )

1

Page 5: Hardness Conversion Tables

L o a d 5 g f ( 0 . 0 0 5 k g f )

51 27.4 27.2 27.1 27.0 26.9 26.8 26.7 26.6 26.5 26.4

52 26.3 26.2 26.1 26.0 25.9 25.8 25.7 25.6 25.5 25.4

53 25.3 25.2 25.1 25.0 25.0 24.9 24.8 24.7 24.6 24.5

54 24.4 24.3 24.2 24.1 24.0 24.0 23.9 23.8 23.7 23.6

55 23.5 23.4 23.4 23.3 23.2 23.1 23.0 22.9 22.9 22.8

56 22.7 22.6 22.5 22.4 22.4 22.3 22.2 22.1 22.1 22.0

57 21.9 21.8 21.7 21.7 21.6 21.5 21.4 21.4 21.3 21.2

58 21.2 21.1 21.0 20.9 20.9 20.8 20.7 20.6 20.6 20.5

59 20.4 20.4 20.3 20.2 20.2 20.1 20.0 20.0 19.9 19.8

60 19.8 19.7 19.6 19.6 19.5 19.4 19.4 19.3 19.2 19.2

61 19.1 19.1 19.0 18.9 18.9 18.8 18.8 18.7 18.6 18.6

62 18.5 18.4 18.4 18.3 18.3 18.2 18.2 18.1 18.0 18.0

63 17.9 17.9 17.8 17.8 17.7 17.6 17.6 17.5 17.5 17.4

64 17.4 17.3 17.3 17.2 17.2 17.1 17.0 17.0 16.9 16.9

65 16.8 16.8 16.7 16.7 16.6 16.6 16.5 16.5 16.4 16.4

66 16.3 16.3 16.2 16.2 16.1 16.1 16.0 16.0 15.9 15.9

67 15.8 15.8 15.8 15.7 15.7 15.6 15.6 15.5 15.5 15.4

68 15.4 15.3 15.3 15.3 15.2 15.2 15.1 15.1 15.0 15.0

69 14.9 14.9 14.9 14.8 14.8 14.7 14.7 14.6 14.6 14.6

70 14.5 14.5 14.4 14.4 14.4 14.3 14.3 14.2 14.2 14.2

71 14.1 14.1 14.0 14.0 14.0 13.9 13.9 13.8 13.8 13.8

72 13.7 13.7 13.6 13.6 13.6 13.5 13.5 13.5 13.4 13.4

73 13.4 13.3 13.3 13.2 13.2 13.2 13.1 13.1 13.1 13.0

74 13.0 13.0 12.9 12.9 12.9 12.8 12.8 12.8 12.7 12.7

75 12.6 12.6 12.6 12.5 12.5 12.5 12.4 12.4 12.4 12.4

76 12.3 12.3 12.3 12.2 12.2 12.2 12.1 12.1 12.1 12.0

77 12.0 12.0 11.9 11.9 11.9 11.8 11.8 11.8 11.8 11.7

78 11.7 11.7 11.6 11.6 11.6 11.5 11.5 11.5 11.5 11.4

79 11.4 11.4 11.3 11.3 11.3 11.3 11.2 11.2 11.2 11.1

80 11.1 11.1 11.1 11.0 11.0 11.0 11.0 10.9 10.9 10.9

81 10.8 10.8 10.8 10.8 10.7 10.7 10.7 10.7 10.6 10.6

82 10.6 10.6 10.5 10.5 10.5 10.5 10.4 10.4 10.4 10.4

83 10.3 10.3 10.3 10.3 10.2 10.2 10.2 10.2 10.1 10.1

84 10.1 10.1 10.0 10.0 9.99 9.96 9.94 9.92 9.89 9.87

85 9.85 9.82 9.80 9.78 9.76 9.73 9.71 9.69 9.66 9.64

86 9.62 9.60 9.58 9.55 9.53 9.51 9.49 9.47 9.44 9.42

87 9.40 9.38 9.36 9.34 9.31 9.29 9.27 9.25 9.23 9.21

88 9.19 9.17 9.15 9.13 9.10 9.08 9.06 9.04 9.02 9.00

89 8.98 8.96 8.94 8.92 8.90 8.88 8.86 8.84 8.82 8.80

90 8.78 8.76 8.75 8.73 8.71 8.69 8.67 8.65 8.63 8.61

91 8.59 8.57 8.55 8.54 8.52 8.50 8.48 8.46 8.44 8.42

92 8.41 8.39 8.37 8.35 8.33 8.32 8.30 8.28 8.26 8.24

93 8.23 8.21 8.19 8.17 8.16 8.14 8.12 8.10 8.09 8.07

94 8.05 8.04 8.02 8.00 7.98 7.97 7.95 7.93 7.92 7.90

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

2

Page 6: Hardness Conversion Tables

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

L o a d 1 0 g f ( 0 . 0 1 k g f )

6 3953 3824 3702 3585 3474 3368 3267 3170 3077 2989

7 2904 2823 2745 2670 2599 2530 2464 2400 2339 2280

8 2223 2169 2116 2066 2017 1970 1924 1880 1838 1796

9 1757 1718 1681 1645 1610 1577 1544 1512 1482 1452

10 1423 1395 1368 1341 1316 1291 1266 1243 1220 1198

11 1176 1155 1134 1114 1095 1076 1058 1040 1022 1005

12 988 972 956 941 925 911 896 882 869 855

13 842 829 817 804 792 781 769 758 747 737

14 726 716 706 696 686 677 668 659 650 641

15 632 624 616 608 600 592 585 577 570 563

16 556 549 542 536 529 523 516 510 504 498

17 492 487 481 475 470 465 459 454 449 444

18 439 434 430 425 420 416 411 407 403 398

19 394 390 386 382 378 374 370 367 363 359

20 356 352 349 345 342 339 335 332 329 326

21 323 320 317 314 311 308 305 302 299 297

22 294 291 289 286 284 281 279 276 274 271

23 269 267 264 262 260 258 255 253 251 249

24 247 245 243 241 239 237 235 233 231 230

25 228 226 224 222 221 219 217 215 214 212

26 211 209 207 206 204 203 201 200 198 197

27 195 194 192 191 190 188 187 185 184 183

28 182 180 179 178 176 175 174 173 172 170

29 169 168 167 166 165 164 162 161 160 159

30 158 157 156 155 154 153 152 151 150 149

31 148 147 146 145 144 143 143 142 141 140

32 139 138 137 136 136 135 134 133 132 131

33 131 130 129 128 128 127 126 125 125 124

34 123 122 122 121 120 120 119 118 118 117

35 116 116 115 114 114 113 112 112 111 110

36 110 109 109 108 107 107 106 106 105 105

37 104 103 103 102 102 101 101 100 99.6 99.1

38 98.5 98.0 97.5 97.0 96.5 96.0 95.5 95.0 94.5 94.0

39 93.6 93.1 92.6 92.1 91.7 91.2 90.7 90.3 89.8 89.4

40 88.9 88.5 88.1 87.6 87.2 86.8 86.3 85.9 85.5 85.1

41 84.7 84.2 83.8 83.4 83.0 82.6 82.2 81.8 81.4 81.1

42 80.7 80.3 79.9 79.5 79.2 78.8 78.4 78.0 77.7 77.3

43 77.0 76.6 76.2 75.9 75.5 75.2 74.9 74.5 74.2 73.8

44 73.5 73.2 72.8 72.5 72.2 71.9 71.5 71.2 70.9 70.6

45 70.3 70.0 69.7 69.3 69.0 68.7 68.4 68.1 67.8 67.5

46 67.2 67.0 66.7 66.4 66.1 65.8 65.5 65.2 65.0 64.7

47 64.4 64.1 63.9 63.6 63.3 63.1 62.8 62.5 62.3 62.0

48 61.8 61.5 61.3 61.0 60.7 60.5 60.2 60.0 59.8 59.5

49 59.3 59.0 58.8 58.5 58.3 58.1 57.8 57.6 57.4 57.1

50 56.9 56.7 56.5 56.2 56.0 55.8 55.6 55.4 55.1 54.9

51 54.7 54.5 54.3 54.1 53.9 53.7 53.4 53.2 53.0 52.8

3

Page 7: Hardness Conversion Tables

L o a d 1 0 g f ( 0 . 0 1 k g f )

52 52.6 52.4 52.2 52.0 51.8 51.6 51.4 51.2 51.0 50.9

53 50.7 50.5 50.3 50.1 49.9 49.7 49.5 49.3 49.2 49.0

54 48.8 48.6 48.4 48.3 48.1 47.9 47.7 47.6 47.4 47.2

55 47.0 46.9 46.7 46.5 46.4 46.2 46.0 45.9 45.7 45.5

56 45.4 45.2 45.1 44.9 44.7 44.6 44.4 44.3 44.1 44.0

57 43.8 43.6 43.5 43.3 43.2 43.0 42.9 42.7 42.6 42.4

58 42.3 42.2 42.0 41.9 41.7 41.6 41.4 41.3 41.2 41.0

59 40.9 40.7 40.6 40.5 40.3 40.2 40.1 39.9 39.8 39.7

60 39.5 39.4 39.3 39.1 39.0 38.9 38.7 38.6 38.5 38.4

61 38.2 38.1 38.0 37.9 37.7 37.6 37.5 37.4 37.3 37.1

62 37.0 36.9 36.8 36.7 36.5 36.4 36.3 36.2 36.1 36.0

63 35.9 35.7 35.6 35.5 35.4 35.3 35.2 35.1 35.0 34.9

64 34.7 34.6 34.5 34.4 34.3 34.2 34.1 34.0 33.9 33.8

65 33.7 33.6 33.5 33.4 33.3 33.2 33.1 33.0 32.9 32.8

66 32.7 32.6 32.5 32.4 32.3 32.2 32.1 32.0 31.9 31.8

67 31.7 31.6 31.5 31.4 31.3 31.2 31.1 31.0 31.0 30.9

68 30.8 30.7 30.6 30.5 30.4 30.3 30.2 30.2 30.1 30.0

69 29.9 29.8 29.7 29.6 29.5 29.5 29.4 29.3 29.2 29.1

70 29.0 29.0 28.9 28.8 28.7 28.6 28.5 28.5 28.4 28.3

71 28.2 28.1 28.1 28.0 27.9 27.8 27.8 27.7 27.6 27.5

72 27.4 27.4 27.3 27.2 27.1 27.1 27.0 26.9 26.8 26.8

73 26.7 26.6 26.6 26.5 26.4 26.3 26.3 26.2 26.1 26.1

74 26.0 25.9 25.8 25.8 25.7 25.6 25.6 25.5 25.4 25.4

75 25.3 25.2 25.2 25.1 25.0 25.0 24.9 24.8 24.8 24.7

76 24.6 24.6 24.5 24.4 24.4 24.3 24.3 24.2 24.1 24.1

77 24.0 23.9 23.9 23.8 23.8 23.7 23.6 23.6 23.5 23.4

78 23.4 23.3 23.3 23.2 23.2 23.1 23.0 23.0 22.9 22.9

79 22.8 22.7 22.7 22.6 22.6 22.5 22.5 22.4 22.3 22.3

80 22.2 22.2 22.1 22.1 22.0 22.0 21.9 21.9 21.8 21.7

81 21.7 21.6 21.6 21.5 21.5 21.4 21.4 21.3 21.3 21.2

82 21.2 21.1 21.1 21.0 21.0 20.9 20.9 20.8 20.8 20.7

83 20.7 20.6 20.6 20.5 20.5 20.4 20.4 20.3 20.3 20.2

84 20.2 20.1 20.1 20.0 20.0 19.9 19.9 19.8 19.8 19.7

85 19.7 19.6 19.6 19.6 19.5 19.5 19.4 19.4 19.3 19.3

86 19.2 19.2 19.2 19.1 19.1 19.0 19.0 18.9 18.9 18.8

87 18.8 18.8 18.7 18.7 18.6 18.6 18.5 18.5 18.5 18.4

88 18.4 18.3 18.3 18.3 18.2 18.2 18.1 18.1 18.0 18.0

89 18.0 17.9 17.9 17.8 17.8 17.8 17.7 17.7 17.6 17.6

90 17.6 17.5 17.5 17.5 17.4 17.4 17.3 17.3 17.3 17.2

91 17.2 17.1 17.1 17.1 17.0 17.0 17.0 16.9 16.9 16.8

92 16.8 16.8 16.7 16.7 16.7 16.6 16.6 16.6 16.5 16.5

93 16.5 16.4 16.4 16.3 16.3 16.3 16.2 16.2 16.2 16.1

94 16.1 16.1 16.0 16.0 16.0 15.9 15.9 15.9 15.8 15.8

95 15.8 15.7 15.7 15.7 15.6 15.6 15.6 15.5 15.5 15.5

96 15.4 15.4 15.4 15.3 15.3 15.3 15.2 15.2 15.2 15.2

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

4

Page 8: Hardness Conversion Tables

L o a d 2 5 g f ( 0 . 0 2 5 k g f )

12 2470 2430 2390 2351 2314 2277 2241 2206 2171 2138

13 2105 2073 2042 2011 1981 1952 1923 1895 1868 1841

14 1815 1789 1764 1740 1716 1692 1669 1646 1624 1602

15 1581 1560 1540 1520 1500 1481 1462 1443 1425 1407

16 1390 1372 1356 1339 1323 1307 1291 1276 1260 1246

17 1231 1217 1203 1189 1175 1162 1148 1136 1123 1110

18 1098 1086 1074 1062 1051 1039 1028 1017 1007 996

19 985 975 965 955 945 936 926 917 907 898

20 889 881 872 863 855 847 838 830 822 814

21 807 799 792 784 777 770 762 755 749 742

22 735 728 722 715 709 703 697 690 684 678

23 672 667 661 655 650 644 639 633 628 623

24 618 613 607 602 598 593 588 583 578 574

25 569 565 560 556 551 547 543 539 534 530

26 526 522 518 514 510 507 503 499 495 492

27 488 484 481 477 474 470 467 464 460 457

28 454 451 447 444 441 438 435 432 429 426

29 423 420 417 414 412 409 406 403 401 398

30 395 393 390 387 385 382 380 377 375 373

31 370 368 365 363 361 359 356 354 352 350

32 347 345 343 341 339 337 335 333 331 329

33 327 325 323 321 319 317 315 313 311 310

34 308 306 304 302 301 299 297 295 294 292

35 290 289 287 285 284 282 281 279 278 276

36 274 273 271 270 268 267 266 264 263 261

37 260 258 257 256 254 253 252 250 249 248

38 246 245 244 243 241 240 239 238 236 235

39 234 233 232 230 229 228 227 226 225 223

40 222 221 220 219 218 217 216 215 214 213

41 212 211 210 209 208 207 206 205 204 203

42 202 201 200 199 198 197 196 195 194 193

43 192 192 191 190 189 188 187 186 185 185

44 184 183 182 181 180 180 179 178 177 176

45 176 175 174 173 173 172 171 170 170 169

46 168 167 167 166 165 165 164 163 162 162

47 161 160 160 159 158 158 157 156 156 155

48 154 154 153 152 152 151 151 150 149 149

49 148 148 147 146 146 145 145 144 143 143

50 142 142 141 141 140 139 139 138 138 137

51 137 136 136 135 135 134 134 133 133 132

52 132 131 131 130 130 129 129 128 128 127

53 127 126 126 125 125 124 124 123 123 122

54 122 122 121 121 120 120 119 119 118 118

55 118 117 117 116 116 115 115 115 114 114

56 113 113 113 112 112 111 111 111 110 110

57 109 109 109 108 108 108 107 107 106 106

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

5

Page 9: Hardness Conversion Tables

L o a d 2 5 g f ( 0 . 0 2 5 k g f )

58 106 105 105 105 104 104 104 103 103 103

59 102 102 102 101 101 100 100 99.8 99.5 99.1

60 98.8 98.5 98.2 97.8 97.5 97.2 96.9 96.6 96.2 95.9

61 95.6 95.3 95.0 94.7 94.4 94.1 93.8 93.4 93.1 92.8

62 92.5 92.2 92.0 91.7 91.4 91.1 90.8 90.5 90.2 89.9

63 89.6 89.3 89.1 88.8 88.5 88.2 87.9 87.7 87.4 87.1

64 86.9 86.6 86.3 86.0 85.8 85.5 85.2 85.0 84.7 84.5

65 84.2 83.9 83.7 83.4 83.2 82.9 82.7 82.4 82.2 81.9

66 81.7 81.4 81.2 80.9 80.7 80.4 80.2 80.0 79.7 79.5

67 79.2 79.0 78.8 78.5 78.3 78.1 77.8 77.6 77.4 77.2

68 76.9 76.7 76.5 76.3 76.0 75.8 75.6 75.4 75.2 74.9

69 74.7 74.5 74.3 74.1 73.9 73.7 73.4 73.2 73.0 72.8

70 72.6 72.4 72.2 72.0 71.8 71.6 71.4 71.2 71.0 70.8

71 70.6 70.4 70.2 70.0 69.8 69.6 69.4 69.2 69.0 68.8

72 68.6 68.4 68.2 68.1 67.9 67.7 67.5 67.3 67.1 66.9

73 66.8 66.6 66.4 66.2 66.0 65.9 65.7 65.5 65.3 65.1

74 65.0 64.8 64.6 64.4 64.3 64.1 63.9 63.8 63.6 63.4

75 63.2 63.1 62.9 62.7 62.6 62.4 62.2 62.1 61.9 61.8

76 61.6 61.4 61.3 61.1 60.9 60.8 60.6 60.5 60.3 60.2

77 60.0 59.8 59.7 59.5 59.4 59.2 59.1 58.9 58.8 58.6

78 58.5 58.3 58.2 58.0 57.9 57.7 57.6 57.4 57.3 57.1

79 57.0 56.9 56.7 56.6 56.4 56.3 56.1 56.0 55.9 55.7

80 55.6 55.4 55.3 55.2 55.0 54.9 54.8 54.6 54.5 54.4

81 54.2 54.1 54.0 53.8 53.7 53.6 53.4 53.3 53.2 53.0

82 52.9 52.8 52.7 52.5 52.4 52.3 52.1 52.0 51.9 51.8

83 51.6 51.5 51.4 51.3 51.1 51.0 50.9 50.8 50.7 50.5

84 50.4 50.3 50.2 50.1 49.9 49.8 49.7 49.6 49.5 49.4

85 49.2 49.1 49.0 48.9 48.8 48.7 48.6 48.4 48.3 48.2

86 48.1 48.0 47.9 47.8 47.7 47.5 47.4 47.3 47.2 47.1

87 47.0 46.9 46.8 46.7 46.6 46.5 46.4 46.3 46.1 46.0

88 45.9 45.8 45.7 45.6 45.5 45.4 45.3 45.2 45.1 45.0

89 44.9 44.8 44.7 44.6 44.5 44.4 44.3 44.2 44.1 44.0

90 43.9 43.8 43.7 43.6 43.5 43.4 43.3 43.2 43.1 43.1

91 43.0 42.9 42.8 42.7 42.6 42.5 42.4 42.3 42.2 42.1

92 42.0 41.9 41.8 41.8 41.7 41.6 41.5 41.4 41.3 41.2

93 41.1 41.0 41.0 40.9 40.8 40.7 40.6 40.5 40.4 40.3

94 40.3 40.2 40.1 40.0 39.9 39.8 39.8 39.7 39.6 39.5

95 39.4 39.3 39.3 39.2 39.1 39.0 38.9 38.8 38.8 38.7

96 38.6 38.5 38.4 38.4 38.3 38.2 38.1 38.0 38.0 37.9

97 37.8 37.7 37.7 37.6 37.5 37.4 37.3 37.3 37.2 37.1

98 37.0 37.0 36.9 36.8 36.7 36.7 36.6 36.5 36.4 36.4

99 36.3 36.2 36.2 36.1 36.0 35.9 35.9 35.8 35.7 35.6

100 35.6 35.5 35.4 35.4 35.3 35.2 35.2 35.1 35.0 34.9

101 34.9 34.8 34.7 34.7 34.6 34.5 34.5 34.4 34.3 34.3

102 34.2 34.1 34.1 34.0 33.9 33.9 33.8 33.7 33.7 33.6

103 33.5 33.5 33.4 33.3 33.3 33.2 33.1 33.1 33.0 33.0

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

6

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L o a d 2 5 g f ( 0 . 0 2 5 k g f )

104 32.9 32.8 32.8 32.7 32.6 32.6 32.5 32.5 32.4 32.3

105 32.3 32.2 32.1 32.1 32.0 32.0 31.9 31.8 31.8 31.7

106 31.7 31.6 31.5 31.5 31.4 31.4 31.3 31.2 31.2 31.1

107 31.1 31.0 31.0 30.9 30.8 30.8 30.7 30.7 30.6 30.6

108 30.5 30.4 30.4 30.3 30.3 30.2 30.2 30.1 30.1 30.0

109 29.9 29.9 29.8 29.8 29.7 29.7 29.6 29.6 29.5 29.5

110 29.4 29.3 29.3 29.2 29.2 29.1 29.1 29.0 29.0 28.9

111 28.9 28.8 28.8 28.7 28.7 28.6 28.6 28.5 28.5 28.4

112 28.4 28.3 28.3 28.2 28.2 28.1 28.1 28.0 28.0 27.9

113 27.9 27.8 27.8 27.7 27.7 27.6 27.6 27.5 27.5 27.4

114 27.4 27.3 27.3 27.2 27.2 27.1 27.1 27.0 27.0 26.9

115 26.9 26.9 26.8 26.8 26.7 26.7 26.6 26.6 26.5 26.5

116 26.4 26.4 26.3 26.3 26.3 26.2 26.2 26.1 26.1 26.0

117 26.0 25.9 25.9 25.9 25.8 25.8 25.7 25.7 25.6 25.6

118 25.5 25.5 25.5 25.4 25.4 25.3 25.3 25.2 25.2 25.2

119 25.1 25.1 25.0 25.0 25.0 24.9 24.9 24.8 24.8 24.7

120 24.7 24.7 24.6 24.6 24.5 24.5 24.5 24.4 24.4 24.3

121 24.3 24.3 24.2 24.2 24.1 24.1 24.1 24.0 24.0 23.9

122 23.9 23.9 23.8 23.8 23.7 23.7 23.7 23.6 23.6 23.6

123 23.5 23.5 23.4 23.4 23.4 23.3 23.3 23.2 23.2 23.2

124 23.1 23.1 23.1 23.0 23.0 23.0 22.9 22.9 22.8 22.8

125 22.8 22.7 22.7 22.7 22.6 22.6 22.6 22.5 22.5 22.4

126 22.4 22.4 22.3 22.3 22.3 22.2 22.2 22.2 22.1 22.1

127 22.1 22.0 22.0 22.0 21.9 21.9 21.8 21.8 21.8 21.7

128 21.7 21.7 21.6 21.6 21.6 21.5 21.5 21.5 21.4 21.4

129 21.4 21.3 21.3 21.3 21.2 21.2 21.2 21.1 21.1 21.1

130 21.1 21.0 21.0 21.0 20.9 20.9 20.9 20.8 20.8 20.8

131 20.7 20.7 20.7 20.6 20.6 20.6 20.5 20.5 20.5 20.4

132 20.4 20.4 20.4 20.3 20.3 20.3 20.2 20.2 20.2 20.1

133 20.1 20.1 20.1 20.0 20.0 20.0 19.9 19.9 19.9 19.8

134 19.8 19.8 19.8 19.7 19.7 19.7 19.6 19.6 19.6 19.5

135 19.5 19.5 19.5 19.4 19.4 19.4 19.3 19.3 19.3 19.3

136 19.2 19.2 19.2 19.1 19.1 19.1 19.1 19.0 19.0 19.0

137 19.0 18.9 18.9 18.9 18.8 18.8 18.8 18.8 18.7 18.7

138 18.7 18.7 18.6 18.6 18.6 18.5 18.5 18.5 18.5 18.4

139 18.4 18.4 18.4 18.3 18.3 18.3 18.3 18.2 18.2 18.2

140 18.2 18.1 18.1 18.1 18.0 18.0 18.0 18.0 17.9 17.9

141 17.9 17.9 17.8 17.8 17.8 17.8 17.7 17.7 17.7 17.7

142 17.6 17.6 17.6 17.6 17.5 17.5 17.5 17.5 17.4 17.4

143 17.4 17.4 17.3 17.3 17.3 17.3 17.3 17.2 17.2 17.2

144 17.2 17.1 17.1 17.1 17.1 17.0 17.0 17.0 17.0 16.9

145 16.9 16.9 16.9 16.9 16.8 16.8 16.8 16.8 16.7 16.7

146 16.7 16.7 16.6 16.6 16.6 16.6 16.6 16.5 16.5 16.5

147 16.5 16.4 16.4 16.4 16.4 16.4 16.3 16.3 16.3 16.3

148 16.2 16.2 16.2 16.2 16.2 16.1 16.1 16.1 16.1 16.0

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

7

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L o a d 5 0 g f ( 0 . 0 5 k g f )

17 2462 2433 2405 2377 2350 2323 2297 2271 2246 2221

18 2196 2172 2148 2125 2102 2079 2057 2035 2013 1992

19 1971 1950 1930 1910 1890 1871 1852 1833 1815 1797

20 1779 1761 1744 1727 1710 1693 1677 1660 1645 1629

21 1613 1598 1583 1568 1554 1539 1525 1511 1497 1483

22 1470 1457 1444 1431 1418 1405 1393 1381 1369 1357

23 1345 1333 1322 1311 1299 1288 1277 1267 1256 1246

24 1235 1225 1215 1205 1195 1185 1176 1166 1157 1148

25 1138 1129 1120 1112 1103 1094 1086 1077 1069 1061

26 1053 1044 1037 1029 1021 1013 1006 998 991 983

27 976 969 962 955 948 941 934 927 921 914

28 908 901 895 888 882 876 870 864 858 852

29 846 840 834 829 823 818 812 807 801 796

30 791 785 780 775 770 765 760 755 750 745

31 740 736 731 726 722 717 713 708 704 699

32 695 691 686 682 678 674 669 665 661 657

33 653 649 646 642 638 634 630 626 623 619

34 615 612 608 605 601 598 594 591 588 584

35 581 578 574 571 568 565 561 558 555 552

36 549 546 543 540 537 534 531 528 525 523

37 520 517 514 511 509 506 503 501 498 495

38 493 490 488 485 483 480 478 475 473 470

39 468 465 463 461 458 456 454 451 449 447

40 445 442 440 438 436 434 432 430 427 425

41 423 421 419 417 415 413 411 409 407 405

42 403 401 400 398 396 394 392 390 388 387

43 385 383 381 379 378 376 374 373 371 369

44 368 366 364 363 361 359 358 356 355 353

45 351 350 348 347 345 344 342 341 339 338

46 336 335 333 332 330 329 328 326 325 323

47 322 321 319 318 317 315 314 313 311 310

48 309 308 306 305 304 302 301 300 299 298

49 296 295 294 293 292 290 289 288 287 286

50 285 283 282 281 280 279 278 277 276 275

51 274 272 271 270 269 268 267 266 265 264

52 263 262 261 260 259 258 257 256 255 254

53 253 252 251 250 250 249 248 247 246 245

54 244 243 242 241 240 240 239 238 237 236

55 235 234 234 233 232 231 230 229 229 228

56 227 226 225 224 224 223 222 221 221 220

57 219 218 217 217 216 215 214 214 213 212

58 212 211 210 209 209 208 207 206 206 205

59 204 204 203 202 202 201 200 200 199 198

60 198 197 196 196 195 194 194 193 192 192

61 191 191 190 189 189 188 188 187 186 186

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

8

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L o a d 5 0 g f ( 0 . 0 5 k g f )

62 185 184 184 183 183 182 182 181 180 180

63 179 179 178 178 177 176 176 175 175 174

64 174 173 173 172 172 171 170 170 169 169

65 168 168 167 167 166 166 165 165 164 164

66 163 163 162 162 161 161 160 160 159 159

67 158 158 158 157 157 156 156 155 155 154

68 154 153 153 153 152 152 151 151 150 150

69 149 149 149 148 148 147 147 146 146 146

70 145 145 144 144 144 143 143 142 142 142

71 141 141 140 140 140 139 139 138 138 138

72 137 137 136 136 136 135 135 135 134 134

73 134 133 133 132 132 132 131 131 131 130

74 130 130 129 129 129 128 128 128 127 127

75 126 126 126 125 125 125 124 124 124 124

76 123 123 123 122 122 122 121 121 121 120

77 120 120 119 119 119 118 118 118 118 117

78 117 117 116 116 116 115 115 115 115 114

79 114 114 113 113 113 113 112 112 112 111

80 111 111 111 110 110 110 110 109 109 109

81 108 108 108 108 107 107 107 107 106 106

82 106 106 105 105 105 105 104 104 104 104

83 103 103 103 103 102 102 102 102 101 101

84 101 101 100 100 99.9 99.6 99.4 99.2 98.9 98.7

85 98.5 98.2 98.0 97.8 97.6 97.3 97.1 96.9 96.6 96.4

86 96.2 96.0 95.8 95.5 95.3 95.1 94.9 94.7 94.4 94.2

87 94.0 93.8 93.6 93.4 93.1 92.9 92.7 92.5 92.3 92.1

88 91.9 91.7 91.5 91.3 91.0 90.8 90.6 90.4 90.2 90.0

89 89.8 89.6 89.4 89.2 89.0 88.8 88.6 88.4 88.2 88.0

90 87.8 87.6 87.5 87.3 87.1 86.9 86.7 86.5 86.3 86.1

91 85.9 85.7 85.5 85.4 85.2 85.0 84.8 84.6 84.4 84.2

92 84.1 83.9 83.7 83.5 83.3 83.2 83.0 82.8 82.6 82.4

93 82.3 82.1 81.9 81.7 81.6 81.4 81.2 81.0 80.9 80.7

94 80.5 80.4 80.2 80.0 79.8 79.7 79.5 79.3 79.2 79.0

95 78.8 78.7 78.5 78.3 78.2 78.0 77.9 77.7 77.5 77.4

96 77.2 77.0 76.9 76.7 76.6 76.4 76.2 76.1 75.9 75.8

97 75.6 75.5 75.3 75.2 75.0 74.8 74.7 74.5 74.4 74.2

98 74.1 73.9 73.8 73.6 73.5 73.3 73.2 73.0 72.9 72.7

99 72.6 72.4 72.3 72.2 72.0 71.9 71.7 71.6 71.4 71.3

100 71.2 71.0 70.9 70.7 70.6 70.4 70.3 70.2 70.0 69.9

101 69.7 69.6 69.5 69.3 69.2 69.1 68.9 68.8 68.7 68.5

102 68.4 68.3 68.1 68.0 67.9 67.7 67.6 67.5 67.3 67.2

103 67.1 66.9 66.8 66.7 66.5 66.4 66.3 66.2 66.0 65.9

104 65.8 65.7 65.5 65.4 65.3 65.2 65.0 64.9 64.8 64.7

105 64.5 64.4 64.3 64.2 64.0 63.9 63.8 63.7 63.6 63.4

106 63.3 63.2 63.1 63.0 62.8 62.7 62.6 62.5 62.4 62.3

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

9

Page 13: Hardness Conversion Tables

L o a d 5 0 g f ( 0 . 0 5 k g f )

107 62.1 62.0 61.9 61.8 61.7 61.6 61.5 61.3 61.2 61.1

108 61.0 60.9 60.8 60.7 60.6 60.4 60.3 60.2 60.1 60.0

109 59.9 59.8 59.7 59.6 59.4 59.3 59.2 59.1 59.0 58.9

110 58.8 58.7 58.6 58.5 58.4 58.3 58.2 58.1 58.0 57.9

111 57.7 57.6 57.5 57.4 57.3 57.2 57.1 57.0 56.9 56.8

112 56.7 56.6 56.5 56.4 56.3 56.2 56.1 56.0 55.9 55.8

113 55.7 55.6 55.5 55.4 55.3 55.2 55.1 55.0 54.9 54.8

114 54.7 54.7 54.6 54.5 54.4 54.3 54.2 54.1 54.0 53.9

115 53.8 53.7 53.6 53.5 53.4 53.3 53.2 53.2 53.1 53.0

116 52.9 52.8 52.7 52.6 52.5 52.4 52.3 52.2 52.2 52.1

117 52.0 51.9 51.8 51.7 51.6 51.5 51.4 51.4 51.3 51.2

118 51.1 51.0 50.9 50.8 50.8 50.7 50.6 50.5 50.4 50.3

119 50.2 50.2 50.1 50.0 49.9 49.8 49.7 49.7 49.6 49.5

120 49.4 49.3 49.2 49.2 49.1 49.0 48.9 48.8 48.8 48.7

121 48.6 48.5 48.4 48.4 48.3 48.2 48.1 48.0 48.0 47.9

122 47.8 47.7 47.6 47.6 47.5 47.4 47.3 47.3 47.2 47.1

123 47.0 47.0 46.9 46.8 46.7 46.6 46.6 46.5 46.4 46.3

124 46.3 46.2 46.1 46.1 46.0 45.9 45.8 45.8 45.7 45.6

125 45.5 45.5 45.4 45.3 45.2 45.2 45.1 45.0 45.0 44.9

126 44.8 44.7 44.7 44.6 44.5 44.5 44.4 44.3 44.3 44.2

127 44.1 44.0 44.0 43.9 43.8 43.8 43.7 43.6 43.6 43.5

128 43.4 43.4 43.3 43.2 43.2 43.1 43.0 43.0 42.9 42.8

129 42.8 42.7 42.6 42.6 42.5 42.4 42.4 42.3 42.2 42.2

130 42.1 42.0 42.0 41.9 41.8 41.8 41.7 41.7 41.6 41.5

131 41.5 41.4 41.3 41.3 41.2 41.1 41.1 41.0 41.0 40.9

132 40.8 40.8 40.7 40.6 40.6 40.5 40.5 40.4 40.3 40.3

133 40.2 40.2 40.1 40.0 40.0 39.9 39.9 39.8 39.7 39.7

134 39.6 39.6 39.5 39.4 39.4 39.3 39.3 39.2 39.2 39.1

135 39.0 39.0 38.9 38.9 38.8 38.8 38.7 38.6 38.6 38.5

136 38.5 38.4 38.4 38.3 38.2 38.2 38.1 38.1 38.0 38.0

137 37.9 37.9 37.8 37.7 37.7 37.6 37.6 37.5 37.5 37.4

138 37.4 37.3 37.3 37.2 37.1 37.1 37.0 37.0 36.9 36.9

139 36.8 36.8 36.7 36.7 36.6 36.6 36.5 36.5 36.4 36.4

140 36.3 36.2 36.2 36.1 36.1 36.0 36.0 35.9 35.9 35.8

141 35.8 35.7 35.7 35.6 35.6 35.5 35.5 35.4 35.4 35.3

142 35.3 35.2 35.2 35.1 35.1 35.0 35.0 34.9 34.9 34.8

143 34.8 34.7 34.7 34.6 34.6 34.6 34.5 34.5 34.4 34.4

144 34.3 34.3 34.2 34.2 34.1 34.1 34.0 34.0 33.9 33.9

145 33.8 33.8 33.7 33.7 33.7 33.6 33.6 33.5 33.5 33.4

146 33.4 33.3 33.3 33.2 33.2 33.2 33.1 33.1 33.0 33.0

147 32.9 32.9 32.8 32.8 32.7 32.7 32.7 32.6 32.6 32.5

148 32.5 32.4 32.4 32.4 32.3 32.3 32.2 32.2 32.1 32.1

149 32.0 32.0 32.0 31.9 31.9 31.8 31.8 31.7 31.7 31.7

150 31.6 31.6 31.5 31.5 31.5 31.4 31.4 31.3 31.3 31.2

151 31.2 31.2 31.1 31.1 31.0 31.0 31.0 30.9 30.9 30.8

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

10

Page 14: Hardness Conversion Tables

152 30.8 30.8 30.7 30.7 30.6 30.6 30.6 30.5 30.5 30.4

153 30.4 30.4 30.3 30.3 30.2 30.2 30.2 30.1 30.1 30.0

154 30.0 30.0 29.9 29.9 29.8 29.8 29.8 29.7 29.7 29.7

155 29.6 29.6 29.5 29.5 29.5 29.4 29.4 29.3 29.3 29.3

156 29.2 29.2 29.2 29.1 29.1 29.1 29.0 29.0 28.9 28.9

157 28.9 28.8 28.8 28.8 28.7 28.7 28.6 28.6 28.6 28.5

158 28.5 28.5 28.4 28.4 28.4 28.3 28.3 28.3 28.2 28.2

159 28.1 28.1 28.1 28.0 28.0 28.0 27.9 27.9 27.9 27.8

160 27.8 27.8 27.7 27.7 27.7 27.6 27.6 27.6 27.5 27.5

161 27.4 27.4 27.4 27.3 27.3 27.3 27.2 27.2 27.2 27.1

162 27.1 27.1 27.0 27.0 27.0 26.9 26.9 26.9 26.8 26.8

163 26.8 26.7 26.7 26.7 26.6 26.6 26.6 26.6 26.5 26.5

164 26.5 26.4 26.4 26.4 26.3 26.3 26.3 26.2 26.2 26.2

165 26.1 26.1 26.1 26.0 26.0 26.0 25.9 25.9 25.9 25.9

166 25.8 25.8 25.8 25.7 25.7 25.7 25.6 25.6 25.6 25.5

167 25.5 25.5 25.5 25.4 25.4 25.4 25.3 25.3 25.3 25.2

168 25.2 25.2 25.1 25.1 25.1 25.1 25.0 25.0 25.0 24.9

169 24.9 24.9 24.9 24.8 24.8 24.8 24.7 24.7 24.7 24.6

170 24.6 24.6 24.6 24.5 24.5 24.5 24.4 24.4 24.4 24.4

171 24.3 24.3 24.3 24.2 24.2 24.2 24.2 24.1 24.1 24.1

172 24.1 24.0 24.0 24.0 23.9 23.9 23.9 23.9 23.8 23.8

173 23.8 23.7 23.7 23.7 23.7 23.6 23.6 23.6 23.6 23.5

174 23.5 23.5 23.4 23.4 23.4 23.4 23.3 23.3 23.3 23.3

175 23.2 23.2 23.2 23.2 23.1 23.1 23.1 23.0 23.0 23.0

176 23.0 22.9 22.9 22.9 22.9 22.8 22.8 22.8 22.8 22.7

177 22.7 22.7 22.7 22.6 22.6 22.6 22.6 22.5 22.5 22.5

178 22.5 22.4 22.4 22.4 22.4 22.3 22.3 22.3 22.3 22.2

179 22.2 22.2 22.2 22.1 22.1 22.1 22.1 22.0 22.0 22.0

180 22.0 21.9 21.9 21.9 21.9 21.8 21.8 21.8 21.8 21.7

181 21.7 21.7 21.7 21.6 21.6 21.6 21.6 21.6 21.5 21.5

182 21.5 21.5 21.4 21.4 21.4 21.4 21.3 21.3 21.3 21.3

183 21.2 21.2 21.2 21.2 21.2 21.1 21.1 21.1 21.1 21.0

184 21.0 21.0 21.0 20.9 20.9 20.9 20.9 20.9 20.8 20.8

185 20.8 20.8 20.7 20.7 20.7 20.7 20.7 20.6 20.6 20.6

186 20.6 20.5 20.5 20.5 20.5 20.5 20.4 20.4 20.4 20.4

187 20.3 20.3 20.3 20.3 20.3 20.2 20.2 20.2 20.2 20.2

188 20.1 20.1 20.1 20.1 20.0 20.0 20.0 20.0 20.0 19.9

189 19.9 19.9 19.9 19.9 19.8 19.8 19.8 19.8 19.8 19.7

190 19.7 19.7 19.7 19.6 19.6 19.6 19.6 19.6 19.5 19.5

191 19.5 19.5 19.5 19.4 19.4 19.4 19.4 19.4 19.3 19.3

192 19.3 19.3 19.3 19.2 19.2 19.2 19.2 19.2 19.1 19.1

193 19.1 19.1 19.1 19.0 19.0 19.0 19.0 19.0 18.9 18.9

194 18.9 18.9 18.9 18.8 18.8 18.8 18.8 18.8 18.7 18.7

195 18.7 18.7 18.7 18.7 18.6 18.6 18.6 18.6 18.6 18.5

196 18.5 18.5 18.5 18.5 18.4 18.4 18.4 18.4 18.4 18.4

L o a d 5 0 g f ( 0 . 0 5 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

11

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L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

24 2470 2450 2430 2410 2390 2371 2351 2332 2314 2295

25 2277 2259 2241 2223 2206 2188 2171 2154 2138 2121

26 2105 2089 2073 2057 2042 2026 2011 1996 1981 1967

27 1952 1938 1923 1909 1895 1882 1868 1855 1841 1828

28 1815 1802 1789 1777 1764 1752 1740 1728 1716 1704

29 1692 1680 1669 1658 1646 1635 1624 1613 1602 1592

30 1581 1571 1560 1550 1540 1530 1520 1510 1500 1490

31 1481 1471 1462 1453 1443 1434 1425 1416 1407 1398

32 1390 1381 1372 1364 1356 1347 1339 1331 1323 1315

33 1307 1299 1291 1283 1276 1268 1260 1253 1246 1238

34 1231 1224 1217 1210 1203 1196 1189 1182 1175 1168

35 1162 1155 1148 1142 1136 1129 1123 1117 1110 1104

36 1098 1092 1086 1080 1074 1068 1062 1057 1051 1045

37 1039 1034 1028 1023 1017 1012 1007 1001 996 991

38 985 980 975 970 965 960 955 950 945 940

39 936 931 926 921 917 912 907 903 898 894

40 889 885 881 876 872 868 863 859 855 851

41 847 842 838 834 830 826 822 818 814 811

42 807 803 799 795 792 788 784 780 777 773

43 770 766 762 759 755 752 749 745 742 738

44 735 732 728 725 722 719 715 712 709 706

45 703 700 697 693 690 687 684 681 678 675

46 672 670 667 664 661 658 655 652 650 647

47 644 641 639 636 633 631 628 625 623 620

48 618 615 613 610 607 605 602 600 598 595

49 593 590 588 585 583 581 578 576 574 571

50 569 567 565 562 560 558 556 554 551 549

51 547 545 543 541 539 537 534 532 530 528

52 526 524 522 520 518 516 514 512 510 509

53 507 505 503 501 499 497 495 493 492 490

54 488 486 484 483 481 479 477 476 474 472

55 470 469 467 465 464 462 460 459 457 455

56 454 452 451 449 447 446 444 443 441 440

57 438 436 435 433 432 430 429 427 426 424

58 423 422 420 419 417 416 414 413 412 410

59 409 407 406 405 403 402 401 399 398 397

60 395 394 393 391 390 389 387 386 385 384

61 382 381 380 379 377 376 375 374 373 371

62 370 369 368 367 365 364 363 362 361 360

63 359 357 356 355 354 353 352 351 350 349

64 347 346 345 344 343 342 341 340 339 338

65 337 336 335 334 333 332 331 330 329 328

66 327 326 325 324 323 322 321 320 319 318

67 317 316 315 314 313 312 311 310 310 309

68 308 307 306 305 304 303 302 302 301 300

12

Page 16: Hardness Conversion Tables

L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

69 299 298 297 296 295 295 294 293 292 291

70 290 290 289 288 287 286 285 285 284 283

71 282 281 281 280 279 278 278 277 276 275

72 274 274 273 272 271 271 270 269 268 268

73 267 266 266 265 264 263 263 262 261 261

74 260 259 258 258 257 256 256 255 254 254

75 253 252 252 251 250 250 249 248 248 247

76 246 246 245 244 244 243 243 242 241 241

77 240 239 239 238 238 237 236 236 235 234

78 234 233 233 232 232 231 230 230 229 229

79 228 227 227 226 226 225 225 224 223 223

80 222 222 221 221 220 220 219 219 218 217

81 217 216 216 215 215 214 214 213 213 212

82 212 211 211 210 210 209 209 208 208 207

83 207 206 206 205 205 204 204 203 203 202

84 202 201 201 200 200 199 199 198 198 197

85 197 196 196 196 195 195 194 194 193 193

86 192 192 192 191 191 190 190 189 189 188

87 188 188 187 187 186 186 185 185 185 184

88 184 183 183 183 182 182 181 181 180 180

89 180 179 179 178 178 178 177 177 176 176

90 176 175 175 175 174 174 173 173 173 172

91 172 171 171 171 170 170 170 169 169 168

92 168 168 167 167 167 166 166 166 165 165

93 165 164 164 163 163 163 162 162 162 161

94 161 161 160 160 160 159 159 159 158 158

95 158 157 157 157 156 156 156 155 155 155

96 154 154 154 153 153 153 152 152 152 152

97 151 151 151 150 150 150 149 149 149 148

98 148 148 148 147 147 147 146 146 146 145

99 145 145 145 144 144 144 143 143 143 143

100 142 142 142 141 141 141 141 140 140 140

101 139 139 139 139 138 138 138 138 137 137

102 137 137 136 136 136 135 135 135 135 134

103 134 134 134 133 133 133 133 132 132 132

104 132 131 131 131 131 130 130 130 130 129

105 129 129 129 128 128 128 128 127 127 127

106 127 126 126 126 126 125 125 125 125 125

107 124 124 124 124 123 123 123 123 122 122

108 122 122 122 121 121 121 121 120 120 120

109 120 120 119 119 119 119 118 118 118 118

110 118 117 117 117 117 117 116 116 116 116

111 115 115 115 115 115 114 114 114 114 114

112 113 113 113 113 113 112 112 112 112 112

113 111 111 111 111 111 110 110 110 110 110

13

Page 17: Hardness Conversion Tables

L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

114 109 109 109 109 109 109 108 108 108 108

115 108 107 107 107 107 107 106 106 106 106

116 106 106 105 105 105 105 105 104 104 104

117 104 104 104 103 103 103 103 103 103 102

118 102 102 102 102 102 101 101 101 101 101

119 100 100 100 100 99.8 99.6 99.5 99.3 99.1 99.0

120 98.8 98.7 98.5 98.3 98.2 98.0 97.8 97.7 97.5 97.4

121 97.2 97.0 96.9 96.7 96.6 96.4 96.2 96.1 95.9 95.8

122 95.6 95.4 95.3 95.1 95.0 94.8 94.7 94.5 94.4 94.2

123 94.1 93.9 93.8 93.6 93.4 93.3 93.1 93.0 92.8 92.7

124 92.5 92.4 92.2 92.1 92.0 91.8 91.7 91.5 91.4 91.2

125 91.1 90.9 90.8 90.6 90.5 90.3 90.2 90.1 89.9 89.8

126 89.6 89.5 89.3 89.2 89.1 88.9 88.8 88.6 88.5 88.4

127 88.2 88.1 87.9 87.8 87.7 87.5 87.4 87.3 87.1 87.0

128 86.9 86.7 86.6 86.4 86.3 86.2 86.0 85.9 85.8 85.6

129 85.5 85.4 85.2 85.1 85.0 84.9 84.7 84.6 84.5 84.3

130 84.2 84.1 83.9 83.8 83.7 83.6 83.4 83.3 83.2 83.0

131 82.9 82.8 82.7 82.5 82.4 82.3 82.2 82.0 81.9 81.8

132 81.7 81.5 81.4 81.3 81.2 81.1 80.9 80.8 80.7 80.6

133 80.4 80.3 80.2 80.1 80.0 79.8 79.7 79.6 79.5 79.4

134 79.2 79.1 79.0 78.9 78.8 78.7 78.5 78.4 78.3 78.2

135 78.1 78.0 77.8 77.7 77.6 77.5 77.4 77.3 77.2 77.0

136 76.9 76.8 76.7 76.6 76.5 76.4 76.3 76.1 76.0 75.9

137 75.8 75.7 75.6 75.5 75.4 75.3 75.2 75.0 74.9 74.8

138 74.7 74.6 74.5 74.4 74.3 74.2 74.1 74.0 73.9 73.8

139 73.7 73.5 73.4 73.3 73.2 73.1 73.0 72.9 72.8 72.7

140 72.6 72.5 72.4 72.3 72.2 72.1 72.0 71.9 71.8 71.7

141 71.6 71.5 71.4 71.3 71.2 71.1 71.0 70.9 70.8 70.7

142 70.6 70.5 70.4 70.3 70.2 70.1 70.0 69.9 69.8 69.7

143 69.6 69.5 69.4 69.3 69.2 69.1 69.0 68.9 68.8 68.7

144 68.6 68.5 68.4 68.3 68.2 68.2 68.1 68.0 67.9 67.8

145 67.7 67.6 67.5 67.4 67.3 67.2 67.1 67.0 66.9 66.8

146 66.8 66.7 66.6 66.5 66.4 66.3 66.2 66.1 66.0 65.9

147 65.9 65.8 65.7 65.6 65.5 65.4 65.3 65.2 65.1 65.1

148 65.0 64.9 64.8 64.7 64.6 64.5 64.4 64.4 64.3 64.2

149 64.1 64.0 63.9 63.8 63.8 63.7 63.6 63.5 63.4 63.3

150 63.2 63.2 63.1 63.0 62.9 62.8 62.7 62.7 62.6 62.5

151 62.4 62.3 62.2 62.2 62.1 62.0 61.9 61.8 61.8 61.7

152 61.6 61.5 61.4 61.3 61.3 61.2 61.1 61.0 60.9 60.9

153 60.8 60.7 60.6 60.6 60.5 60.4 60.3 60.2 60.2 60.1

154 60.0 59.9 59.8 59.8 59.7 59.6 59.5 59.5 59.4 59.3

155 59.2 59.2 59.1 59.0 58.9 58.8 58.8 58.7 58.6 58.5

156 58.5 58.4 58.3 58.2 58.2 58.1 58.0 58.0 57.9 57.8

157 57.7 57.7 57.6 57.5 57.4 57.4 57.3 57.2 57.1 57.1

158 57.0 56.9 56.9 56.8 56.7 56.6 56.6 56.5 56.4 56.4

14

Page 18: Hardness Conversion Tables

L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

159 56.3 56.2 56.1 56.1 56.0 55.9 55.9 55.8 55.7 55.7

160 55.6 55.5 55.4 55.4 55.3 55.2 55.2 55.1 55.0 55.0

161 54.9 54.8 54.8 54.7 54.6 54.6 54.5 54.4 54.4 54.3

162 54.2 54.2 54.1 54.0 54.0 53.9 53.8 53.8 53.7 53.6

163 53.6 53.5 53.4 53.4 53.3 53.2 53.2 53.1 53.0 53.0

164 52.9 52.8 52.8 52.7 52.7 52.6 52.5 52.5 52.4 52.3

165 52.3 52.2 52.1 52.1 52.0 52.0 51.9 51.8 51.8 51.7

166 51.6 51.6 51.5 51.5 51.4 51.3 51.3 51.2 51.1 51.1

167 51.0 51.0 50.9 50.8 50.8 50.7 50.7 50.6 50.5 50.5

168 50.4 50.4 50.3 50.2 50.2 50.1 50.1 50.0 49.9 49.9

169 49.8 49.8 49.7 49.6 49.6 49.5 49.5 49.4 49.4 49.3

170 49.2 49.2 49.1 49.1 49.0 49.0 48.9 48.8 48.8 48.7

171 48.7 48.6 48.6 48.5 48.4 48.4 48.3 48.3 48.2 48.2

172 48.1 48.0 48.0 47.9 47.9 47.8 47.8 47.7 47.7 47.6

173 47.5 47.5 47.4 47.4 47.3 47.3 47.2 47.2 47.1 47.1

174 47.0 46.9 46.9 46.8 46.8 46.7 46.7 46.6 46.6 46.5

175 46.5 46.4 46.4 46.3 46.3 46.2 46.1 46.1 46.0 46.0

176 45.9 45.9 45.8 45.8 45.7 45.7 45.6 45.6 45.5 45.5

177 45.4 45.4 45.3 45.3 45.2 45.2 45.1 45.1 45.0 45.0

178 44.9 44.9 44.8 44.8 44.7 44.7 44.6 44.6 44.5 44.5

179 44.4 44.4 44.3 44.3 44.2 44.2 44.1 44.1 44.0 44.0

180 43.9 43.9 43.8 43.8 43.7 43.7 43.6 43.6 43.5 43.5

181 43.4 43.4 43.3 43.3 43.2 43.2 43.1 43.1 43.1 43.0

182 43.0 42.9 42.9 42.8 42.8 42.7 42.7 42.6 42.6 42.5

183 42.5 42.4 42.4 42.4 42.3 42.3 42.2 42.2 42.1 42.1

184 42.0 42.0 41.9 41.9 41.8 41.8 41.8 41.7 41.7 41.6

185 41.6 41.5 41.5 41.4 41.4 41.4 41.3 41.3 41.2 41.2

186 41.1 41.1 41.0 41.0 41.0 40.9 40.9 40.8 40.8 40.7

187 40.7 40.6 40.6 40.6 40.5 40.5 40.4 40.4 40.3 40.3

188 40.3 40.2 40.2 40.1 40.1 40.0 40.0 40.0 39.9 39.9

189 39.8 39.8 39.8 39.7 39.7 39.6 39.6 39.5 39.5 39.5

190 39.4 39.4 39.3 39.3 39.3 39.2 39.2 39.1 39.1 39.0

191 39.0 39.0 38.9 38.9 38.8 38.8 38.8 38.7 38.7 38.6

192 38.6 38.6 38.5 38.5 38.4 38.4 38.4 38.3 38.3 38.2

193 38.2 38.2 38.1 38.1 38.0 38.0 38.0 37.9 37.9 37.8

194 37.8 37.8 37.7 37.7 37.7 37.6 37.6 37.5 37.5 37.5

195 37.4 37.4 37.3 37.3 37.3 37.2 37.2 37.2 37.1 37.1

196 37.0 37.0 37.0 36.9 36.9 36.9 36.8 36.8 36.7 36.7

197 36.7 36.6 36.6 36.6 36.5 36.5 36.4 36.4 36.4 36.3

198 36.3 36.3 36.2 36.2 36.2 36.1 36.1 36.0 36.0 36.0

199 35.9 35.9 35.9 35.8 35.8 35.8 35.7 35.7 35.6 35.6

200 35.6 35.5 35.5 35.5 35.4 35.4 35.4 35.3 35.3 35.3

201 35.2 35.2 35.2 35.1 35.1 35.0 35.0 35.0 34.9 34.9

202 34.9 34.8 34.8 34.8 34.7 34.7 34.7 34.6 34.6 34.6

203 34.5 34.5 34.5 34.4 34.4 34.4 34.3 34.3 34.3 34.2

15

Page 19: Hardness Conversion Tables

L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

34 2462 2448 2433 2419 2405 2391 2377 2364 2350 2337

35 2323 2310 2297 2284 2271 2258 2246 2233 2221 2208

36 2196 2184 2172 2160 2148 2136 2125 2113 2102 2090

37 2079 2068 2057 2046 2035 2024 2013 2002 1992 1981

38 1971 1961 1950 1940 1930 1920 1910 1900 1890 1881

39 1871 1862 1852 1843 1833 1824 1815 1806 1797 1788

40 1779 1770 1761 1752 1744 1735 1727 1718 1710 1701

41 1693 1685 1677 1669 1660 1652 1645 1637 1629 1621

42 1613 1606 1598 1591 1583 1576 1568 1561 1554 1546

43 1539 1532 1525 1518 1511 1504 1497 1490 1483 1477

44 1470 1463 1457 1450 1444 1437 1431 1424 1418 1412

45 1405 1399 1393 1387 1381 1375 1369 1363 1357 1351

46 1345 1339 1333 1328 1322 1316 1311 1305 1299 1294

47 1288 1283 1277 1272 1267 1261 1256 1251 1246 1240

48 1235 1230 1225 1220 1215 1210 1205 1200 1195 1190

49 1185 1181 1176 1171 1166 1162 1157 1152 1148 1143

50 1138 1134 1129 1125 1120 1116 1112 1107 1103 1098

51 1094 1090 1086 1081 1077 1073 1069 1065 1061 1057

52 1053 1048 1044 1040 1037 1033 1029 1025 1021 1017

53 1013 1009 1006 1002 998 994 991 987 983 980

54 976 972 969 965 962 958 955 951 948 944

55 941 937 934 931 927 924 921 917 914 911

56 908 904 901 898 895 892 888 885 882 879

57 876 873 870 867 864 861 858 855 852 849

58 846 843 840 837 834 832 829 826 823 820

59 818 815 812 809 807 804 801 799 796 793

60 791 788 785 783 780 778 775 772 770 767

61 765 762 760 757 755 752 750 748 745 743

62 740 738 736 733 731 729 726 724 722 719

63 717 715 713 710 708 706 704 701 699 697

64 695 693 691 688 686 684 682 680 678 676

65 674 672 669 667 665 663 661 659 657 655

66 653 651 649 647 646 644 642 640 638 636

67 634 632 630 628 626 625 623 621 619 617

68 615 614 612 610 608 607 605 603 601 600

69 598 596 594 593 591 589 588 586 584 582

70 581 579 578 576 574 573 571 569 568 566

71 565 563 561 560 558 557 555 554 552 551

72 549 547 546 544 543 541 540 538 537 536

73 534 533 531 530 528 527 525 524 523 521

74 520 518 517 516 514 513 511 510 509 507

75 506 505 503 502 501 499 498 497 495 494

76 493 491 490 489 488 486 485 484 483 481

77 480 479 478 476 475 474 473 471 470 469

78 468 467 465 464 463 462 461 459 458 457

16

Page 20: Hardness Conversion Tables

L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

79 456 455 454 453 451 450 449 448 447 446

80 445 444 442 441 440 439 438 437 436 435

81 434 433 432 431 430 428 427 426 425 424

82 423 422 421 420 419 418 417 416 415 414

83 413 412 411 410 409 408 407 406 405 404

84 403 402 401 400 400 399 398 397 396 395

85 394 393 392 391 390 389 388 388 387 386

86 385 384 383 382 381 380 379 379 378 377

87 376 375 374 373 373 372 371 370 369 368

88 368 367 366 365 364 363 363 362 361 360

89 359 358 358 357 356 355 355 354 353 352

90 351 351 350 349 348 347 347 346 345 344

91 344 343 342 341 341 340 339 338 338 337

92 336 336 335 334 333 333 332 331 330 330

93 329 328 328 327 326 326 325 324 323 323

94 322 321 321 320 319 319 318 317 317 316

95 315 315 314 313 313 312 311 311 310 309

96 309 308 308 307 306 306 305 304 304 303

97 302 302 301 301 300 299 299 298 298 297

98 296 296 295 295 294 293 293 292 292 291

99 290 290 289 289 288 287 287 286 286 285

100 285 284 283 283 282 282 281 281 280 280

101 279 278 278 277 277 276 276 275 275 274

102 274 273 272 272 271 271 270 270 269 269

103 268 268 267 267 266 266 265 265 264 264

104 263 263 262 262 261 261 260 260 259 259

105 258 258 257 257 256 256 255 255 254 254

106 253 253 252 252 251 251 250 250 250 249

107 249 248 248 247 247 246 246 245 245 244

108 244 244 243 243 242 242 241 241 240 240

109 240 239 239 238 238 237 237 236 236 236

110 235 235 234 234 234 233 233 232 232 231

111 231 231 230 230 229 229 229 228 228 227

112 227 226 226 226 225 225 224 224 224 223

113 223 222 222 222 221 221 221 220 220 219

114 219 219 218 218 217 217 217 216 216 216

115 215 215 214 214 214 213 213 213 212 212

116 212 211 211 210 210 210 209 209 209 208

117 208 208 207 207 206 206 206 205 205 205

118 204 204 204 203 203 203 202 202 202 201

119 201 201 200 200 200 199 199 199 198 198

120 198 197 197 197 196 196 196 195 195 195

121 194 194 194 193 193 193 192 192 192 192

122 191 191 191 190 190 190 189 189 189 188

123 188 188 188 187 187 187 186 186 186 185

17

Page 21: Hardness Conversion Tables

L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

124 185 185 184 184 184 184 183 183 183 182

125 182 182 182 181 181 181 180 180 180 180

126 179 179 179 178 178 178 178 177 177 177

127 176 176 176 176 175 175 175 175 174 174

128 174 173 173 173 173 172 172 172 172 171

129 171 171 170 170 170 170 169 169 169 169

130 168 168 168 168 167 167 167 167 166 166

131 166 166 165 165 165 165 164 164 164 164

132 163 163 163 163 162 162 162 162 161 161

133 161 161 160 160 160 160 159 159 159 159

134 158 158 158 158 158 157 157 157 157 156

135 156 156 156 155 155 155 155 155 154 154

136 154 154 153 153 153 153 153 152 152 152

137 152 151 151 151 151 151 150 150 150 150

138 149 149 149 149 149 148 148 148 148 148

139 147 147 147 147 146 146 146 146 146 145

140 145 145 145 145 144 144 144 144 144 143

141 143 143 143 143 142 142 142 142 142 141

142 141 141 141 141 140 140 140 140 140 139

143 139 139 139 139 138 138 138 138 138 137

144 137 137 137 137 136 136 136 136 136 136

145 135 135 135 135 135 134 134 134 134 134

146 134 133 133 133 133 133 132 132 132 132

147 132 132 131 131 131 131 131 130 130 130

148 130 130 130 129 129 129 129 129 129 128

149 128 128 128 128 128 127 127 127 127 127

150 126 126 126 126 126 126 125 125 125 125

151 125 125 124 124 124 124 124 124 124 123

152 123 123 123 123 123 122 122 122 122 122

153 122 121 121 121 121 121 121 120 120 120

154 120 120 120 120 119 119 119 119 119 119

155 118 118 118 118 118 118 118 117 117 117

156 117 117 117 116 116 116 116 116 116 116

157 115 115 115 115 115 115 115 114 114 114

158 114 114 114 114 113 113 113 113 113 113

159 113 112 112 112 112 112 112 112 111 111

160 111 111 111 111 111 110 110 110 110 110

161 110 110 110 109 109 109 109 109 109 109

162 108 108 108 108 108 108 108 108 107 107

163 107 107 107 107 107 106 106 106 106 106

164 106 106 106 105 105 105 105 105 105 105

165 105 104 104 104 104 104 104 104 104 103

166 103 103 103 103 103 103 103 102 102 102

167 102 102 102 102 102 101 101 101 101 101

168 101 101 101 100 100 100 100 100 99.9 99.8

18

Page 22: Hardness Conversion Tables

L o a d 2 0 0 g f ( 0 . 2 k g f )

169 99.6 99.5 99.4 99.3 99.2 99.1 98.9 98.8 98.7 98.6

170 98.5 98.4 98.2 98.1 98.0 97.9 97.8 97.7 97.6 97.4

171 97.3 97.2 97.1 97.0 96.9 96.8 96.6 96.5 96.4 96.3

172 96.2 96.1 96.0 95.9 95.8 95.6 95.5 95.4 95.3 95.2

173 95.1 95.0 94.9 94.8 94.7 94.5 94.4 94.3 94.2 94.1

174 94.0 93.9 93.8 93.7 93.6 93.5 93.4 93.3 93.1 93.0

175 92.9 92.8 92.7 92.6 92.5 92.4 92.3 92.2 92.1 92.0

176 91.9 91.8 91.7 91.6 91.5 91.4 91.3 91.2 91.0 90.9

177 90.8 90.7 90.6 90.5 90.4 90.3 90.2 90.1 90.0 89.9

178 89.8 89.7 89.6 89.5 89.4 89.3 89.2 89.1 89.0 88.9

179 88.8 88.7 88.6 88.5 88.4 88.3 88.2 88.1 88.0 87.9

180 87.8 87.7 87.6 87.5 87.5 87.4 87.3 87.2 87.1 87.0

181 86.9 86.8 86.7 86.6 86.5 86.4 86.3 86.2 86.1 86.0

182 85.9 85.8 85.7 85.6 85.5 85.4 85.4 85.3 85.2 85.1

183 85.0 84.9 84.8 84.7 84.6 84.5 84.4 84.3 84.2 84.2

184 84.1 84.0 83.9 83.8 83.7 83.6 83.5 83.4 83.3 83.2

185 83.2 83.1 83.0 82.9 82.8 82.7 82.6 82.5 82.4 82.4

186 82.3 82.2 82.1 82.0 81.9 81.8 81.7 81.6 81.6 81.5

187 81.4 81.3 81.2 81.1 81.0 81.0 80.9 80.8 80.7 80.6

188 80.5 80.4 80.4 80.3 80.2 80.1 80.0 79.9 79.8 79.8

189 79.7 79.6 79.5 79.4 79.3 79.3 79.2 79.1 79.0 78.9

190 78.8 78.8 78.7 78.6 78.5 78.4 78.3 78.3 78.2 78.1

191 78.0 77.9 77.9 77.8 77.7 77.6 77.5 77.4 77.4 77.3

192 77.2 77.1 77.0 77.0 76.9 76.8 76.7 76.6 76.6 76.5

193 76.4 76.3 76.2 76.2 76.1 76.0 75.9 75.9 75.8 75.7

194 75.6 75.5 75.5 75.4 75.3 75.2 75.2 75.1 75.0 74.9

195 74.8 74.8 74.7 74.6 74.5 74.5 74.4 74.3 74.2 74.2

196 74.1 74.0 73.9 73.9 73.8 73.7 73.6 73.6 73.5 73.4

197 73.3 73.3 73.2 73.1 73.0 73.0 72.9 72.8 72.7 72.7

198 72.6 72.5 72.4 72.4 72.3 72.2 72.2 72.1 72.0 71.9

199 71.9 71.8 71.7 71.7 71.6 71.5 71.4 71.4 71.3 71.2

200 71.2 71.1 71.0 70.9 70.9 70.8 70.7 70.7 70.6 70.5

201 70.4 70.4 70.3 70.2 70.2 70.1 70.0 70.0 69.9 69.8

202 69.7 69.7 69.6 69.5 69.5 69.4 69.3 69.3 69.2 69.1

203 69.1 69.0 68.9 68.9 68.8 68.7 68.7 68.6 68.5 68.5

204 68.4 68.3 68.3 68.2 68.1 68.1 68.0 67.9 67.9 67.8

205 67.7 67.7 67.6 67.5 67.5 67.4 67.3 67.3 67.2 67.1

206 67.1 67.0 66.9 66.9 66.8 66.7 66.7 66.6 66.5 66.5

207 66.4 66.4 66.3 66.2 66.2 66.1 66.0 66.0 65.9 65.8

208 65.8 65.7 65.7 65.6 65.5 65.5 65.4 65.3 65.3 65.2

209 65.2 65.1 65.0 65.0 64.9 64.8 64.8 64.7 64.7 64.6

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

19

Page 23: Hardness Conversion Tables

L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

42 2420 2409 2397 2386 2375 2363 2352 2341 2330 2320

43 2309 2298 2287 2277 2266 2256 2246 2235 2225 2215

44 2205 2195 2185 2175 2166 2156 2146 2137 2127 2118

45 2108 2099 2090 2080 2071 2062 2053 2044 2035 2026

46 2017 2009 2000 1991 1983 1974 1966 1957 1949 1941

47 1933 1924 1916 1908 1900 1892 1884 1876 1868 1861

48 1853 1845 1838 1830 1822 1815 1807 1800 1793 1785

49 1778 1771 1764 1756 1749 1742 1735 1728 1721 1714

50 1708 1701 1694 1687 1681 1674 1667 1661 1654 1648

51 1641 1635 1628 1622 1616 1610 1603 1597 1591 1585

52 1579 1573 1567 1561 1555 1549 1543 1537 1531 1526

53 1520 1514 1508 1503 1497 1491 1486 1480 1475 1469

54 1464 1459 1453 1448 1443 1437 1432 1427 1422 1416

55 1411 1406 1401 1396 1391 1386 1381 1376 1371 1366

56 1361 1356 1352 1347 1342 1337 1333 1328 1323 1319

57 1314 1309 1305 1300 1296 1291 1287 1282 1278 1273

58 1269 1265 1260 1256 1252 1247 1243 1239 1235 1231

59 1226 1222 1218 1214 1210 1206 1202 1198 1194 1190

60 1186 1182 1178 1174 1170 1166 1162 1159 1155 1151

61 1147 1144 1140 1136 1132 1129 1125 1121 1118 1114

62 1111 1107 1103 1100 1096 1093 1089 1086 1082 1079

63 1076 1072 1069 1065 1062 1059 1055 1052 1049 1046

64 1042 1039 1036 1033 1029 1026 1023 1020 1017 1014

65 1010 1007 1004 1001 998 995 992 989 986 983

66 980 977 974 971 968 965 962 960 957 954

67 951 948 945 943 940 937 934 931 929 926

68 923 921 918 915 912 910 907 905 902 899

69 897 894 891 889 886 884 881 879 876 874

70 871 869 866 864 861 859 856 854 852 849

71 847 844 842 840 837 835 833 830 828 826

72 823 821 819 817 814 812 810 808 805 803

73 801 799 797 795 792 790 788 786 784 782

74 780 777 775 773 771 769 767 765 763 761

75 759 757 755 753 751 749 747 745 743 741

76 739 737 735 733 731 729 728 726 724 722

77 720 718 716 714 713 711 709 707 705 703

78 702 700 698 696 695 693 691 689 688 686

79 684 682 681 679 677 675 674 672 670 669

80 667 665 664 662 660 659 657 656 654 652

81 651 649 647 646 644 643 641 640 638 636

82 635 633 632 630 629 627 626 624 623 621

83 620 618 617 615 614 612 611 609 608 606

84 605 604 602 601 599 598 596 595 594 592

85 591 589 588 587 585 584 583 581 580 579

86 577 576 575 573 572 571 569 568 567 565

20

Page 24: Hardness Conversion Tables

L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

87 564 563 561 560 559 558 556 555 554 553

88 551 550 549 548 546 545 544 543 541 540

89 539 538 537 535 534 533 532 531 529 528

90 527 526 525 524 522 521 520 519 518 517

91 516 514 513 512 511 510 509 508 507 505

92 504 503 502 501 500 499 498 497 496 495

93 494 493 491 490 489 488 487 486 485 484

94 483 482 481 480 479 478 477 476 475 474

95 473 472 471 470 469 468 467 466 465 464

96 463 462 461 460 459 458 457 457 456 455

97 454 453 452 451 450 449 448 447 446 445

98 445 444 443 442 441 440 439 438 437 436

99 436 435 434 433 432 431 430 429 429 428

100 427 426 425 424 424 423 422 421 420 419

101 418 418 417 416 415 414 414 413 412 411

102 410 410 409 408 407 406 406 405 404 403

103 402 402 401 400 399 399 398 397 396 395

104 395 394 393 392 392 391 390 389 389 388

105 387 386 386 385 384 384 383 382 381 381

106 380 379 379 378 377 376 376 375 374 374

107 373 372 371 371 370 369 369 368 367 367

108 366 365 365 364 363 363 362 361 361 360

109 359 359 358 357 357 356 355 355 354 353

110 353 352 352 351 350 350 349 348 348 347

111 346 346 345 345 344 343 343 342 342 341

112 340 340 339 339 338 337 337 336 336 335

113 334 334 333 333 332 331 331 330 330 329

114 328 328 327 327 326 326 325 324 324 323

115 323 322 322 321 321 320 319 319 318 318

116 317 317 316 316 315 315 314 313 313 312

117 312 311 311 310 310 309 309 308 308 307

118 307 306 306 305 305 304 303 303 302 302

119 301 301 300 300 299 299 298 298 297 297

120 296 296 295 295 294 294 294 293 293 292

121 292 291 291 290 290 289 289 288 288 287

122 287 286 286 285 285 284 284 284 283 283

123 282 282 281 281 280 280 279 279 279 278

124 278 277 277 276 276 275 275 275 274 274

125 273 273 272 272 271 271 271 270 270 269

126 269 268 268 268 267 267 266 266 266 265

127 265 264 264 263 263 263 262 262 261 261

128 261 260 260 259 259 259 258 258 257 257

129 257 256 256 255 255 255 254 254 253 253

130 253 252 252 251 251 251 250 250 250 249

131 249 248 248 248 247 247 246 246 246 245

21

Page 25: Hardness Conversion Tables

L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

132 245 245 244 244 244 243 243 242 242 242

133 241 241 241 240 240 240 239 239 238 238

134 238 237 237 237 236 236 236 235 235 235

135 234 234 234 233 233 233 232 232 231 231

136 231 230 230 230 229 229 229 228 228 228

137 227 227 227 226 226 226 225 225 225 224

138 224 224 224 223 223 223 222 222 222 221

139 221 221 220 220 220 219 219 219 218 218

140 218 217 217 217 217 216 216 216 215 215

141 215 214 214 214 214 213 213 213 212 212

142 212 211 211 211 211 210 210 210 209 209

143 209 208 208 208 208 207 207 207 206 206

144 206 206 205 205 205 204 204 204 204 203

145 203 203 202 202 202 202 201 201 201 201

146 200 200 200 199 199 199 199 198 198 198

147 198 197 197 197 196 196 196 196 195 195

148 195 195 194 194 194 194 193 193 193 193

149 192 192 192 192 191 191 191 190 190 190

150 190 189 189 189 189 188 188 188 188 187

151 187 187 187 186 186 186 186 186 185 185

152 185 185 184 184 184 184 183 183 183 183

153 182 182 182 182 181 181 181 181 180 180

154 180 180 180 179 179 179 179 178 178 178

155 178 177 177 177 177 177 176 176 176 176

156 175 175 175 175 175 174 174 174 174 173

157 173 173 173 173 172 172 172 172 171 171

158 171 171 171 170 170 170 170 170 169 169

159 169 169 168 168 168 168 168 167 167 167

160 167 167 166 166 166 166 166 165 165 165

161 165 164 164 164 164 164 163 163 163 163

162 163 162 162 162 162 162 161 161 161 161

163 161 160 160 160 160 160 159 159 159 159

164 159 159 158 158 158 158 158 157 157 157

165 157 157 156 156 156 156 156 155 155 155

166 155 155 155 154 154 154 154 154 153 153

167 153 153 153 153 152 152 152 152 152 151

168 151 151 151 151 151 150 150 150 150 150

169 149 149 149 149 149 149 148 148 148 148

170 148 148 147 147 147 147 147 147 146 146

171 146 146 146 145 145 145 145 145 145 144

172 144 144 144 144 144 143 143 143 143 143

173 143 142 142 142 142 142 142 141 141 141

174 141 141 141 141 140 140 140 140 140 140

175 139 139 139 139 139 139 138 138 138 138

176 138 138 138 137 137 137 137 137 137 136

22

Page 26: Hardness Conversion Tables

L o a d 3 0 0 g f ( 0 . 3 k g f )

177 136 136 136 136 136 135 135 135 135 135

178 135 135 134 134 134 134 134 134 134 133

179 133 133 133 133 133 132 132 132 132 132

180 132 132 131 131 131 131 131 131 131 130

181 130 130 130 130 130 130 129 129 129 129

182 129 129 129 128 128 128 128 128 128 128

183 127 127 127 127 127 127 127 127 126 126

184 126 126 126 126 126 125 125 125 125 125

185 125 125 124 124 124 124 124 124 124 124

186 123 123 123 123 123 123 123 122 122 122

187 122 122 122 122 122 121 121 121 121 121

188 121 121 121 120 120 120 120 120 120 120

189 120 119 119 119 119 119 119 119 119 118

190 118 118 118 118 118 118 118 117 117 117

191 117 117 117 117 117 116 116 116 116 116

192 116 116 116 115 115 115 115 115 115 115

193 115 114 114 114 114 114 114 114 114 114

194 113 113 113 113 113 113 113 113 112 112

195 112 112 112 112 112 112 112 111 111 111

196 111 111 111 111 111 111 110 110 110 110

197 110 110 110 110 110 109 109 109 109 109

198 109 109 109 109 108 108 108 108 108 108

199 108 108 108 107 107 107 107 107 107 107

200 107 107 107 106 106 106 106 106 106 106

201 106 106 105 105 105 105 105 105 105 105

202 105 105 104 104 104 104 104 104 104 104

203 104 103 103 103 103 103 103 103 103 103

204 103 102 102 102 102 102 102 102 102 102

205 102 101 101 101 101 101 101 101 101 101

206 101 101 100 100 100 100 100 99.9 99.8 99.7

207 99.6 99.5 99.4 99.3 99.2 99.1 99.1 99.0 98.9 98.8

208 98.7 98.6 98.5 98.4 98.3 98.2 98.1 98.0 97.9 97.8

209 97.7 97.6 97.5 97.5 97.4 97.3 97.2 97.1 97.0 96.9

210 96.8 96.7 96.6 96.5 96.4 96.3 96.3 96.2 96.1 96.0

211 95.9 95.8 95.7 95.6 95.5 95.4 95.3 95.3 95.2 95.1

212 95.0 94.9 94.8 94.7 94.6 94.5 94.4 94.4 94.3 94.2

213 94.1 94.0 93.9 93.8 93.7 93.7 93.6 93.5 93.4 93.3

214 93.2 93.1 93.0 93.0 92.9 92.8 92.7 92.6 92.5 92.4

215 92.4 92.3 92.2 92.1 92.0 91.9 91.8 91.8 91.7 91.6

216 91.5 91.4 91.3 91.2 91.2 91.1 91.0 90.9 90.8 90.7

217 90.7 90.6 90.5 90.4 90.3 90.2 90.2 90.1 90.0 89.9

218 89.8 89.7 89.7 89.6 89.5 89.4 89.3 89.3 89.2 89.1

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

23

Page 27: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

54 2440 2431 2422 2413 2404 2395 2387 2378 2369 2361

55 2352 2344 2335 2327 2318 2310 2302 2293 2285 2277

56 2269 2261 2253 2245 2237 2229 2221 2213 2205 2198

57 2190 2182 2175 2167 2159 2152 2145 2137 2130 2122

58 2115 2108 2101 2093 2086 2079 2072 2065 2058 2051

59 2044 2037 2030 2023 2017 2010 2003 1996 1990 1983

60 1976 1970 1963 1957 1950 1944 1937 1931 1925 1918

61 1912 1906 1900 1893 1887 1881 1875 1869 1863 1857

62 1851 1845 1839 1833 1827 1821 1816 1810 1804 1798

63 1793 1787 1781 1776 1770 1765 1759 1753 1748 1743

64 1737 1732 1726 1721 1716 1710 1705 1700 1694 1689

65 1684 1679 1674 1669 1663 1658 1653 1648 1643 1638

66 1633 1628 1624 1619 1614 1609 1604 1599 1594 1590

67 1585 1580 1576 1571 1566 1562 1557 1552 1548 1543

68 1539 1534 1530 1525 1521 1516 1512 1508 1503 1499

69 1494 1490 1486 1482 1477 1473 1469 1465 1460 1456

70 1452 1448 1444 1440 1436 1432 1427 1423 1419 1415

71 1411 1407 1404 1400 1396 1392 1388 1384 1380 1376

72 1372 1369 1365 1361 1357 1354 1350 1346 1342 1339

73 1335 1331 1328 1324 1321 1317 1313 1310 1306 1303

74 1299 1296 1292 1289 1285 1282 1278 1275 1272 1268

75 1265 1262 1258 1255 1252 1248 1245 1242 1238 1235

76 1232 1229 1225 1222 1219 1216 1213 1209 1206 1203

77 1200 1197 1194 1191 1188 1185 1182 1179 1175 1172

78 1169 1166 1163 1161 1158 1155 1152 1149 1146 1143

79 1140 1137 1134 1131 1129 1126 1123 1120 1117 1115

80 1112 1109 1106 1103 1101 1098 1095 1093 1090 1087

81 1084 1082 1079 1076 1074 1071 1069 1066 1063 1061

82 1058 1056 1053 1050 1048 1045 1043 1040 1038 1035

83 1033 1030 1028 1025 1023 1020 1018 1016 1013 1011

84 1008 1006 1004 1001 999 996 994 992 989 987

85 985 982 980 978 976 973 971 969 966 964

86 962 960 958 955 953 951 949 947 944 942

87 940 938 936 934 931 929 927 925 923 921

88 919 917 915 913 910 908 906 904 902 900

89 898 896 894 892 890 888 886 884 882 880

90 878 876 875 873 871 869 867 865 863 861

91 859 857 855 854 852 850 848 846 844 842

92 841 839 837 835 833 832 830 828 826 824

93 823 821 819 817 816 814 812 810 809 807

94 805 804 802 800 798 797 795 793 792 790

95 788 787 785 783 782 780 779 777 775 774

96 772 770 769 767 766 764 762 761 759 758

97 756 755 753 752 750 748 747 745 744 742

98 741 739 738 736 735 733 732 730 729 727

24

Page 28: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

99 726 724 723 722 720 719 717 716 714 713

100 712 710 709 707 706 704 703 702 700 699

101 697 696 695 693 692 691 689 688 687 685

102 684 683 681 680 679 677 676 675 673 672

103 671 669 668 667 665 664 663 662 660 659

104 658 657 655 654 653 652 650 649 648 647

105 645 644 643 642 640 639 638 637 636 634

106 633 632 631 630 628 627 626 625 624 623

107 621 620 619 618 617 616 615 613 612 611

108 610 609 608 607 606 604 603 602 601 600

109 599 598 597 596 594 593 592 591 590 589

110 588 587 586 585 584 583 582 581 580 579

111 577 576 575 574 573 572 571 570 569 568

112 567 566 565 564 563 562 561 560 559 558

113 557 556 555 554 553 552 551 550 549 548

114 547 547 546 545 544 543 542 541 540 539

115 538 537 536 535 534 533 532 532 531 530

116 529 528 527 526 525 524 523 522 522 521

117 520 519 518 517 516 515 514 514 513 512

118 511 510 509 508 508 507 506 505 504 503

119 502 502 501 500 499 498 497 497 496 495

120 494 493 492 492 491 490 489 488 488 487

121 486 485 484 484 483 482 481 480 480 479

122 478 477 476 476 475 474 473 473 472 471

123 470 470 469 468 467 466 466 465 464 463

124 463 462 461 461 460 459 458 458 457 456

125 455 455 454 453 452 452 451 450 450 449

126 448 447 447 446 445 445 444 443 443 442

127 441 440 440 439 438 438 437 436 436 435

128 434 434 433 432 432 431 430 430 429 428

129 428 427 426 426 425 424 424 423 422 422

130 421 420 420 419 418 418 417 417 416 415

131 415 414 413 413 412 411 411 410 410 409

132 408 408 407 406 406 405 405 404 403 403

133 402 402 401 400 400 399 399 398 397 397

134 396 396 395 394 394 393 393 392 392 391

135 390 390 389 389 388 388 387 386 386 385

136 385 384 384 383 382 382 381 381 380 380

137 379 379 378 377 377 376 376 375 375 374

138 374 373 373 372 371 371 370 370 369 369

139 368 368 367 367 366 366 365 365 364 364

140 363 362 362 361 361 360 360 359 359 358

141 358 357 357 356 356 355 355 354 354 353

142 353 352 352 351 351 350 350 349 349 348

143 348 347 347 346 346 346 345 345 344 344

25

Page 29: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

144 343 343 342 342 341 341 340 340 339 339

145 338 338 337 337 337 336 336 335 335 334

146 334 333 333 332 332 332 331 331 330 330

147 329 329 328 328 327 327 327 326 326 325

148 325 324 324 324 323 323 322 322 321 321

149 320 320 320 319 319 318 318 317 317 317

150 316 316 315 315 315 314 314 313 313 312

151 312 312 311 311 310 310 310 309 309 308

152 308 308 307 307 306 306 306 305 305 304

153 304 304 303 303 302 302 302 301 301 300

154 300 300 299 299 298 298 298 297 297 297

155 296 296 295 295 295 294 294 293 293 293

156 292 292 292 291 291 291 290 290 289 289

157 289 288 288 288 287 287 286 286 286 285

158 285 285 284 284 284 283 283 283 282 282

159 281 281 281 280 280 280 279 279 279 278

160 278 278 277 277 277 276 276 276 275 275

161 274 274 274 273 273 273 272 272 272 271

162 271 271 270 270 270 269 269 269 268 268

163 268 267 267 267 266 266 266 266 265 265

164 265 264 264 264 263 263 263 262 262 262

165 261 261 261 260 260 260 259 259 259 259

166 258 258 258 257 257 257 256 256 256 255

167 255 255 255 254 254 254 253 253 253 252

168 252 252 251 251 251 251 250 250 250 249

169 249 249 249 248 248 248 247 247 247 246

170 246 246 246 245 245 245 244 244 244 244

171 243 243 243 242 242 242 242 241 241 241

172 241 240 240 240 239 239 239 239 238 238

173 238 237 237 237 237 236 236 236 236 235

174 235 235 234 234 234 234 233 233 233 233

175 232 232 232 232 231 231 231 230 230 230

176 230 229 229 229 229 228 228 228 228 227

177 227 227 227 226 226 226 226 225 225 225

178 225 224 224 224 224 223 223 223 223 222

179 222 222 222 221 221 221 221 220 220 220

180 220 219 219 219 219 218 218 218 218 217

181 217 217 217 216 216 216 216 216 215 215

182 215 215 214 214 214 214 213 213 213 213

183 212 212 212 212 212 211 211 211 211 210

184 210 210 210 209 209 209 209 209 208 208

185 208 208 207 207 207 207 207 206 206 206

186 206 205 205 205 205 205 204 204 204 204

187 203 203 203 203 203 202 202 202 202 202

188 201 201 201 201 200 200 200 200 200 199

26

Page 30: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

191 195 195 195 194 194 194 194 194 193 193

192 193 193 193 192 192 192 192 192 191 191

193 191 191 191 190 190 190 190 190 189 189

194 189 189 189 188 188 188 188 188 187 187

195 187 187 187 187 186 186 186 186 186 185

196 185 185 185 185 184 184 184 184 184 184

197 183 183 183 183 183 182 182 182 182 182

198 181 181 181 181 181 181 180 180 180 180

199 180 179 179 179 179 179 179 178 178 178

200 178 178 178 177 177 177 177 177 176 176

201 176 176 176 176 175 175 175 175 175 175

202 174 174 174 174 174 174 173 173 173 173

203 173 172 172 172 172 172 172 171 171 171

204 171 171 171 170 170 170 170 170 170 169

205 169 169 169 169 169 168 168 168 168 168

206 168 168 167 167 167 167 167 167 166 166

207 166 166 166 166 165 165 165 165 165 165

208 164 164 164 164 164 164 164 163 163 163

209 163 163 163 162 162 162 162 162 162 161

210 161 161 161 161 161 161 160 160 160 160

211 160 160 160 159 159 159 159 159 159 158

212 158 158 158 158 158 158 157 157 157 157

213 157 157 157 156 156 156 156 156 156 156

214 155 155 155 155 155 155 154 154 154 154

215 154 154 154 153 153 153 153 153 153 153

216 152 152 152 152 152 152 152 152 151 151

217 151 151 151 151 151 150 150 150 150 150

218 150 150 149 149 149 149 149 149 149 148

219 148 148 148 148 148 148 148 147 147 147

220 147 147 147 147 146 146 146 146 146 146

221 146 146 145 145 145 145 145 145 145 144

222 144 144 144 144 144 144 144 143 143 143

223 143 143 143 143 143 142 142 142 142 142

224 142 142 142 141 141 141 141 141 141 141

225 141 140 140 140 140 140 140 140 140 139

226 139 139 139 139 139 139 139 138 138 138

227 138 138 138 138 138 137 137 137 137 137

228 137 137 137 137 136 136 136 136 136 136

229 136 136 135 135 135 135 135 135 135 135

230 134 134 134 134 134 134 134 134 134 133

231 133 133 133 133 133 133 133 133 132 132

232 132 132 132 132 132 132 132 131 131 131

233 131 131 131 131 131 130 130 130 130 130

234 130 130 130 130 129 129 129 129 129 129

235 129 129 129 129 128 128 128 128 128 128

27

Page 31: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

236 128 128 128 127 127 127 127 127 127 127

237 127 127 126 126 126 126 126 126 126 126

238 126 126 125 125 125 125 125 125 125 125

239 125 124 124 124 124 124 124 124 124 124

240 124 123 123 123 123 123 123 123 123 123

241 123 122 122 122 122 122 122 122 122 122

242 121 121 121 121 121 121 121 121 121 121

243 120 120 120 120 120 120 120 120 120 120

244 120 119 119 119 119 119 119 119 119 119

245 119 118 118 118 118 118 118 118 118 118

246 118 117 117 117 117 117 117 117 117 117

247 117 117 116 116 116 116 116 116 116 116

248 116 116 115 115 115 115 115 115 115 115

249 115 115 115 114 114 114 114 114 114 114

250 114 114 114 114 113 113 113 113 113 113

251 113 113 113 113 113 112 112 112 112 112

252 112 112 112 112 112 112 112 111 111 111

253 111 111 111 111 111 111 111 111 110 110

254 110 110 110 110 110 110 110 110 110 110

255 109 109 109 109 109 109 109 109 109 109

256 109 108 108 108 108 108 108 108 108 108

257 108 108 108 107 107 107 107 107 107 107

258 107 107 107 107 107 106 106 106 106 106

259 106 106 106 106 106 106 106 105 105 105

260 105 105 105 105 105 105 105 105 105 105

261 104 104 104 104 104 104 104 104 104 104

262 104 104 103 103 103 103 103 103 103 103

263 103 103 103 103 103 102 102 102 102 102

264 102 102 102 102 102 102 102 102 101 101

265 101 101 101 101 101 101 101 101 101 101

266 101 100 100 100 100 100 100 100 100 99.9

267 99.8 99.7 99.7 99.6 99.5 99.4 99.4 99.3 99.2 99.1

268 99.1 99.0 98.9 98.8 98.8 98.7 98.6 98.5 98.5 98.4

269 98.3 98.3 98.2 98.1 98.0 98.0 97.9 97.8 97.7 97.7

270 97.6 97.5 97.5 97.4 97.3 97.2 97.2 97.1 97.0 97.0

271 96.9 96.8 96.7 96.7 96.6 96.5 96.5 96.4 96.3 96.2

272 96.2 96.1 96.0 96.0 95.9 95.8 95.7 95.7 95.6 95.5

273 95.5 95.4 95.3 95.3 95.2 95.1 95.0 95.0 94.9 94.8

274 94.8 94.7 94.6 94.6 94.5 94.4 94.4 94.3 94.2 94.2

275 94.1 94.0 93.9 93.9 93.8 93.7 93.7 93.6 93.5 93.5

276 93.4 93.3 93.3 93.2 93.1 93.1 93.0 92.9 92.9 92.8

277 92.7 92.7 92.6 92.5 92.5 92.4 92.3 92.3 92.2 92.1

278 92.1 92.0 91.9 91.9 91.8 91.7 91.7 91.6 91.5 91.5

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

28

Page 32: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

76 2464 2457 2451 2444 2438 2432 2425 2419 2413 2406

77 2400 2394 2388 2381 2375 2369 2363 2357 2351 2345

78 2339 2333 2327 2321 2315 2309 2303 2297 2292 2286

79 2280 2274 2269 2263 2257 2251 2246 2240 2235 2229

80 2223 2218 2212 2207 2201 2196 2190 2185 2180 2174

81 2169 2164 2158 2153 2148 2142 2137 2132 2127 2121

82 2116 2111 2106 2101 2096 2091 2086 2081 2076 2071

83 2066 2061 2056 2051 2046 2041 2036 2031 2026 2022

84 2017 2012 2007 2002 1998 1993 1988 1984 1979 1974

85 1970 1965 1960 1956 1951 1947 1942 1938 1933 1928

86 1924 1920 1915 1911 1906 1902 1897 1893 1889 1884

87 1880 1876 1871 1867 1863 1859 1854 1850 1846 1842

88 1838 1833 1829 1825 1821 1817 1813 1809 1805 1801

89 1796 1792 1788 1784 1780 1776 1773 1769 1765 1761

90 1757 1753 1749 1745 1741 1737 1734 1730 1726 1722

91 1718 1715 1711 1707 1703 1700 1696 1692 1689 1685

92 1681 1678 1674 1670 1667 1663 1660 1656 1652 1649

93 1645 1642 1638 1635 1631 1628 1624 1621 1617 1614

94 1610 1607 1604 1600 1597 1593 1590 1587 1583 1580

95 1577 1573 1570 1567 1564 1560 1557 1554 1551 1547

96 1544 1541 1538 1534 1531 1528 1525 1522 1519 1516

97 1512 1509 1506 1503 1500 1497 1494 1491 1488 1485

98 1482 1479 1476 1473 1470 1467 1464 1461 1458 1455

99 1452 1449 1446 1443 1440 1437 1434 1432 1429 1426

100 1423 1420 1417 1415 1412 1409 1406 1403 1401 1398

101 1395 1392 1389 1387 1384 1381 1379 1376 1373 1370

102 1368 1365 1362 1360 1357 1354 1352 1349 1347 1344

103 1341 1339 1336 1334 1331 1328 1326 1323 1321 1318

104 1316 1313 1311 1308 1306 1303 1301 1298 1296 1293

105 1291 1288 1286 1283 1281 1278 1276 1274 1271 1269

106 1266 1264 1262 1259 1257 1255 1252 1250 1248 1245

107 1243 1241 1238 1236 1234 1231 1229 1227 1225 1222

108 1220 1218 1215 1213 1211 1209 1207 1204 1202 1200

109 1198 1196 1193 1191 1189 1187 1185 1182 1180 1178

110 1176 1174 1172 1170 1168 1165 1163 1161 1159 1157

111 1155 1153 1151 1149 1147 1145 1143 1141 1138 1136

112 1134 1132 1130 1128 1126 1124 1122 1120 1118 1116

113 1114 1112 1110 1109 1107 1105 1103 1101 1099 1097

114 1095 1093 1091 1089 1087 1085 1084 1082 1080 1078

115 1076 1074 1072 1070 1069 1067 1065 1063 1061 1059

116 1058 1056 1054 1052 1050 1048 1047 1045 1043 1041

117 1040 1038 1036 1034 1032 1031 1029 1027 1025 1024

118 1022 1020 1019 1017 1015 1013 1012 1010 1008 1007

119 1005 1003 1002 1000 998 996 995 993 991 990

120 988 987 985 983 982 980 978 977 975 974

29

Page 33: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

121 972 970 969 967 966 964 962 961 959 958

122 956 954 953 951 950 948 947 945 944 942

123 941 939 938 936 934 933 931 930 928 927

124 925 924 922 921 920 918 917 915 914 912

125 911 909 908 906 905 903 902 901 899 898

126 896 895 893 892 891 889 888 886 885 884

127 882 881 879 878 877 875 874 873 871 870

128 869 867 866 864 863 862 860 859 858 856

129 855 854 852 851 850 849 847 846 845 843

130 842 841 839 838 837 836 834 833 832 830

131 829 828 827 825 824 823 822 820 819 818

132 817 815 814 813 812 811 809 808 807 806

133 804 803 802 801 800 798 797 796 795 794

134 792 791 790 789 788 787 785 784 783 782

135 781 780 778 777 776 775 774 773 772 770

136 769 768 767 766 765 764 763 761 760 759

137 758 757 756 755 754 753 752 750 749 748

138 747 746 745 744 743 742 741 740 739 738

139 737 735 734 733 732 731 730 729 728 727

140 726 725 724 723 722 721 720 719 718 717

141 716 715 714 713 712 711 710 709 708 707

142 706 705 704 703 702 701 700 699 698 697

143 696 695 694 693 692 691 690 689 688 687

144 686 685 684 683 682 682 681 680 679 678

145 677 676 675 674 673 672 671 670 669 668

146 668 667 666 665 664 663 662 661 660 659

147 659 658 657 656 655 654 653 652 651 651

148 650 649 648 647 646 645 644 644 643 642

149 641 640 639 638 638 637 636 635 634 633

150 632 632 631 630 629 628 627 627 626 625

151 624 623 622 622 621 620 619 618 618 617

152 616 615 614 613 613 612 611 610 609 609

153 608 607 606 606 605 604 603 602 602 601

154 600 599 598 598 597 596 595 595 594 593

155 592 592 591 590 589 588 588 587 586 585

156 585 584 583 582 582 581 580 580 579 578

157 577 577 576 575 574 574 573 572 571 571

158 570 569 569 568 567 566 566 565 564 564

159 563 562 561 561 560 559 559 558 557 557

160 556 555 554 554 553 552 552 551 550 550

161 549 548 548 547 546 546 545 544 544 543

162 542 542 541 540 540 539 538 538 537 536

163 536 535 534 534 533 532 532 531 530 530

164 529 528 528 527 527 526 525 525 524 523

165 523 522 521 521 520 520 519 518 518 517

30

Page 34: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

166 516 516 515 515 514 513 513 512 511 511

167 510 510 509 508 508 507 507 506 505 505

168 504 504 503 502 502 501 501 500 499 499

169 498 498 497 496 496 495 495 494 494 493

170 492 492 491 491 490 490 489 488 488 487

171 487 486 486 485 484 484 483 483 482 482

172 481 480 480 479 479 478 478 477 477 476

173 475 475 474 474 473 473 472 472 471 471

174 470 469 469 468 468 467 467 466 466 465

175 465 464 464 463 463 462 461 461 460 460

176 459 459 458 458 457 457 456 456 455 455

177 454 454 453 453 452 452 451 451 450 450

178 449 449 448 448 447 447 446 446 445 445

179 444 444 443 443 442 442 441 441 440 440

180 439 439 438 438 437 437 436 436 435 435

181 434 434 433 433 432 432 431 431 431 430

182 430 429 429 428 428 427 427 426 426 425

183 425 424 424 424 423 423 422 422 421 421

184 420 420 419 419 418 418 418 417 417 416

185 416 415 415 414 414 414 413 413 412 412

186 411 411 410 410 410 409 409 408 408 407

187 407 406 406 406 405 405 404 404 403 403

188 403 402 402 401 401 400 400 400 399 399

189 398 398 398 397 397 396 396 395 395 395

190 394 394 393 393 393 392 392 391 391 390

191 390 390 389 389 388 388 388 387 387 386

192 386 386 385 385 384 384 384 383 383 382

193 382 382 381 381 380 380 380 379 379 378

194 378 378 377 377 377 376 376 375 375 375

195 374 374 373 373 373 372 372 372 371 371

196 370 370 370 369 369 369 368 368 367 367

197 367 366 366 366 365 365 364 364 364 363

198 363 363 362 362 362 361 361 360 360 360

199 359 359 359 358 358 358 357 357 356 356

200 356 355 355 355 354 354 354 353 353 353

201 352 352 352 351 351 350 350 350 349 349

202 349 348 348 348 347 347 347 346 346 346

203 345 345 345 344 344 344 343 343 343 342

204 342 342 341 341 341 340 340 340 339 339

205 339 338 338 338 337 337 337 336 336 336

206 335 335 335 334 334 334 333 333 333 332

207 332 332 331 331 331 330 330 330 330 329

208 329 329 328 328 328 327 327 327 326 326

209 326 325 325 325 325 324 324 324 323 323

210 323 322 322 322 321 321 321 321 320 320

31

Page 35: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

211 320 319 319 319 318 318 318 318 317 317

212 317 316 316 316 315 315 315 315 314 314

213 314 313 313 313 312 312 312 312 311 311

214 311 310 310 310 310 309 309 309 308 308

215 308 308 307 307 307 306 306 306 306 305

216 305 305 304 304 304 304 303 303 303 302

217 302 302 302 301 301 301 301 300 300 300

218 299 299 299 299 298 298 298 298 297 297

219 297 296 296 296 296 295 295 295 295 294

220 294 294 293 293 293 293 292 292 292 292

221 291 291 291 291 290 290 290 290 289 289

222 289 288 288 288 288 287 287 287 287 286

223 286 286 286 285 285 285 285 284 284 284

224 284 283 283 283 283 282 282 282 282 281

225 281 281 281 280 280 280 280 279 279 279

226 279 278 278 278 278 277 277 277 277 276

227 276 276 276 275 275 275 275 274 274 274

228 274 273 273 273 273 273 272 272 272 272

229 271 271 271 271 270 270 270 270 269 269

230 269 269 269 268 268 268 268 267 267 267

231 267 266 266 266 266 266 265 265 265 265

232 264 264 264 264 263 263 263 263 263 262

233 262 262 262 261 261 261 261 261 260 260

234 260 260 259 259 259 259 259 258 258 258

235 258 257 257 257 257 257 256 256 256 256

236 255 255 255 255 255 254 254 254 254 254

237 253 253 253 253 252 252 252 252 252 251

238 251 251 251 251 250 250 250 250 250 249

239 249 249 249 248 248 248 248 248 247 247

240 247 247 247 246 246 246 246 246 245 245

241 245 245 245 244 244 244 244 244 243 243

242 243 243 243 242 242 242 242 242 241 241

243 241 241 241 240 240 240 240 240 239 239

244 239 239 239 238 238 238 238 238 237 237

245 237 237 237 236 236 236 236 236 236 235

246 235 235 235 235 234 234 234 234 234 233

247 233 233 233 233 232 232 232 232 232 232

248 231 231 231 231 231 230 230 230 230 230

249 230 229 229 229 229 229 228 228 228 228

250 228 227 227 227 227 227 227 226 226 226

251 226 226 226 225 225 225 225 225 224 224

252 224 224 224 224 223 223 223 223 223 222

253 222 222 222 222 222 221 221 221 221 221

254 221 220 220 220 220 220 220 219 219 219

255 219 219 218 218 218 218 218 218 217 217

32

Page 36: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

256 217 217 217 217 216 216 216 216 216 216

257 215 215 215 215 215 215 214 214 214 214

258 214 214 213 213 213 213 213 213 212 212

259 212 212 212 212 211 211 211 211 211 211

260 211 210 210 210 210 210 210 209 209 209

261 209 209 209 208 208 208 208 208 208 207

262 207 207 207 207 207 207 206 206 206 206

263 206 206 205 205 205 205 205 205 204 204

264 204 204 204 204 204 203 203 203 203 203

265 203 202 202 202 202 202 202 202 201 201

266 201 201 201 201 201 200 200 200 200 200

267 200 199 199 199 199 199 199 199 198 198

268 198 198 198 198 198 197 197 197 197 197

269 197 197 196 196 196 196 196 196 195 195

270 195 195 195 195 195 194 194 194 194 194

271 194 194 193 193 193 193 193 193 193 192

272 192 192 192 192 192 192 191 191 191 191

273 191 191 191 191 190 190 190 190 190 190

274 190 189 189 189 189 189 189 189 188 188

275 188 188 188 188 188 187 187 187 187 187

276 187 187 187 186 186 186 186 186 186 186

277 185 185 185 185 185 185 185 185 184 184

278 184 184 184 184 184 183 183 183 183 183

279 183 183 183 182 182 182 182 182 182 182

280 182 181 181 181 181 181 181 181 180 180

281 180 180 180 180 180 180 179 179 179 179

282 179 179 179 179 178 178 178 178 178 178

283 178 178 177 177 177 177 177 177 177 177

284 176 176 176 176 176 176 176 176 175 175

285 175 175 175 175 175 175 174 174 174 174

286 174 174 174 174 173 173 173 173 173 173

287 173 173 173 172 172 172 172 172 172 172

288 172 171 171 171 171 171 171 171 171 170

289 170 170 170 170 170 170 170 170 169 169

290 169 169 169 169 169 169 169 168 168 168

291 168 168 168 168 168 167 167 167 167 167

292 167 167 167 167 166 166 166 166 166 166

293 166 166 166 165 165 165 165 165 165 165

294 165 165 164 164 164 164 164 164 164 164

295 164 163 163 163 163 163 163 163 163 163

296 162 162 162 162 162 162 162 162 162 161

297 161 161 161 161 161 161 161 161 160 160

298 160 160 160 160 160 160 160 159 159 159

299 159 159 159 159 159 159 159 158 158 158

300 158 158 158 158 158 158 157 157 157 157

33

Page 37: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

301 157 157 157 157 157 157 156 156 156 156

302 156 156 156 156 156 156 155 155 155 155

303 155 155 155 155 155 154 154 154 154 154

304 154 154 154 154 154 153 153 153 153 153

305 153 153 153 153 153 152 152 152 152 152

306 152 152 152 152 152 151 151 151 151 151

307 151 151 151 151 151 150 150 150 150 150

308 150 150 150 150 150 150 149 149 149 149

309 149 149 149 149 149 149 148 148 148 148

310 148 148 148 148 148 148 148 147 147 147

311 147 147 147 147 147 147 147 146 146 146

312 146 146 146 146 146 146 146 146 145 145

313 145 145 145 145 145 145 145 145 145 144

314 144 144 144 144 144 144 144 144 144 144

315 143 143 143 143 143 143 143 143 143 143

316 143 142 142 142 142 142 142 142 142 142

317 142 142 141 141 141 141 141 141 141 141

318 141 141 141 140 140 140 140 140 140 140

319 140 140 140 140 139 139 139 139 139 139

320 139 139 139 139 139 139 138 138 138 138

321 138 138 138 138 138 138 138 138 137 137

322 137 137 137 137 137 137 137 137 137 136

323 136 136 136 136 136 136 136 136 136 136

324 136 135 135 135 135 135 135 135 135 135

325 135 135 135 134 134 134 134 134 134 134

326 134 134 134 134 134 133 133 133 133 133

327 133 133 133 133 133 133 133 133 132 132

328 132 132 132 132 132 132 132 132 132 132

329 131 131 131 131 131 131 131 131 131 131

330 131 131 131 130 130 130 130 130 130 130

331 130 130 130 130 130 129 129 129 129 129

332 129 129 129 129 129 129 129 129 128 128

333 128 128 128 128 128 128 128 128 128 128

334 128 127 127 127 127 127 127 127 127 127

335 127 127 127 127 126 126 126 126 126 126

336 126 126 126 126 126 126 126 126 125 125

337 125 125 125 125 125 125 125 125 125 125

338 125 124 124 124 124 124 124 124 124 124

339 124 124 124 124 124 123 123 123 123 123

340 123 123 123 123 123 123 123 123 123 122

341 122 122 122 122 122 122 122 122 122 122

342 122 122 122 121 121 121 121 121 121 121

343 121 121 121 121 121 121 121 120 120 120

344 120 120 120 120 120 120 120 120 120 120

345 120 119 119 119 119 119 119 119 119 119

34

Page 38: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

346 119 119 119 119 119 119 118 118 118 118

347 118 118 118 118 118 118 118 118 118 118

348 118 117 117 117 117 117 117 117 117 117

349 117 117 117 117 117 116 116 116 116 116

350 116 116 116 116 116 116 116 116 116 116

351 116 115 115 115 115 115 115 115 115 115

352 115 115 115 115 115 115 114 114 114 114

353 114 114 114 114 114 114 114 114 114 114

354 114 113 113 113 113 113 113 113 113 113

355 113 113 113 113 113 113 113 112 112 112

356 112 112 112 112 112 112 112 112 112 112

357 112 112 112 111 111 111 111 111 111 111

358 111 111 111 111 111 111 111 111 111 110

359 110 110 110 110 110 110 110 110 110 110

360 110 110 110 110 110 109 109 109 109 109

361 109 109 109 109 109 109 109 109 109 109

362 109 109 108 108 108 108 108 108 108 108

363 108 108 108 108 108 108 108 108 108 107

364 107 107 107 107 107 107 107 107 107 107

365 107 107 107 107 107 107 106 106 106 106

366 106 106 106 106 106 106 106 106 106 106

367 106 106 106 105 105 105 105 105 105 105

368 105 105 105 105 105 105 105 105 105 105

369 105 104 104 104 104 104 104 104 104 104

370 104 104 104 104 104 104 104 104 103 103

371 103 103 103 103 103 103 103 103 103 103

372 103 103 103 103 103 103 102 102 102 102

373 102 102 102 102 102 102 102 102 102 102

374 102 102 102 102 102 101 101 101 101 101

375 101 101 101 101 101 101 101 101 101 101

376 101 101 101 100 100 100 100 100 100 100

377 100 100 100 100 99.9 99.9 99.8 99.7 99.7 99.6

378 99.6 99.5 99.5 99.4 99.4 99.3 99.3 99.2 99.2 99.1

379 99.1 99.0 99.0 98.9 98.9 98.8 98.8 98.7 98.6 98.6

380 98.5 98.5 98.4 98.4 98.3 98.3 98.2 98.2 98.1 98.1

381 98.0 98.0 97.9 97.9 97.8 97.8 97.7 97.7 97.6 97.6

382 97.5 97.5 97.4 97.4 97.3 97.3 97.2 97.2 97.1 97.1

383 97.0 97.0 96.9 96.9 96.8 96.8 96.7 96.7 96.6 96.6

384 96.5 96.5 96.4 96.4 96.3 96.3 96.2 96.2 96.1 96.1

385 96.0 96.0 95.9 95.9 95.8 95.8 95.7 95.7 95.6 95.6

386 95.5 95.5 95.4 95.4 95.3 95.3 95.2 95.2 95.1 95.1

387 95.0 95.0 94.9 94.9 94.8 94.8 94.7 94.7 94.6 94.6

388 94.5 94.5 94.4 94.4 94.3 94.3 94.2 94.2 94.1 94.1

389 94.0 94.0 93.9 93.9 93.8 93.8 93.7 93.7 93.7 93.6

390 93.6 93.5 93.5 93.4 93.4 93.3 93.3 93.2 93.2 93.1

35

Page 39: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

107 2486 2481 2477 2472 2467 2463 2458 2454 2449 2445

108 2440 2435 2431 2426 2422 2418 2413 2409 2404 2400

109 2395 2391 2387 2382 2378 2374 2369 2365 2361 2356

110 2352 2348 2344 2339 2335 2331 2327 2322 2318 2314

111 2310 2306 2302 2297 2293 2289 2285 2281 2277 2273

112 2269 2265 2261 2257 2253 2249 2245 2241 2237 2233

113 2229 2225 2221 2217 2213 2209 2205 2201 2198 2194

114 2190 2186 2182 2178 2175 2171 2167 2163 2159 2156

115 2152 2148 2145 2141 2137 2133 2130 2126 2122 2119

116 2115 2111 2108 2104 2101 2097 2093 2090 2086 2083

117 2079 2075 2072 2068 2065 2061 2058 2054 2051 2047

118 2044 2040 2037 2034 2030 2027 2023 2020 2017 2013

119 2010 2006 2003 2000 1996 1993 1990 1986 1983 1980

120 1976 1973 1970 1967 1963 1960 1957 1954 1950 1947

121 1944 1941 1937 1934 1931 1928 1925 1922 1918 1915

122 1912 1909 1906 1903 1900 1897 1893 1890 1887 1884

123 1881 1878 1875 1872 1869 1866 1863 1860 1857 1854

124 1851 1848 1845 1842 1839 1836 1833 1830 1827 1824

125 1821 1819 1816 1813 1810 1807 1804 1801 1798 1795

126 1793 1790 1787 1784 1781 1778 1776 1773 1770 1767

127 1765 1762 1759 1756 1753 1751 1748 1745 1743 1740

128 1737 1734 1732 1729 1726 1724 1721 1718 1716 1713

129 1710 1708 1705 1702 1700 1697 1694 1692 1689 1687

130 1684 1681 1679 1676 1674 1671 1669 1666 1663 1661

131 1658 1656 1653 1651 1648 1646 1643 1641 1638 1636

132 1633 1631 1628 1626 1624 1621 1619 1616 1614 1611

133 1609 1606 1604 1602 1599 1597 1594 1592 1590 1587

134 1585 1583 1580 1578 1576 1573 1571 1569 1566 1564

135 1562 1559 1557 1555 1552 1550 1548 1546 1543 1541

136 1539 1536 1534 1532 1530 1527 1525 1523 1521 1519

137 1516 1514 1512 1510 1508 1505 1503 1501 1499 1497

138 1494 1492 1490 1488 1486 1484 1482 1479 1477 1475

139 1473 1471 1469 1467 1465 1462 1460 1458 1456 1454

140 1452 1450 1448 1446 1444 1442 1440 1438 1436 1434

141 1432 1429 1427 1425 1423 1421 1419 1417 1415 1413

142 1411 1409 1407 1405 1404 1402 1400 1398 1396 1394

143 1392 1390 1388 1386 1384 1382 1380 1378 1376 1374

144 1372 1371 1369 1367 1365 1363 1361 1359 1357 1355

145 1354 1352 1350 1348 1346 1344 1342 1341 1339 1337

146 1335 1333 1331 1330 1328 1326 1324 1322 1321 1319

147 1317 1315 1313 1312 1310 1308 1306 1305 1303 1301

148 1299 1298 1296 1294 1292 1291 1289 1287 1285 1284

149 1282 1280 1278 1277 1275 1273 1272 1270 1268 1267

150 1265 1263 1262 1260 1258 1256 1255 1253 1252 1250

151 1248 1247 1245 1243 1242 1240 1238 1237 1235 1233

36

Page 40: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

152 1232 1230 1229 1227 1225 1224 1222 1221 1219 1217

153 1216 1214 1213 1211 1209 1208 1206 1205 1203 1202

154 1200 1198 1197 1195 1194 1192 1191 1189 1188 1186

155 1185 1183 1182 1180 1179 1177 1175 1174 1172 1171

156 1169 1168 1166 1165 1163 1162 1161 1159 1158 1156

157 1155 1153 1152 1150 1149 1147 1146 1144 1143 1141

158 1140 1139 1137 1136 1134 1133 1131 1130 1129 1127

159 1126 1124 1123 1122 1120 1119 1117 1116 1115 1113

160 1112 1110 1109 1108 1106 1105 1103 1102 1101 1099

161 1098 1097 1095 1094 1093 1091 1090 1088 1087 1086

162 1084 1083 1082 1080 1079 1078 1076 1075 1074 1072

163 1071 1070 1069 1067 1066 1065 1063 1062 1061 1059

164 1058 1057 1056 1054 1053 1052 1050 1049 1048 1047

165 1045 1044 1043 1042 1040 1039 1038 1037 1035 1034

166 1033 1032 1030 1029 1028 1027 1025 1024 1023 1022

167 1020 1019 1018 1017 1016 1014 1013 1012 1011 1010

168 1008 1007 1006 1005 1004 1002 1001 1000 999 998

169 996 995 994 993 992 991 989 988 987 986

170 985 984 982 981 980 979 978 977 976 974

171 973 972 971 970 969 968 966 965 964 963

172 962 961 960 959 958 956 955 954 953 952

173 951 950 949 948 947 945 944 943 942 941

174 940 939 938 937 936 935 934 933 931 930

175 929 928 927 926 925 924 923 922 921 920

176 919 918 917 916 915 914 913 912 910 909

177 908 907 906 905 904 903 902 901 900 899

178 898 897 896 895 894 893 892 891 890 889

179 888 887 886 885 884 883 882 881 880 879

180 878 877 876 875 875 874 873 872 871 870

181 869 868 867 866 865 864 863 862 861 860

182 859 858 857 856 855 854 854 853 852 851

183 850 849 848 847 846 845 844 843 842 842

184 841 840 839 838 837 836 835 834 833 832

185 832 831 830 829 828 827 826 825 824 824

186 823 822 821 820 819 818 817 816 816 815

187 814 813 812 811 810 810 809 808 807 806

188 805 804 804 803 802 801 800 799 798 798

189 797 796 795 794 793 793 792 791 790 789

190 788 788 787 786 785 784 783 783 782 781

191 780 779 779 778 777 776 775 774 774 773

192 772 771 770 770 769 768 767 766 766 765

193 764 763 762 762 761 760 759 759 758 757

194 756 755 755 754 753 752 752 751 750 749

195 748 748 747 746 745 745 744 743 742 742

196 741 740 739 739 738 737 736 736 735 734

37

Page 41: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

197 733 733 732 731 730 730 729 728 727 727

198 726 725 724 724 723 722 722 721 720 719

199 719 718 717 717 716 715 714 714 713 712

200 712 711 710 709 709 708 707 707 706 705

201 704 704 703 702 702 701 700 700 699 698

202 697 697 696 695 695 694 693 693 692 691

203 691 690 689 689 688 687 687 686 685 685

204 684 683 683 682 681 681 680 679 679 678

205 677 677 676 675 675 674 673 673 672 671

206 671 670 669 669 668 667 667 666 665 665

207 664 664 663 662 662 661 660 660 659 658

208 658 657 657 656 655 655 654 653 653 652

209 652 651 650 650 649 648 648 647 647 646

210 645 645 644 644 643 642 642 641 640 640

211 639 639 638 637 637 636 636 635 634 634

212 633 633 632 631 631 630 630 629 628 628

213 627 627 626 626 625 624 624 623 623 622

214 621 621 620 620 619 619 618 617 617 616

215 616 615 615 614 613 613 612 612 611 611

216 610 609 609 608 608 607 607 606 606 605

217 604 604 603 603 602 602 601 601 600 599

218 599 598 598 597 597 596 596 595 594 594

219 593 593 592 592 591 591 590 590 589 589

220 588 587 587 586 586 585 585 584 584 583

221 583 582 582 581 581 580 580 579 579 578

222 577 577 576 576 575 575 574 574 573 573

223 572 572 571 571 570 570 569 569 568 568

224 567 567 566 566 565 565 564 564 563 563

225 562 562 561 561 560 560 559 559 558 558

226 557 557 556 556 555 555 554 554 553 553

227 552 552 551 551 550 550 549 549 548 548

228 547 547 547 546 546 545 545 544 544 543

229 543 542 542 541 541 540 540 539 539 538

230 538 538 537 537 536 536 535 535 534 534

231 533 533 532 532 532 531 531 530 530 529

232 529 528 528 527 527 526 526 526 525 525

233 524 524 523 523 522 522 522 521 521 520

234 520 519 519 518 518 518 517 517 516 516

235 515 515 514 514 514 513 513 512 512 511

236 511 511 510 510 509 509 508 508 508 507

237 507 506 506 505 505 505 504 504 503 503

238 502 502 502 501 501 500 500 499 499 499

239 498 498 497 497 497 496 496 495 495 495

240 494 494 493 493 492 492 492 491 491 490

241 490 490 489 489 488 488 488 487 487 486

38

Page 42: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

242 486 486 485 485 484 484 484 483 483 482

243 482 482 481 481 480 480 480 479 479 478

244 478 478 477 477 476 476 476 475 475 475

245 474 474 473 473 473 472 472 471 471 471

246 470 470 470 469 469 468 468 468 467 467

247 466 466 466 465 465 465 464 464 463 463

248 463 462 462 462 461 461 461 460 460 459

249 459 459 458 458 458 457 457 456 456 456

250 455 455 455 454 454 454 453 453 452 452

251 452 451 451 451 450 450 450 449 449 449

252 448 448 447 447 447 446 446 446 445 445

253 445 444 444 444 443 443 443 442 442 441

254 441 441 440 440 440 439 439 439 438 438

255 438 437 437 437 436 436 436 435 435 435

256 434 434 434 433 433 433 432 432 432 431

257 431 431 430 430 430 429 429 429 428 428

258 428 427 427 427 426 426 426 425 425 425

259 424 424 424 423 423 423 422 422 422 421

260 421 421 420 420 420 419 419 419 418 418

261 418 417 417 417 417 416 416 416 415 415

262 415 414 414 414 413 413 413 412 412 412

263 411 411 411 411 410 410 410 409 409 409

264 408 408 408 407 407 407 406 406 406 406

265 405 405 405 404 404 404 403 403 403 403

266 402 402 402 401 401 401 400 400 400 400

267 399 399 399 398 398 398 397 397 397 397

268 396 396 396 395 395 395 394 394 394 394

269 393 393 393 392 392 392 392 391 391 391

270 390 390 390 390 389 389 389 388 388 388

271 388 387 387 387 386 386 386 386 385 385

272 385 384 384 384 384 383 383 383 382 382

273 382 382 381 381 381 380 380 380 380 379

274 379 379 379 378 378 378 377 377 377 377

275 376 376 376 376 375 375 375 374 374 374

276 374 373 373 373 373 372 372 372 371 371

277 371 371 370 370 370 370 369 369 369 369

278 368 368 368 367 367 367 367 366 366 366

279 366 365 365 365 365 364 364 364 364 363

280 363 363 362 362 362 362 361 361 361 361

281 360 360 360 360 359 359 359 359 358 358

282 358 358 357 357 357 357 356 356 356 356

283 355 355 355 355 354 354 354 354 353 353

284 353 353 352 352 352 352 351 351 351 351

285 350 350 350 350 349 349 349 349 348 348

286 348 348 347 347 347 347 346 346 346 346

39

Page 43: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

287 346 345 345 345 345 344 344 344 344 343

288 343 343 343 342 342 342 342 341 341 341

289 341 341 340 340 340 340 339 339 339 339

290 338 338 338 338 337 337 337 337 337 336

291 336 336 336 335 335 335 335 334 334 334

292 334 334 333 333 333 333 332 332 332 332

293 332 331 331 331 331 330 330 330 330 329

294 329 329 329 329 328 328 328 328 327 327

295 327 327 327 326 326 326 326 325 325 325

296 325 325 324 324 324 324 324 323 323 323

297 323 322 322 322 322 322 321 321 321 321

298 320 320 320 320 320 319 319 319 319 319

299 318 318 318 318 317 317 317 317 317 316

300 316 316 316 316 315 315 315 315 315 314

301 314 314 314 313 313 313 313 313 312 312

302 312 312 312 311 311 311 311 311 310 310

303 310 310 310 309 309 309 309 309 308 308

304 308 308 308 307 307 307 307 307 306 306

305 306 306 306 305 305 305 305 305 304 304

306 304 304 304 303 303 303 303 303 302 302

307 302 302 302 301 301 301 301 301 300 300

308 300 300 300 299 299 299 299 299 298 298

309 298 298 298 297 297 297 297 297 297 296

310 296 296 296 296 295 295 295 295 295 294

311 294 294 294 294 293 293 293 293 293 293

312 292 292 292 292 292 291 291 291 291 291

313 291 290 290 290 290 290 289 289 289 289

314 289 288 288 288 288 288 288 287 287 287

315 287 287 286 286 286 286 286 286 285 285

316 285 285 285 284 284 284 284 284 284 283

317 283 283 283 283 283 282 282 282 282 282

318 281 281 281 281 281 281 280 280 280 280

319 280 279 279 279 279 279 279 278 278 278

320 278 278 278 277 277 277 277 277 277 276

321 276 276 276 276 276 275 275 275 275 275

322 274 274 274 274 274 274 273 273 273 273

323 273 273 272 272 272 272 272 272 271 271

324 271 271 271 271 270 270 270 270 270 270

325 269 269 269 269 269 269 268 268 268 268

326 268 268 267 267 267 267 267 267 266 266

327 266 266 266 266 266 265 265 265 265 265

328 265 264 264 264 264 264 264 263 263 263

329 263 263 263 262 262 262 262 262 262 261

330 261 261 261 261 261 261 260 260 260 260

331 260 260 259 259 259 259 259 259 259 258

40

Page 44: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

332 258 258 258 258 258 257 257 257 257 257

333 257 256 256 256 256 256 256 256 255 255

334 255 255 255 255 255 254 254 254 254 254

335 254 253 253 253 253 253 253 253 252 252

336 252 252 252 252 251 251 251 251 251 251

337 251 250 250 250 250 250 250 250 249 249

338 249 249 249 249 249 248 248 248 248 248

339 248 248 247 247 247 247 247 247 246 246

340 246 246 246 246 246 245 245 245 245 245

341 245 245 244 244 244 244 244 244 244 243

342 243 243 243 243 243 243 242 242 242 242

343 242 242 242 241 241 241 241 241 241 241

344 241 240 240 240 240 240 240 240 239 239

345 239 239 239 239 239 238 238 238 238 238

346 238 238 237 237 237 237 237 237 237 236

347 236 236 236 236 236 236 236 235 235 235

348 235 235 235 235 234 234 234 234 234 234

349 234 234 233 233 233 233 233 233 233 232

350 232 232 232 232 232 232 232 231 231 231

351 231 231 231 231 230 230 230 230 230 230

352 230 230 229 229 229 229 229 229 229 229

353 228 228 228 228 228 228 228 227 227 227

354 227 227 227 227 227 226 226 226 226 226

355 226 226 226 225 225 225 225 225 225 225

356 225 224 224 224 224 224 224 224 224 223

357 223 223 223 223 223 223 223 222 222 222

358 222 222 222 222 222 221 221 221 221 221

359 221 221 221 220 220 220 220 220 220 220

360 220 219 219 219 219 219 219 219 219 219

361 218 218 218 218 218 218 218 218 217 217

362 217 217 217 217 217 217 216 216 216 216

363 216 216 216 216 216 215 215 215 215 215

364 215 215 215 214 214 214 214 214 214 214

365 214 214 213 213 213 213 213 213 213 213

366 212 212 212 212 212 212 212 212 212 211

367 211 211 211 211 211 211 211 210 210 210

368 210 210 210 210 210 210 209 209 209 209

369 209 209 209 209 209 208 208 208 208 208

370 208 208 208 208 207 207 207 207 207 207

371 207 207 207 206 206 206 206 206 206 206

372 206 206 205 205 205 205 205 205 205 205

373 205 204 204 204 204 204 204 204 204 204

374 203 203 203 203 203 203 203 203 203 202

375 202 202 202 202 202 202 202 202 202 201

376 201 201 201 201 201 201 201 201 200 200

41

Page 45: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

377 200 200 200 200 200 200 200 199 199 199

378 199 199 199 199 199 199 199 198 198 198

379 198 198 198 198 198 198 198 197 197 197

380 197 197 197 197 197 197 196 196 196 196

381 196 196 196 196 196 196 195 195 195 195

382 195 195 195 195 195 195 194 194 194 194

383 194 194 194 194 194 194 193 193 193 193

384 193 193 193 193 193 193 192 192 192 192

385 192 192 192 192 192 192 191 191 191 191

386 191 191 191 191 191 191 190 190 190 190

387 190 190 190 190 190 190 189 189 189 189

388 189 189 189 189 189 189 188 188 188 188

389 188 188 188 188 188 188 187 187 187 187

390 187 187 187 187 187 187 187 186 186 186

391 186 186 186 186 186 186 186 185 185 185

392 185 185 185 185 185 185 185 185 184 184

393 184 184 184 184 184 184 184 184 184 183

394 183 183 183 183 183 183 183 183 183 182

395 182 182 182 182 182 182 182 182 182 182

396 181 181 181 181 181 181 181 181 181 181

397 181 180 180 180 180 180 180 180 180 180

398 180 180 179 179 179 179 179 179 179 179

399 179 179 179 178 178 178 178 178 178 178

400 178 178 178 178 178 177 177 177 177 177

401 177 177 177 177 177 177 176 176 176 176

402 176 176 176 176 176 176 176 175 175 175

403 175 175 175 175 175 175 175 175 175 174

404 174 174 174 174 174 174 174 174 174 174

405 174 173 173 173 173 173 173 173 173 173

406 173 173 172 172 172 172 172 172 172 172

407 172 172 172 172 171 171 171 171 171 171

408 171 171 171 171 171 171 170 170 170 170

409 170 170 170 170 170 170 170 170 169 169

410 169 169 169 169 169 169 169 169 169 169

411 168 168 168 168 168 168 168 168 168 168

412 168 168 168 167 167 167 167 167 167 167

413 167 167 167 167 167 166 166 166 166 166

414 166 166 166 166 166 166 166 165 165 165

415 165 165 165 165 165 165 165 165 165 165

416 164 164 164 164 164 164 164 164 164 164

417 164 164 164 163 163 163 163 163 163 163

418 163 163 163 163 163 162 162 162 162 162

419 162 162 162 162 162 162 162 162 161 161

420 161 161 161 161 161 161 161 161 161 161

421 161 160 160 160 160 160 160 160 160 160

42

Page 46: Hardness Conversion Tables

L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

422 160 160 160 160 160 159 159 159 159 159

423 159 159 159 159 159 159 159 159 158 158

424 158 158 158 158 158 158 158 158 158 158

425 158 157 157 157 157 157 157 157 157 157

426 157 157 157 157 157 156 156 156 156 156

427 156 156 156 156 156 156 156 156 156 155

428 155 155 155 155 155 155 155 155 155 155

429 155 155 154 154 154 154 154 154 154 154

430 154 154 154 154 154 154 153 153 153 153

431 153 153 153 153 153 153 153 153 153 153

432 152 152 152 152 152 152 152 152 152 152

433 152 152 152 152 152 151 151 151 151 151

434 151 151 151 151 151 151 151 151 151 150

435 150 150 150 150 150 150 150 150 150 150

436 150 150 150 150 149 149 149 149 149 149

437 149 149 149 149 149 149 149 149 148 148

438 148 148 148 148 148 148 148 148 148 148

439 148 148 148 147 147 147 147 147 147 147

440 147 147 147 147 147 147 147 147 146 146

441 146 146 146 146 146 146 146 146 146 146

442 146 146 146 145 145 145 145 145 145 145

443 145 145 145 145 145 145 145 145 144 144

444 144 144 144 144 144 144 144 144 144 144

445 144 144 144 144 143 143 143 143 143 143

446 143 143 143 143 143 143 143 143 143 142

447 142 142 142 142 142 142 142 142 142 142

448 142 142 142 142 142 141 141 141 141 141

449 141 141 141 141 141 141 141 141 141 141

450 141 140 140 140 140 140 140 140 140 140

451 140 140 140 140 140 140 140 139 139 139

452 139 139 139 139 139 139 139 139 139 139

453 139 139 139 139 138 138 138 138 138 138

454 138 138 138 138 138 138 138 138 138 138

455 137 137 137 137 137 137 137 137 137 137

456 137 137 137 137 137 137 137 136 136 136

457 136 136 136 136 136 136 136 136 136 136

458 136 136 136 135 135 135 135 135 135 135

459 135 135 135 135 135 135 135 135 135 135

460 134 134 134 134 134 134 134 134 134 134

461 134 134 134 134 134 134 134 134 133 133

462 133 133 133 133 133 133 133 133 133 133

463 133 133 133 133 133 132 132 132 132 132

464 132 132 132 132 132 132 132 132 132 132

465 132 132 132 131 131 131 131 131 131 131

466 131 131 131 131 131 131 131 131 131 131

43

Page 47: Hardness Conversion Tables

L o a d 5 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

150 3162 3120 3080 3039 3000 2961 2924 2887 2850 2814

160 2779 2745 2711 2678 2645 2613 2582 2551 2521 2491

170 2462 2433 2405 2377 2350 2323 2297 2271 2246 2221

180 2196 2172 2148 2125 2102 2079 2057 2035 2013 1992

190 1971 1950 1930 1910 1890 1871 1852 1833 1815 1797

200 1779 1761 1744 1727 1710 1693 1677 1660 1645 1629

210 1613 1598 1583 1568 1554 1539 1525 1511 1497 1483

220 1470 1457 1444 1431 1418 1405 1393 1381 1369 1357

230 1345 1333 1322 1311 1299 1288 1277 1267 1256 1246

240 1235 1225 1215 1205 1195 1185 1176 1166 1157 1148

250 1138 1129 1120 1112 1103 1094 1086 1077 1069 1061

260 1053 1044 1037 1029 1021 1013 1006 998 991 983

270 976 969 962 955 948 941 934 927 921 914

280 908 901 895 888 882 876 870 864 858 852

290 846 840 834 829 823 818 812 807 801 796

300 791 785 780 775 770 765 760 755 750 745

310 740 736 731 726 722 717 713 708 704 699

320 695 691 686 682 678 674 669 665 661 657

330 653 649 646 642 638 634 630 626 623 619

340 615 612 608 605 601 598 594 591 588 584

350 581 578 574 571 568 565 561 558 555 552

360 549 546 543 540 537 534 531 528 525 523

370 520 517 514 511 509 506 503 501 498 495

380 493 490 488 485 483 480 478 475 473 470

390 468 465 463 461 458 456 454 451 449 447

400 445 442 440 438 436 434 432 430 427 425

410 423 421 419 417 415 413 411 409 407 405

420 403 401 400 398 396 394 392 390 388 387

430 385 383 381 379 378 376 374 373 371 369

440 368 366 364 363 361 359 358 356 355 353

450 351 350 348 347 345 344 342 341 339 338

460 336 335 333 332 330 329 328 326 325 323

470 322 321 319 318 317 315 314 313 311 310

480 309 308 306 305 304 302 301 300 299 298

490 296 295 294 293 292 290 289 288 287 286

500 285 283 282 281 280 279 278 277 276 275

510 274 272 271 270 269 268 267 266 265 264

520 263 262 261 260 259 258 257 256 255 254

530 253 252 251 250 250 249 248 247 246 245

540 244 243 242 241 240 240 239 238 237 236

550 235 234 234 233 232 231 230 229 229 228

560 227 226 225 224 224 223 222 221 221 220

570 219 218 217 217 216 215 214 214 213 212

580 212 211 210 209 209 208 207 206 206 205

590 204 204 203 202 202 201 200 200 199 198

44

Page 48: Hardness Conversion Tables

L o a d 5 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

600 198 197 196 196 195 194 194 193 192 192

610 191 191 190 189 189 188 188 187 186 186

620 185 184 184 183 183 182 182 181 180 180

630 179 179 178 178 177 176 176 175 175 174

640 174 173 173 172 172 171 170 170 169 169

650 168 168 167 167 166 166 165 165 164 164

660 163 163 162 162 161 161 160 160 159 159

670 158 158 158 157 157 156 156 155 155 154

680 154 153 153 153 152 152 151 151 150 150

690 149 149 149 148 148 147 147 146 146 146

700 145 145 144 144 144 143 143 142 142 142

710 141 141 140 140 140 139 139 138 138 138

720 137 137 136 136 136 135 135 135 134 134

730 134 133 133 132 132 132 131 131 131 130

740 130 130 129 129 129 128 128 128 127 127

750 126 126 126 125 125 125 124 124 124 124

760 123 123 123 122 122 122 121 121 121 120

770 120 120 119 119 119 118 118 118 118 117

780 117 117 116 116 116 115 115 115 115 114

790 114 114 113 113 113 113 112 112 112 111

800 111 111 111 110 110 110 110 109 109 109

810 108 108 108 108 107 107 107 107 106 106

820 106 106 105 105 105 105 104 104 104 104

830 103 103 103 103 102 102 102 102 101 101

840 101 101 100 100 99.9 99.6 99.4 99.2 98.9 98.7

850 98.5 98.2 98.0 97.8 97.6 97.3 97.1 96.9 96.6 96.4

860 96.2 96.0 95.8 95.5 95.3 95.1 94.9 94.7 94.4 94.2

870 94.0 93.8 93.6 93.4 93.1 92.9 92.7 92.5 92.3 92.1

880 91.9 91.7 91.5 91.3 91.0 90.8 90.6 90.4 90.2 90.0

890 89.8 89.6 89.4 89.2 89.0 88.8 88.6 88.4 88.2 88.0

900 87.8 87.6 87.5 87.3 87.1 86.9 86.7 86.5 86.3 86.1

910 85.9 85.7 85.5 85.4 85.2 85.0 84.8 84.6 84.4 84.2

920 84.1 83.9 83.7 83.5 83.3 83.2 83.0 82.8 82.6 82.4

930 82.3 82.1 81.9 81.7 81.6 81.4 81.2 81.0 80.9 80.7

940 80.5 80.4 80.2 80.0 79.8 79.7 79.5 79.3 79.2 79.0

950 78.8 78.7 78.5 78.3 78.2 78.0 77.9 77.7 77.5 77.4

960 77.2 77.0 76.9 76.7 76.6 76.4 76.2 76.1 75.9 75.8

970 75.6 75.5 75.3 75.2 75.0 74.8 74.7 74.5 74.4 74.2

980 74.1 73.9 73.8 73.6 73.5 73.3 73.2 73.0 72.9 72.7

990 72.6 72.4 72.3 72.2 72.0 71.9 71.7 71.6 71.4 71.3

45

Page 49: Hardness Conversion Tables

L o a d 1 0 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

210 3227 3196 3166 3137 3107 3078 3050 3022 2994 2967

220 2940 2914 2887 2862 2836 2811 2786 2762 2737 2714

230 2690 2667 2644 2621 2599 2577 2555 2533 2512 2491

240 2470 2450 2430 2410 2390 2371 2351 2332 2314 2295

250 2277 2259 2241 2223 2206 2188 2171 2154 2138 2121

260 2105 2089 2073 2057 2042 2026 2011 1996 1981 1967

270 1952 1938 1923 1909 1895 1882 1868 1855 1841 1828

280 1815 1802 1789 1777 1764 1752 1740 1728 1716 1704

290 1692 1680 1669 1658 1646 1635 1624 1613 1602 1592

300 1581 1571 1560 1550 1540 1530 1520 1510 1500 1490

310 1481 1471 1462 1453 1443 1434 1425 1416 1407 1398

320 1390 1381 1372 1364 1356 1347 1339 1331 1323 1315

330 1307 1299 1291 1283 1276 1268 1260 1253 1246 1238

340 1231 1224 1217 1210 1203 1196 1189 1182 1175 1168

350 1162 1155 1148 1142 1136 1129 1123 1117 1110 1104

360 1098 1092 1086 1080 1074 1068 1062 1057 1051 1045

370 1039 1034 1028 1023 1017 1012 1007 1001 996 991

380 985 980 975 970 965 960 955 950 945 940

390 936 931 926 921 917 912 907 903 898 894

400 889 885 881 876 872 868 863 859 855 851

410 847 842 838 834 830 826 822 818 814 811

420 807 803 799 795 792 788 784 780 777 773

430 770 766 762 759 755 752 749 745 742 738

440 735 732 728 725 722 719 715 712 709 706

450 703 700 697 693 690 687 684 681 678 675

460 672 670 667 664 661 658 655 652 650 647

470 644 641 639 636 633 631 628 625 623 620

480 618 615 613 610 607 605 602 600 598 595

490 593 590 588 585 583 581 578 576 574 571

500 569 567 565 562 560 558 556 554 551 549

510 547 545 543 541 539 537 534 532 530 528

520 526 524 522 520 518 516 514 512 510 509

530 507 505 503 501 499 497 495 493 492 490

540 488 486 484 483 481 479 477 476 474 472

550 470 469 467 465 464 462 460 459 457 455

560 454 452 451 449 447 446 444 443 441 440

570 438 436 435 433 432 430 429 427 426 424

580 423 422 420 419 417 416 414 413 412 410

590 409 407 406 405 403 402 401 399 398 397

600 395 394 393 391 390 389 387 386 385 384

610 382 381 380 379 377 376 375 374 373 371

620 370 369 368 367 365 364 363 362 361 360

630 359 357 356 355 354 353 352 351 350 349

640 347 346 345 344 343 342 341 340 339 338

650 337 336 335 334 333 332 331 330 329 328

46

Page 50: Hardness Conversion Tables

L o a d 1 0 k g f

660 327 326 325 324 323 322 321 320 319 318

670 317 316 315 314 313 312 311 310 310 309

680 308 307 306 305 304 303 302 302 301 300

690 299 298 297 296 295 295 294 293 292 291

700 290 290 289 288 287 286 285 285 284 283

710 282 281 281 280 279 278 278 277 276 275

720 274 274 273 272 271 271 270 269 268 268

730 267 266 266 265 264 263 263 262 261 261

740 260 259 258 258 257 256 256 255 254 254

750 253 252 252 251 250 250 249 248 248 247

760 246 246 245 244 244 243 243 242 241 241

770 240 239 239 238 238 237 236 236 235 234

780 234 233 233 232 232 231 230 230 229 229

790 228 227 227 226 226 225 225 224 223 223

800 222 222 221 221 220 220 219 219 218 217

810 217 216 216 215 215 214 214 213 213 212

820 212 211 211 210 210 209 209 208 208 207

830 207 206 206 205 205 204 204 203 203 202

840 202 201 201 200 200 199 199 198 198 197

850 197 196 196 196 195 195 194 194 193 193

860 192 192 192 191 191 190 190 189 189 188

870 188 188 187 187 186 186 185 185 185 184

880 184 183 183 183 182 182 181 181 180 180

890 180 179 179 178 178 178 177 177 176 176

900 176 175 175 175 174 174 173 173 173 172

910 172 171 171 171 170 170 170 169 169 168

920 168 168 167 167 167 166 166 166 165 165

930 165 164 164 163 163 163 162 162 162 161

940 161 161 160 160 160 159 159 159 158 158

950 158 157 157 157 156 156 156 155 155 155

960 154 154 154 153 153 153 152 152 152 152

970 151 151 151 150 150 150 149 149 149 148

980 148 148 148 147 147 147 146 146 146 145

990 145 145 145 144 144 144 143 143 143 143

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

47

Page 51: Hardness Conversion Tables

L o a d 2 0 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

290 3384 3361 3338 3315 3293 3270 3248 3226 3205 3183

300 3162 3141 3120 3100 3080 3059 3039 3020 3000 2981

310 2961 2942 2924 2905 2887 2868 2850 2832 2814 2797

320 2779 2762 2745 2728 2711 2694 2678 2662 2645 2629

330 2613 2598 2582 2567 2551 2536 2521 2506 2491 2476

340 2462 2448 2433 2419 2405 2391 2377 2364 2350 2337

350 2323 2310 2297 2284 2271 2258 2246 2233 2221 2208

360 2196 2184 2172 2160 2148 2136 2125 2113 2102 2090

370 2079 2068 2057 2046 2035 2024 2013 2002 1992 1981

380 1971 1961 1950 1940 1930 1920 1910 1900 1890 1881

390 1871 1862 1852 1843 1833 1824 1815 1806 1797 1788

400 1779 1770 1761 1752 1744 1735 1727 1718 1710 1701

410 1693 1685 1677 1669 1660 1652 1645 1637 1629 1621

420 1613 1606 1598 1591 1583 1576 1568 1561 1554 1546

430 1539 1532 1525 1518 1511 1504 1497 1490 1483 1477

440 1470 1463 1457 1450 1444 1437 1431 1424 1418 1412

450 1405 1399 1393 1387 1381 1375 1369 1363 1357 1351

460 1345 1339 1333 1328 1322 1316 1311 1305 1299 1294

470 1288 1283 1277 1272 1267 1261 1256 1251 1246 1240

480 1235 1230 1225 1220 1215 1210 1205 1200 1195 1190

490 1185 1181 1176 1171 1166 1162 1157 1152 1148 1143

500 1138 1134 1129 1125 1120 1116 1112 1107 1103 1098

510 1094 1090 1086 1081 1077 1073 1069 1065 1061 1057

520 1053 1048 1044 1040 1037 1033 1029 1025 1021 1017

530 1013 1009 1006 1002 998 994 991 987 983 980

540 976 972 969 965 962 958 955 951 948 944

550 941 937 934 931 927 924 921 917 914 911

560 908 904 901 898 895 892 888 885 882 879

570 876 873 870 867 864 861 858 855 852 849

580 846 843 840 837 834 832 829 826 823 820

590 818 815 812 809 807 804 801 799 796 793

600 791 788 785 783 780 778 775 772 770 767

610 765 762 760 757 755 752 750 748 745 743

620 740 738 736 733 731 729 726 724 722 719

630 717 715 713 710 708 706 704 701 699 697

640 695 693 691 688 686 684 682 680 678 676

650 674 672 669 667 665 663 661 659 657 655

660 653 651 649 647 646 644 642 640 638 636

670 634 632 630 628 626 625 623 621 619 617

680 615 614 612 610 608 607 605 603 601 600

690 598 596 594 593 591 589 588 586 584 582

700 581 579 578 576 574 573 571 569 568 566

710 565 563 561 560 558 557 555 554 552 551

720 549 547 546 544 543 541 540 538 537 536

730 534 533 531 530 528 527 525 524 523 521

48

Page 52: Hardness Conversion Tables

L o a d 2 0 k g f

740 520 518 517 516 514 513 511 510 509 507

750 506 505 503 502 501 499 498 497 495 494

760 493 491 490 489 488 486 485 484 483 481

770 480 479 478 476 475 474 473 471 470 469

780 468 467 465 464 463 462 461 459 458 457

790 456 455 454 453 451 450 449 448 447 446

800 445 444 442 441 440 439 438 437 436 435

810 434 433 432 431 430 428 427 426 425 424

820 423 422 421 420 419 418 417 416 415 414

830 413 412 411 410 409 408 407 406 405 404

840 403 402 401 400 400 399 398 397 396 395

850 394 393 392 391 390 389 388 388 387 386

860 385 384 383 382 381 380 379 379 378 377

870 376 375 374 373 373 372 371 370 369 368

880 368 367 366 365 364 363 363 362 361 360

890 359 358 358 357 356 355 355 354 353 352

900 351 351 350 349 348 347 347 346 345 344

910 344 343 342 341 341 340 339 338 338 337

920 336 336 335 334 333 333 332 331 330 330

930 329 328 328 327 326 326 325 324 323 323

940 322 321 321 320 319 319 318 317 317 316

950 315 315 314 313 313 312 311 311 310 309

960 309 308 308 307 306 306 305 304 304 303

970 302 302 301 301 300 299 299 298 298 297

980 296 296 295 295 294 293 293 292 292 291

990 290 290 289 289 288 287 287 286 286 285

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

49

Page 53: Hardness Conversion Tables

L o a d 3 0 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

360 3294 3276 3258 3240 3222 3204 3187 3170 3152 3135

370 3118 3102 3085 3068 3052 3036 3020 3004 2988 2972

380 2956 2941 2925 2910 2895 2880 2865 2850 2836 2821

390 2807 2792 2778 2764 2750 2736 2722 2709 2695 2682

400 2668 2655 2642 2629 2616 2603 2590 2577 2565 2552

410 2540 2527 2515 2503 2491 2479 2467 2455 2443 2432

420 2420 2409 2397 2386 2375 2363 2352 2341 2330 2320

430 2309 2298 2287 2277 2266 2256 2246 2235 2225 2215

440 2205 2195 2185 2175 2166 2156 2146 2137 2127 2118

450 2108 2099 2090 2080 2071 2062 2053 2044 2035 2026

460 2017 2009 2000 1991 1983 1974 1966 1957 1949 1941

470 1933 1924 1916 1908 1900 1892 1884 1876 1868 1861

480 1853 1845 1838 1830 1822 1815 1807 1800 1793 1785

490 1778 1771 1764 1756 1749 1742 1735 1728 1721 1714

500 1708 1701 1694 1687 1681 1674 1667 1661 1654 1648

510 1641 1635 1628 1622 1616 1610 1603 1597 1591 1585

520 1579 1573 1567 1561 1555 1549 1543 1537 1531 1526

530 1520 1514 1508 1503 1497 1491 1486 1480 1475 1469

540 1464 1459 1453 1448 1443 1437 1432 1427 1422 1416

550 1411 1406 1401 1396 1391 1386 1381 1376 1371 1366

560 1361 1356 1352 1347 1342 1337 1333 1328 1323 1319

570 1314 1309 1305 1300 1296 1291 1287 1282 1278 1273

580 1269 1265 1260 1256 1252 1247 1243 1239 1235 1231

590 1226 1222 1218 1214 1210 1206 1202 1198 1194 1190

600 1186 1182 1178 1174 1170 1166 1162 1159 1155 1151

610 1147 1144 1140 1136 1132 1129 1125 1121 1118 1114

620 1111 1107 1103 1100 1096 1093 1089 1086 1082 1079

630 1076 1072 1069 1065 1062 1059 1055 1052 1049 1046

640 1042 1039 1036 1033 1029 1026 1023 1020 1017 1014

650 1010 1007 1004 1001 998 995 992 989 986 983

660 980 977 974 971 968 965 962 960 957 954

670 951 948 945 943 940 937 934 931 929 926

680 923 921 918 915 912 910 907 905 902 899

690 897 894 891 889 886 884 881 879 876 874

700 871 869 866 864 861 859 856 854 852 849

710 847 844 842 840 837 835 833 830 828 826

720 823 821 819 817 814 812 810 808 805 803

730 801 799 797 795 792 790 788 786 784 782

740 780 777 775 773 771 769 767 765 763 761

750 759 757 755 753 751 749 747 745 743 741

760 739 737 735 733 731 729 728 726 724 722

770 720 718 716 714 713 711 709 707 705 703

780 702 700 698 696 695 693 691 689 688 686

790 684 682 681 679 677 675 674 672 670 669

800 667 665 664 662 660 659 657 656 654 652

50

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L o a d 3 0 k g f

810 651 649 647 646 644 643 641 640 638 636

820 635 633 632 630 629 627 626 624 623 621

830 620 618 617 615 614 612 611 609 608 606

840 605 604 602 601 599 598 596 595 594 592

850 591 589 588 587 585 584 583 581 580 579

860 577 576 575 573 572 571 569 568 567 565

870 564 563 561 560 559 558 556 555 554 553

880 551 550 549 548 546 545 544 543 541 540

890 539 538 537 535 534 533 532 531 529 528

900 527 526 525 524 522 521 520 519 518 517

910 516 514 513 512 511 510 509 508 507 505

920 504 503 502 501 500 499 498 497 496 495

930 494 493 491 490 489 488 487 486 485 484

940 483 482 481 480 479 478 477 476 475 474

950 473 472 471 470 469 468 467 466 465 464

960 463 462 461 460 459 458 457 457 456 455

970 454 453 452 451 450 449 448 447 446 445

980 445 444 443 442 441 440 439 438 437 436

990 436 435 434 433 432 431 430 429 429 428

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

51

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L o a d 5 0 k g f

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

460 3362 3348 3333 3319 3305 3291 3276 3262 3249 3235

470 3221 3207 3194 3180 3167 3153 3140 3127 3114 3101

480 3088 3075 3063 3050 3037 3025 3012 3000 2988 2975

490 2963 2951 2939 2927 2916 2904 2892 2880 2869 2857

500 2846 2835 2823 2812 2801 2790 2779 2768 2757 2746

510 2735 2725 2714 2704 2693 2683 2672 2662 2652 2641

520 2631 2621 2611 2601 2591 2581 2572 2562 2552 2543

530 2533 2523 2514 2504 2495 2486 2477 2467 2458 2449

540 2440 2431 2422 2413 2404 2395 2387 2378 2369 2361

550 2352 2344 2335 2327 2318 2310 2302 2293 2285 2277

560 2269 2261 2253 2245 2237 2229 2221 2213 2205 2198

570 2190 2182 2175 2167 2159 2152 2145 2137 2130 2122

580 2115 2108 2101 2093 2086 2079 2072 2065 2058 2051

590 2044 2037 2030 2023 2017 2010 2003 1996 1990 1983

600 1976 1970 1963 1957 1950 1944 1937 1931 1925 1918

610 1912 1906 1900 1893 1887 1881 1875 1869 1863 1857

620 1851 1845 1839 1833 1827 1821 1816 1810 1804 1798

630 1793 1787 1781 1776 1770 1765 1759 1753 1748 1743

640 1737 1732 1726 1721 1716 1710 1705 1700 1694 1689

650 1684 1679 1674 1669 1663 1658 1653 1648 1643 1638

660 1633 1628 1624 1619 1614 1609 1604 1599 1594 1590

670 1585 1580 1576 1571 1566 1562 1557 1552 1548 1543

680 1539 1534 1530 1525 1521 1516 1512 1508 1503 1499

690 1494 1490 1486 1482 1477 1473 1469 1465 1460 1456

700 1452 1448 1444 1440 1436 1432 1427 1423 1419 1415

710 1411 1407 1404 1400 1396 1392 1388 1384 1380 1376

720 1372 1369 1365 1361 1357 1354 1350 1346 1342 1339

730 1335 1331 1328 1324 1321 1317 1313 1310 1306 1303

740 1299 1296 1292 1289 1285 1282 1278 1275 1272 1268

750 1265 1262 1258 1255 1252 1248 1245 1242 1238 1235

760 1232 1229 1225 1222 1219 1216 1213 1209 1206 1203

770 1200 1197 1194 1191 1188 1185 1182 1179 1175 1172

780 1169 1166 1163 1161 1158 1155 1152 1149 1146 1143

790 1140 1137 1134 1131 1129 1126 1123 1120 1117 1115

800 1112 1109 1106 1103 1101 1098 1095 1093 1090 1087

810 1084 1082 1079 1076 1074 1071 1069 1066 1063 1061

820 1058 1056 1053 1050 1048 1045 1043 1040 1038 1035

830 1033 1030 1028 1025 1023 1020 1018 1016 1013 1011

840 1008 1006 1004 1001 999 996 994 992 989 987

850 985 982 980 978 976 973 971 969 966 964

860 962 960 958 955 953 951 949 947 944 942

870 940 938 936 934 931 929 927 925 923 921

880 919 917 915 913 910 908 906 904 902 900

890 898 896 894 892 890 888 886 884 882 880

900 878 876 875 873 871 869 867 865 863 861

52

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L o a d 5 0 k g f

910 859 857 855 854 852 850 848 846 844 842

920 841 839 837 835 833 832 830 828 826 824

930 823 821 819 817 816 814 812 810 809 807

940 805 804 802 800 798 797 795 793 792 790

950 788 787 785 783 782 780 779 777 775 774

960 772 770 769 767 766 764 762 761 759 758

970 756 755 753 752 750 748 747 745 744 742

980 741 739 738 736 735 733 732 730 729 727

990 726 724 723 722 720 719 717 716 714 713

Diagonal Knoop Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

53

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DefinitionVickers Hardness: The value calculated according to the following formula from the test load at the time when the test surface isindented and the surface area obtained from the lengths of diagonals of the indentation by use of diamond indenter in the formof a right pyramid with a square base having the angle between the opposite face of 136°

where HK : Vickers hardnessF : test load (N)S : surface area of indentation ( mm2)d : mean value of the diagonals of the indentation (mm)Ø: angle between the opposite faces at the vertex of diamond indenter

The numerical value of HV is not attached with unit.

Note: In the case where the unit of test load F is kgf, Vickers hardness shall be calculated according to the following formula:

V i c k e r s H a r d n e s s T a b l e

HV=0.102 FS

=0.102 2Fsind2

=0.1891 Fd2

HV = FS

Fd2

= 1.854 x . . . . f: kgf, d: mm)

Fd2

= 1.854 x 106 x . . . . f: gf, d:µm)

Fd2

= 1.854 x 106 x . . . . f: kgf, d:µm)

Ø2

2Fsind2

Ø2=

Page 58: Hardness Conversion Tables

Table of Contents

Load 5 gf (0.005kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Load 10 gf (0.01kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Load 25 gf (0.025kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Load 50gf (0.05kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Load 100gf (0.1kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Load 200gf (0.2kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Load 300gf (0.3kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Load 500gf (0.5kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Load 1000gf (1kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Load 2000gf (2 kgf ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Load 5kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Load 10kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Load 20kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Load 30kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Load 50kgf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

V i c k e r s H a r d n e s s T a b l e

Page 59: Hardness Conversion Tables

L o a d 5 g f ( 0 . 0 0 5 k g f )

2 2318 2102 1915 1752 1609 1483 1371 1272 1182 1102

3 1030 965 905 851 802 757 715 677 642 609

4 579 551 526 501 479 458 438 420 402 386

5 371 356 343 330 318 306 296 285 276 266

6 258 249 241 234 226 219 213 207 200 195

7 189 184 179 174 169 165 160 156 152 149

8 145 141 138 135 131 128 125 122 120 117

9 114 112 110 107 105 103 101 98.5 96.5 94.6

10 92.7 90.9 89.1 87.4 85.7 84.1 82.5 81.0 79.5 78.0

11 76.6 75.2 73.9 72.6 71.3 70.1 68.9 67.7 66.6 65.5

12 64.4 63.3 62.3 61.3 60.3 59.3 58.4 57.5 56.6 55.7

13 54.9 54.0 53.2 52.4 51.6 50.9 50.1 49.4 48.7 48.0

14 47.3 46.6 46.0 45.3 44.7 44.1 43.5 42.9 42.3 41.8

15 41.2 40.7 40.1 39.6 39.1 38.6 38.1 37.6 37.1 36.7

16 36.2 35.8 35.3 34.9 34.5 34.0 33.6 33.2 32.8 32.5

17 32.1 31.7 31.3 31.0 30.6 30.3 29.9 29.6 29.3 28.9

18 28.6 28.3 28.0 27.7 27.4 27.1 26.8 26.5 26.2 26.0

19 25.7 25.4 25.1 24.9 24.6 24.4 24.1 23.9 23.6 23.4

20 23.2 22.9 22.7 22.5 22.3 22.1 21.8 21.6 21.4 21.2

21 21.0 20.8 20.6 20.4 20.2 20.1 19.9 19.7 19.5 19.3

22 19.2 19.0 18.8 18.6 18.5 18.3 18.1 18.0 17.8 17.7

23 17.5 17.4 17.2 17.1 16.9 16.8 16.6 16.5 16.4 16.2

24 16.1 16.0 15.8 15.7 15.6 15.4 15.3 15.2 15.1 15.0

25 14.8 14.7 14.6 14.5 14.4 14.3 14.1 14.0 13.9 13.8

26 13.7 13.6 13.5 13.4 13.3 13.2 13.1 13.0 12.9 12.8

27 12.7 12.6 12.5 12.4 12.3 12.3 12.2 12.1 12.0 11.9

28 11.8 11.7 11.7 11.6 11.5 11.4 11.3 11.3 11.2 11.1

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

1

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L o a d 1 0 g f ( 0 . 0 1 k g f )

3 2060 1929 1811 1702 1604 1513 1431 1354 1284 1219

4 1159 1103 1051 1003 958 916 876 839 805 772

5 742 713 686 660 636 613 591 571 551 533

6 515 498 482 467 453 439 426 413 401 389

7 378 368 358 348 339 330 321 313 305 297

8 290 283 276 269 263 257 251 245 239 234

9 229 224 219 214 210 205 201 197 193 189

10 185 182 178 175 171 168 165 162 159 156

11 153 150 148 145 143 140 138 135 133 131

12 129 127 125 123 121 119 117 115 113 111

13 110 108 106 105 103 102 100 98.8 97.4 96.0

14 94.6 93.3 91.9 90.7 89.4 88.2 87.0 85.8 84.6 83.5

15 82.4 81.3 80.2 79.2 78.2 77.2 76.2 75.2 74.3 73.3

16 72.4 71.5 70.6 69.8 68.9 68.1 67.3 66.5 65.7 64.9

17 64.2 63.4 62.7 61.9 61.2 60.5 59.9 59.2 58.5 57.9

18 57.2 56.6 56.0 55.4 54.8 54.2 53.6 53.0 52.5 51.9

19 51.4 50.8 50.3 49.8 49.3 48.8 48.3 47.8 47.3 46.8

20 46.4 45.9 45.4 45.0 44.6 44.1 43.7 43.3 42.9 42.4

21 42.0 41.6 41.3 40.9 40.5 40.1 39.7 39.4 39.0 38.7

22 38.3 38.0 37.6 37.3 36.9 36.6 36.3 36.0 35.7 35.4

23 35.0 34.7 34.4 34.2 33.9 33.6 33.3 33.0 32.7 32.5

24 32.2 31.9 31.7 31.4 31.1 30.9 30.6 30.4 30.1 29.9

25 29.7 29.4 29.2 29.0 28.7 28.5 28.3 28.1 27.9 27.6

26 27.4 27.2 27.0 26.8 26.6 26.4 26.2 26.0 25.8 25.6

27 25.4 25.2 25.1 24.9 24.7 24.5 24.3 24.2 24.0 23.8

28 23.6 23.5 23.3 23.1 23.0 22.8 22.7 22.5 22.4 22.2

29 22.0 21.9 21.7 21.6 21.4 21.3 21.2 21.0 20.9 20.7

30 20.6 20.5 20.3 20.2 20.1 19.9 19.8 19.7 19.5 19.4

31 19.3 19.2 19.0 18.9 18.8 18.7 18.6 18.4 18.3 18.2

32 18.1 18.0 17.9 17.8 17.7 17.6 17.4 17.3 17.2 17.1

33 17.0 16.9 16.8 16.7 16.6 16.5 16.4 16.3 16.2 16.1

34 16.0 15.9 15.9 15.8 15.7 15.6 15.5 15.4 15.3 15.2

35 15.1 15.0 15.0 14.9 14.8 14.7 14.6 14.5 14.5 14.4

36 14.3 14.2 14.1 14.1 14.0 13.9 13.8 13.8 13.7 13.6

37 13.5 13.5 13.4 13.3 13.3 13.2 13.1 13.0 13.0 12.9

38 12.8 12.8 12.7 12.6 12.6 12.5 12.4 12.4 12.3 12.3

39 12.2 12.1 12.1 12.0 11.9 11.9 11.8 11.8 11.7 11.6

40 11.6 11.5 11.5 11.4 11.4 11.3 11.2 11.2 11.1 11.1

41 11.0 11.0 10.9 10.9 10.8 10.8 10.7 10.7 10.6 10.6

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

2

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L o a d 2 5 g f ( 0 . 0 2 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

5 1854 1782 1714 1650 1590 1532 1478 1427 1378 1332

6 1288 1246 1206 1168 1132 1097 1064 1033 1002 974

7 946 919 894 870 846 824 802 782 762 743

8 724 706 689 673 657 642 627 612 599 585

9 572 560 548 536 525 514 503 493 483 473

10 464 454 446 437 429 420 413 405 397 390

11 383 376 369 363 357 350 344 339 333 327

12 322 317 311 306 301 297 292 287 283 279

13 274 270 266 262 258 254 251 247 243 240

14 236 233 230 227 224 220 217 214 212 209

15 206 203 201 198 195 193 190 188 186 183

16 181 179 177 174 172 170 168 166 164 162

17 160 159 157 155 153 151 150 148 146 145

18 143 141 140 138 137 135 134 133 131 130

19 128 127 126 124 123 122 121 119 118 117

20 116 115 114 112 111 110 109 108 107 106

21 105 104 103 102 101 100 99.3 98.4 97.5 96.6

22 95.8 94.9 94.0 93.2 92.4 91.6 90.7 89.9 89.2 88.4

23 87.6 86.9 86.1 85.4 84.6 83.9 83.2 82.5 81.8 81.1

24 80.5 79.8 79.1 78.5 77.9 77.2 76.6 76.0 75.4 74.8

25 74.2 73.6 73.0 72.4 71.8 71.3 70.7 70.2 69.6 69.1

26 68.6 68.0 67.5 67.0 66.5 66.0 65.5 65.0 64.5 64.1

27 63.6 63.1 62.6 62.2 61.7 61.3 60.8 60.4 60.0 59.5

28 59.1 58.7 58.3 57.9 57.5 57.1 56.7 56.3 55.9 55.5

29 55.1 54.7 54.4 54.0 53.6 53.3 52.9 52.5 52.2 51.8

30 51.5 51.2 50.8 50.5 50.2 49.8 49.5 49.2 48.9 48.5

31 48.2 47.9 47.6 47.3 47.0 46.7 46.4 46.1 45.8 45.5

32 45.3 45.0 44.7 44.4 44.2 43.9 43.6 43.3 43.1 42.8

33 42.6 42.3 42.1 41.8 41.5 41.3 41.1 40.8 40.6 40.3

34 40.1 39.9 39.6 39.4 39.2 38.9 38.7 38.5 38.3 38.1

35 37.8 37.6 37.4 37.2 37.0 36.8 36.6 36.4 36.2 36.0

36 35.8 35.6 35.4 35.2 35.0 34.8 34.6 34.4 34.2 34.0

37 33.9 33.7 33.5 33.3 33.1 33.0 32.8 32.6 32.4 32.3

38 32.1 31.9 31.8 31.6 31.4 31.3 31.1 30.9 30.8 30.6

39 30.5 30.3 30.2 30.0 29.9 29.7 29.6 29.4 29.3 29.1

40 29.0 28.8 28.7 28.5 28.4 28.3 28.1 28.0 27.8 27.7

41 27.6 27.4 27.3 27.2 27.0 26.9 26.8 26.7 26.5 26.4

42 26.3 26.2 26.0 25.9 25.8 25.7 25.5 25.4 25.3 25.2

43 25.1 25.0 24.8 24.7 24.6 24.5 24.4 24.3 24.2 24.1

44 23.9 23.8 23.7 23.6 23.5 23.4 23.3 23.2 23.1 23.0

45 22.9 22.8 22.7 22.6 22.5 22.4 22.3 22.2 22.1 22.0

46 21.9 21.8 21.7 21.6 21.5 21.4 21.3 21.3 21.2 21.1

47 21.0 20.9 20.8 20.7 20.6 20.5 20.5 20.4 20.3 20.2

48 20.1 20.0 20.0 19.9 19.8 19.7 19.6 19.5 19.5 19.4

49 19.3 19.2 19.1 19.1 19.0 18.9 18.8 18.8 18.7 18.6

3

Page 62: Hardness Conversion Tables

L o a d 5 0 g f ( 0 . 0 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

7 1892 1839 1788 1740 1693 1648 1605 1564 1524 1485

8 1448 1413 1379 1346 1314 1283 1253 1225 1197 1170

9 1144 1119 1095 1072 1049 1027 1006 985 965 946

10 927 909 891 874 857 841 825 810 795 780

11 766 752 739 726 713 701 689 677 666 655

12 644 633 623 613 603 593 584 575 566 557

13 549 540 532 524 516 509 501 494 487 480

14 473 466 460 453 447 441 435 429 423 418

15 412 407 401 396 391 386 381 376 371 367

16 362 358 353 349 345 340 336 332 328 325

17 321 317 313 310 306 303 299 296 293 289

18 286 283 280 277 274 271 268 265 262 260

19 257 254 251 249 246 244 241 239 236 234

20 232 229 227 225 223 221 218 216 214 212

21 210 208 206 204 202 201 199 197 195 193

22 192 190 188 186 185 183 181 180 178 177

23 175 174 172 171 169 168 166 165 164 162

24 161 160 158 157 156 154 153 152 151 150

25 148 147 146 145 144 143 141 140 139 138

26 137 136 135 134 133 132 131 130 129 128

27 127 126 125 124 123 123 122 121 120 119

28 118 117 117 116 115 114 113 113 112 111

29 110 109 109 108 107 107 106 105 104 104

30 103 102 102 101 100 99.7 99.0 98.4 97.7 97.1

31 96.5 95.8 95.2 94.6 94.0 93.4 92.8 92.2 91.7 91.1

32 90.5 90.0 89.4 88.9 88.3 87.8 87.2 86.7 86.2 85.6

33 85.1 84.6 84.1 83.6 83.1 82.6 82.1 81.6 81.1 80.7

34 80.2 79.7 79.3 78.8 78.3 77.9 77.4 77.0 76.5 76.1

35 75.7 75.2 74.8 74.4 74.0 73.6 73.1 72.7 72.3 71.9

36 71.5 71.1 70.7 70.4 70.0 69.6 69.2 68.8 68.5 68.1

37 67.7 67.3 67.0 66.6 66.3 65.9 65.6 65.2 64.9 64.5

38 64.2 63.9 63.5 63.2 62.9 62.5 62.2 61.9 61.6 61.3

39 60.9 60.6 60.3 60.0 59.7 59.4 59.1 58.8 58.5 58.2

40 57.9 57.6 57.4 57.1 56.8 56.5 56.2 56.0 55.7 55.4

41 55.1 54.9 54.6 54.3 54.1 53.8 53.6 53.3 53.1 52.8

42 52.6 52.3 52.1 51.8 51.6 51.3 51.1 50.8 50.6 50.4

43 50.1 49.9 49.7 49.4 49.2 49.0 48.8 48.5 48.3 48.1

44 47.9 47.7 47.4 47.2 47.0 46.8 46.6 46.4 46.2 46.0

45 45.8 45.6 45.4 45.2 45.0 44.8 44.6 44.4 44.2 44.0

46 43.8 43.6 43.4 43.2 43.1 42.9 42.7 42.5 42.3 42.1

47 42.0 41.8 41.6 41.4 41.3 41.1 40.9 40.7 40.6 40.4

48 40.2 40.1 39.9 39.7 39.6 39.4 39.2 39.1 38.9 38.8

49 38.6 38.5 38.3 38.1 38.0 37.8 37.7 37.5 37.4 37.2

50 37.1 36.9 36.8 36.6 36.5 36.3 36.2 36.1 35.9 35.8

51 35.6 35.5 35.4 35.2 35.1 35.0 34.8 34.7 34.5 34.4

4

Page 63: Hardness Conversion Tables

L o a d 5 0 g f ( 0 . 0 5 k g f )

52 34.3 34.2 34.0 33.9 33.8 33.6 33.5 33.4 33.3 33.1

53 33.0 32.9 32.8 32.6 32.5 32.4 32.3 32.1 32.0 31.9

54 31.8 31.7 31.6 31.4 31.3 31.2 31.1 31.0 30.9 30.8

55 30.6 30.5 30.4 30.3 30.2 30.1 30.0 29.9 29.8 29.7

56 29.6 29.5 29.3 29.2 29.1 29.0 28.9 28.8 28.7 28.6

57 28.5 28.4 28.3 28.2 28.1 28.0 27.9 27.8 27.7 27.7

58 27.6 27.5 27.4 27.3 27.2 27.1 27.0 26.9 26.8 26.7

59 26.6 26.5 26.5 26.4 26.3 26.2 26.1 26.0 25.9 25.8

60 25.8 25.7 25.6 25.5 25.4 25.3 25.2 25.2 25.1 25.0

61 24.9 24.8 24.8 24.7 24.6 24.5 24.4 24.4 24.3 24.2

62 24.1 24.0 24.0 23.9 23.8 23.7 23.7 23.6 23.5 23.4

63 23.4 23.3 23.2 23.1 23.1 23.0 22.9 22.8 22.8 22.7

64 22.6 22.6 22.5 22.4 22.4 22.3 22.2 22.1 22.1 22.0

65 21.9 21.9 21.8 21.7 21.7 21.6 21.5 21.5 21.4 21.3

66 21.3 21.2 21.2 21.1 21.0 21.0 20.9 20.8 20.8 20.7

67 20.7 20.6 20.5 20.5 20.4 20.3 20.3 20.2 20.2 20.1

68 20.0 20.0 19.9 19.9 19.8 19.8 19.7 19.6 19.6 19.5

69 19.5 19.4 19.4 19.3 19.2 19.2 19.1 19.1 19.0 19.0

70 18.9 18.9 18.8 18.8 18.7 18.7 18.6 18.5 18.5 18.4

71 18.4 18.3 18.3 18.2 18.2 18.1 18.1 18.0 18.0 17.9

72 17.9 17.8 17.8 17.7 17.7 17.6 17.6 17.5 17.5 17.4

73 17.4 17.3 17.3 17.3 17.2 17.2 17.1 17.1 17.0 17.0

74 16.9 16.9 16.8 16.8 16.7 16.7 16.7 16.6 16.6 16.5

75 16.5 16.4 16.4 16.3 16.3 16.3 16.2 16.2 16.1 16.1

76 16.0 16.0 16.0 15.9 15.9 15.8 15.8 15.8 15.7 15.7

77 15.6 15.6 15.6 15.5 15.5 15.4 15.4 15.4 15.3 15.3

78 15.2 15.2 15.2 15.1 15.1 15.0 15.0 15.0 14.9 14.9

79 14.9 14.8 14.8 14.7 14.7 14.7 14.6 14.6 14.6 14.5

80 14.5 14.4 14.4 14.4 14.3 14.3 14.3 14.2 14.2 14.2

81 14.1 14.1 14.1 14.0 14.0 14.0 13.9 13.9 13.9 13.8

82 13.8 13.8 13.7 13.7 13.7 13.6 13.6 13.6 13.5 13.5

83 13.5 13.4 13.4 13.4 13.3 13.3 13.3 13.2 13.2 13.2

84 13.1 13.1 13.1 13.0 13.0 13.0 13.0 12.9 12.9 12.9

85 12.8 12.8 12.8 12.7 12.7 12.7 12.7 12.6 12.6 12.6

86 12.5 12.5 12.5 12.4 12.4 12.4 12.4 12.3 12.3 12.3

87 12.2 12.2 12.2 12.2 12.1 12.1 12.1 12.1 12.0 12.0

88 12.0 11.9 11.9 11.9 11.9 11.8 11.8 11.8 11.8 11.7

89 11.7 11.7 11.7 11.6 11.6 11.6 11.5 11.5 11.5 11.5

90 11.4 11.4 11.4 11.4 11.3 11.3 11.3 11.3 11.2 11.2

91 11.2 11.2 11.1 11.1 11.1 11.1 11.0 11.0 11.0 11.0

92 11.0 10.9 10.9 10.9 10.9 10.8 10.8 10.8 10.8 10.7

93 10.7 10.7 10.7 10.6 10.6 10.6 10.6 10.6 10.5 10.5

5

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

Page 64: Hardness Conversion Tables

L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

10 1854 1817 1782 1748 1714 1682 1650 1619 1590 1560

11 1532 1505 1478 1452 1427 1402 1378 1354 1332 1309

12 1288 1266 1246 1225 1206 1187 1168 1149 1132 1114

13 1097 1080 1064 1048 1033 1017 1002 988 974 960

14 946 933 919 907 894 882 870 858 846 835

15 824 813 802 792 782 772 762 752 743 733

16 724 715 706 698 689 681 673 665 657 649

17 642 634 627 619 612 605 599 592 585 579

18 572 566 560 554 548 542 536 530 525 519

19 514 508 503 498 493 488 483 478 473 468

20 464 459 454 450 446 441 437 433 429 424

21 420 416 413 409 405 401 397 394 390 387

22 383 380 376 373 369 366 363 360 357 354

23 350 347 344 342 339 336 333 330 327 325

24 322 319 317 314 311 309 306 304 301 299

25 297 294 292 290 287 285 283 281 279 276

26 274 272 270 268 266 264 262 260 258 256

27 254 252 251 249 247 245 243 242 240 238

28 236 235 233 231 230 228 227 225 224 222

29 220 219 217 216 214 213 212 210 209 207

30 206 205 203 202 201 199 198 197 195 194

31 193 192 190 189 188 187 186 184 183 182

32 181 180 179 178 177 176 174 173 172 171

33 170 169 168 167 166 165 164 163 162 161

34 160 159 159 158 157 156 155 154 153 152

35 151 150 150 149 148 147 146 145 145 144

36 143 142 141 141 140 139 138 138 137 136

37 135 135 134 133 133 132 131 130 130 129

38 128 128 127 126 126 125 124 124 123 123

39 122 121 121 120 119 119 118 118 117 116

40 116 115 115 114 114 113 112 112 111 111

41 110 110 109 109 108 108 107 107 106 106

42 105 105 104 104 103 103 102 102 101 101

43 100 99.8 99.3 98.9 98.4 98.0 97.5 97.1 96.6 96.2

44 95.8 95.3 94.9 94.5 94.0 93.6 93.2 92.8 92.4 92.0

45 91.6 91.1 90.7 90.3 89.9 89.6 89.2 88.8 88.4 88.0

46 87.6 87.2 86.9 86.5 86.1 85.7 85.4 85.0 84.6 84.3

47 83.9 83.6 83.2 82.9 82.5 82.2 81.8 81.5 81.1 80.8

48 80.5 80.1 79.8 79.5 79.1 78.8 78.5 78.2 77.9 77.5

49 77.2 76.9 76.6 76.3 76.0 75.7 75.4 75.1 74.8 74.5

50 74.2 73.9 73.6 73.3 73.0 72.7 72.4 72.1 71.8 71.6

51 71.3 71.0 70.7 70.4 70.2 69.9 69.6 69.4 69.1 68.8

52 68.6 68.3 68.0 67.8 67.5 67.3 67.0 66.8 66.5 66.3

53 66.0 65.8 65.5 65.3 65.0 64.8 64.5 64.3 64.1 63.8

54 63.6 63.3 63.1 62.9 62.6 62.4 62.2 62.0 61.7 61.5

6

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L o a d 1 0 0 g f ( 0 . 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

55 61.3 61.1 60.8 60.6 60.4 60.2 60.0 59.8 59.5 59.3

56 59.1 58.9 58.7 58.5 58.3 58.1 57.9 57.7 57.5 57.3

57 57.1 56.9 56.7 56.5 56.3 56.1 55.9 55.7 55.5 55.3

58 55.1 54.9 54.7 54.5 54.4 54.2 54.0 53.8 53.6 53.4

59 53.3 53.1 52.9 52.7 52.5 52.4 52.2 52.0 51.8 51.7

60 51.5 51.3 51.2 51.0 50.8 50.7 50.5 50.3 50.2 50.0

61 49.8 49.7 49.5 49.3 49.2 49.0 48.9 48.7 48.5 48.4

62 48.2 48.1 47.9 47.8 47.6 47.5 47.3 47.2 47.0 46.9

63 46.7 46.6 46.4 46.3 46.1 46.0 45.8 45.7 45.5 45.4

64 45.3 45.1 45.0 44.8 44.7 44.6 44.4 44.3 44.2 44.0

65 43.9 43.7 43.6 43.5 43.3 43.2 43.1 43.0 42.8 42.7

66 42.6 42.4 42.3 42.2 42.1 41.9 41.8 41.7 41.5 41.4

67 41.3 41.2 41.1 40.9 40.8 40.7 40.6 40.5 40.3 40.2

68 40.1 40.0 39.9 39.7 39.6 39.5 39.4 39.3 39.2 39.1

69 38.9 38.8 38.7 38.6 38.5 38.4 38.3 38.2 38.1 37.9

70 37.8 37.7 37.6 37.5 37.4 37.3 37.2 37.1 37.0 36.9

71 36.8 36.7 36.6 36.5 36.4 36.3 36.2 36.1 36.0 35.9

72 35.8 35.7 35.6 35.5 35.4 35.3 35.2 35.1 35.0 34.9

73 34.8 34.7 34.6 34.5 34.4 34.3 34.2 34.1 34.0 33.9

74 33.9 33.8 33.7 33.6 33.5 33.4 33.3 33.2 33.1 33.0

75 33.0 32.9 32.8 32.7 32.6 32.5 32.4 32.4 32.3 32.2

76 32.1 32.0 31.9 31.8 31.8 31.7 31.6 31.5 31.4 31.4

77 31.3 31.2 31.1 31.0 30.9 30.9 30.8 30.7 30.6 30.6

78 30.5 30.4 30.3 30.2 30.2 30.1 30.0 29.9 29.9 29.8

79 29.7 29.6 29.6 29.5 29.4 29.3 29.3 29.2 29.1 29.0

80 29.0 28.9 28.8 28.8 28.7 28.6 28.5 28.5 28.4 28.3

81 28.3 28.2 28.1 28.0 28.0 27.9 27.8 27.8 27.7 27.6

82 27.6 27.5 27.4 27.4 27.3 27.2 27.2 27.1 27.0 27.0

83 26.9 26.8 26.8 26.7 26.7 26.6 26.5 26.5 26.4 26.3

84 26.3 26.2 26.2 26.1 26.0 26.0 25.9 25.8 25.8 25.7

85 25.7 25.6 25.5 25.5 25.4 25.4 25.3 25.2 25.2 25.1

86 25.1 25.0 25.0 24.9 24.8 24.8 24.7 24.7 24.6 24.6

87 24.5 24.4 24.4 24.3 24.3 24.2 24.2 24.1 24.1 24.0

88 23.9 23.9 23.8 23.8 23.7 23.7 23.6 23.6 23.5 23.5

89 23.4 23.4 23.3 23.2 23.2 23.1 23.1 23.0 23.0 22.9

90 22.9 22.8 22.8 22.7 22.7 22.6 22.6 22.5 22.5 22.4

91 22.4 22.3 22.3 22.2 22.2 22.1 22.1 22.0 22.0 22.0

92 21.9 21.9 21.8 21.8 21.7 21.7 21.6 21.6 21.5 21.5

93 21.4 21.4 21.3 21.3 21.3 21.2 21.2 21.1 21.1 21.0

94 21.0 20.9 20.9 20.8 20.8 20.8 20.7 20.7 20.6 20.6

95 20.5 20.5 20.5 20.4 20.4 20.3 20.3 20.2 20.2 20.2

96 20.1 20.1 20.0 20.0 20.0 19.9 19.9 19.8 19.8 19.7

97 19.7 19.7 19.6 19.6 19.5 19.5 19.5 19.4 19.4 19.3

98 19.3 19.3 19.2 19.2 19.1 19.1 19.1 19.0 19.0 19.0

99 18.9 18.9 18.8 18.8 18.8 18.7 18.7 18.7 18.6 18.6

7

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L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

14 1892 1865 1839 1813 1788 1764 1740 1716 1693 1670

15 1648 1626 1605 1584 1564 1543 1524 1504 1485 1467

16 1448 1431 1413 1396 1379 1362 1346 1330 1314 1298

17 1283 1268 1253 1239 1225 1211 1197 1184 1170 1157

18 1144 1132 1119 1107 1095 1083 1072 1060 1049 1038

19 1027 1016 1006 995 985 975 965 955 946 936

20 927 918 909 900 891 882 874 865 857 849

21 841 833 825 817 810 802 795 787 780 773

22 766 759 752 746 739 732 726 720 713 707

23 701 695 689 683 677 671 666 660 655 649

24 644 638 633 628 623 618 613 608 603 598

25 593 589 584 579 575 570 566 561 557 553

26 549 544 540 536 532 528 524 520 516 512

27 509 505 501 498 494 490 487 483 480 476

28 473 470 466 463 460 457 453 450 447 444

29 441 438 435 432 429 426 423 420 418 415

30 412 409 407 404 401 399 396 393 391 388

31 386 383 381 378 376 374 371 369 367 364

32 362 360 358 355 353 351 349 347 345 343

33 340 338 336 334 332 330 328 326 325 323

34 321 319 317 315 313 312 310 308 306 304

35 303 301 299 298 296 294 293 291 289 288

36 286 285 283 281 280 278 277 275 274 272

37 271 269 268 267 265 264 262 261 260 258

38 257 255 254 253 251 250 249 248 246 245

39 244 243 241 240 239 238 236 235 234 233

40 232 231 229 228 227 226 225 224 223 222

41 221 220 218 217 216 215 214 213 212 211

42 210 209 208 207 206 205 204 203 202 201

43 201 200 199 198 197 196 195 194 193 192

44 192 191 190 189 188 187 186 186 185 184

45 183 182 181 181 180 179 178 178 177 176

46 175 174 174 173 172 171 171 170 169 169

47 168 167 166 166 165 164 164 163 162 162

48 161 160 160 159 158 158 157 156 156 155

49 154 154 153 153 152 151 151 150 150 149

50 148 148 147 147 146 145 145 144 144 143

51 143 142 141 141 140 140 139 139 138 138

52 137 137 136 136 135 135 134 134 133 133

53 132 132 131 131 130 130 129 129 128 128

54 127 127 126 126 125 125 124 124 123 123

55 123 122 122 121 121 120 120 120 119 119

56 118 118 117 117 117 116 116 115 115 115

57 114 114 113 113 113 112 112 111 111 111

58 110 110 109 109 109 108 108 108 107 107

8

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L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

59 107 106 106 105 105 105 104 104 104 103

60 103 103 102 102 102 101 101 101 100 100

61 99.7 99.3 99.0 98.7 98.4 98.0 97.7 97.4 97.1 96.8

62 96.5 96.2 95.8 95.5 95.2 94.9 94.6 94.3 94.0 93.7

63 93.4 93.1 92.8 92.5 92.2 92.0 91.7 91.4 91.1 90.8

64 90.5 90.2 90.0 89.7 89.4 89.1 88.9 88.6 88.3 88.0

65 87.8 87.5 87.2 87.0 86.7 86.4 86.2 85.9 85.6 85.4

66 85.1 84.9 84.6 84.4 84.1 83.8 83.6 83.3 83.1 82.8

67 82.6 82.4 82.1 81.9 81.6 81.4 81.1 80.9 80.7 80.4

68 80.2 80.0 79.7 79.5 79.3 79.0 78.8 78.6 78.3 78.1

69 77.9 77.7 77.4 77.2 77.0 76.8 76.5 76.3 76.1 75.9

70 75.7 75.5 75.2 75.0 74.8 74.6 74.4 74.2 74.0 73.8

71 73.6 73.4 73.1 72.9 72.7 72.5 72.3 72.1 71.9 71.7

72 71.5 71.3 71.1 70.9 70.7 70.5 70.4 70.2 70.0 69.8

73 69.6 69.4 69.2 69.0 68.8 68.6 68.5 68.3 68.1 67.9

74 67.7 67.5 67.3 67.2 67.0 66.8 66.6 66.5 66.3 66.1

75 65.9 65.7 65.6 65.4 65.2 65.0 64.9 64.7 64.5 64.4

76 64.2 64.0 63.9 63.7 63.5 63.4 63.2 63.0 62.9 62.7

77 62.5 62.4 62.2 62.1 61.9 61.7 61.6 61.4 61.3 61.1

78 60.9 60.8 60.6 60.5 60.3 60.2 60.0 59.9 59.7 59.6

79 59.4 59.3 59.1 59.0 58.8 58.7 58.5 58.4 58.2 58.1

80 57.9 57.8 57.6 57.5 57.4 57.2 57.1 56.9 56.8 56.7

81 56.5 56.4 56.2 56.1 56.0 55.8 55.7 55.6 55.4 55.3

82 55.1 55.0 54.9 54.7 54.6 54.5 54.3 54.2 54.1 54.0

83 53.8 53.7 53.6 53.4 53.3 53.2 53.1 52.9 52.8 52.7

84 52.6 52.4 52.3 52.2 52.1 51.9 51.8 51.7 51.6 51.4

85 51.3 51.2 51.1 51.0 50.8 50.7 50.6 50.5 50.4 50.3

86 50.1 50.0 49.9 49.8 49.7 49.6 49.4 49.3 49.2 49.1

87 49.0 48.9 48.8 48.7 48.5 48.4 48.3 48.2 48.1 48.0

88 47.9 47.8 47.7 47.6 47.4 47.3 47.2 47.1 47.0 46.9

89 46.8 46.7 46.6 46.5 46.4 46.3 46.2 46.1 46.0 45.9

90 45.8 45.7 45.6 45.5 45.4 45.3 45.2 45.1 45.0 44.9

91 44.8 44.7 44.6 44.5 44.4 44.3 44.2 44.1 44.0 43.9

92 43.8 43.7 43.6 43.5 43.4 43.3 43.2 43.1 43.1 43.0

93 42.9 42.8 42.7 42.6 42.5 42.4 42.3 42.2 42.1 42.1

94 42.0 41.9 41.8 41.7 41.6 41.5 41.4 41.3 41.3 41.2

95 41.1 41.0 40.9 40.8 40.7 40.7 40.6 40.5 40.4 40.3

96 40.2 40.2 40.1 40.0 39.9 39.8 39.7 39.7 39.6 39.5

97 39.4 39.3 39.2 39.2 39.1 39.0 38.9 38.8 38.8 38.7

98 38.6 38.5 38.5 38.4 38.3 38.2 38.1 38.1 38.0 37.9

99 37.8 37.8 37.7 37.6 37.5 37.5 37.4 37.3 37.2 37.2

100 37.1 37.0 36.9 36.9 36.8 36.7 36.6 36.6 36.5 36.4

101 36.3 36.3 36.2 36.1 36.1 36.0 35.9 35.9 35.8 35.7

102 35.6 35.6 35.5 35.4 35.4 35.3 35.2 35.2 35.1 35.0

103 35.0 34.9 34.8 34.7 34.7 34.6 34.5 34.5 34.4 34.3

9

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L o a d 2 0 0 g f ( 0 . 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

104 34.3 34.2 34.2 34.1 34.0 34.0 33.9 33.8 33.8 33.7

105 33.6 33.6 33.5 33.4 33.4 33.3 33.3 33.2 33.1 33.1

106 33.0 32.9 32.9 32.8 32.8 32.7 32.6 32.6 32.5 32.4

107 32.4 32.3 32.3 32.2 32.1 32.1 32.0 32.0 31.9 31.8

108 31.8 31.7 31.7 31.6 31.6 31.5 31.4 31.4 31.3 31.3

109 31.2 31.2 31.1 31.0 31.0 30.9 30.9 30.8 30.8 30.7

110 30.6 30.6 30.5 30.5 30.4 30.4 30.3 30.3 30.2 30.1

111 30.1 30.0 30.0 29.9 29.9 29.8 29.8 29.7 29.7 29.6

112 29.6 29.5 29.5 29.4 29.3 29.3 29.2 29.2 29.1 29.1

113 29.0 29.0 28.9 28.9 28.8 28.8 28.7 28.7 28.6 28.6

114 28.5 28.5 28.4 28.4 28.3 28.3 28.2 28.2 28.1 28.1

115 28.0 28.0 27.9 27.9 27.8 27.8 27.7 27.7 27.7 27.6

116 27.6 27.5 27.5 27.4 27.4 27.3 27.3 27.2 27.2 27.1

117 27.1 27.0 27.0 26.9 26.9 26.9 26.8 26.8 26.7 26.7

118 26.6 26.6 26.5 26.5 26.5 26.4 26.4 26.3 26.3 26.2

119 26.2 26.1 26.1 26.1 26.0 26.0 25.9 25.9 25.8 25.8

120 25.8 25.7 25.7 25.6 25.6 25.5 25.5 25.5 25.4 25.4

121 25.3 25.3 25.2 25.2 25.2 25.1 25.1 25.0 25.0 25.0

122 24.9 24.9 24.8 24.8 24.8 24.7 24.7 24.6 24.6 24.5

123 24.5 24.5 24.4 24.4 24.4 24.3 24.3 24.2 24.2 24.2

124 24.1 24.1 24.0 24.0 24.0 23.9 23.9 23.8 23.8 23.8

125 23.7 23.7 23.7 23.6 23.6 23.5 23.5 23.5 23.4 23.4

126 23.4 23.3 23.3 23.2 23.2 23.2 23.1 23.1 23.1 23.0

127 23.0 23.0 22.9 22.9 22.8 22.8 22.8 22.7 22.7 22.7

128 22.6 22.6 22.6 22.5 22.5 22.5 22.4 22.4 22.4 22.3

129 22.3 22.2 22.2 22.2 22.1 22.1 22.1 22.0 22.0 22.0

130 21.9 21.9 21.9 21.8 21.8 21.8 21.7 21.7 21.7 21.6

131 21.6 21.6 21.5 21.5 21.5 21.4 21.4 21.4 21.3 21.3

132 21.3 21.2 21.2 21.2 21.2 21.1 21.1 21.1 21.0 21.0

133 21.0 20.9 20.9 20.9 20.8 20.8 20.8 20.7 20.7 20.7

134 20.7 20.6 20.6 20.6 20.5 20.5 20.5 20.4 20.4 20.4

135 20.3 20.3 20.3 20.3 20.2 20.2 20.2 20.1 20.1 20.1

136 20.0 20.0 20.0 20.0 19.9 19.9 19.9 19.8 19.8 19.8

137 19.8 19.7 19.7 19.7 19.6 19.6 19.6 19.6 19.5 19.5

138 19.5 19.4 19.4 19.4 19.4 19.3 19.3 19.3 19.2 19.2

139 19.2 19.2 19.1 19.1 19.1 19.1 19.0 19.0 19.0 18.9

140 18.9 18.9 18.9 18.8 18.8 18.8 18.8 18.7 18.7 18.7

141 18.7 18.6 18.6 18.6 18.5 18.5 18.5 18.5 18.4 18.4

142 18.4 18.4 18.3 18.3 18.3 18.3 18.2 18.2 18.2 18.2

143 18.1 18.1 18.1 18.1 18.0 18.0 18.0 18.0 17.9 17.9

144 17.9 17.9 17.8 17.8 17.8 17.8 17.7 17.7 17.7 17.7

145 17.6 17.6 17.6 17.6 17.5 17.5 17.5 17.5 17.4 17.4

146 17.4 17.4 17.3 17.3 17.3 17.3 17.3 17.2 17.2 17.2

147 17.2 17.1 17.1 17.1 17.1 17.0 17.0 17.0 17.0 17.0

148 16.9 16.9 16.9 16.9 16.8 16.8 16.8 16.8 16.7 16.7

10

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L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

18 1717 1698 1679 1661 1643 1625 1608 1591 1574 1557

19 1541 1525 1509 1493 1478 1463 1448 1433 1419 1405

20 1391 1377 1363 1350 1337 1323 1311 1298 1286 1273

21 1261 1249 1238 1226 1215 1203 1192 1181 1170 1160

22 1149 1139 1129 1118 1108 1099 1089 1079 1070 1061

23 1051 1042 1033 1025 1016 1007 999 990 982 974

24 966 958 950 942 934 927 919 912 904 897

25 890 883 876 869 862 855 849 842 836 829

26 823 816 810 804 798 792 786 780 774 769

27 763 757 752 746 741 735 730 725 720 715

28 709 704 699 694 690 685 680 675 671 666

29 661 657 652 648 643 639 635 631 626 622

30 618 614 610 606 602 598 594 590 586 583

31 579 575 571 568 564 561 557 553 550 547

32 543 540 536 533 530 527 523 520 517 514

33 511 508 505 502 499 496 493 490 487 484

34 481 478 476 473 470 467 465 462 459 457

35 454 451 449 446 444 441 439 436 434 432

36 429 427 424 422 420 417 415 413 411 408

37 406 404 402 400 398 396 393 391 389 387

38 385 383 381 379 377 375 373 371 369 368

39 366 364 362 360 358 356 355 353 351 349

40 348 346 344 342 341 339 337 336 334 332

41 331 329 328 326 325 323 321 320 318 317

42 315 314 312 311 309 308 306 305 304 302

43 301 299 298 297 295 294 293 291 290 289

44 287 286 285 283 282 281 280 278 277 276

45 275 273 272 271 270 269 267 266 265 264

46 263 262 261 259 258 257 256 255 254 253

47 252 251 250 249 248 247 245 244 243 242

48 241 240 239 238 237 236 235 235 234 233

49 232 231 230 229 228 227 226 225 224 223

50 222 222 221 220 219 218 217 216 216 215

51 214 213 212 211 211 210 209 208 207 206

52 206 205 204 203 203 202 201 200 200 199

53 198 197 197 196 195 194 194 193 192 191

54 191 190 189 189 188 187 187 186 185 185

55 184 183 183 182 181 181 180 179 179 178

56 177 177 176 175 175 174 174 173 172 172

57 171 171 170 169 169 168 168 167 166 166

58 165 165 164 164 163 163 162 161 161 160

59 160 159 159 158 158 157 157 156 156 155

60 155 154 153 153 152 152 151 151 150 150

61 149 149 149 148 148 147 147 146 146 145

62 145 144 144 143 143 142 142 141 141 141

11

Page 70: Hardness Conversion Tables

L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

63 140 140 139 139 138 138 138 137 137 136

64 136 135 135 135 134 134 133 133 132 132

65 132 131 131 130 130 130 129 129 128 128

66 128 127 127 127 126 126 125 125 125 124

67 124 124 123 123 122 122 122 121 121 121

68 120 120 120 119 119 119 118 118 118 117

69 117 116 116 116 115 115 115 114 114 114

70 114 113 113 113 112 112 112 111 111 111

71 110 110 110 109 109 109 108 108 108 108

72 107 107 107 106 106 106 106 105 105 105

73 104 104 104 104 103 103 103 102 102 102

74 102 101 101 101 100 100 99.9 99.7 99.4 99.1

75 98.9 98.6 98.4 98.1 97.8 97.6 97.3 97.1 96.8 96.5

76 96.3 96.0 95.8 95.5 95.3 95.0 94.8 94.5 94.3 94.1

77 93.8 93.6 93.3 93.1 92.8 92.6 92.4 92.1 91.9 91.7

78 91.4 91.2 91.0 90.7 90.5 90.3 90.0 89.8 89.6 89.3

79 89.1 88.9 88.7 88.4 88.2 88.0 87.8 87.6 87.3 87.1

80 86.9 86.7 86.5 86.3 86.0 85.8 85.6 85.4 85.2 85.0

81 84.8 84.6 84.4 84.1 83.9 83.7 83.5 83.3 83.1 82.9

82 82.7 82.5 82.3 82.1 81.9 81.7 81.5 81.3 81.1 80.9

83 80.7 80.5 80.3 80.2 80.0 79.8 79.6 79.4 79.2 79.0

84 78.8 78.6 78.5 78.3 78.1 77.9 77.7 77.5 77.3 77.2

85 77.0 76.8 76.6 76.4 76.3 76.1 75.9 75.7 75.6 75.4

86 75.2 75.0 74.9 74.7 74.5 74.3 74.2 74.0 73.8 73.7

87 73.5 73.3 73.1 73.0 72.8 72.6 72.5 72.3 72.2 72.0

88 71.8 71.7 71.5 71.3 71.2 71.0 70.9 70.7 70.5 70.4

89 70.2 70.1 69.9 69.7 69.6 69.4 69.3 69.1 69.0 68.8

90 68.7 68.5 68.4 68.2 68.1 67.9 67.8 67.6 67.5 67.3

91 67.2 67.0 66.9 66.7 66.6 66.4 66.3 66.1 66.0 65.9

92 65.7 65.6 65.4 65.3 65.1 65.0 64.9 64.7 64.6 64.4

93 64.3 64.2 64.0 63.9 63.8 63.6 63.5 63.4 63.2 63.1

94 62.9 62.8 62.7 62.5 62.4 62.3 62.2 62.0 61.9 61.8

95 61.6 61.5 61.4 61.2 61.1 61.0 60.9 60.7 60.6 60.5

96 60.4 60.2 60.1 60.0 59.9 59.7 59.6 59.5 59.4 59.2

97 59.1 59.0 58.9 58.7 58.6 58.5 58.4 58.3 58.2 58.0

98 57.9 57.8 57.7 57.6 57.4 57.3 57.2 57.1 57.0 56.9

99 56.7 56.6 56.5 56.4 56.3 56.2 56.1 56.0 55.8 55.7

100 55.6 55.5 55.4 55.3 55.2 55.1 55.0 54.8 54.7 54.6

101 54.5 54.4 54.3 54.2 54.1 54.0 53.9 53.8 53.7 53.6

102 53.5 53.4 53.3 53.1 53.0 52.9 52.8 52.7 52.6 52.5

103 52.4 52.3 52.2 52.1 52.0 51.9 51.8 51.7 51.6 51.5

104 51.4 51.3 51.2 51.1 51.0 50.9 50.8 50.7 50.6 50.5

105 50.4 50.4 50.3 50.2 50.1 50.0 49.9 49.8 49.7 49.6

106 49.5 49.4 49.3 49.2 49.1 49.0 48.9 48.9 48.8 48.7

107 48.6 48.5 48.4 48.3 48.2 48.1 48.0 48.0 47.9 47.8

12

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L o a d 3 0 0 g f ( 0 . 3 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

108 47.7 47.6 47.5 47.4 47.3 47.2 47.2 47.1 47.0 46.9

109 46.8 46.7 46.6 46.6 46.5 46.4 46.3 46.2 46.1 46.1

110 46.0 45.9 45.8 45.7 45.6 45.6 45.5 45.4 45.3 45.2

111 45.1 45.1 45.0 44.9 44.8 44.7 44.7 44.6 44.5 44.4

112 44.3 44.3 44.2 44.1 44.0 43.9 43.9 43.8 43.7 43.6

113 43.6 43.5 43.4 43.3 43.3 43.2 43.1 43.0 42.9 42.9

114 42.8 42.7 42.6 42.6 42.5 42.4 42.4 42.3 42.2 42.1

115 42.1 42.0 41.9 41.8 41.8 41.7 41.6 41.5 41.5 41.4

116 41.3 41.3 41.2 41.1 41.1 41.0 40.9 40.8 40.8 40.7

117 40.6 40.6 40.5 40.4 40.4 40.3 40.2 40.1 40.1 40.0

118 39.9 39.9 39.8 39.7 39.7 39.6 39.5 39.5 39.4 39.3

119 39.3 39.2 39.1 39.1 39.0 38.9 38.9 38.8 38.8 38.7

120 38.6 38.6 38.5 38.4 38.4 38.3 38.2 38.2 38.1 38.1

121 38.0 37.9 37.9 37.8 37.7 37.7 37.6 37.6 37.5 37.4

122 37.4 37.3 37.2 37.2 37.1 37.1 37.0 36.9 36.9 36.8

123 36.8 36.7 36.6 36.6 36.5 36.5 36.4 36.3 36.3 36.2

124 36.2 36.1 36.1 36.0 35.9 35.9 35.8 35.8 35.7 35.7

125 35.6 35.5 35.5 35.4 35.4 35.3 35.3 35.2 35.1 35.1

126 35.0 35.0 34.9 34.9 34.8 34.8 34.7 34.6 34.6 34.5

127 34.5 34.4 34.4 34.3 34.3 34.2 34.2 34.1 34.1 34.0

128 33.9 33.9 33.8 33.8 33.7 33.7 33.6 33.6 33.5 33.5

129 33.4 33.4 33.3 33.3 33.2 33.2 33.1 33.1 33.0 33.0

130 32.9 32.9 32.8 32.8 32.7 32.7 32.6 32.6 32.5 32.5

131 32.4 32.4 32.3 32.3 32.2 32.2 32.1 32.1 32.0 32.0

132 31.9 31.9 31.8 31.8 31.7 31.7 31.6 31.6 31.5 31.5

133 31.4 31.4 31.3 31.3 31.3 31.2 31.2 31.1 31.1 31.0

134 31.0 30.9 30.9 30.8 30.8 30.7 30.7 30.7 30.6 30.6

135 30.5 30.5 30.4 30.4 30.3 30.3 30.2 30.2 30.2 30.1

136 30.1 30.0 30.0 29.9 29.9 29.9 29.8 29.8 29.7 29.7

137 29.6 29.6 29.5 29.5 29.5 29.4 29.4 29.3 29.3 29.2

138 29.2 29.2 29.1 29.1 29.0 29.0 29.0 28.9 28.9 28.8

139 28.8 28.7 28.7 28.7 28.6 28.6 28.5 28.5 28.5 28.4

140 28.4 28.3 28.3 28.3 28.2 28.2 28.1 28.1 28.1 28.0

141 28.0 27.9 27.9 27.9 27.8 27.8 27.7 27.7 27.7 27.6

142 27.6 27.5 27.5 27.5 27.4 27.4 27.4 27.3 27.3 27.2

143 27.2 27.2 27.1 27.1 27.0 27.0 27.0 26.9 26.9 26.9

144 26.8 26.8 26.7 26.7 26.7 26.6 26.6 26.6 26.5 26.5

145 26.5 26.4 26.4 26.3 26.3 26.3 26.2 26.2 26.2 26.1

146 26.1 26.1 26.0 26.0 26.0 25.9 25.9 25.8 25.8 25.8

147 25.7 25.7 25.7 25.6 25.6 25.6 25.5 25.5 25.5 25.4

148 25.4 25.4 25.3 25.3 25.3 25.2 25.2 25.2 25.1 25.1

149 25.1 25.0 25.0 25.0 24.9 24.9 24.9 24.8 24.8 24.8

150 24.7 24.7 24.7 24.6 24.6 24.6 24.5 24.5 24.5 24.4

151 24.4 24.4 24.3 24.3 24.3 24.2 24.2 24.2 24.1 24.1

152 24.1 24.0 24.0 24.0 23.9 23.9 23.9 23.9 23.8 23.8

13

Page 72: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

22 1915 1898 1881 1864 1847 1831 1815 1799 1783 1768

23 1752 1737 1722 1708 1693 1679 1664 1650 1637 1623

24 1609 1596 1583 1570 1557 1544 1532 1519 1507 1495

25 1483 1471 1460 1448 1437 1426 1414 1404 1393 1382

26 1371 1361 1350 1340 1330 1320 1310 1300 1291 1281

27 1272 1262 1253 1244 1235 1226 1217 1208 1199 1191

28 1182 1174 1166 1157 1149 1141 1133 1125 1118 1110

29 1102 1095 1087 1080 1072 1065 1058 1051 1044 1037

30 1030 1023 1016 1010 1003 997 990 984 977 971

31 965 958 952 946 940 934 928 922 917 911

32 905 900 894 889 883 878 872 867 862 856

33 851 846 841 836 831 826 821 816 811 807

34 802 797 793 788 783 779 774 770 765 761

35 757 752 748 744 740 736 731 727 723 719

36 715 711 707 704 700 696 692 688 685 681

37 677 673 670 666 663 659 656 652 649 645

38 642 639 635 632 629 625 622 619 616 613

39 609 606 603 600 597 594 591 588 585 582

40 579 576 574 571 568 565 562 560 557 554

41 551 549 546 543 541 538 536 533 531 528

42 526 523 521 518 516 513 511 508 506 504

43 501 499 497 494 492 490 488 485 483 481

44 479 477 474 472 470 468 466 464 462 460

45 458 456 454 452 450 448 446 444 442 440

46 438 436 434 432 431 429 427 425 423 421

47 420 418 416 414 413 411 409 407 406 404

48 402 401 399 397 396 394 392 391 389 388

49 386 385 383 381 380 378 377 375 374 372

50 371 369 368 366 365 363 362 361 359 358

51 356 355 354 352 351 350 348 347 345 344

52 343 342 340 339 338 336 335 334 333 331

53 330 329 328 326 325 324 323 321 320 319

54 318 317 316 314 313 312 311 310 309 308

55 306 305 304 303 302 301 300 299 298 297

56 296 295 293 292 291 290 289 288 287 286

57 285 284 283 282 281 280 279 278 277 277

58 276 275 274 273 272 271 270 269 268 267

59 266 265 265 264 263 262 261 260 259 258

60 258 257 256 255 254 253 252 252 251 250

61 249 248 248 247 246 245 244 244 243 242

62 241 240 240 239 238 237 237 236 235 234

63 234 233 232 231 231 230 229 228 228 227

64 226 226 225 224 224 223 222 221 221 220

65 219 219 218 217 217 216 215 215 214 213

66 213 212 212 211 210 210 209 208 208 207

14

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L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

67 207 206 205 205 204 203 203 202 202 201

68 200 200 199 199 198 198 197 196 196 195

69 195 194 194 193 192 192 191 191 190 190

70 189 189 188 188 187 187 186 185 185 184

71 184 183 183 182 182 181 181 180 180 179

72 179 178 178 177 177 176 176 175 175 174

73 174 173 173 173 172 172 171 171 170 170

74 169 169 168 168 167 167 167 166 166 165

75 165 164 164 163 163 163 162 162 161 161

76 160 160 160 159 159 158 158 158 157 157

77 156 156 156 155 155 154 154 154 153 153

78 152 152 152 151 151 150 150 150 149 149

79 149 148 148 147 147 147 146 146 146 145

80 145 144 144 144 143 143 143 142 142 142

81 141 141 141 140 140 140 139 139 139 138

82 138 138 137 137 137 136 136 136 135 135

83 135 134 134 134 133 133 133 132 132 132

84 131 131 131 130 130 130 130 129 129 129

85 128 128 128 127 127 127 127 126 126 126

86 125 125 125 124 124 124 124 123 123 123

87 122 122 122 122 121 121 121 121 120 120

88 120 119 119 119 119 118 118 118 118 117

89 117 117 117 116 116 116 115 115 115 115

90 114 114 114 114 113 113 113 113 112 112

91 112 112 111 111 111 111 110 110 110 110

92 110 109 109 109 109 108 108 108 108 107

93 107 107 107 106 106 106 106 106 105 105

94 105 105 104 104 104 104 104 103 103 103

95 103 102 102 102 102 102 101 101 101 101

96 101 100 100 100 99.8 99.5 99.3 99.1 98.9 98.7

97 98.5 98.3 98.1 97.9 97.7 97.5 97.3 97.1 96.9 96.7

98 96.5 96.3 96.1 95.9 95.7 95.5 95.4 95.2 95.0 94.8

99 94.6 94.4 94.2 94.0 93.8 93.6 93.4 93.3 93.1 92.9

100 92.7 92.5 92.3 92.1 92.0 91.8 91.6 91.4 91.2 91.1

101 90.9 90.7 90.5 90.3 90.2 90.0 89.8 89.6 89.5 89.3

102 89.1 88.9 88.8 88.6 88.4 88.2 88.1 87.9 87.7 87.5

103 87.4 87.2 87.0 86.9 86.7 86.5 86.4 86.2 86.0 85.9

104 85.7 85.5 85.4 85.2 85.1 84.9 84.7 84.6 84.4 84.2

105 84.1 83.9 83.8 83.6 83.4 83.3 83.1 83.0 82.8 82.7

106 82.5 82.3 82.2 82.0 81.9 81.7 81.6 81.4 81.3 81.1

107 81.0 80.8 80.7 80.5 80.4 80.2 80.1 79.9 79.8 79.6

108 79.5 79.3 79.2 79.0 78.9 78.7 78.6 78.5 78.3 78.2

109 78.0 77.9 77.7 77.6 77.5 77.3 77.2 77.0 76.9 76.8

110 76.6 76.5 76.3 76.2 76.1 75.9 75.8 75.6 75.5 75.4

111 75.2 75.1 75.0 74.8 74.7 74.6 74.4 74.3 74.2 74.0

15

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L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

112 73.9 73.8 73.6 73.5 73.4 73.2 73.1 73.0 72.9 72.7

113 72.6 72.5 72.3 72.2 72.1 72.0 71.8 71.7 71.6 71.5

114 71.3 71.2 71.1 71.0 70.8 70.7 70.6 70.5 70.3 70.2

115 70.1 70.0 69.9 69.7 69.6 69.5 69.4 69.2 69.1 69.0

116 68.9 68.8 68.7 68.5 68.4 68.3 68.2 68.1 68.0 67.8

117 67.7 67.6 67.5 67.4 67.3 67.1 67.0 66.9 66.8 66.7

118 66.6 66.5 66.4 66.2 66.1 66.0 65.9 65.8 65.7 65.6

119 65.5 65.4 65.2 65.1 65.0 64.9 64.8 64.7 64.6 64.5

120 64.4 64.3 64.2 64.1 63.9 63.8 63.7 63.6 63.5 63.4

121 63.3 63.2 63.1 63.0 62.9 62.8 62.7 62.6 62.5 62.4

122 62.3 62.2 62.1 62.0 61.9 61.8 61.7 61.6 61.5 61.4

123 61.3 61.2 61.1 61.0 60.9 60.8 60.7 60.6 60.5 60.4

124 60.3 60.2 60.1 60.0 59.9 59.8 59.7 59.6 59.5 59.4

125 59.3 59.2 59.1 59.0 59.0 58.9 58.8 58.7 58.6 58.5

126 58.4 58.3 58.2 58.1 58.0 57.9 57.8 57.7 57.7 57.6

127 57.5 57.4 57.3 57.2 57.1 57.0 56.9 56.8 56.8 56.7

128 56.6 56.5 56.4 56.3 56.2 56.1 56.1 56.0 55.9 55.8

129 55.7 55.6 55.5 55.4 55.4 55.3 55.2 55.1 55.0 54.9

130 54.9 54.8 54.7 54.6 54.5 54.4 54.3 54.3 54.2 54.1

131 54.0 53.9 53.9 53.8 53.7 53.6 53.5 53.4 53.4 53.3

132 53.2 53.1 53.0 53.0 52.9 52.8 52.7 52.6 52.6 52.5

133 52.4 52.3 52.2 52.2 52.1 52.0 51.9 51.9 51.8 51.7

134 51.6 51.5 51.5 51.4 51.3 51.2 51.2 51.1 51.0 50.9

135 50.9 50.8 50.7 50.6 50.6 50.5 50.4 50.3 50.3 50.2

136 50.1 50.0 50.0 49.9 49.8 49.8 49.7 49.6 49.5 49.5

137 49.4 49.3 49.2 49.2 49.1 49.0 49.0 48.9 48.8 48.7

138 48.7 48.6 48.5 48.5 48.4 48.3 48.3 48.2 48.1 48.0

139 48.0 47.9 47.8 47.8 47.7 47.6 47.6 47.5 47.4 47.4

140 47.3 47.2 47.2 47.1 47.0 47.0 46.9 46.8 46.8 46.7

141 46.6 46.6 46.5 46.4 46.4 46.3 46.2 46.2 46.1 46.0

142 46.0 45.9 45.8 45.8 45.7 45.7 45.6 45.5 45.5 45.4

143 45.3 45.3 45.2 45.1 45.1 45.0 45.0 44.9 44.8 44.8

144 44.7 44.6 44.6 44.5 44.5 44.4 44.3 44.3 44.2 44.2

145 44.1 44.0 44.0 43.9 43.8 43.8 43.7 43.7 43.6 43.5

146 43.5 43.4 43.4 43.3 43.3 43.2 43.1 43.1 43.0 43.0

147 42.9 42.8 42.8 42.7 42.7 42.6 42.6 42.5 42.4 42.4

148 42.3 42.3 42.2 42.1 42.1 42.0 42.0 41.9 41.9 41.8

149 41.8 41.7 41.6 41.6 41.5 41.5 41.4 41.4 41.3 41.3

150 41.2 41.1 41.1 41.0 41.0 40.9 40.9 40.8 40.8 40.7

151 40.7 40.6 40.5 40.5 40.4 40.4 40.3 40.3 40.2 40.2

152 40.1 40.1 40.0 40.0 39.9 39.9 39.8 39.8 39.7 39.7

153 39.6 39.5 39.5 39.4 39.4 39.3 39.3 39.2 39.2 39.1

154 39.1 39.0 39.0 38.9 38.9 38.8 38.8 38.7 38.7 38.6

155 38.6 38.5 38.5 38.4 38.4 38.3 38.3 38.2 38.2 38.1

156 38.1 38.0 38.0 37.9 37.9 37.8 37.8 37.8 37.7 37.7

16

Page 75: Hardness Conversion Tables

L o a d 5 0 0 g f ( 0 . 5 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

157 37.6 37.6 37.5 37.5 37.4 37.4 37.3 37.3 37.2 37.2

158 37.1 37.1 37.0 37.0 36.9 36.9 36.9 36.8 36.8 36.7

159 36.7 36.6 36.6 36.5 36.5 36.4 36.4 36.3 36.3 36.3

160 36.2 36.2 36.1 36.1 36.0 36.0 35.9 35.9 35.9 35.8

161 35.8 35.7 35.7 35.6 35.6 35.5 35.5 35.5 35.4 35.4

162 35.3 35.3 35.2 35.2 35.1 35.1 35.1 35.0 35.0 34.9

163 34.9 34.8 34.8 34.8 34.7 34.7 34.6 34.6 34.6 34.5

164 34.5 34.4 34.4 34.3 34.3 34.3 34.2 34.2 34.1 34.1

165 34.0 34.0 34.0 33.9 33.9 33.8 33.8 33.8 33.7 33.7

166 33.6 33.6 33.6 33.5 33.5 33.4 33.4 33.4 33.3 33.3

167 33.2 33.2 33.2 33.1 33.1 33.0 33.0 33.0 32.9 32.9

168 32.8 32.8 32.8 32.7 32.7 32.6 32.6 32.6 32.5 32.5

169 32.5 32.4 32.4 32.3 32.3 32.3 32.2 32.2 32.2 32.1

170 32.1 32.0 32.0 32.0 31.9 31.9 31.9 31.8 31.8 31.7

171 31.7 31.7 31.6 31.6 31.6 31.5 31.5 31.4 31.4 31.4

172 31.3 31.3 31.3 31.2 31.2 31.2 31.1 31.1 31.0 31.0

173 31.0 30.9 30.9 30.9 30.8 30.8 30.8 30.7 30.7 30.7

174 30.6 30.6 30.5 30.5 30.5 30.4 30.4 30.4 30.3 30.3

175 30.3 30.2 30.2 30.2 30.1 30.1 30.1 30.0 30.0 30.0

176 29.9 29.9 29.9 29.8 29.8 29.8 29.7 29.7 29.7 29.6

177 29.6 29.6 29.5 29.5 29.5 29.4 29.4 29.4 29.3 29.3

178 29.3 29.2 29.2 29.2 29.1 29.1 29.1 29.0 29.0 29.0

179 28.9 28.9 28.9 28.8 28.8 28.8 28.7 28.7 28.7 28.6

180 28.6 28.6 28.5 28.5 28.5 28.5 28.4 28.4 28.4 28.3

181 28.3 28.3 28.2 28.2 28.2 28.1 28.1 28.1 28.0 28.0

182 28.0 28.0 27.9 27.9 27.9 27.8 27.8 27.8 27.7 27.7

183 27.7 27.7 27.6 27.6 27.6 27.5 27.5 27.5 27.4 27.4

184 27.4 27.4 27.3 27.3 27.3 27.2 27.2 27.2 27.1 27.1

185 27.1 27.1 27.0 27.0 27.0 26.9 26.9 26.9 26.9 26.8

186 26.8 26.8 26.7 26.7 26.7 26.7 26.6 26.6 26.6 26.5

187 26.5 26.5 26.5 26.4 26.4 26.4 26.3 26.3 26.3 26.3

188 26.2 26.2 26.2 26.1 26.1 26.1 26.1 26.0 26.0 26.0

189 26.0 25.9 25.9 25.9 25.8 25.8 25.8 25.8 25.7 25.7

190 25.7 25.7 25.6 25.6 25.6 25.5 25.5 25.5 25.5 25.4

191 25.4 25.4 25.4 25.3 25.3 25.3 25.3 25.2 25.2 25.2

192 25.1 25.1 25.1 25.1 25.0 25.0 25.0 25.0 24.9 24.9

193 24.9 24.9 24.8 24.8 24.8 24.8 24.7 24.7 24.7 24.7

194 24.6 24.6 24.6 24.6 24.5 24.5 24.5 24.5 24.4 24.4

195 24.4 24.4 24.3 24.3 24.3 24.3 24.2 24.2 24.2 24.2

196 24.1 24.1 24.1 24.1 24.0 24.0 24.0 24.0 23.9 23.9

197 23.9 23.9 23.8 23.8 23.8 23.8 23.7 23.7 23.7 23.7

198 23.6 23.6 23.6 23.6 23.6 23.5 23.5 23.5 23.5 23.4

199 23.4 23.4 23.4 23.3 23.3 23.3 23.3 23.2 23.2 23.2

200 23.2 23.2 23.1 23.1 23.1 23.1 23.0 23.0 23.0 23.0

201 22.9 22.9 22.9 22.9 22.9 22.8 22.8 22.8 22.8 22.7

17

Page 76: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

35 1513 1505 1496 1488 1479 1471 1463 1455 1447 1439

36 1431 1423 1415 1407 1399 1392 1384 1377 1369 1362

37 1354 1347 1340 1333 1325 1318 1311 1304 1298 1291

38 1284 1277 1271 1264 1257 1251 1244 1238 1232 1225

39 1219 1213 1207 1200 1194 1188 1182 1176 1170 1165

40 1159 1153 1147 1142 1136 1130 1125 1119 1114 1108

41 1103 1098 1092 1087 1082 1076 1071 1066 1061 1056

42 1051 1046 1041 1036 1031 1026 1022 1017 1012 1007

43 1003 998 993 989 984 980 975 971 966 962

44 958 953 949 945 940 936 932 928 924 920

45 916 911 907 903 899 896 892 888 884 880

46 876 872 869 865 861 857 854 850 846 843

47 839 836 832 829 825 822 818 815 811 808

48 805 801 798 795 791 788 785 782 779 775

49 772 769 766 763 760 757 754 751 748 745

50 742 739 736 733 730 727 724 721 718 716

51 713 710 707 704 702 699 696 694 691 688

52 686 683 680 678 675 673 670 668 665 663

53 660 658 655 653 650 648 645 643 641 638

54 636 633 631 629 626 624 622 620 617 615

55 613 611 608 606 604 602 600 598 595 593

56 591 589 587 585 583 581 579 577 575 573

57 571 569 567 565 563 561 559 557 555 553

58 551 549 547 545 544 542 540 538 536 534

59 533 531 529 527 525 524 522 520 518 517

60 515 513 512 510 508 507 505 503 502 500

61 498 497 495 493 492 490 489 487 485 484

62 482 481 479 478 476 475 473 472 470 469

63 467 466 464 463 461 460 458 457 455 454

64 453 451 450 448 447 446 444 443 442 440

65 439 437 436 435 433 432 431 430 428 427

66 426 424 423 422 421 419 418 417 415 414

67 413 412 411 409 408 407 406 405 403 402

68 401 400 399 397 396 395 394 393 392 391

69 389 388 387 386 385 384 383 382 381 379

70 378 377 376 375 374 373 372 371 370 369

71 368 367 366 365 364 363 362 361 360 359

72 358 357 356 355 354 353 352 351 350 349

73 348 347 346 345 344 343 342 341 340 339

74 339 338 337 336 335 334 333 332 331 330

75 330 329 328 327 326 325 324 324 323 322

76 321 320 319 318 318 317 316 315 314 314

77 313 312 311 310 309 309 308 307 306 306

78 305 304 303 302 302 301 300 299 299 298

79 297 296 296 295 294 293 293 292 291 290

18

Page 77: Hardness Conversion Tables

L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

80 290 289 288 288 287 286 285 285 284 283

81 283 282 281 280 280 279 278 278 277 276

82 276 275 274 274 273 272 272 271 270 270

83 269 268 268 267 267 266 265 265 264 263

84 263 262 262 261 260 260 259 258 258 257

85 257 256 255 255 254 254 253 252 252 251

86 251 250 250 249 248 248 247 247 246 246

87 245 244 244 243 243 242 242 241 241 240

88 239 239 238 238 237 237 236 236 235 235

89 234 234 233 232 232 231 231 230 230 229

90 229 228 228 227 227 226 226 225 225 224

91 224 223 223 222 222 221 221 220 220 220

92 219 219 218 218 217 217 216 216 215 215

93 214 214 213 213 213 212 212 211 211 210

94 210 209 209 208 208 208 207 207 206 206

95 205 205 205 204 204 203 203 202 202 202

96 201 201 200 200 200 199 199 198 198 197

97 197 197 196 196 195 195 195 194 194 193

98 193 193 192 192 191 191 191 190 190 190

99 189 189 188 188 188 187 187 187 186 186

100 185 185 185 184 184 184 183 183 182 182

101 182 181 181 181 180 180 180 179 179 179

102 178 178 178 177 177 176 176 176 175 175

103 175 174 174 174 173 173 173 172 172 172

104 171 171 171 170 170 170 169 169 169 168

105 168 168 168 167 167 167 166 166 166 165

106 165 165 164 164 164 163 163 163 163 162

107 162 162 161 161 161 160 160 160 160 159

108 159 159 158 158 158 157 157 157 157 156

109 156 156 155 155 155 155 154 154 154 154

110 153 153 153 152 152 152 152 151 151 151

111 150 150 150 150 149 149 149 149 148 148

112 148 148 147 147 147 146 146 146 146 145

113 145 145 145 144 144 144 144 143 143 143

114 143 142 142 142 142 141 141 141 141 140

115 140 140 140 139 139 139 139 138 138 138

116 138 138 137 137 137 137 136 136 136 136

117 135 135 135 135 135 134 134 134 134 133

118 133 133 133 132 132 132 132 132 131 131

119 131 131 130 130 130 130 130 129 129 129

120 129 129 128 128 128 128 127 127 127 127

121 127 126 126 126 126 126 125 125 125 125

122 125 124 124 124 124 124 123 123 123 123

123 123 122 122 122 122 122 121 121 121 121

124 121 120 120 120 120 120 119 119 119 119

19

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L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

125 119 118 118 118 118 118 118 117 117 117

126 117 117 116 116 116 116 116 115 115 115

127 115 115 115 114 114 114 114 114 114 113

128 113 113 113 113 112 112 112 112 112 112

129 111 111 111 111 111 111 110 110 110 110

130 110 110 109 109 109 109 109 109 108 108

131 108 108 108 108 107 107 107 107 107 107

132 106 106 106 106 106 106 105 105 105 105

133 105 105 104 104 104 104 104 104 104 103

134 103 103 103 103 103 102 102 102 102 102

135 102 102 101 101 101 101 101 101 101 100

136 100 100 99.9 99.8 99.7 99.5 99.4 99.2 99.1 98.9

137 98.8 98.6 98.5 98.3 98.2 98.1 97.9 97.8 97.6 97.5

138 97.4 97.2 97.1 96.9 96.8 96.7 96.5 96.4 96.2 96.1

139 96.0 95.8 95.7 95.5 95.4 95.3 95.1 95.0 94.9 94.7

140 94.6 94.5 94.3 94.2 94.1 93.9 93.8 93.7 93.5 93.4

141 93.3 93.1 93.0 92.9 92.7 92.6 92.5 92.3 92.2 92.1

142 91.9 91.8 91.7 91.6 91.4 91.3 91.2 91.0 90.9 90.8

143 90.7 90.5 90.4 90.3 90.2 90.0 89.9 89.8 89.7 89.5

144 89.4 89.3 89.2 89.0 88.9 88.8 88.7 88.5 88.4 88.3

145 88.2 88.1 87.9 87.8 87.7 87.6 87.5 87.3 87.2 87.1

146 87.0 86.9 86.7 86.6 86.5 86.4 86.3 86.1 86.0 85.9

147 85.8 85.7 85.6 85.4 85.3 85.2 85.1 85.0 84.9 84.8

148 84.6 84.5 84.4 84.3 84.2 84.1 84.0 83.8 83.7 83.6

149 83.5 83.4 83.3 83.2 83.1 83.0 82.8 82.7 82.6 82.5

150 82.4 82.3 82.2 82.1 82.0 81.9 81.7 81.6 81.5 81.4

151 81.3 81.2 81.1 81.0 80.9 80.8 80.7 80.6 80.5 80.4

152 80.2 80.1 80.0 79.9 79.8 79.7 79.6 79.5 79.4 79.3

153 79.2 79.1 79.0 78.9 78.8 78.7 78.6 78.5 78.4 78.3

154 78.2 78.1 78.0 77.9 77.8 77.7 77.6 77.5 77.4 77.3

155 77.2 77.1 77.0 76.9 76.8 76.7 76.6 76.5 76.4 76.3

156 76.2 76.1 76.0 75.9 75.8 75.7 75.6 75.5 75.4 75.3

157 75.2 75.1 75.0 74.9 74.8 74.7 74.6 74.5 74.5 74.4

158 74.3 74.2 74.1 74.0 73.9 73.8 73.7 73.6 73.5 73.4

159 73.3 73.2 73.2 73.1 73.0 72.9 72.8 72.7 72.6 72.5

160 72.4 72.3 72.2 72.2 72.1 72.0 71.9 71.8 71.7 71.6

161 71.5 71.4 71.3 71.3 71.2 71.1 71.0 70.9 70.8 70.7

162 70.6 70.6 70.5 70.4 70.3 70.2 70.1 70.0 70.0 69.9

163 69.8 69.7 69.6 69.5 69.4 69.4 69.3 69.2 69.1 69.0

164 68.9 68.8 68.8 68.7 68.6 68.5 68.4 68.3 68.3 68.2

165 68.1 68.0 67.9 67.9 67.8 67.7 67.6 67.5 67.4 67.4

166 67.3 67.2 67.1 67.0 67.0 66.9 66.8 66.7 66.6 66.6

167 66.5 66.4 66.3 66.2 66.2 66.1 66.0 65.9 65.8 65.8

168 65.7 65.6 65.5 65.5 65.4 65.3 65.2 65.1 65.1 65.0

169 64.9 64.8 64.8 64.7 64.6 64.5 64.5 64.4 64.3 64.2

20

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L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

170 64.2 64.1 64.0 63.9 63.9 63.8 63.7 63.6 63.6 63.5

171 63.4 63.3 63.3 63.2 63.1 63.0 63.0 62.9 62.8 62.7

172 62.7 62.6 62.5 62.5 62.4 62.3 62.2 62.2 62.1 62.0

173 61.9 61.9 61.8 61.7 61.7 61.6 61.5 61.4 61.4 61.3

174 61.2 61.2 61.1 61.0 61.0 60.9 60.8 60.7 60.7 60.6

175 60.5 60.5 60.4 60.3 60.3 60.2 60.1 60.1 60.0 59.9

176 59.9 59.8 59.7 59.6 59.6 59.5 59.4 59.4 59.3 59.2

177 59.2 59.1 59.0 59.0 58.9 58.8 58.8 58.7 58.6 58.6

178 58.5 58.4 58.4 58.3 58.3 58.2 58.1 58.1 58.0 57.9

179 57.9 57.8 57.7 57.7 57.6 57.5 57.5 57.4 57.3 57.3

180 57.2 57.2 57.1 57.0 57.0 56.9 56.8 56.8 56.7 56.7

181 56.6 56.5 56.5 56.4 56.3 56.3 56.2 56.2 56.1 56.0

182 56.0 55.9 55.8 55.8 55.7 55.7 55.6 55.5 55.5 55.4

183 55.4 55.3 55.2 55.2 55.1 55.1 55.0 54.9 54.9 54.8

184 54.8 54.7 54.6 54.6 54.5 54.5 54.4 54.3 54.3 54.2

185 54.2 54.1 54.1 54.0 53.9 53.9 53.8 53.8 53.7 53.6

186 53.6 53.5 53.5 53.4 53.4 53.3 53.2 53.2 53.1 53.1

187 53.0 53.0 52.9 52.8 52.8 52.7 52.7 52.6 52.6 52.5

188 52.5 52.4 52.3 52.3 52.2 52.2 52.1 52.1 52.0 52.0

189 51.9 51.8 51.8 51.7 51.7 51.6 51.6 51.5 51.5 51.4

190 51.4 51.3 51.2 51.2 51.1 51.1 51.0 51.0 50.9 50.9

191 50.8 50.8 50.7 50.7 50.6 50.6 50.5 50.5 50.4 50.3

192 50.3 50.2 50.2 50.1 50.1 50.0 50.0 49.9 49.9 49.8

193 49.8 49.7 49.7 49.6 49.6 49.5 49.5 49.4 49.4 49.3

194 49.3 49.2 49.2 49.1 49.1 49.0 49.0 48.9 48.9 48.8

195 48.8 48.7 48.7 48.6 48.6 48.5 48.5 48.4 48.4 48.3

196 48.3 48.2 48.2 48.1 48.1 48.0 48.0 47.9 47.9 47.8

197 47.8 47.7 47.7 47.6 47.6 47.5 47.5 47.4 47.4 47.3

198 47.3 47.2 47.2 47.1 47.1 47.1 47.0 47.0 46.9 46.9

199 46.8 46.8 46.7 46.7 46.6 46.6 46.5 46.5 46.4 46.4

200 46.4 46.3 46.3 46.2 46.2 46.1 46.1 46.0 46.0 45.9

201 45.9 45.8 45.8 45.8 45.7 45.7 45.6 45.6 45.5 45.5

202 45.4 45.4 45.3 45.3 45.3 45.2 45.2 45.1 45.1 45.0

203 45.0 44.9 44.9 44.9 44.8 44.8 44.7 44.7 44.6 44.6

204 44.6 44.5 44.5 44.4 44.4 44.3 44.3 44.2 44.2 44.2

205 44.1 44.1 44.0 44.0 43.9 43.9 43.9 43.8 43.8 43.7

206 43.7 43.6 43.6 43.6 43.5 43.5 43.4 43.4 43.4 43.3

207 43.3 43.2 43.2 43.1 43.1 43.1 43.0 43.0 42.9 42.9

208 42.9 42.8 42.8 42.7 42.7 42.6 42.6 42.6 42.5 42.5

209 42.4 42.4 42.4 42.3 42.3 42.2 42.2 42.2 42.1 42.1

210 42.0 42.0 42.0 41.9 41.9 41.8 41.8 41.8 41.7 41.7

211 41.6 41.6 41.6 41.5 41.5 41.4 41.4 41.4 41.3 41.3

212 41.3 41.2 41.2 41.1 41.1 41.1 41.0 41.0 40.9 40.9

213 40.9 40.8 40.8 40.8 40.7 40.7 40.6 40.6 40.6 40.5

214 40.5 40.4 40.4 40.4 40.3 40.3 40.3 40.2 40.2 40.1

21

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L o a d 1 0 0 0 g f ( 1 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

215 40.1 40.1 40.0 40.0 40.0 39.9 39.9 39.8 39.8 39.8

216 39.7 39.7 39.7 39.6 39.6 39.6 39.5 39.5 39.4 39.4

217 39.4 39.3 39.3 39.3 39.2 39.2 39.2 39.1 39.1 39.0

218 39.0 39.0 38.9 38.9 38.9 38.8 38.8 38.8 38.7 38.7

219 38.7 38.6 38.6 38.6 38.5 38.5 38.4 38.4 38.4 38.3

220 38.3 38.3 38.2 38.2 38.2 38.1 38.1 38.1 38.0 38.0

221 38.0 37.9 37.9 37.9 37.8 37.8 37.8 37.7 37.7 37.7

222 37.6 37.6 37.6 37.5 37.5 37.4 37.4 37.4 37.3 37.3

223 37.3 37.2 37.2 37.2 37.1 37.1 37.1 37.0 37.0 37.0

224 36.9 36.9 36.9 36.9 36.8 36.8 36.8 36.7 36.7 36.7

225 36.6 36.6 36.6 36.5 36.5 36.5 36.4 36.4 36.4 36.3

226 36.3 36.3 36.2 36.2 36.2 36.1 36.1 36.1 36.0 36.0

227 36.0 35.9 35.9 35.9 35.9 35.8 35.8 35.8 35.7 35.7

228 35.7 35.6 35.6 35.6 35.5 35.5 35.5 35.4 35.4 35.4

229 35.4 35.3 35.3 35.3 35.2 35.2 35.2 35.1 35.1 35.1

230 35.0 35.0 35.0 35.0 34.9 34.9 34.9 34.8 34.8 34.8

231 34.7 34.7 34.7 34.7 34.6 34.6 34.6 34.5 34.5 34.5

232 34.4 34.4 34.4 34.4 34.3 34.3 34.3 34.2 34.2 34.2

233 34.2 34.1 34.1 34.1 34.0 34.0 34.0 33.9 33.9 33.9

234 33.9 33.8 33.8 33.8 33.7 33.7 33.7 33.7 33.6 33.6

235 33.6 33.5 33.5 33.5 33.5 33.4 33.4 33.4 33.3 33.3

236 33.3 33.3 33.2 33.2 33.2 33.1 33.1 33.1 33.1 33.0

237 33.0 33.0 33.0 32.9 32.9 32.9 32.8 32.8 32.8 32.8

238 32.7 32.7 32.7 32.6 32.6 32.6 32.6 32.5 32.5 32.5

239 32.5 32.4 32.4 32.4 32.3 32.3 32.3 32.3 32.2 32.2

240 32.2 32.2 32.1 32.1 32.1 32.1 32.0 32.0 32.0 31.9

241 31.9 31.9 31.9 31.8 31.8 31.8 31.8 31.7 31.7 31.7

242 31.7 31.6 31.6 31.6 31.6 31.5 31.5 31.5 31.4 31.4

243 31.4 31.4 31.3 31.3 31.3 31.3 31.2 31.2 31.2 31.2

244 31.1 31.1 31.1 31.1 31.0 31.0 31.0 31.0 30.9 30.9

245 30.9 30.9 30.8 30.8 30.8 30.8 30.7 30.7 30.7 30.7

246 30.6 30.6 30.6 30.6 30.5 30.5 30.5 30.5 30.4 30.4

247 30.4 30.4 30.3 30.3 30.3 30.3 30.2 30.2 30.2 30.2

248 30.1 30.1 30.1 30.1 30.0 30.0 30.0 30.0 30.0 29.9

249 29.9 29.9 29.9 29.8 29.8 29.8 29.8 29.7 29.7 29.7

250 29.7 29.6 29.6 29.6 29.6 29.5 29.5 29.5 29.5 29.5

251 29.4 29.4 29.4 29.4 29.3 29.3 29.3 29.3 29.2 29.2

252 29.2 29.2 29.1 29.1 29.1 29.1 29.1 29.0 29.0 29.0

253 29.0 28.9 28.9 28.9 28.9 28.9 28.8 28.8 28.8 28.8

254 28.7 28.7 28.7 28.7 28.6 28.6 28.6 28.6 28.6 28.5

255 28.5 28.5 28.5 28.4 28.4 28.4 28.4 28.4 28.3 28.3

256 28.3 28.3 28.2 28.2 28.2 28.2 28.2 28.1 28.1 28.1

257 28.1 28.0 28.0 28.0 28.0 28.0 27.9 27.9 27.9 27.9

258 27.9 27.8 27.8 27.8 27.8 27.7 27.7 27.7 27.7 27.7

259 27.6 27.6 27.6 27.6 27.6 27.5 27.5 27.5 27.5 27.4

22

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L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

49 1544 1538 1532 1526 1519 1513 1507 1501 1495 1489

50 1483 1477 1471 1466 1460 1454 1448 1443 1437 1431

51 1426 1420 1414 1409 1404 1398 1393 1387 1382 1377

52 1371 1366 1361 1356 1350 1345 1340 1335 1330 1325

53 1320 1315 1310 1305 1300 1295 1291 1286 1281 1276

54 1272 1267 1262 1258 1253 1248 1244 1239 1235 1230

55 1226 1221 1217 1213 1208 1204 1199 1195 1191 1187

56 1182 1178 1174 1170 1166 1162 1157 1153 1149 1145

57 1141 1137 1133 1129 1125 1122 1118 1114 1110 1106

58 1102 1098 1095 1091 1087 1083 1080 1076 1072 1069

59 1065 1062 1058 1054 1051 1047 1044 1040 1037 1033

60 1030 1027 1023 1020 1016 1013 1010 1006 1003 1000

61 997 993 990 987 984 980 977 974 971 968

62 965 962 958 955 952 949 946 943 940 937

63 934 931 928 925 922 920 917 914 911 908

64 905 902 900 897 894 891 889 886 883 880

65 878 875 872 870 867 864 862 859 856 854

66 851 849 846 844 841 838 836 833 831 828

67 826 824 821 819 816 814 811 809 807 804

68 802 800 797 795 793 790 788 786 783 781

69 779 777 774 772 770 768 765 763 761 759

70 757 755 752 750 748 746 744 742 740 738

71 736 734 731 729 727 725 723 721 719 717

72 715 713 711 709 707 705 704 702 700 698

73 696 694 692 690 688 686 685 683 681 679

74 677 675 673 672 670 668 666 665 663 661

75 659 657 656 654 652 650 649 647 645 644

76 642 640 639 637 635 634 632 630 629 627

77 625 624 622 621 619 617 616 614 613 611

78 609 608 606 605 603 602 600 599 597 596

79 594 593 591 590 588 587 585 584 582 581

80 579 578 576 575 574 572 571 569 568 567

81 565 564 562 561 560 558 557 556 554 553

82 551 550 549 547 546 545 543 542 541 540

83 538 537 536 534 533 532 531 529 528 527

84 526 524 523 522 521 519 518 517 516 514

85 513 512 511 510 508 507 506 505 504 503

86 501 500 499 498 497 496 494 493 492 491

87 490 489 488 487 485 484 483 482 481 480

88 479 478 477 476 474 473 472 471 470 469

89 468 467 466 465 464 463 462 461 460 459

90 458 457 456 455 454 453 452 451 450 449

91 448 447 446 445 444 443 442 441 440 439

92 438 437 436 435 434 433 432 431 431 430

93 429 428 427 426 425 424 423 422 421 421

23

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L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

94 420 419 418 417 416 415 414 413 413 412

95 411 410 409 408 407 407 406 405 404 403

96 402 402 401 400 399 398 397 397 396 395

97 394 393 392 392 391 390 389 388 388 387

98 386 385 385 384 383 382 381 381 380 379

99 378 378 377 376 375 375 374 373 372 372

100 371 370 369 369 368 367 366 366 365 364

101 363 363 362 361 361 360 359 359 358 357

102 356 356 355 354 354 353 352 352 351 350

103 350 349 348 347 347 346 345 345 344 343

104 343 342 342 341 340 340 339 338 338 337

105 336 336 335 334 334 333 333 332 331 331

106 330 329 329 328 328 327 326 326 325 324

107 324 323 323 322 321 321 320 320 319 318

108 318 317 317 316 316 315 314 314 313 313

109 312 312 311 310 310 309 309 308 308 307

110 306 306 305 305 304 304 303 303 302 301

111 301 300 300 299 299 298 298 297 297 296

112 296 295 295 294 293 293 292 292 291 291

113 290 290 289 289 288 288 287 287 286 286

114 285 285 284 284 283 283 282 282 281 281

115 280 280 279 279 278 278 277 277 277 276

116 276 275 275 274 274 273 273 272 272 271

117 271 270 270 269 269 269 268 268 267 267

118 266 266 265 265 265 264 264 263 263 262

119 262 261 261 261 260 260 259 259 258 258

120 258 257 257 256 256 255 255 255 254 254

121 253 253 252 252 252 251 251 250 250 250

122 249 249 248 248 248 247 247 246 246 245

123 245 245 244 244 244 243 243 242 242 242

124 241 241 240 240 240 239 239 238 238 238

125 237 237 237 236 236 235 235 235 234 234

126 234 233 233 232 232 232 231 231 231 230

127 230 230 229 229 228 228 228 227 227 227

128 226 226 226 225 225 225 224 224 224 223

129 223 222 222 222 221 221 221 220 220 220

130 219 219 219 218 218 218 217 217 217 216

131 216 216 215 215 215 214 214 214 213 213

132 213 212 212 212 212 211 211 211 210 210

133 210 209 209 209 208 208 208 207 207 207

134 207 206 206 206 205 205 205 204 204 204

135 203 203 203 203 202 202 202 201 201 201

136 200 200 200 200 199 199 199 198 198 198

137 198 197 197 197 196 196 196 196 195 195

138 195 194 194 194 194 193 193 193 192 192

24

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L o a d 2 0 0 0 g f ( 2 k g f )

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

139 192 192 191 191 191 191 190 190 190 189

140 189 189 189 188 188 188 188 187 187 187

141 187 186 186 186 185 185 185 185 184 184

142 184 184 183 183 183 183 182 182 182 182

143 181 181 181 181 180 180 180 180 179 179

144 179 179 178 178 178 178 177 177 177 177

145 176 176 176 176 175 175 175 175 174 174

146 174 174 173 173 173 173 173 172 172 172

147 172 171 171 171 171 170 170 170 170 170

148 169 169 169 169 168 168 168 168 167 167

149 167 167 167 166 166 166 166 165 165 165

150 165 165 164 164 164 164 163 163 163 163

151 163 162 162 162 162 162 161 161 161 161

152 160 160 160 160 160 159 159 159 159 159

153 158 158 158 158 158 157 157 157 157 157

154 156 156 156 156 156 155 155 155 155 155

155 154 154 154 154 154 153 153 153 153 153

156 152 152 152 152 152 151 151 151 151 151

157 150 150 150 150 150 149 149 149 149 149

158 149 148 148 148 148 148 147 147 147 147

159 147 146 146 146 146 146 146 145 145 145

160 145 145 144 144 144 144 144 144 143 143

161 143 143 143 143 142 142 142 142 142 141

162 141 141 141 141 141 140 140 140 140 140

163 140 139 139 139 139 139 139 138 138 138

164 138 138 138 137 137 137 137 137 137 136

165 136 136 136 136 136 135 135 135 135 135

166 135 134 134 134 134 134 134 133 133 133

167 133 133 133 132 132 132 132 132 132 132

168 131 131 131 131 131 131 130 130 130 130

169 130 130 130 129 129 129 129 129 129 128

170 128 128 128 128 128 128 127 127 127 127

171 127 127 127 126 126 126 126 126 126 125

172 125 125 125 125 125 125 124 124 124 124

173 124 124 124 123 123 123 123 123 123 123

174 122 122 122 122 122 122 122 121 121 121

175 121 121 121 121 121 120 120 120 120 120

176 120 120 119 119 119 119 119 119 119 118

177 118 118 118 118 118 118 118 117 117 117

178 117 117 117 117 117 116 116 116 116 116

179 116 116 115 115 115 115 115 115 115 115

180 114 114 114 114 114 114 114 114 113 113

181 113 113 113 113 113 113 112 112 112 112

182 112 112 112 112 111 111 111 111 111 111

183 111 111 110 110 110 110 110 110 110 110

25

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Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

184 110 109 109 109 109 109 109 109 109 108

185 108 108 108 108 108 108 108 108 107 107

186 107 107 107 107 107 107 106 106 106 106

187 106 106 106 106 106 105 105 105 105 105

188 105 105 105 105 104 104 104 104 104 104

189 104 104 104 103 103 103 103 103 103 103

190 103 103 102 102 102 102 102 102 102 102

191 102 102 101 101 101 101 101 101 101 101

192 101 100 100 100 100 100 100 99.9 99.8 99.6

193 99.5 99.4 99.3 99.2 99.1 99.0 98.9 98.8 98.7 98.6

194 98.5 98.4 98.3 98.2 98.1 98.0 97.9 97.8 97.7 97.6

195 97.5 97.4 97.3 97.2 97.1 97.0 96.9 96.8 96.7 96.6

196 96.5 96.4 96.3 96.2 96.1 96.0 95.9 95.8 95.7 95.6

197 95.5 95.4 95.4 95.3 95.2 95.1 95.0 94.9 94.8 94.7

198 94.6 94.5 94.4 94.3 94.2 94.1 94.0 93.9 93.8 93.7

199 93.6 93.5 93.4 93.4 93.3 93.2 93.1 93.0 92.9 92.8

200 92.7 92.6 92.5 92.4 92.3 92.2 92.1 92.1 92.0 91.9

201 91.8 91.7 91.6 91.5 91.4 91.3 91.2 91.1 91.1 91.0

202 90.9 90.8 90.7 90.6 90.5 90.4 90.3 90.2 90.2 90.1

203 90.0 89.9 89.8 89.7 89.6 89.5 89.5 89.4 89.3 89.2

204 89.1 89.0 88.9 88.8 88.8 88.7 88.6 88.5 88.4 88.3

205 88.2 88.1 88.1 88.0 87.9 87.8 87.7 87.6 87.5 87.5

206 87.4 87.3 87.2 87.1 87.0 87.0 86.9 86.8 86.7 86.6

207 86.5 86.5 86.4 86.3 86.2 86.1 86.0 86.0 85.9 85.8

208 85.7 85.6 85.5 85.5 85.4 85.3 85.2 85.1 85.1 85.0

209 84.9 84.8 84.7 84.6 84.6 84.5 84.4 84.3 84.2 84.2

210 84.1 84.0 83.9 83.8 83.8 83.7 83.6 83.5 83.4 83.4

211 83.3 83.2 83.1 83.1 83.0 82.9 82.8 82.7 82.7 82.6

212 82.5 82.4 82.3 82.3 82.2 82.1 82.0 82.0 81.9 81.8

213 81.7 81.7 81.6 81.5 81.4 81.3 81.3 81.2 81.1 81.0

214 81.0 80.9 80.8 80.7 80.7 80.6 80.5 80.4 80.4 80.3

215 80.2 80.1 80.1 80.0 79.9 79.8 79.8 79.7 79.6 79.5

216 79.5 79.4 79.3 79.3 79.2 79.1 79.0 79.0 78.9 78.8

217 78.7 78.7 78.6 78.5 78.5 78.4 78.3 78.2 78.2 78.1

218 78.0 78.0 77.9 77.8 77.7 77.7 77.6 77.5 77.5 77.4

219 77.3 77.2 77.2 77.1 77.0 77.0 76.9 76.8 76.8 76.7

220 76.6 76.5 76.5 76.4 76.3 76.3 76.2 76.1 76.1 76.0

221 75.9 75.9 75.8 75.7 75.6 75.6 75.5 75.4 75.4 75.3

222 75.2 75.2 75.1 75.0 75.0 74.9 74.8 74.8 74.7 74.6

223 74.6 74.5 74.4 74.4 74.3 74.2 74.2 74.1 74.0 74.0

224 73.9 73.8 73.8 73.7 73.6 73.6 73.5 73.4 73.4 73.3

225 73.2 73.2 73.1 73.0 73.0 72.9 72.9 72.8 72.7 72.7

226 72.6 72.5 72.5 72.4 72.3 72.3 72.2 72.2 72.1 72.0

227 72.0 71.9 71.8 71.8 71.7 71.6 71.6 71.5 71.5 71.4

228 71.3 71.3 71.2 71.1 71.1 71.0 71.0 70.9 70.8 70.8

26

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Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

229 70.7 70.6 70.6 70.5 70.5 70.4 70.3 70.3 70.2 70.2

230 70.1 70.0 70.0 69.9 69.9 69.8 69.7 69.7 69.6 69.5

231 69.5 69.4 69.4 69.3 69.2 69.2 69.1 69.1 69.0 69.0

232 68.9 68.8 68.8 68.7 68.7 68.6 68.5 68.5 68.4 68.4

233 68.3 68.2 68.2 68.1 68.1 68.0 68.0 67.9 67.8 67.8

234 67.7 67.7 67.6 67.5 67.5 67.4 67.4 67.3 67.3 67.2

235 67.1 67.1 67.0 67.0 66.9 66.9 66.8 66.7 66.7 66.6

236 66.6 66.5 66.5 66.4 66.4 66.3 66.2 66.2 66.1 66.1

237 66.0 66.0 65.9 65.8 65.8 65.7 65.7 65.6 65.6 65.5

238 65.5 65.4 65.4 65.3 65.2 65.2 65.1 65.1 65.0 65.0

239 64.9 64.9 64.8 64.8 64.7 64.6 64.6 64.5 64.5 64.4

240 64.4 64.3 64.3 64.2 64.2 64.1 64.1 64.0 63.9 63.9

241 63.8 63.8 63.7 63.7 63.6 63.6 63.5 63.5 63.4 63.4

242 63.3 63.3 63.2 63.2 63.1 63.1 63.0 63.0 62.9 62.8

243 62.8 62.7 62.7 62.6 62.6 62.5 62.5 62.4 62.4 62.3

244 62.3 62.2 62.2 62.1 62.1 62.0 62.0 61.9 61.9 61.8

245 61.8 61.7 61.7 61.6 61.6 61.5 61.5 61.4 61.4 61.3

246 61.3 61.2 61.2 61.1 61.1 61.0 61.0 60.9 60.9 60.8

247 60.8 60.7 60.7 60.6 60.6 60.5 60.5 60.4 60.4 60.3

248 60.3 60.2 60.2 60.1 60.1 60.0 60.0 59.9 59.9 59.9

249 59.8 59.8 59.7 59.7 59.6 59.6 59.5 59.5 59.4 59.4

250 59.3 59.3 59.2 59.2 59.1 59.1 59.0 59.0 59.0 58.9

251 58.9 58.8 58.8 58.7 58.7 58.6 58.6 58.5 58.5 58.4

252 58.4 58.3 58.3 58.3 58.2 58.2 58.1 58.1 58.0 58.0

253 57.9 57.9 57.8 57.8 57.7 57.7 57.7 57.6 57.6 57.5

254 57.5 57.4 57.4 57.3 57.3 57.2 57.2 57.2 57.1 57.1

255 57.0 57.0 56.9 56.9 56.8 56.8 56.8 56.7 56.7 56.6

256 56.6 56.5 56.5 56.4 56.4 56.4 56.3 56.3 56.2 56.2

257 56.1 56.1 56.1 56.0 56.0 55.9 55.9 55.8 55.8 55.7

258 55.7 55.7 55.6 55.6 55.5 55.5 55.4 55.4 55.4 55.3

259 55.3 55.2 55.2 55.1 55.1 55.1 55.0 55.0 54.9 54.9

260 54.9 54.8 54.8 54.7 54.7 54.6 54.6 54.6 54.5 54.5

261 54.4 54.4 54.3 54.3 54.3 54.2 54.2 54.1 54.1 54.1

262 54.0 54.0 53.9 53.9 53.9 53.8 53.8 53.7 53.7 53.6

263 53.6 53.6 53.5 53.5 53.4 53.4 53.4 53.3 53.3 53.2

264 53.2 53.2 53.1 53.1 53.0 53.0 53.0 52.9 52.9 52.8

265 52.8 52.8 52.7 52.7 52.6 52.6 52.6 52.5 52.5 52.4

266 52.4 52.4 52.3 52.3 52.2 52.2 52.2 52.1 52.1 52.1

267 52.0 52.0 51.9 51.9 51.9 51.8 51.8 51.7 51.7 51.7

268 51.6 51.6 51.5 51.5 51.5 51.4 51.4 51.4 51.3 51.3

269 51.2 51.2 51.2 51.1 51.1 51.1 51.0 51.0 50.9 50.9

270 50.9 50.8 50.8 50.8 50.7 50.7 50.6 50.6 50.6 50.5

271 50.5 50.5 50.4 50.4 50.3 50.3 50.3 50.2 50.2 50.2

272 50.1 50.1 50.0 50.0 50.0 49.9 49.9 49.9 49.8 49.8

273 49.8 49.7 49.7 49.6 49.6 49.6 49.5 49.5 49.5 49.4

27

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Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

274 49.4 49.4 49.3 49.3 49.2 49.2 49.2 49.1 49.1 49.1

275 49.0 49.0 49.0 48.9 48.9 48.9 48.8 48.8 48.7 48.7

276 48.7 48.6 48.6 48.6 48.5 48.5 48.5 48.4 48.4 48.4

277 48.3 48.3 48.3 48.2 48.2 48.2 48.1 48.1 48.0 48.0

278 48.0 47.9 47.9 47.9 47.8 47.8 47.8 47.7 47.7 47.7

279 47.6 47.6 47.6 47.5 47.5 47.5 47.4 47.4 47.4 47.3

280 47.3 47.3 47.2 47.2 47.2 47.1 47.1 47.1 47.0 47.0

281 47.0 46.9 46.9 46.9 46.8 46.8 46.8 46.7 46.7 46.7

282 46.6 46.6 46.6 46.5 46.5 46.5 46.4 46.4 46.4 46.3

283 46.3 46.3 46.2 46.2 46.2 46.1 46.1 46.1 46.0 46.0

284 46.0 45.9 45.9 45.9 45.8 45.8 45.8 45.7 45.7 45.7

285 45.7 45.6 45.6 45.6 45.5 45.5 45.5 45.4 45.4 45.4

286 45.3 45.3 45.3 45.2 45.2 45.2 45.1 45.1 45.1 45.0

287 45.0 45.0 45.0 44.9 44.9 44.9 44.8 44.8 44.8 44.7

288 44.7 44.7 44.6 44.6 44.6 44.6 44.5 44.5 44.5 44.4

289 44.4 44.4 44.3 44.3 44.3 44.2 44.2 44.2 44.2 44.1

290 44.1 44.1 44.0 44.0 44.0 43.9 43.9 43.9 43.8 43.8

291 43.8 43.8 43.7 43.7 43.7 43.6 43.6 43.6 43.5 43.5

292 43.5 43.5 43.4 43.4 43.4 43.3 43.3 43.3 43.3 43.2

293 43.2 43.2 43.1 43.1 43.1 43.0 43.0 43.0 43.0 42.9

294 42.9 42.9 42.8 42.8 42.8 42.8 42.7 42.7 42.7 42.6

295 42.6 42.6 42.6 42.5 42.5 42.5 42.4 42.4 42.4 42.3

296 42.3 42.3 42.3 42.2 42.2 42.2 42.1 42.1 42.1 42.1

297 42.0 42.0 42.0 42.0 41.9 41.9 41.9 41.8 41.8 41.8

298 41.8 41.7 41.7 41.7 41.6 41.6 41.6 41.6 41.5 41.5

299 41.5 41.4 41.4 41.4 41.4 41.3 41.3 41.3 41.3 41.2

300 41.2 41.2 41.1 41.1 41.1 41.1 41.0 41.0 41.0 41.0

301 40.9 40.9 40.9 40.8 40.8 40.8 40.8 40.7 40.7 40.7

302 40.7 40.6 40.6 40.6 40.5 40.5 40.5 40.5 40.4 40.4

303 40.4 40.4 40.3 40.3 40.3 40.3 40.2 40.2 40.2 40.1

304 40.1 40.1 40.1 40.0 40.0 40.0 40.0 39.9 39.9 39.9

305 39.9 39.8 39.8 39.8 39.8 39.7 39.7 39.7 39.7 39.6

306 39.6 39.6 39.5 39.5 39.5 39.5 39.4 39.4 39.4 39.4

307 39.3 39.3 39.3 39.3 39.2 39.2 39.2 39.2 39.1 39.1

308 39.1 39.1 39.0 39.0 39.0 39.0 38.9 38.9 38.9 38.9

309 38.8 38.8 38.8 38.8 38.7 38.7 38.7 38.7 38.6 38.6

310 38.6 38.6 38.5 38.5 38.5 38.5 38.4 38.4 38.4 38.4

311 38.3 38.3 38.3 38.3 38.2 38.2 38.2 38.2 38.1 38.1

312 38.1 38.1 38.0 38.0 38.0 38.0 37.9 37.9 37.9 37.9

313 37.8 37.8 37.8 37.8 37.8 37.7 37.7 37.7 37.7 37.6

314 37.6 37.6 37.6 37.5 37.5 37.5 37.5 37.4 37.4 37.4

315 37.4 37.3 37.3 37.3 37.3 37.3 37.2 37.2 37.2 37.2

316 37.1 37.1 37.1 37.1 37.0 37.0 37.0 37.0 36.9 36.9

317 36.9 36.9 36.9 36.8 36.8 36.8 36.8 36.7 36.7 36.7

318 36.7 36.6 36.6 36.6 36.6 36.6 36.5 36.5 36.5 36.5

28

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L o a d 5 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

70 1892 1839 1788 1740 1693 1648 1605 1564 1524 1485

80 1448 1413 1379 1346 1314 1283 1253 1225 1197 1170

90 1144 1119 1095 1072 1049 1027 1006 985 965 946

100 927 909 891 874 857 841 825 810 795 780

110 766 752 739 726 713 701 689 677 666 655

120 644 633 623 613 603 593 584 575 566 557

130 549 540 532 524 516 509 501 494 487 480

140 473 466 460 453 447 441 435 429 423 418

150 412 407 401 396 391 386 381 376 371 367

160 362 358 353 349 345 340 336 332 328 325

170 321 317 313 310 306 303 299 296 293 289

180 286 283 280 277 274 271 268 265 262 260

190 257 254 251 249 246 244 241 239 236 234

200 232 229 227 225 223 221 218 216 214 212

210 210 208 206 204 202 201 199 197 195 193

220 192 190 188 186 185 183 181 180 178 177

230 175 174 172 171 169 168 166 165 164 162

240 161 160 158 157 156 154 153 152 151 150

250 148 147 146 145 144 143 141 140 139 138

260 137 136 135 134 133 132 131 130 129 128

270 127 126 125 124 123 123 122 121 120 119

280 118 117 117 116 115 114 113 113 112 111

290 110 109 109 108 107 107 106 105 104 104

300 103 102 102 101 100 99.7 99.0 98.4 97.7 97.1

310 96.5 95.8 95.2 94.6 94.0 93.4 92.8 92.2 91.7 91.1

320 90.5 90.0 89.4 88.9 88.3 87.8 87.2 86.7 86.2 85.6

330 85.1 84.6 84.1 83.6 83.1 82.6 82.1 81.6 81.1 80.7

340 80.2 79.7 79.3 78.8 78.3 77.9 77.4 77.0 76.5 76.1

350 75.7 75.2 74.8 74.4 74.0 73.6 73.1 72.7 72.3 71.9

360 71.5 71.1 70.7 70.4 70.0 69.6 69.2 68.8 68.5 68.1

370 67.7 67.3 67.0 66.6 66.3 65.9 65.6 65.2 64.9 64.5

380 64.2 63.9 63.5 63.2 62.9 62.5 62.2 61.9 61.6 61.3

390 60.9 60.6 60.3 60.0 59.7 59.4 59.1 58.8 58.5 58.2

400 57.9 57.6 57.4 57.1 56.8 56.5 56.2 56.0 55.7 55.4

410 55.1 54.9 54.6 54.3 54.1 53.8 53.6 53.3 53.1 52.8

420 52.6 52.3 52.1 51.8 51.6 51.3 51.1 50.8 50.6 50.4

430 50.1 49.9 49.7 49.4 49.2 49.0 48.8 48.5 48.3 48.1

440 47.9 47.7 47.4 47.2 47.0 46.8 46.6 46.4 46.2 46.0

450 45.8 45.6 45.4 45.2 45.0 44.8 44.6 44.4 44.2 44.0

460 43.8 43.6 43.4 43.2 43.1 42.9 42.7 42.5 42.3 42.1

470 42.0 41.8 41.6 41.4 41.3 41.1 40.9 40.7 40.6 40.4

480 40.2 40.1 39.9 39.7 39.6 39.4 39.2 39.1 38.9 38.8

490 38.6 38.5 38.3 38.1 38.0 37.8 37.7 37.5 37.4 37.2

500 37.1 36.9 36.8 36.6 36.5 36.3 36.2 36.1 35.9 35.8

510 35.6 35.5 35.4 35.2 35.1 35.0 34.8 34.7 34.5 34.4

29

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L o a d 5 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

520 34.3 34.2 34.0 33.9 33.8 33.6 33.5 33.4 33.3 33.1

530 33.0 32.9 32.8 32.6 32.5 32.4 32.3 32.1 32.0 31.9

540 31.8 31.7 31.6 31.4 31.3 31.2 31.1 31.0 30.9 30.8

550 30.6 30.5 30.4 30.3 30.2 30.1 30.0 29.9 29.8 29.7

560 29.6 29.5 29.3 29.2 29.1 29.0 28.9 28.8 28.7 28.6

570 28.5 28.4 28.3 28.2 28.1 28.0 27.9 27.8 27.7 27.7

580 27.6 27.5 27.4 27.3 27.2 27.1 27.0 26.9 26.8 26.7

590 26.6 26.5 26.5 26.4 26.3 26.2 26.1 26.0 25.9 25.8

600 25.8 25.7 25.6 25.5 25.4 25.3 25.2 25.2 25.1 25.0

610 24.9 24.8 24.8 24.7 24.6 24.5 24.4 24.4 24.3 24.2

620 24.1 24.0 24.0 23.9 23.8 23.7 23.7 23.6 23.5 23.4

630 23.4 23.3 23.2 23.1 23.1 23.0 22.9 22.8 22.8 22.7

640 22.6 22.6 22.5 22.4 22.4 22.3 22.2 22.1 22.1 22.0

650 21.9 21.9 21.8 21.7 21.7 21.6 21.5 21.5 21.4 21.3

660 21.3 21.2 21.2 21.1 21.0 21.0 20.9 20.8 20.8 20.7

670 20.7 20.6 20.5 20.5 20.4 20.3 20.3 20.2 20.2 20.1

680 20.0 20.0 19.9 19.9 19.8 19.8 19.7 19.6 19.6 19.5

690 19.5 19.4 19.4 19.3 19.2 19.2 19.1 19.1 19.0 19.0

700 18.9 18.9 18.8 18.8 18.7 18.7 18.6 18.5 18.5 18.4

710 18.4 18.3 18.3 18.2 18.2 18.1 18.1 18.0 18.0 17.9

720 17.9 17.8 17.8 17.7 17.7 17.6 17.6 17.5 17.5 17.4

730 17.4 17.3 17.3 17.3 17.2 17.2 17.1 17.1 17.0 17.0

740 16.9 16.9 16.8 16.8 16.7 16.7 16.7 16.6 16.6 16.5

750 16.5 16.4 16.4 16.3 16.3 16.3 16.2 16.2 16.1 16.1

760 16.0 16.0 16.0 15.9 15.9 15.8 15.8 15.8 15.7 15.7

770 15.6 15.6 15.6 15.5 15.5 15.4 15.4 15.4 15.3 15.3

780 15.2 15.2 15.2 15.1 15.1 15.0 15.0 15.0 14.9 14.9

790 14.9 14.8 14.8 14.7 14.7 14.7 14.6 14.6 14.6 14.5

800 14.5 14.4 14.4 14.4 14.3 14.3 14.3 14.2 14.2 14.2

810 14.1 14.1 14.1 14.0 14.0 14.0 13.9 13.9 13.9 13.8

820 13.8 13.8 13.7 13.7 13.7 13.6 13.6 13.6 13.5 13.5

830 13.5 13.4 13.4 13.4 13.3 13.3 13.3 13.2 13.2 13.2

840 13.1 13.1 13.1 13.0 13.0 13.0 13.0 12.9 12.9 12.9

850 12.8 12.8 12.8 12.7 12.7 12.7 12.7 12.6 12.6 12.6

860 12.5 12.5 12.5 12.4 12.4 12.4 12.4 12.3 12.3 12.3

870 12.2 12.2 12.2 12.2 12.1 12.1 12.1 12.1 12.0 12.0

880 12.0 11.9 11.9 11.9 11.9 11.8 11.8 11.8 11.8 11.7

890 11.7 11.7 11.7 11.6 11.6 11.6 11.5 11.5 11.5 11.5

900 11.4 11.4 11.4 11.4 11.3 11.3 11.3 11.3 11.2 11.2

910 11.2 11.2 11.1 11.1 11.1 11.1 11.0 11.0 11.0 11.0

920 11.0 10.9 10.9 10.9 10.9 10.8 10.8 10.8 10.8 10.7

930 10.7 10.7 10.7 10.6 10.6 10.6 10.6 10.6 10.5 10.5

30

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L o a d 1 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

100 1854 1817 1782 1748 1714 1682 1650 1619 1590 1560

110 1532 1505 1478 1452 1427 1402 1378 1354 1332 1309

120 1288 1266 1246 1225 1206 1187 1168 1149 1132 1114

130 1097 1080 1064 1048 1033 1017 1002 988 974 960

140 946 933 919 907 894 882 870 858 846 835

150 824 813 802 792 782 772 762 752 743 733

160 724 715 706 698 689 681 673 665 657 649

170 642 634 627 619 612 605 599 592 585 579

180 572 566 560 554 548 542 536 530 525 519

190 514 508 503 498 493 488 483 478 473 468

200 464 459 454 450 446 441 437 433 429 424

210 420 416 413 409 405 401 397 394 390 387

220 383 380 376 373 369 366 363 360 357 354

230 350 347 344 342 339 336 333 330 327 325

240 322 319 317 314 311 309 306 304 301 299

250 297 294 292 290 287 285 283 281 279 276

260 274 272 270 268 266 264 262 260 258 256

270 254 252 251 249 247 245 243 242 240 238

280 236 235 233 231 230 228 227 225 224 222

290 220 219 217 216 214 213 212 210 209 207

300 206 205 203 202 201 199 198 197 195 194

310 193 192 190 189 188 187 186 184 183 182

320 181 180 179 178 177 176 174 173 172 171

330 170 169 168 167 166 165 164 163 162 161

340 160 159 159 158 157 156 155 154 153 152

350 151 150 150 149 148 147 146 145 145 144

360 143 142 141 141 140 139 138 138 137 136

370 135 135 134 133 133 132 131 130 130 129

380 128 128 127 126 126 125 124 124 123 123

390 122 121 121 120 119 119 118 118 117 116

400 116 115 115 114 114 113 112 112 111 111

410 110 110 109 109 108 108 107 107 106 106

420 105 105 104 104 103 103 102 102 101 101

430 100 99.8 99.3 98.9 98.4 98.0 97.5 97.1 96.6 96.2

440 95.8 95.3 94.9 94.5 94.0 93.6 93.2 92.8 92.4 92.0

450 91.6 91.1 90.7 90.3 89.9 89.6 89.2 88.8 88.4 88.0

460 87.6 87.2 86.9 86.5 86.1 85.7 85.4 85.0 84.6 84.3

470 83.9 83.6 83.2 82.9 82.5 82.2 81.8 81.5 81.1 80.8

480 80.5 80.1 79.8 79.5 79.1 78.8 78.5 78.2 77.9 77.5

490 77.2 76.9 76.6 76.3 76.0 75.7 75.4 75.1 74.8 74.5

500 74.2 73.9 73.6 73.3 73.0 72.7 72.4 72.1 71.8 71.6

510 71.3 71.0 70.7 70.4 70.2 69.9 69.6 69.4 69.1 68.8

520 68.6 68.3 68.0 67.8 67.5 67.3 67.0 66.8 66.5 66.3

530 66.0 65.8 65.5 65.3 65.0 64.8 64.5 64.3 64.1 63.8

540 63.6 63.3 63.1 62.9 62.6 62.4 62.2 62.0 61.7 61.5

550 61.3 61.1 60.8 60.6 60.4 60.2 60.0 59.8 59.5 59.3

31

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L o a d 1 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

560 59.1 58.9 58.7 58.5 58.3 58.1 57.9 57.7 57.5 57.3

570 57.1 56.9 56.7 56.5 56.3 56.1 55.9 55.7 55.5 55.3

580 55.1 54.9 54.7 54.5 54.4 54.2 54.0 53.8 53.6 53.4

590 53.3 53.1 52.9 52.7 52.5 52.4 52.2 52.0 51.8 51.7

600 51.5 51.3 51.2 51.0 50.8 50.7 50.5 50.3 50.2 50.0

610 49.8 49.7 49.5 49.3 49.2 49.0 48.9 48.7 48.5 48.4

620 48.2 48.1 47.9 47.8 47.6 47.5 47.3 47.2 47.0 46.9

630 46.7 46.6 46.4 46.3 46.1 46.0 45.8 45.7 45.5 45.4

640 45.3 45.1 45.0 44.8 44.7 44.6 44.4 44.3 44.2 44.0

650 43.9 43.7 43.6 43.5 43.3 43.2 43.1 43.0 42.8 42.7

660 42.6 42.4 42.3 42.2 42.1 41.9 41.8 41.7 41.5 41.4

670 41.3 41.2 41.1 40.9 40.8 40.7 40.6 40.5 40.3 40.2

680 40.1 40.0 39.9 39.7 39.6 39.5 39.4 39.3 39.2 39.1

690 38.9 38.8 38.7 38.6 38.5 38.4 38.3 38.2 38.1 37.9

700 37.8 37.7 37.6 37.5 37.4 37.3 37.2 37.1 37.0 36.9

710 36.8 36.7 36.6 36.5 36.4 36.3 36.2 36.1 36.0 35.9

720 35.8 35.7 35.6 35.5 35.4 35.3 35.2 35.1 35.0 34.9

730 34.8 34.7 34.6 34.5 34.4 34.3 34.2 34.1 34.0 33.9

740 33.9 33.8 33.7 33.6 33.5 33.4 33.3 33.2 33.1 33.0

750 33.0 32.9 32.8 32.7 32.6 32.5 32.4 32.4 32.3 32.2

760 32.1 32.0 31.9 31.8 31.8 31.7 31.6 31.5 31.4 31.4

770 31.3 31.2 31.1 31.0 30.9 30.9 30.8 30.7 30.6 30.6

780 30.5 30.4 30.3 30.2 30.2 30.1 30.0 29.9 29.9 29.8

790 29.7 29.6 29.6 29.5 29.4 29.3 29.3 29.2 29.1 29.0

800 29.0 28.9 28.8 28.8 28.7 28.6 28.5 28.5 28.4 28.3

810 28.3 28.2 28.1 28.0 28.0 27.9 27.8 27.8 27.7 27.6

820 27.6 27.5 27.4 27.4 27.3 27.2 27.2 27.1 27.0 27.0

830 26.9 26.8 26.8 26.7 26.7 26.6 26.5 26.5 26.4 26.3

840 26.3 26.2 26.2 26.1 26.0 26.0 25.9 25.8 25.8 25.7

850 25.7 25.6 25.5 25.5 25.4 25.4 25.3 25.2 25.2 25.1

860 25.1 25.0 25.0 24.9 24.8 24.8 24.7 24.7 24.6 24.6

870 24.5 24.4 24.4 24.3 24.3 24.2 24.2 24.1 24.1 24.0

880 23.9 23.9 23.8 23.8 23.7 23.7 23.6 23.6 23.5 23.5

890 23.4 23.4 23.3 23.2 23.2 23.1 23.1 23.0 23.0 22.9

900 22.9 22.8 22.8 22.7 22.7 22.6 22.6 22.5 22.5 22.4

910 22.4 22.3 22.3 22.2 22.2 22.1 22.1 22.0 22.0 22.0

920 21.9 21.9 21.8 21.8 21.7 21.7 21.6 21.6 21.5 21.5

930 21.4 21.4 21.3 21.3 21.3 21.2 21.2 21.1 21.1 21.0

940 21.0 20.9 20.9 20.8 20.8 20.8 20.7 20.7 20.6 20.6

950 20.5 20.5 20.5 20.4 20.4 20.3 20.3 20.2 20.2 20.2

960 20.1 20.1 20.0 20.0 20.0 19.9 19.9 19.8 19.8 19.7

970 19.7 19.7 19.6 19.6 19.5 19.5 19.5 19.4 19.4 19.3

980 19.3 19.3 19.2 19.2 19.1 19.1 19.1 19.0 19.0 19.0

990 18.9 18.9 18.8 18.8 18.8 18.7 18.7 18.7 18.6 18.6

32

Page 91: Hardness Conversion Tables

L o a d 2 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

130 2194 2161 2128 2096 2065 2035 2005 1976 1947 1919

140 1892 1865 1839 1813 1788 1764 1740 1716 1693 1670

150 1648 1626 1605 1584 1564 1543 1524 1504 1485 1467

160 1448 1431 1413 1396 1379 1362 1346 1330 1314 1298

170 1283 1268 1253 1239 1225 1211 1197 1184 1170 1157

180 1144 1132 1119 1107 1095 1083 1072 1060 1049 1038

190 1027 1016 1006 995 985 975 965 955 946 936

200 927 918 909 900 891 882 874 865 857 849

210 841 833 825 817 810 802 795 787 780 773

220 766 759 752 746 739 732 726 720 713 707

230 701 695 689 683 677 671 666 660 655 649

240 644 638 633 628 623 618 613 608 603 598

250 593 589 584 579 575 570 566 561 557 553

260 549 544 540 536 532 528 524 520 516 512

270 509 505 501 498 494 490 487 483 480 476

280 473 470 466 463 460 457 453 450 447 444

290 441 438 435 432 429 426 423 420 418 415

300 412 409 407 404 401 399 396 393 391 388

310 386 383 381 378 376 374 371 369 367 364

320 362 360 358 355 353 351 349 347 345 343

330 340 338 336 334 332 330 328 326 325 323

340 321 319 317 315 313 312 310 308 306 304

350 303 301 299 298 296 294 293 291 289 288

360 286 285 283 281 280 278 277 275 274 272

370 271 269 268 267 265 264 262 261 260 258

380 257 255 254 253 251 250 249 248 246 245

390 244 243 241 240 239 238 236 235 234 233

400 232 231 229 228 227 226 225 224 223 222

410 221 220 218 217 216 215 214 213 212 211

420 210 209 208 207 206 205 204 203 202 201

430 201 200 199 198 197 196 195 194 193 192

440 192 191 190 189 188 187 186 186 185 184

450 183 182 181 181 180 179 178 178 177 176

460 175 174 174 173 172 171 171 170 169 169

470 168 167 166 166 165 164 164 163 162 162

480 161 160 160 159 158 158 157 156 156 155

490 154 154 153 153 152 151 151 150 150 149

500 148 148 147 147 146 145 145 144 144 143

510 143 142 141 141 140 140 139 139 138 138

520 137 137 136 136 135 135 134 134 133 133

530 132 132 131 131 130 130 129 129 128 128

540 127 127 126 126 125 125 124 124 123 123

550 123 122 122 121 121 120 120 120 119 119

560 118 118 117 117 117 116 116 115 115 115

570 114 114 113 113 113 112 112 111 111 111

33

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L o a d 2 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

580 110 110 109 109 109 108 108 108 107 107

590 107 106 106 105 105 105 104 104 104 103

600 103 103 102 102 102 101 101 101 100 100

610 99.7 99.3 99.0 98.7 98.4 98.0 97.7 97.4 97.1 96.8

620 96.5 96.2 95.8 95.5 95.2 94.9 94.6 94.3 94.0 93.7

630 93.4 93.1 92.8 92.5 92.2 92.0 91.7 91.4 91.1 90.8

640 90.5 90.2 90.0 89.7 89.4 89.1 88.9 88.6 88.3 88.0

650 87.8 87.5 87.2 87.0 86.7 86.4 86.2 85.9 85.6 85.4

660 85.1 84.9 84.6 84.4 84.1 83.8 83.6 83.3 83.1 82.8

670 82.6 82.4 82.1 81.9 81.6 81.4 81.1 80.9 80.7 80.4

680 80.2 80.0 79.7 79.5 79.3 79.0 78.8 78.6 78.3 78.1

690 77.9 77.7 77.4 77.2 77.0 76.8 76.5 76.3 76.1 75.9

700 75.7 75.5 75.2 75.0 74.8 74.6 74.4 74.2 74.0 73.8

710 73.6 73.4 73.1 72.9 72.7 72.5 72.3 72.1 71.9 71.7

720 71.5 71.3 71.1 70.9 70.7 70.5 70.4 70.2 70.0 69.8

730 69.6 69.4 69.2 69.0 68.8 68.6 68.5 68.3 68.1 67.9

740 67.7 67.5 67.3 67.2 67.0 66.8 66.6 66.5 66.3 66.1

750 65.9 65.7 65.6 65.4 65.2 65.0 64.9 64.7 64.5 64.4

760 64.2 64.0 63.9 63.7 63.5 63.4 63.2 63.0 62.9 62.7

770 62.5 62.4 62.2 62.1 61.9 61.7 61.6 61.4 61.3 61.1

780 60.9 60.8 60.6 60.5 60.3 60.2 60.0 59.9 59.7 59.6

790 59.4 59.3 59.1 59.0 58.8 58.7 58.5 58.4 58.2 58.1

800 57.9 57.8 57.6 57.5 57.4 57.2 57.1 56.9 56.8 56.7

810 56.5 56.4 56.2 56.1 56.0 55.8 55.7 55.6 55.4 55.3

820 55.1 55.0 54.9 54.7 54.6 54.5 54.3 54.2 54.1 54.0

830 53.8 53.7 53.6 53.4 53.3 53.2 53.1 52.9 52.8 52.7

840 52.6 52.4 52.3 52.2 52.1 51.9 51.8 51.7 51.6 51.4

850 51.3 51.2 51.1 51.0 50.8 50.7 50.6 50.5 50.4 50.3

860 50.1 50.0 49.9 49.8 49.7 49.6 49.4 49.3 49.2 49.1

870 49.0 48.9 48.8 48.7 48.5 48.4 48.3 48.2 48.1 48.0

880 47.9 47.8 47.7 47.6 47.4 47.3 47.2 47.1 47.0 46.9

890 46.8 46.7 46.6 46.5 46.4 46.3 46.2 46.1 46.0 45.9

900 45.8 45.7 45.6 45.5 45.4 45.3 45.2 45.1 45.0 44.9

910 44.8 44.7 44.6 44.5 44.4 44.3 44.2 44.1 44.0 43.9

920 43.8 43.7 43.6 43.5 43.4 43.3 43.2 43.1 43.1 43.0

930 42.9 42.8 42.7 42.6 42.5 42.4 42.3 42.2 42.1 42.1

940 42.0 41.9 41.8 41.7 41.6 41.5 41.4 41.3 41.3 41.2

950 41.1 41.0 40.9 40.8 40.7 40.7 40.6 40.5 40.4 40.3

960 40.2 40.2 40.1 40.0 39.9 39.8 39.7 39.7 39.6 39.5

970 39.4 39.3 39.2 39.2 39.1 39.0 38.9 38.8 38.8 38.7

980 38.6 38.5 38.5 38.4 38.3 38.2 38.1 38.1 38.0 37.9

990 37.8 37.8 37.7 37.6 37.5 37.5 37.4 37.3 37.2 37.2

34

Page 93: Hardness Conversion Tables

L o a d 3 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

160 2173 2146 2119 2093 2068 2043 2018 1994 1971 1947

170 1925 1902 1880 1858 1837 1816 1796 1775 1755 1736

180 1717 1698 1679 1661 1643 1625 1608 1591 1574 1557

190 1541 1525 1509 1493 1478 1463 1448 1433 1419 1405

200 1391 1377 1363 1350 1337 1323 1311 1298 1286 1273

210 1261 1249 1238 1226 1215 1203 1192 1181 1170 1160

220 1149 1139 1129 1118 1108 1099 1089 1079 1070 1061

230 1051 1042 1033 1025 1016 1007 999 990 982 974

240 966 958 950 942 934 927 919 912 904 897

250 890 883 876 869 862 855 849 842 836 829

260 823 816 810 804 798 792 786 780 774 769

270 763 757 752 746 741 735 730 725 720 715

280 709 704 699 694 690 685 680 675 671 666

290 661 657 652 648 643 639 635 631 626 622

300 618 614 610 606 602 598 594 590 586 583

310 579 575 571 568 564 561 557 553 550 547

320 543 540 536 533 530 527 523 520 517 514

330 511 508 505 502 499 496 493 490 487 484

340 481 478 476 473 470 467 465 462 459 457

350 454 451 449 446 444 441 439 436 434 432

360 429 427 424 422 420 417 415 413 411 408

370 406 404 402 400 398 396 393 391 389 387

380 385 383 381 379 377 375 373 371 369 368

390 366 364 362 360 358 356 355 353 351 349

400 348 346 344 342 341 339 337 336 334 332

410 331 329 328 326 325 323 321 320 318 317

420 315 314 312 311 309 308 306 305 304 302

430 301 299 298 297 295 294 293 291 290 289

440 287 286 285 283 282 281 280 278 277 276

450 275 273 272 271 270 269 267 266 265 264

460 263 262 261 259 258 257 256 255 254 253

470 252 251 250 249 248 247 245 244 243 242

480 241 240 239 238 237 236 235 235 234 233

490 232 231 230 229 228 227 226 225 224 223

500 222 222 221 220 219 218 217 216 216 215

510 214 213 212 211 211 210 209 208 207 206

520 206 205 204 203 203 202 201 200 200 199

530 198 197 197 196 195 194 194 193 192 191

540 191 190 189 189 188 187 187 186 185 185

550 184 183 183 182 181 181 180 179 179 178

560 177 177 176 175 175 174 174 173 172 172

570 171 171 170 169 169 168 168 167 166 166

580 165 165 164 164 163 163 162 161 161 160

590 160 159 159 158 158 157 157 156 156 155

600 155 154 153 153 152 152 151 151 150 150

35

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L o a d 3 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

610 149 149 149 148 148 147 147 146 146 145

620 145 144 144 143 143 142 142 141 141 141

630 140 140 139 139 138 138 138 137 137 136

640 136 135 135 135 134 134 133 133 132 132

650 132 131 131 130 130 130 129 129 128 128

660 128 127 127 127 126 126 125 125 125 124

670 124 124 123 123 122 122 122 121 121 121

680 120 120 120 119 119 119 118 118 118 117

690 117 116 116 116 115 115 115 114 114 114

700 114 113 113 113 112 112 112 111 111 111

710 110 110 110 109 109 109 108 108 108 108

720 107 107 107 106 106 106 106 105 105 105

730 104 104 104 104 103 103 103 102 102 102

740 102 101 101 101 100 100 99.9 99.7 99.4 99.1

750 98.9 98.6 98.4 98.1 97.8 97.6 97.3 97.1 96.8 96.5

760 96.3 96.0 95.8 95.5 95.3 95.0 94.8 94.5 94.3 94.1

770 93.8 93.6 93.3 93.1 92.8 92.6 92.4 92.1 91.9 91.7

780 91.4 91.2 91.0 90.7 90.5 90.3 90.0 89.8 89.6 89.3

790 89.1 88.9 88.7 88.4 88.2 88.0 87.8 87.6 87.3 87.1

800 86.9 86.7 86.5 86.3 86.0 85.8 85.6 85.4 85.2 85.0

810 84.8 84.6 84.4 84.1 83.9 83.7 83.5 83.3 83.1 82.9

820 82.7 82.5 82.3 82.1 81.9 81.7 81.5 81.3 81.1 80.9

830 80.7 80.5 80.3 80.2 80.0 79.8 79.6 79.4 79.2 79.0

840 78.8 78.6 78.5 78.3 78.1 77.9 77.7 77.5 77.3 77.2

850 77.0 76.8 76.6 76.4 76.3 76.1 75.9 75.7 75.6 75.4

860 75.2 75.0 74.9 74.7 74.5 74.3 74.2 74.0 73.8 73.7

870 73.5 73.3 73.1 73.0 72.8 72.6 72.5 72.3 72.2 72.0

880 71.8 71.7 71.5 71.3 71.2 71.0 70.9 70.7 70.5 70.4

890 70.2 70.1 69.9 69.7 69.6 69.4 69.3 69.1 69.0 68.8

900 68.7 68.5 68.4 68.2 68.1 67.9 67.8 67.6 67.5 67.3

910 67.2 67.0 66.9 66.7 66.6 66.4 66.3 66.1 66.0 65.9

920 65.7 65.6 65.4 65.3 65.1 65.0 64.9 64.7 64.6 64.4

930 64.3 64.2 64.0 63.9 63.8 63.6 63.5 63.4 63.2 63.1

940 62.9 62.8 62.7 62.5 62.4 62.3 62.2 62.0 61.9 61.8

950 61.6 61.5 61.4 61.2 61.1 61.0 60.9 60.7 60.6 60.5

960 60.4 60.2 60.1 60.0 59.9 59.7 59.6 59.5 59.4 59.2

970 59.1 59.0 58.9 58.7 58.6 58.5 58.4 58.3 58.2 58.0

980 57.9 57.8 57.7 57.6 57.4 57.3 57.2 57.1 57.0 56.9

990 56.7 56.6 56.5 56.4 56.3 56.2 56.1 56.0 55.8 55.7

36

Page 95: Hardness Conversion Tables

L o a d 5 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

190 2568 2541 2515 2489 2463 2438 2413 2389 2365 2341

200 2318 2294 2272 2250 2228 2206 2184 2163 2143 2122

210 2102 2082 2063 2043 2024 2005 1987 1969 1951 1933

220 1915 1898 1881 1864 1847 1831 1815 1799 1783 1768

230 1752 1737 1722 1708 1693 1679 1664 1650 1637 1623

240 1609 1596 1583 1570 1557 1544 1532 1519 1507 1495

250 1483 1471 1460 1448 1437 1426 1414 1404 1393 1382

260 1371 1361 1350 1340 1330 1320 1310 1300 1291 1281

270 1272 1262 1253 1244 1235 1226 1217 1208 1199 1191

280 1182 1174 1166 1157 1149 1141 1133 1125 1118 1110

290 1102 1095 1087 1080 1072 1065 1058 1051 1044 1037

300 1030 1023 1016 1010 1003 997 990 984 977 971

310 965 958 952 946 940 934 928 922 917 911

320 905 900 894 889 883 878 872 867 862 856

330 851 846 841 836 831 826 821 816 811 807

340 802 797 793 788 783 779 774 770 765 761

350 757 752 748 744 740 736 731 727 723 719

360 715 711 707 704 700 696 692 688 685 681

370 677 673 670 666 663 659 656 652 649 645

380 642 639 635 632 629 625 622 619 616 613

390 609 606 603 600 597 594 591 588 585 582

400 579 576 574 571 568 565 562 560 557 554

410 551 549 546 543 541 538 536 533 531 528

420 526 523 521 518 516 513 511 508 506 504

430 501 499 497 494 492 490 488 485 483 481

440 479 477 474 472 470 468 466 464 462 460

450 458 456 454 452 450 448 446 444 442 440

460 438 436 434 432 431 429 427 425 423 421

470 420 418 416 414 413 411 409 407 406 404

480 402 401 399 397 396 394 392 391 389 388

490 386 385 383 381 380 378 377 375 374 372

500 371 369 368 366 365 363 362 361 359 358

510 356 355 354 352 351 350 348 347 345 344

520 343 342 340 339 338 336 335 334 333 331

530 330 329 328 326 325 324 323 321 320 319

540 318 317 316 314 313 312 311 310 309 308

550 306 305 304 303 302 301 300 299 298 297

560 296 295 293 292 291 290 289 288 287 286

570 285 284 283 282 281 280 279 278 277 277

580 276 275 274 273 272 271 270 269 268 267

590 266 265 265 264 263 262 261 260 259 258

600 258 257 256 255 254 253 252 252 251 250

610 249 248 248 247 246 245 244 244 243 242

620 241 240 240 239 238 237 237 236 235 234

630 234 233 232 231 231 230 229 228 228 227

37

Page 96: Hardness Conversion Tables

L o a d 5 0 k g f

Diagonal Vickers Hardness Number

(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

640 226 226 225 224 224 223 222 221 221 220

650 219 219 218 217 217 216 215 215 214 213

660 213 212 212 211 210 210 209 208 208 207

670 207 206 205 205 204 203 203 202 202 201

680 200 200 199 199 198 198 197 196 196 195

690 195 194 194 193 192 192 191 191 190 190

700 189 189 188 188 187 187 186 185 185 184

710 184 183 183 182 182 181 181 180 180 179

720 179 178 178 177 177 176 176 175 175 174

730 174 173 173 173 172 172 171 171 170 170

740 169 169 168 168 167 167 167 166 166 165

750 165 164 164 163 163 163 162 162 161 161

760 160 160 160 159 159 158 158 158 157 157

770 156 156 156 155 155 154 154 154 153 153

780 152 152 152 151 151 150 150 150 149 149

790 149 148 148 147 147 147 146 146 146 145

800 145 144 144 144 143 143 143 142 142 142

810 141 141 141 140 140 140 139 139 139 138

820 138 138 137 137 137 136 136 136 135 135

830 135 134 134 134 133 133 133 132 132 132

840 131 131 131 130 130 130 130 129 129 129

850 128 128 128 127 127 127 127 126 126 126

860 125 125 125 124 124 124 124 123 123 123

870 122 122 122 122 121 121 121 121 120 120

880 120 119 119 119 119 118 118 118 118 117

890 117 117 117 116 116 116 115 115 115 115

900 114 114 114 114 113 113 113 113 112 112

910 112 112 111 111 111 111 110 110 110 110

920 110 109 109 109 109 108 108 108 108 107

930 107 107 107 106 106 106 106 106 105 105

940 105 105 104 104 104 104 104 103 103 103

950 103 102 102 102 102 102 101 101 101 101

960 101 100 100 100 99.8 99.5 99.3 99.1 98.9 98.7

970 98.5 98.3 98.1 97.9 97.7 97.5 97.3 97.1 96.9 96.7

980 96.5 96.3 96.1 95.9 95.7 95.5 95.4 95.2 95.0 94.8

990 94.6 94.4 94.2 94.0 93.8 93.6 93.4 93.3 93.1 92.9

38