KS（Korean Standard）version

※This catalog conforms to the Korean Industrial Standards as of September 30, 2018. The Korean Industrial Standards may be revised after catalog publication. In that case, please refer separately to the latest Korean Industrial Standards specification content.※Technical information such as the characteristic value described in this catalog does not mean any guarantee except specification value.※Since this catalog is subject to change without notice in the future, please contact the department in charge for the latest information.※Please be advised that no responsibility will be incurred for damages caused by misuse of technical information described in this catalog etc.

HP http://www.tokyosteel.co.jp

For ordering and inquiries, please contact the following.

Head office

Sales OfficesOsaka branch office

Nagoya branch office

Kyushu branch office

Okayama branch office

Utsunomiya branch office

PlantsTahara Plant

Okayama Plant

Kyushu Plant

Utsunomiya Plant

SteelCenterTakamatsu SteelCenter

Kasumigaseki-Tokyu Bldg 15F, 3-7-1, Kasumigaseki, Chiyoda-ku, Tokyo 100-0013, JapanTEL.03-3501-7721　FAX.03-3580-8859（representative）TEL.03-3501-3255(Steel Sheet Section・Building Material Development Division)　FAX.03-3580-8859(Common sales)TEL.03-3501-3223(Steel Sheet Section・Steel Sheet Development Division)

Osaka Kokusai Bldg. 3F,2-3-13, Azuchi-cho,Chuo-ku, Osaka-shi Osaka 541-0052, JapanTEL.06-6264-1368　FAX.06-6264-6396Nittochi Nagoya Bldg. 7F,2-1-1, Sakae,Naka-ku Nagoya-shi Aichi 460-0008, JapanTEL.052-203-0855　FAX.052-203-3021Located at Kyushu PlantTEL.093-791-5988　FAX.093-701-3581Located at Okayama PlantTEL.086-455-7169　FAX.086-455-3105Located at Utsunomiya PlantTEL.028-670-6235　FAX.028-670-6238

2-1-3, Shirahama,Tahara-shi, Aichi 441-3436, JapanTEL.0531-24-0810　FAX.0531-24-08184-1-1, Minamise,Kurashiki-shi, Okayama 712-8055, JapanTEL.086-455-7151　FAX.086-455-31053-5-1, Minami Futajima,Wakamatsu-ku, Kitakyushu-shi,Fukuoka 808-0109, JapanTEL.093-791-2635　FAX.093-791-263911-1, Kiyohara-kogyo-danchi,Utsunomiya-shi, Tochigi 321-3231, JapanTEL.028-670-5607　FAX.028-670-5608

5-1-1, Asahi-machi,Takamatsu-shi, Kagawa 760-0065, JapanTEL.087-822-3111　FAX.087-822-3117

1 TOKYO STEEL

Manufacturing process

■ Steelmaking process

Reheating furnace Breakdown mill Universal mill Finishing mill

Beam blank

■ Rolling process

製鐵の未来を創造する。

2TOKYO STEEL

Electric arc furnace (DC type)Scrap Ladle furnace Continuous casting

Hot sawStraightener Cooling bed

Product

【H beam】

Tokyo Steel utilizes the latest electric arc

furnace facilities, to promote the circulation of

resources by using domestic scraps and to

implement low-carbon society.

We will continue to pursue quality improvement

and technology development.

Our "H beam" is used in a wide variety of fields including

construction and civil engineering field based on the man-

ufacturing experience for many years.

By all means, please order "H beam" of Tokyo Steel.

Foreword

Table of contents

………………………………………… 1

………………………… 2

………………………… 3

………………………… 4

… 5

……… 8

………………………… 9

………… 10

…… 10

………………………… 11

………………………… 12

…………………… 12

Foreword

Manufacturing process

Chemical composition

Mechanical properties

Dimensions and cross section performance

Dimension/mass tolerance and length

Labels and Roll Marks

Manufacturing standard certification

Points to keep in mind when purchasing

Inspection certificate

Notes on handling, storage and transportation

How to check our products

1 TOKYO STEEL

Manufacturing process

■ Steelmaking process

Reheating furnace Breakdown mill Universal mill Finishing mill

Beam blank

■ Rolling process

製鐵の未来を創造する。

2TOKYO STEEL

Electric arc furnace (DC type)Scrap Ladle furnace Continuous casting

Hot sawStraightener Cooling bed

Product

【H beam】

Tokyo Steel utilizes the latest electric arc

furnace facilities, to promote the circulation of

resources by using domestic scraps and to

implement low-carbon society.

We will continue to pursue quality improvement

and technology development.

Our "H beam" is used in a wide variety of fields including

construction and civil engineering field based on the man-

ufacturing experience for many years.

By all means, please order "H beam" of Tokyo Steel.

Foreword

Table of contents

………………………………………… 1

………………………… 2

………………………… 3

………………………… 4

… 5

……… 8

………………………… 9

………… 10

…… 10

………………………… 11

………………………… 12

…………………… 12

Foreword

Manufacturing process

Chemical composition

Mechanical properties

Dimensions and cross section performance

Dimension/mass tolerance and length

Labels and Roll Marks

Manufacturing standard certification

Points to keep in mind when purchasing

Inspection certificate

Notes on handling, storage and transportation

How to check our products

■ H beam （KS） manufactured by Tokyo Steel Corporation

■ H beam （KS） manufactured by Tokyo Steel Corporation

3T

OK

YO

ST

EE

L4

TO

KY

O S

TE

EL

Chemical composition

Mechanical properties

Korean Standard

Number Inside

radius

Bending testradiusImpact test＊3

Yield ratio（％） Elongation

Thickness of steel

（mm）＊1

Yield point andyield strength（N/mm2）

Thickness of steel

（mm）＊1Thickness

of

steel＊1

（mm）

Test

pieces％

Angle of

bending

Test specimen

and specimen

collection direction

Charpy

absorption

energy

（J）

Tensile

strength

（N/mm2）

Test

temperature

（℃）

Designation

of grade

Thickness

of steel＊1

（mm）

t≦16

≧275

≧355

355

～

475

16＜t≦40

≧265

≧345

355

～

475

t≦16

－

－

≦85 ＊2

16＜t≦40

－

－

≦85 ＊2

≧21

≧18

≧21

≧22

≧17

≧19

≧21

－

20＊4

0

－

≧27＊4

≧27

－

＊4V-notched

test piece

Rolling direction

V-notched

test piece

Rolling direction

180°

－

－

1.5 times the

thickness

－

－

SS275

SM355A

SHN355

－

t≦200

t≦75

410～ 550

490～ 630

490～ 610

t≦5

5＜t≦16

16＜t≦40

t≦5

5＜t≦16

16＜t≦40

t≦40

No.5

No.1A

No.1A

No.5

No.1A

No.1A

No.1A

Rolled steels for

general structure

（KS D 3503）

Rolled steels for

welded

structures

（KS D 3515）

Hot rolled steel

sections for

building structure

（KS D 3866）

Carbon

equivalent

Ceq＊2（％）

Weld crack

sensitivity

composition

Pcm＊2（％）

SS275

SM355A

SHN355

－

t≦200

t≦75

≦0.25

≦0.20

≦0.20

≦0.45

≦0.55

≦0.40

≦0.050

≦0.035

≦0.035

≦0.050

≦0.035

≦0.030

－

－

≦0.60

－

－

≦0.45

－

－

≦0.35

－

－

≦0.15

－

－

≦0.11

－

－

≦0.05

－

－

≧20

－

≦0.47

≦0.45

－

≦0.27

≦0.26

≦1.40

≦1.60

0.5

～

1.5

Rolled steels for

general structure

（KS D 3503）

Rolled steels for

welded structures

（KS D 3515）

Hot rolled steel

sections for

building structure

（KS D 3866）

Chemical composition（％）

Korean

Standard

Number

Designation

of

gradeThickness

of steel＊1

（mm）

Ｃ Ｓｉ Ｐ Ｓ Ｃｕ Ｎｉ Ｃｒ Ｍｏ Ｖ Ｎｂ Ｍｎ/ＳＭｎ

Remarks　Alloy elements other than those given in the above table may be added, if necessary. However, the addition of KS D 3503 shall be no more than the alloying elements of the alloy steel specified in KS D 0041. The sum of Nb and V of KS D 3866 shall not be over 0.15%.

＊1：Set as flange thickness.＊2：Carbon equivalent　Ceq(％)＝C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15

Weld crack sensitivity composition　Pcm(％)＝C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/14+5BInstead of carbon equivalent, weld crack sensitivity composition may apply subject to an agreement between the purchaser and the manufacturer.

＊1：Set as flange thickness. ＊2：The yield ratio of steel sections of 10 mm or under in thickness shall be 87% or under.＊3：The impact test is applied to a steel material with a thickness exceeding 6 mm and is set as the average value of three test pieces. Also, the testing method and test specimens are according to KS B 0810.＊4：Particularly when there is designation of an ordering person, a test shall be conducted.

■ H beam （KS） manufactured by Tokyo Steel Corporation

■ H beam （KS） manufactured by Tokyo Steel Corporation

3T

OK

YO

ST

EE

L4

TO

KY

O S

TE

EL

Chemical composition

Mechanical properties

Korean Standard

Number Inside

radius

Bending testradiusImpact test＊3

Yield ratio（％） Elongation

Thickness of steel

（mm）＊1

Yield point andyield strength（N/mm2）

Thickness of steel

（mm）＊1Thickness

of

steel＊1

（mm）

Test

pieces％

Angle of

bending

Test specimen

and specimen

collection direction

Charpy

absorption

energy

（J）

Tensile

strength

（N/mm2）

Test

temperature

（℃）

Designation

of grade

Thickness

of steel＊1

（mm）

t≦16

≧275

≧355

355

～

475

16＜t≦40

≧265

≧345

355

～

475

t≦16

－

－

≦85 ＊2

16＜t≦40

－

－

≦85 ＊2

≧21

≧18

≧21

≧22

≧17

≧19

≧21

－

20＊4

0

－

≧27＊4

≧27

－

＊4V-notched

test piece

Rolling direction

V-notched

test piece

Rolling direction

180°

－

－

1.5 times the

thickness

－

－

SS275

SM355A

SHN355

－

t≦200

t≦75

410～ 550

490～ 630

490～ 610

t≦5

5＜t≦16

16＜t≦40

t≦5

5＜t≦16

16＜t≦40

t≦40

No.5

No.1A

No.1A

No.5

No.1A

No.1A

No.1A

Rolled steels for

general structure

（KS D 3503）

Rolled steels for

welded

structures

（KS D 3515）

Hot rolled steel

sections for

building structure

（KS D 3866）

Carbon

equivalent

Ceq＊2（％）

Weld crack

sensitivity

composition

Pcm＊2（％）

SS275

SM355A

SHN355

－

t≦200

t≦75

≦0.25

≦0.20

≦0.20

≦0.45

≦0.55

≦0.40

≦0.050

≦0.035

≦0.035

≦0.050

≦0.035

≦0.030

－

－

≦0.60

－

－

≦0.45

－

－

≦0.35

－

－

≦0.15

－

－

≦0.11

－

－

≦0.05

－

－

≧20

－

≦0.47

≦0.45

－

≦0.27

≦0.26

≦1.40

≦1.60

0.5

～

1.5

Rolled steels for

general structure

（KS D 3503）

Rolled steels for

welded structures

（KS D 3515）

Hot rolled steel

sections for

building structure

（KS D 3866）

Chemical composition（％）

Korean

Standard

Number

Designation

of

gradeThickness

of steel＊1

（mm）

Ｃ Ｓｉ Ｐ Ｓ Ｃｕ Ｎｉ Ｃｒ Ｍｏ Ｖ Ｎｂ Ｍｎ/ＳＭｎ

Remarks　Alloy elements other than those given in the above table may be added, if necessary. However, the addition of KS D 3503 shall be no more than the alloying elements of the alloy steel specified in KS D 0041. The sum of Nb and V of KS D 3866 shall not be over 0.15%.

＊1：Set as flange thickness.＊2：Carbon equivalent　Ceq(％)＝C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15

Weld crack sensitivity composition　Pcm(％)＝C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/14+5BInstead of carbon equivalent, weld crack sensitivity composition may apply subject to an agreement between the purchaser and the manufacturer.

＊1：Set as flange thickness. ＊2：The yield ratio of steel sections of 10 mm or under in thickness shall be 87% or under.＊3：The impact test is applied to a steel material with a thickness exceeding 6 mm and is set as the average value of three test pieces. Also, the testing method and test specimens are according to KS B 0810.＊4：Particularly when there is designation of an ordering person, a test shall be conducted.

6T

OK

YO

ST

EE

L5

TO

KY

O S

TE

EL

Dimensions and cross section performance

■ Standard sectional dimensions, sectional area, unit mass and sectional properties of H beam (KS)

Sectionalarea,cm2

Unitmass,kg/m

Nominal dimension （Depth × Width） H×Ｂ t1 t2 r Ix Iy ix iy Zx Zy

200×200

＊200×204

＊208×202

244×175

＊244×252

＊248×249

250×250

＊250×255

294×200

＊298×201

294×302

＊298×299

300×300

300×305

＊304×301

＊310×305

＊310×310

346×174

350×175

＊354×176

8

12

10

7

11

8

9

14

8

9

12

9

10

15

11

15

20

6

7

8

12

12

16

11

11

13

14

14

12

14

12

14

15

15

17

20

20

9

11

13

13

13

13

16

16

16

16

16

18

18

18

18

18

18

18

18

18

14

14

14

63.53

71.53

83.69

56.24

82.06

84.70

92.18

104.7

72.38

83.36

107.7

110.8

119.8

134.8

134.8

165.3

180.8

52.68

63.14

73.68

49.9

56.2

65.7

44.1

64.4

66.5

72.4

82.2

56.8

65.4

84.5

87.0

94.0

106

106

130

142

41.4

49.6

57.8

200×200

250×175

250×250

300×200

300×300

350×175

Standard sectional dimensionmm

Second moment ofarea,cm4

Second radius ofarea,cm

Modulus ofsection,cm3

4720

4980

6350

6120

8790

9930

10800

11500

11300

13300

16900

18800

20400

21500

23400

28600

29900

11100

13600

16100

1600

1700

2200

984

2940

3350

3650

3880

1600

1900

5520

6240

6750

7100

7730

9470

10000

792

984

1180

8.62

8.35

8.83

10.4

10.3

10.8

10.8

10.5

12.5

12.6

12.5

13.0

13.1

12.6

13.2

13.2

12.9

14.5

14.7

14.8

5.02

4.88

5.13

4.18

5.98

6.29

6.29

6.09

4.71

4.77

7.16

7.50

7.51

7.26

7.57

7.57

7.44

3.88

3.95

4.01

472

498

628

502

720

801

867

919

771

893

1150

1270

1360

1440

1540

1850

1930

641

775

909

160

167

218

113

233

269

292

304

160

189

365

417

450

456

514

621

645

91.0

112

135

Zy

248

292

534

646

669

776

809

145

174

481

809

951

985

1120

1170

1300

1530

159

187

448

541

185

214

257

Sectionalarea,cm2

Unitmass,kg/m

Nominal dimension （Depth × Width） H×Ｂ t1 t2 r Ix Iy ix iy Zx

＊336×249

340×250

＊338×351

344×348

＊344×354

350×350

＊350×357

396×199

400×200

390×300

＊388×402

＊394×398

＊394×405

400×400

＊400×408

＊406×403

＊414×405

446×199

450×200

＊434×299

440×300

496×199

500×200

＊506×201

8

9

13

10

16

12

19

7

8

10

15

11

18

13

21

16

18

8

9

10

11

9

10

11

12

14

13

16

16

19

19

11

13

16

15

18

18

21

21

24

28

12

14

15

18

14

16

19

20

20

20

20

20

20

20

16

16

22

22

22

22

22

22

22

22

18

18

24

24

20

20

20

88.15

101.5

135.3

146.0

166.6

173.9

198.4

72.16

84.12

136.0

178.5

186.8

214.4

218.7

250.7

254.9

295.4

84.30

96.76

135.0

157.4

101.3

114.2

131.3

69.2

79.7

106

115

131

137

156

56.6

66.0

107

140

147

168

172

197

200

232

66.2

76.0

106

124

79.5

89.6

103

350×250

350×350

400×200

400×300

400×400

450×200

450×300

500×200

Standard sectional dimensionmm

Second moment ofarea,cm4

Second radius ofarea,cm

Modulus ofsection,cm3

18500

21700

28200

33300

35300

40300

42800

20000

23700

38700

49000

56100

59700

66600

70900

78000

92800

28700

33500

46800

56100

41900

47800

56500

3090

3650

9380

11200

11800

13600

14400

1450

1740

7210

16300

18900

20000

22400

23800

26200

31000

1580

1870

6690

8110

1840

2140

2580

14.5

14.6

14.4

15.1

14.6

15.2

14.7

16.7

16.8

16.9

16.6

17.3

16.7

17.5

16.8

17.5

17.7

18.5

18.6

18.6

18.9

20.3

20.5

20.7

5.92

6.00

8.33

8.78

8.43

8.84

8.53

4.48

4.54

7.28

9.54

10.1

9.65

10.1

9.75

10.1

10.2

4.33

4.40

7.04

7.18

4.27

4.33

4.43

1100

1280

1670

1940

2050

2300

2450

1010

1190

1980

2520

2850

3030

3330

3540

3840

4480

1290

1490

2160

2550

1690

1910

2230

Remarks：When ordering please show actual size（H×B× t₁/t₂） and length. For the length, refer to "■ Length" on page 10.

Remarks：Please inquire in advance about themanufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝Z ＝ I/e

I/across section Second momentcross section Secondary radiusSection modulus

H｜2

B｜４

ｔ2

ｔ2

ｔ1

r

r

H

B

ey

ex

i x

i x

i y i y

Y

X X

Y

Remarks：When ordering please show actual size（H×B× t₁/t₂） and length. For the length, refer to "■ Length" on page 10.

Remarks：Please inquire in advance about themanufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝Z ＝ I/e

I/across section Second momentcross section Secondary radiusSection modulus

H｜2

B｜４

ｔ2

ｔ2

ｔ1

r

r

H

B

ey

ex

i x

i x

i y i y

Y

X X

Y

6T

OK

YO

ST

EE

L5

TO

KY

O S

TE

EL

Dimensions and cross section performance

■ Standard sectional dimensions, sectional area, unit mass and sectional properties of H beam (KS)

Sectionalarea,cm2

Unitmass,kg/m

Nominal dimension （Depth × Width） H×Ｂ t1 t2 r Ix Iy ix iy Zx Zy

200×200

＊200×204

＊208×202

244×175

＊244×252

＊248×249

250×250

＊250×255

294×200

＊298×201

294×302

＊298×299

300×300

300×305

＊304×301

＊310×305

＊310×310

346×174

350×175

＊354×176

8

12

10

7

11

8

9

14

8

9

12

9

10

15

11

15

20

6

7

8

12

12

16

11

11

13

14

14

12

14

12

14

15

15

17

20

20

9

11

13

13

13

13

16

16

16

16

16

18

18

18

18

18

18

18

18

18

14

14

14

63.53

71.53

83.69

56.24

82.06

84.70

92.18

104.7

72.38

83.36

107.7

110.8

119.8

134.8

134.8

165.3

180.8

52.68

63.14

73.68

49.9

56.2

65.7

44.1

64.4

66.5

72.4

82.2

56.8

65.4

84.5

87.0

94.0

106

106

130

142

41.4

49.6

57.8

200×200

250×175

250×250

300×200

300×300

350×175

Standard sectional dimensionmm

Second moment ofarea,cm4

Second radius ofarea,cm

Modulus ofsection,cm3

4720

4980

6350

6120

8790

9930

10800

11500

11300

13300

16900

18800

20400

21500

23400

28600

29900

11100

13600

16100

1600

1700

2200

984

2940

3350

3650

3880

1600

1900

5520

6240

6750

7100

7730

9470

10000

792

984

1180

8.62

8.35

8.83

10.4

10.3

10.8

10.8

10.5

12.5

12.6

12.5

13.0

13.1

12.6

13.2

13.2

12.9

14.5

14.7

14.8

5.02

4.88

5.13

4.18

5.98

6.29

6.29

6.09

4.71

4.77

7.16

7.50

7.51

7.26

7.57

7.57

7.44

3.88

3.95

4.01

472

498

628

502

720

801

867

919

771

893

1150

1270

1360

1440

1540

1850

1930

641

775

909

160

167

218

113

233

269

292

304

160

189

365

417

450

456

514

621

645

91.0

112

135

Zy

248

292

534

646

669

776

809

145

174

481

809

951

985

1120

1170

1300

1530

159

187

448

541

185

214

257

Sectionalarea,cm2

Unitmass,kg/m

Nominal dimension （Depth × Width） H×Ｂ t1 t2 r Ix Iy ix iy Zx

＊336×249

340×250

＊338×351

344×348

＊344×354

350×350

＊350×357

396×199

400×200

390×300

＊388×402

＊394×398

＊394×405

400×400

＊400×408

＊406×403

＊414×405

446×199

450×200

＊434×299

440×300

496×199

500×200

＊506×201

8

9

13

10

16

12

19

7

8

10

15

11

18

13

21

16

18

8

9

10

11

9

10

11

12

14

13

16

16

19

19

11

13

16

15

18

18

21

21

24

28

12

14

15

18

14

16

19

20

20

20

20

20

20

20

16

16

22

22

22

22

22

22

22

22

18

18

24

24

20

20

20

88.15

101.5

135.3

146.0

166.6

173.9

198.4

72.16

84.12

136.0

178.5

186.8

214.4

218.7

250.7

254.9

295.4

84.30

96.76

135.0

157.4

101.3

114.2

131.3

69.2

79.7

106

115

131

137

156

56.6

66.0

107

140

147

168

172

197

200

232

66.2

76.0

106

124

79.5

89.6

103

350×250

350×350

400×200

400×300

400×400

450×200

450×300

500×200

Standard sectional dimensionmm

Second moment ofarea,cm4

Second radius ofarea,cm

Modulus ofsection,cm3

18500

21700

28200

33300

35300

40300

42800

20000

23700

38700

49000

56100

59700

66600

70900

78000

92800

28700

33500

46800

56100

41900

47800

56500

3090

3650

9380

11200

11800

13600

14400

1450

1740

7210

16300

18900

20000

22400

23800

26200

31000

1580

1870

6690

8110

1840

2140

2580

14.5

14.6

14.4

15.1

14.6

15.2

14.7

16.7

16.8

16.9

16.6

17.3

16.7

17.5

16.8

17.5

17.7

18.5

18.6

18.6

18.9

20.3

20.5

20.7

5.92

6.00

8.33

8.78

8.43

8.84

8.53

4.48

4.54

7.28

9.54

10.1

9.65

10.1

9.75

10.1

10.2

4.33

4.40

7.04

7.18

4.27

4.33

4.43

1100

1280

1670

1940

2050

2300

2450

1010

1190

1980

2520

2850

3030

3330

3540

3840

4480

1290

1490

2160

2550

1690

1910

2230

Remarks：When ordering please show actual size（H×B× t₁/t₂） and length. For the length, refer to "■ Length" on page 10.

Remarks：Please inquire in advance about themanufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝Z ＝ I/e

I/across section Second momentcross section Secondary radiusSection modulus

H｜2

B｜４

ｔ2

ｔ2

ｔ1

r

r

H

B

ey

ex

i x

i x

i y i y

Y

X X

Y

Remarks：When ordering please show actual size（H×B× t₁/t₂） and length. For the length, refer to "■ Length" on page 10.

Remarks：Please inquire in advance about themanufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝Z ＝ I/e

I/across section Second momentcross section Secondary radiusSection modulus

H｜2

B｜４

ｔ2

ｔ2

ｔ1

r

r

H

B

ey

ex

i x

i x

i y i y

Y

X X

Y

7T

OK

YO

ST

EE

L Sectionalarea,cm2

Unitmass,kg/m

Nominal dimension （Depth × Width） H×Ｂ t1 t2 r Ix Iy ix iy Zx Zy

482×300

488×300

596×199

600×200

＊606×201

＊612×202

582×300

588×300

＊594×302

＊692×300

700×300

＊708×302

＊792×300

800×300

＊808×302

＊890×299

900×300

＊912×302

11

11

10

11

12

13

12

12

14

13

13

15

14

14

16

15

16

18

15

18

15

17

20

23

17

20

23

20

24

28

22

26

30

23

28

34

26

26

22

22

22

22

28

28

28

28

28

28

28

28

28

28

28

28

145.5

163.5

120.5

134.4

152.5

170.7

174.5

192.5

222.4

211.5

235.5

273.6

243.4

267.4

307.6

270.9

309.8

364.0

114

128

94.6

106

120

134

137

151

175

166

185

215

191

210

241

213

243

286

500×300

600×200

600×300

700×300

800×300

900×300

Standard sectional dimensionmm

Second moment ofarea,cm4

Second radius ofarea,cm

Modulus ofsection,cm3

60400

71000

68700

77600

90400

103000

103000

118000

137000

172000

201000

237000

254000

292000

339000

345000

411000

498000

6760

8110

1980

2280

2720

3180

7670

9020

10600

9020

10800

12900

9930

11700

13800

10300

12600

15700

20.4

20.8

23.9

24.0

24.3

24.6

24.3

24.8

24.9

28.6

29.3

29.4

32.3

33.0

33.2

35.7

36.4

37.0

6.82

7.04

4.05

4.12

4.22

4.31

6.63

6.85

6.90

6.53

6.78

6.86

6.39

6.62

6.70

6.16

6.39

6.56

2500

2910

2310

2590

2980

3380

3530

4020

4620

4980

5760

6700

6410

7290

8400

7760

9140

10900

451

541

199

228

271

314

511

601

701

602

722

853

662

782

915

688

843

1040

NOTE Those sizes other than asterisk（＊）are used in general products.

Remarks：When ordering please show actual size（H×B× t₁/t₂） and length. For the length, refer to "■ Length" on page 10.

Remarks：Please inquire in advance about themanufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝Z ＝ I/e

I/across section Second momentcross section Secondary radiusSection modulus

H｜2

B｜４

ｔ2

ｔ2

ｔ1

r

r

H

B

ey

ex

i x

i x

i y i y

Y

X X

Y

8T

OK

YO

ST

EE

L

Ｈ

ee

Side

Height

B

■ Shapes, dim

ensional tolerances and mass of H

beam （KS）

±2.0

±2.5

±3.0

±2.0

±2.5

±3.0

±4.0

±1.0

±1.5

±1.7

±2.0

±0.7

±1.0

±1.5

±2.0

＋40

－0

±2.5

±3.5

2.0 or under

2.5 or under

3.0 or under

±1.0

±2.0

±3.0

±5％

±4％

Division

ToleranceRemarks

Add 5m

m to the above plus side for each

meter or additional fraction

0.20% or under of length

0.10% or under of length

1.5 % or under of one side (b)　

(but the minimum value of　

tolerance is 1.5mm)

1.5 % or under of one side (b)　

(but the minimum value of　

tolerance is 3.0mm)

1.6 % or under of w

idth B or

height H, but the m

inimum

value of tolerance is 3.0mm

To be applied to large bending of top and bottom

and left and right.

Thicker nominal values shall be

applied. It shall apply to the mass

of 1 piece or 1 bundle.

1.0% or under of w

idth B

（but the m

inimum value of

tolerance is 1.5mm）

1.2% or under of w

idth B(but the m

inimum value of

tolerance is 1.5mm)

unit：㎜

■ Length

The standard length (m) described in K

S D 3502 is 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0

Lengths other than standard length shall comply w

ith the agreement betw

een the purchaser and the supplier.

H｜2

B｜４

ｔ2

ｔ1

H

B

r

b1

S＝b1 -b2

2b2

W

Dimension / m

ass tolerance and length

F

ｂｂ

F

Under 100

100 or over to and excl. 200

200 or over

Under 200

200 or over to and excl. 400

400 or over to and excl. 600

600 or over

7m or under

Over 7m

300 or under in height H

Over 300 in height H

300 or under in height H

Over 300 in height H

200 or under in width B

Over 200 in w

idth B

Under 350 in nom

inal height

350 or over to and excl. 550 in nominal height

550 or over in nominal height

Under 300 in w

idth B

300 or over in width B

Sectional squareness　　　 （e）

10 or under

Over 10 to and incl. 20

Over 20

Under 10

10mm or over

Width

（Ｂ）

Height（Ｈ）

Flange

（t 2）

Web

（t 1）

Thickness

Under 16

16 or over to and excl. 25

25 or over to and excl. 40

40 or over

Under 16

16 or over to and excl. 25

25 or over to and excl. 40

40 or over

Length

Squareness（T）

Bending

Mass

Eccentricity（Ｓ）

Curvature of web

（Ｗ）

Curvature offlange（F）

Radius ofcurvature（r）

T

T

7 TOKYO STEEL

Sectional

area,

cm2

Unit

mass,

kg/m

Nominal dimension

（Depth × Width）

H×Ｂ

t1t2

rIx

Iyix

iyZx

Zy

482×300

488×300

596×199

600×200

＊606×201

＊612×202

582×300

588×300

＊594×302

＊692×300

700×300

＊708×302

＊792×300

800×300

＊808×302

＊890×299

900×300

＊912×302

11 11 10 11 12 13 12 12 14 13 13 15 14 14 16 15 16 18

15 18 15 17 20 23 17 20 23 20 24 28 22 26 30 23 28 34

26 26 22 22 22 22 28 28 28 28 28 28 28 28 28 28 28 28

145.5

163.5

120.5

134.4

152.5

170.7

174.5

192.5

222.4

211.5

235.5

273.6

243.4

267.4

307.6

270.9

309.8

364.0

114

128

94.6

106

120

134

137

151

175

166

185

215

191

210

241

213

243

286

500×300

600×200

600×300

700×300

800×300

900×300Standard sectional dimension

mm

Second moment of

area,

cm4

Second radius of

area,

cm

Modulus of

section,

cm3

60400

71000

68700

77600

90400

103000

103000

118000

137000

172000

201000

237000

254000

292000

339000

345000

411000

498000

6760

8110

1980

2280

2720

3180

7670

9020

10600

9020

10800

12900

9930

11700

13800

10300

12600

15700

20.4

20.8

23.9

24.0

24.3

24.6

24.3

24.8

24.9

28.6

29.3

29.4

32.3

33.0

33.2

35.7

36.4

37.0

6.82

7.04

4.05

4.12

4.22

4.31

6.63

6.85

6.90

6.53

6.78

6.86

6.39

6.62

6.70

6.16

6.39

6.56

2500

2910

2310

2590

2980

3380

3530

4020

4620

4980

5760

6700

6410

7290

8400

7760

9140

10900

451

541

199

228

271

314

511

601

701

602

722

853

662

782

915

688

843

1040

NOTE Those sizes other than asterisk（

＊）are used in general products.

Remarks：When ordering please show actual size

（H×B× t₁/t₂） and length.

For the length, refer to "■ Length"

on page 10.

Remarks：Please inquire in advance about the

manufacturing situation.

（a＝断面積）

I ＝ ai2

i ＝

Z ＝ I/eI/a

cross section Second moment

cross section Secondary radius

Section modulus

H ｜ 2

B ｜ ４

ｔ2 ｔ2

ｔ1

r r

H

B

ey

ex

i x i x

i yi y

Y

XX

Y

8TOKYO STEEL

Ｈ

e e

Side

Height

B

■ Shapes, dimensional tolerances and mass of H beam （KS）

±2.0

±2.5

±3.0

±2.0

±2.5

±3.0

±4.0

±1.0

±1.5

±1.7

±2.0

±0.7

±1.0

±1.5

±2.0

＋40－0

±2.5

±3.5

2.0 or under

2.5 or under

3.0 or under

±1.0

±2.0

±3.0

±5％

±4％

Division Tolerance Remarks

Add 5mm to the above plus side for eachmeter or additional fraction

0.20% or under of length

0.10% or under of length

1.5 % or under of one side (b)　(but the minimum value of　tolerance is 1.5mm)

1.5 % or under of one side (b)　(but the minimum value of　tolerance is 3.0mm)

1.6 % or under of width B orheight H, but the minimumvalue of tolerance is 3.0mm

To be applied to large bending of top and bottom and left and right.

Thicker nominal values shall beapplied. It shall apply to the mass of 1 piece or 1 bundle.

1.0% or under of width B （but the minimum value oftolerance is 1.5mm）

1.2% or under of width B(but the minimum value oftolerance is 1.5mm)

unit：㎜

■ Length The standard length (m) described in KS D 3502 is 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0Lengths other than standard length shall comply with the agreement between the purchaser and the supplier.

H｜2

B｜４

ｔ2

ｔ1

H

B

r

b1S＝

b1- b22

b2

W

Dimension / mass tolerance and length

F

ｂｂF

Under 100

100 or over to and excl. 200

200 or over

Under 200

200 or over to and excl. 400

400 or over to and excl. 600

600 or over

7m or under

Over 7m

300 or under in height H

Over 300 in height H

300 or under in height H

Over 300 in height H

200 or under in width B

Over 200 in width B

Under 350 in nominal height

350 or over to and excl. 550 in nominal height

550 or over in nominal height

Under 300 in width B

300 or over in width B

Sectional squareness　　　 （e）

10 or under

Over 10 to and incl. 20

Over 20

Under 10

10mm or over

Width（Ｂ）

Height（Ｈ）

Flange

（t2）

Web

（t1）

Thickness

Under 16

16 or over to and excl. 25

25 or over to and excl. 40

40 or over

Under 16

16 or over to and excl. 25

25 or over to and excl. 40

40 or over

Length

Squareness（T）

Bending

Mass

Eccentricity（Ｓ）

Curvature of web（Ｗ）

Curvature offlange（F）

Radius ofcurvature（r）

T

T

9 TOKYO STEEL

Labels and Roll Marks

■ Label （example）

No. Descriptive name Description content or remarks

■ Roll mark In the H beam, the following roll marks are displayed at an intervals of 3,500 mm or less on the side of the flange.

KS mark

Certificate number

Standard name

Standard number

Designation of grade

length

Tokyo steel mark

Size

Heat number

Made date

Manufacturer and manufacturingfactory

Product code

QR code

Display made in Japan

D 3503;18-0348 , D 3515;18-0349 , D 3866;18-0350

Example；（in the case of KS D 3866）Hot rolled steel sections for building structure

Example　10.0Ｍ

Example　700×300×13/24

Example　Ｆ1-2345

Example　10.26.18（October 26,2018）

TOKYO STEEL MGF. CO.,LTD. KYUSHU

Size / Standard / Length / Date of manufacture / Heat number / Manufacturing serial number

Same as above

MADE IN JAPAN

①

②

③

④

⑤

⑥

⑦

⑧

⑨

⑩

⑪

⑫

⑬

⑭

Standard number Designation ofgrade Label color

KS D 3503

KS D 3515

KS D 3866

SS275

SM355A

SHN355

White

Red

Blue

13

14

10

12

11

1

2

4

5

6 7

8

9

3

About 20mm

About 30mm

10TOKYO STEEL

Manufacturing standard certification

Points to keep in mind when purchasing

■ H beam manufacturing standard certification

Kyushu Plant (Certificate number) D 3503;18-0348, D 3515;18-0349, D 3866;18-0350

SS275、SM355A、SHN355

・All the steel materials described in this catalog are killed steel.

・If you are requesting higher toughness for purchased steel products, please consult with us and specify additional

conditions on Charpy absorbed energy etc. as special order at purchase contract.

・In the case of a wide H beam used for members with large loads and spans, after consulting with us, additional

conditions on crystal grain size, Charpy absorbed energy, etc. are specified as special orders at the time of

purchase contract it is desirable.

・When steel is welded, there is a danger of cold cracking in the welded part as the thickness of the product

increases and the strength increases. Therefore, it is necessary to adopt a welding method suitable for the

characteristics of the steel material and purpose of use. The steel materials described in this catalog do not

guarantee unlimited compatibility for all different welding methods. The reason for this is that the behavior of the

steel material during welding and after welding does not only depend on the base material characteristics but

also because it is affected by the processing conditions, use conditions, dimensions, shape, etc. of the part.

・SHN355 has specified upper limit values for yield point and yield ratio with the aim of yielding at a given stress

and securing deformation performance after yield. Therefore, we recommend purchasing SHN355 rather than

SM355A for applications that exploit deformation capacity in the plastic region of steel material.

・In addition, if there is a demand for performance other than the specified value stated in this catalog, please

consult our company.

9 TOKYO STEEL

Labels and Roll Marks

■ Label （example）

No. Descriptive name Description content or remarks

■ Roll mark In the H beam, the following roll marks are displayed at an intervals of 3,500 mm or less on the side of the flange.

KS mark

Certificate number

Standard name

Standard number

Designation of grade

length

Tokyo steel mark

Size

Heat number

Made date

Manufacturer and manufacturingfactory

Product code

QR code

Display made in Japan

D 3503;18-0348 , D 3515;18-0349 , D 3866;18-0350

Example；（in the case of KS D 3866）Hot rolled steel sections for building structure

Example　10.0Ｍ

Example　700×300×13/24

Example　Ｆ1-2345

Example　10.26.18（October 26,2018）

TOKYO STEEL MGF. CO.,LTD. KYUSHU

Size / Standard / Length / Date of manufacture / Heat number / Manufacturing serial number

Same as above

MADE IN JAPAN

①

②

③

④

⑤

⑥

⑦

⑧

⑨

⑩

⑪

⑫

⑬

⑭

Standard number Designation ofgrade Label color

KS D 3503

KS D 3515

KS D 3866

SS275

SM355A

SHN355

White

Red

Blue

13

14

10

12

11

1

2

4

5

6 7

8

9

3

About 20mm

About 30mm

10TOKYO STEEL

Manufacturing standard certification

Points to keep in mind when purchasing

■ H beam manufacturing standard certification

Kyushu Plant (Certificate number) D 3503;18-0348, D 3515;18-0349, D 3866;18-0350

SS275、SM355A、SHN355

・All the steel materials described in this catalog are killed steel.

・If you are requesting higher toughness for purchased steel products, please consult with us and specify additional

conditions on Charpy absorbed energy etc. as special order at purchase contract.

・In the case of a wide H beam used for members with large loads and spans, after consulting with us, additional

conditions on crystal grain size, Charpy absorbed energy, etc. are specified as special orders at the time of

purchase contract it is desirable.

・When steel is welded, there is a danger of cold cracking in the welded part as the thickness of the product

increases and the strength increases. Therefore, it is necessary to adopt a welding method suitable for the

characteristics of the steel material and purpose of use. The steel materials described in this catalog do not

guarantee unlimited compatibility for all different welding methods. The reason for this is that the behavior of the

steel material during welding and after welding does not only depend on the base material characteristics but

also because it is affected by the processing conditions, use conditions, dimensions, shape, etc. of the part.

・SHN355 has specified upper limit values for yield point and yield ratio with the aim of yielding at a given stress

and securing deformation performance after yield. Therefore, we recommend purchasing SHN355 rather than

SM355A for applications that exploit deformation capacity in the plastic region of steel material.

・In addition, if there is a demand for performance other than the specified value stated in this catalog, please

consult our company.

11T

OK

YO

ST

EE

L

Inspection certificateInspection certificate

■ Inspection certificate （example）

WIDE FLANGE SHAPES

KS D 3515 SM355A

The ＊ marks indicates the value of standard and the test condition, the○ marks the product specificationand the inspection result value.

Sample

Name and address of the plant Signature by Quality Control Section

CU×100 　　　＊1 ×1000

NI

20MAX

55MAX

160MAX

35MAX

35MAX

47MAX

CR MO CEQ V

H×B×t1/t2 00.0M ◯◯ ◯◯ ◯◯◯◯◯ ◯◯◯ ◯◯◯

490630

＊1：CEQ=C+MN/6+

（CR+MO+V）/5+（NI+CU）/15

◯◯◯◯◯ ◯◯ - ◯◯◯◯

◯◯ ◯◯ ◯◯ ◯◯ ◯◯◯◯ ◯◯ ◯◯ ◯◯ ◯◯◯◯◯◯◯ - ◯◯◯◯

＊ ＊

＊

12T

OK

YO

ST

EE

L

Notes on handling, storage and transportation

How to check our products

■ Handling P

recautions・Welding, fusing, polishing, etc. to perform

fume, dust, etc., w

ear appropriate protective equipment.

Also, w

hen fumes, dust, etc. occur, perform

the necessary local exhaust system, general ventilation.

・Because of heavy objects, pay attention to falls, rolling, collapsing loads, falling etc.

・Do not contact, inhale or sw

allow.

・Do not get in your eyes.

・Because the cut end face is sharp, w

ear protective gloves for handling.

■ Storage precautions

・Avoid contact w

ith water leaks, acids / alkalis or substances containing them

.

・Avoid sudden tem

perature change and environment of high tem

perature and humidity.

・In the storage place, facilities for daylighting, lighting and ventilation necessary for storage and handling are

set up.

■ Shipping P

recautions・It does not correspond to international controlled m

aterial concerning transportation.

・Since it is a heavy item

, it should not collapse.

・To prevent perm

eation of rainwater and the like, it is desirable to coat a sheet or the like.

■ Inspection certificate

・Our products are m

anufactured appropriately based on Korean Industry S

tandards (KS), detailed quality

information can be confirm

ed by "Inspection certificate" shown on page 11.

－Chemical com

ponents: C, Si, Mn, P, S, etc.

－Test results on m

echanical properties: tensile test, bending test, impact test etc.

■ How to check w

hether it is counterfeit・By reading the Q

R code of the label described on page 9 w

ith the corresponding device, you can confirm that it

is our product.

11 TOKYO STEEL

Inspection certificate

Inspection certificate

■ Inspection certificate （example）

WIDE FLANGE SHAPES

KS D 3515 SM355A

The ＊ marks indicates the value of

standard and the test condition, the

○ marks the product specification

and the inspection result value.

Sample

Name and address of the plant

Signature by Quality Control Section

CU

×100 　　　＊1×1000

NI

20 MAX55 MAX

160

MAX

35 MAX35 MAX

47 MAX

CRMOCEQ

V

H×B×t 1/t2

00.0M

◯◯

◯◯

◯◯

◯◯◯

◯◯◯

◯◯◯

490

630

＊1：CEQ=C+

MN/6+

（CR+MO+V）/5+

（NI+CU）/15

◯◯◯◯◯

◯◯ - ◯◯◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯

◯◯◯

◯◯ - ◯◯◯◯

＊＊

＊

12TOKYO STEEL

Notes on handling, storage and transportation

How to check our products

■ Handling Precautions・Welding, fusing, polishing, etc. to perform fume, dust, etc., wear appropriate protective equipment.

Also, when fumes, dust, etc. occur, perform the necessary local exhaust system, general ventilation.

・Because of heavy objects, pay attention to falls, rolling, collapsing loads, falling etc.

・Do not contact, inhale or swallow.

・Do not get in your eyes.

・Because the cut end face is sharp, wear protective gloves for handling.

■ Storage precautions・Avoid contact with water leaks, acids / alkalis or substances containing them.

・Avoid sudden temperature change and environment of high temperature and humidity.

・In the storage place, facilities for daylighting, lighting and ventilation necessary for storage and handling are

set up.

■ Shipping Precautions・It does not correspond to international controlled material concerning transportation.

・Since it is a heavy item, it should not collapse.

・To prevent permeation of rainwater and the like, it is desirable to coat a sheet or the like.

■ Inspection certificate・Our products are manufactured appropriately based on Korean Industry Standards (KS), detailed quality

information can be confirmed by "Inspection certificate" shown on page 11.

－Chemical components: C, Si, Mn, P, S, etc.

－Test results on mechanical properties: tensile test, bending test, impact test etc.

■ How to check whether it is counterfeit・By reading the QR code of the label described on page 9 with the corresponding device, you can confirm that it

is our product.

MEMOMEMO

14TOKYO STEEL13 TOKYO STEEL

MEMOMEMO

14TOKYO STEEL13 TOKYO STEEL

KS（Korean Standard）version

※This catalog conforms to the Korean Industrial Standards as of September 30, 2018. The Korean Industrial Standards may be revised after catalog publication. In that case, please refer separately to the latest Korean Industrial Standards specification content.※Technical information such as the characteristic value described in this catalog does not mean any guarantee except specification value.※Since this catalog is subject to change without notice in the future, please contact the department in charge for the latest information.※Please be advised that no responsibility will be incurred for damages caused by misuse of technical information described in this catalog etc.

HP http://www.tokyosteel.co.jp

For ordering and inquiries, please contact the following.

Head office

Sales OfficesOsaka branch office

Nagoya branch office

Kyushu branch office

Okayama branch office

Utsunomiya branch office

PlantsTahara Plant

Okayama Plant

Kyushu Plant

Utsunomiya Plant

SteelCenterTakamatsu SteelCenter

Kasumigaseki-Tokyu Bldg 15F, 3-7-1, Kasumigaseki, Chiyoda-ku, Tokyo 100-0013, JapanTEL.03-3501-7721　FAX.03-3580-8859（representative）TEL.03-3501-3255(Steel Sheet Section・Building Material Development Division)　FAX.03-3580-8859(Common sales)TEL.03-3501-3223(Steel Sheet Section・Steel Sheet Development Division)

Osaka Kokusai Bldg. 3F,2-3-13, Azuchi-cho,Chuo-ku, Osaka-shi Osaka 541-0052, JapanTEL.06-6264-1368　FAX.06-6264-6396Nittochi Nagoya Bldg. 7F,2-1-1, Sakae,Naka-ku Nagoya-shi Aichi 460-0008, JapanTEL.052-203-0855　FAX.052-203-3021Located at Kyushu PlantTEL.093-791-5988　FAX.093-701-3581Located at Okayama PlantTEL.086-455-7169　FAX.086-455-3105Located at Utsunomiya PlantTEL.028-670-6235　FAX.028-670-6238

2-1-3, Shirahama,Tahara-shi, Aichi 441-3436, JapanTEL.0531-24-0810　FAX.0531-24-08184-1-1, Minamise,Kurashiki-shi, Okayama 712-8055, JapanTEL.086-455-7151　FAX.086-455-31053-5-1, Minami Futajima,Wakamatsu-ku, Kitakyushu-shi,Fukuoka 808-0109, JapanTEL.093-791-2635　FAX.093-791-263911-1, Kiyohara-kogyo-danchi,Utsunomiya-shi, Tochigi 321-3231, JapanTEL.028-670-5607　FAX.028-670-5608

5-1-1, Asahi-machi,Takamatsu-shi, Kagawa 760-0065, JapanTEL.087-822-3111　FAX.087-822-3117