(11.!bDesignation: A 496-01

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Standard Specification forSteel Wire, Deformed, for Concrete Reinforcement’

This standard is issued under the lixed designation A 49& & number immediately following the designation indicates the year oforiginal adoption or, in the ease of revisio~ tie year of last revision. A number in pammtheses indicates the year of last reapproval.Asuperscript epsilon (6) indicates an editoriat change since the last revision or reapproval.

This standard has been approved for use by agencies of the Deparment of Defense.

1. scope

1.1 This specification covers deformed steel wire which hasbeen cold-worked by drawing, rolling, or both drawing androlling, to be used as produced, or in fabricated form, for thereinforcement of concrete in sizes having nominal cross-sectional areas not less than 6.45 mm2 (0.01 in.2).

1.2 Supplement S1 describes high-strength wire, whichshall be furnished when specifically ordered. It shall bepermissible to furnish high-strength wire in place of regularwire if mutually agreed to by the purchaser and supplier.

1.3 The values statedin either inch-pound units or S1 unitsare to be regarded as standard.Whhin the text the inch-poundunitsare shown in brackets.The value statedin each system arenot exact equivalents; therefore, each system must be usedindependently of the other. Combining w-dues may result innonconformance with the specification.

2. Referenced Documents

2.1 ASTM Stanabrds:A 370 Test Methods and Definitions for Mechanical Testing

of Steel Products2A 497 Specification for Steel Welded Wm Reinforeement,

Deformed, for Concrete3A 700 Practices for Packaging, Marking, and Loading

Methods for Steel Products for Domestic Shipment4E 83 Practice for Verification and Classification of Exten-

someters52.2 klilita~ Standards:MIL-STD- 129 Marking for Shipment and StorageGMIL-STD-163 Steel Mill Products Preparation for Ship-

ment and StorageG

‘ This spsxitication is under the jurisdiction of ASTM ConrmitteeAO1on SteeLStairdess Steel, snd Elated Alloysaod is the direct responsibility of SubcommitteeAO1.050n Steel Reinforeernent.

Current edition approved Dee. 10, 2001. Published Febmary 2002. OriginaUypublished as A 4% – 64. Last previous edition A 4% – 97a.

2Annual Book of ASTM Stan&&, Vol 01.033Annaal Book of ASTM Stanhris, Vol 01.044Annaal Book of ASTM Stanakrds, Vol 01.055Annual Book of ASTM Ston&m!r, Vol 03.01‘Available from StandardizationDocuments OrderD& Building 4, Section D,

700 Robbins Ave., Philadelphia, PA 19111-5094

2.3 Fe&ral Stan&rd:Fed. Std. No. 123 Marking for Shipments (Civil Agencies)G2.4 Other Stanabrd:ACI 318 Building Code Requirements for StrncturtdCon-

crete’

3. Terminology

3.1 De~nitions of Terms Specijic to This Stanalzrd:3.1.1 deformed steel wire for reinfoxernent-as used within

the scope and intent of this specification, shall mean anycold-workeL deformed steel wire intended for use as rein-forcement in concrete construction, the wire surface havingdeformations that (1) inhibit longitudinal movement of thewire in such construction, and (2) conform to the provisions ofSection 5. It shall be permissible for the deformations to beraised indented.

3.1.2 size number-as used in this specification, refers tothe numerical designation of the wire as tabulated in Table 1and Table 2 under the column headed Deformed Wme SizeNumber, or a number indicating the nominal eross-seetionalarea of the deformed wire in hundredths of a square inch.

4. Ordering Information

4.1 When deformed wire is ordered by size number, thedimensional requirements shall be as given in Table 1. Whendeformed wire is ordered to dimensions other than the sizesshown, the nominal dimensions shrdl be developed from theapplicable unit weight per foot of the section.

4.2 Orders for material to this specification should includethe following information

4.2.1 Quantity (weight),4.2.2 Name of material (deformed steel wire for concn%e

reinforcement),4.2.3 Wm diameter (see Table 1 and Table 2),4.2.4 Packaging (see Seetion 16), and4.2.5 ASTM designation and year of issue.4.2.6 Special requirements, if any. (See Supplement S1.)

NOTE1—A typical ordering description is as follows: 50 000 lbdeformed steel wire for concrete reinforvemett~ sire No. D-12, on pipe

7Available from American Concrete Institute, P.O. Box 9094, FarnringtonHills,M 4s333-9094.

Copyttghl O AS7M International, 1CO BaIT Hsrbor Dtive, PO Box C700, West Conshohaeken, PA 1942S-2959, UnRed States.

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------TABLE 1 Dhnsnsionsl Rsquirsmsnts for Dsformsd WIrs for Concrsts Rsinforcsmsnt in S1 Units

Nominal Dlmensiona Deformation Requirements

Deformedwire

(D in2)(x 100)

Unit Wt.SizeA,B,c

Diamete~ Cross-Sectional Area2E Perimeter Spacing, Spacing, Min. Avg. Height of

Maximum Mtnimum Deformations

k~m (Ibslft.) mm (in.) mm2 iin.2) mm fin.) mm (in \ mm (in.) mmF (in.)., .,MD 25

,.. ...

(D 3.9) 0.1962 (0.133) 5.60 (0.220) 25MD 30 (D 4.6

(0.039) 17.59 (0.692 7.24 (0.285) 4.62 (0.162)0.2355 (0.156) 6.20 (0.244) 30

MD 35 (D 5.4)(0.046) 19.48

0.2747 (0.164) 6.70(0.767) 7.24 (0.285) 4.62

(0.264) 35 (0.054)(0.1 82)

MD 40 (D 6.2)21.05

0.3140 (0.211)(0.629) 7.24

7.10(0.265) 4.62

(0.280) 40 (0.062)(0.1 82)

MD 45 (D 7.0)22.31

0.3532 (0.236)(0.876) 7.24

7.60(0.285) 4.62

(0.299) 45 (0.070)(0.1 62)

MD”50 (D 7.7)23.66 (0.940) 7.24 (0.285) 4.62 (0.1 62)

0.3925 (0.262) 6.00 (0.315) 50MD 55 (D 8.5)

(0.077) 25.130.4317 (0.269) 6.40

(0.989) 7.24 (0.285) 4.62(0.331) 55 (0.065)

(0.162)

MD 60 (D 9.3)26.39

0.4709 (0.316)(1 .039) 7.24

6.70(0.285) 4.62

(0.343) 60 (0.093)(0.1 82)

MD 65 (D 10.1)27.33

0.5102 (0.343) 9.10(1 .076) 7.24 (0.285) 4.62

(0.356) 65 (0.101)(0.1 62)

MD 70 (D 10.8)28.59

0.5484 (0.367) 9.40(1.126) 7.24 (0.265) 4.62

(0.370) 70 (0.108)(0.1 82)

MD 60 (D 12.4)29.53

0.6279(1.163) 7.24

(0.422) 10.10(0.265) 4.62

(0.397) 60 (0.124)(0.1 82)

MD 90 (D 13.9)31.70

0.7064 (0.473)(1 .248) 7.24

10.70(0.285) 4.62

(0.421) 80 (0.139)(0.182)

MD 100 (D 15.5)33.62

0.7649 (0.527)(1 .324) 7.24

11.30(0.265) 4.62

(0.445) 100 (0.1 55)(0.162)

36.50 (1 .396) 7.24MD 120 (D 16.6) 0.9419 (0.632) 12.40

(0.265) 4.62(0.486) 120 (0.166)

(0.162)36.96 (1 .534) 7.24

MD 130 (D 20.1) 1.0204 (0.663) 12.90(0.265) 4.62

(0.506) 130 (0.201)(0.162)

40.53 (1 .598) 7.24 (0.285)MD 200 (D 31 .0) 1.5700 (1.054) 15.95

4.62(0.628) 200 (0,310)

(0.182)

MD 290 (D 45.0) 2.2750.27

(1.530)(1 .979) 7.24

19.22(0.265) 4.62

(0.757) 290 (0.460)(0.162)

60.37 (2.376) 7.24 (0.265) 4.62 (0.162) 0.961 (0.0379)

~he number foflowing the prefix indicates the nominal cmea-eectionel area of the deformed wire in square millimeters.%r sizes other than those shown above, the Size Number shell be the number of one hundredtha of a square inch in the nominal area of the deformed wire crc6a section, prefixed by the letters MD.%wae sizes represent the moat readily available sizes in the weldad wire reinforcement industry. Other tire sizes are available and many msnufacturera can produce them in l-mm’ (0.0015+.’) increments.D The nominal diameter of a deformed wfra is equivalent to the diameter of a plain wire having the same mesa per metra se the deformed wfra.%e croaa-seotional area Is baaed on the nominal diameter. The area in square millimetraa maybe calculated by dividing the unit mass in kg/mm by 7x 10+ (mass of 1 mm” of steel or by dividing the unit msss in

Ne

kglm by 0.007649 (mass of steel 1 mm square and 1 m long).%e minimum average height of the deformations shall be determined from measurements made on not leas than two typical deformations from each line of deformations on the wire. Measurements shall be made ~

b

at the center of indentation as deacrfbed in 7.7, ao

0.252 (0.010)0.279 (0.011)0.302 (0.012)0.320 (0.013)0.342 (0.014)0.360 (0.014)0.376 (0.015)0.392 (0.015)0.455 (0.016)0.470 (0.016)0.505 (0.020)0.535 (0.021)0.565 (0.022)0.620 (0.024)0.645 (0.025)0.800 (0.031)

,* ,.:

4PA 496

TABLE 2 Dimensional Requirements for Deformed Steel Wire for Concrete Reinforcement4JS Customary Unita Wire Siiea

Nominal Dimensions Deformation Requirements

Deformed Unit Weight, IXarneter, Cross-eeetionel Perimeter, Maximum, Minimum, Minimum AverageWire Size lb/ft(kg/m) in.(mm)c Area, in.2(mm2)D in.(mm) in.(mm) in.(mm) Height ofNumbe# Deformations,

in.(mm)E,F

D-1D-2D-3D-4D-5D-6D-7D-8D-9D-1 OD-1 1D-12D-1 3D-14D-1 5D-16D-17D-1 80-19D-20D-21D-22D-23D-24D-25D-26D-27D-28D-290-30D-31D-45

0.034 (0.0510)0.066 (0.1 013)0.102 (0.1523)0.136 (0.2025)0.170 (0.2532)0.204 (0.3036)0.236 (0.3546)0.272 (0.4051 )0.0306 (0.4561 )0.340 (0.5063)0.374 (0.5574)0.406 (0.6076)0.442 (0.6586)0.476 (0.7089)0.510 (0.7599)0.544 (0.8101)0.578 (0.861 1)0.612 (0.9114)0.646 (0.9624)0.660 (1.0127)0.714 (1.0637)0.746 (1.1139)0.782 (1.1649)0.816 (1.21 52)0.850 (1.2662)0.864 (1 .3164)0.918 (1.3675)0.952 (1.4177)0.966 (1.4687)1.020 (1.5190)1.054(1 .5700)1.530 (2.276)

0.113 (2.67)0.159 (4.04)0.195 (4.95)0225 (5.72)0.252 (6.40)0.276 (7.01 )0.299 (7.57)0.319 (8.10)0.336 (8.59)0.356 (9.04)0.374 (9.50)0.390 (9.91 )0.406 (10.31)0.422 (10.72)0.437 (11 .10)0.451 (11 .46)0.465 (11 .81)0.478 (12.14)0.491 (12.47)0.504 (12.80)0.517 (13.13)0.529 (13.44)0.541 (13.74)0.553 (14.05)0.564 (14.33)0.575 (14.61)0.566 (14.88)0.597 (15.1 6)0.608 (15.44)0.618 (15.70)0.628 (15.95)0.757 (19.23)

0.01 (6.45)0.02 (12.90)0.03 (19.35)0.04 (25.81 )0.05 (32.26)0.06 (36.71 )0.07 (45.16)0.08 (51 .61 )0.09 (56.96)0.10 (64.52)0.11 (70.97)0.12 (77.42)0.13 (63.87)0.14 (90.32)0.15 (96.i7)0.16 (103.23)0.17 (109.66)0.18 (116.13)0.19 (122.58)0.20 (129.03)0.21 (135.48)0.22 (141 .94)0.23 (146.39)0.24 (154.64)0.25 (161 .29)0.26 (167.74)0.27 (174.19)0.28 (180.64)0.29 (187.10)0.30 (193.55)0.31 &oo.ooj0.45 (290.32) 2.376 (60.Mj 0235 i7.24j ., 0.0379 (0.961 )

0.355 (9.02)0.499 (12.67)0.162 (15.54)0.706 (17.93)0.791 (20.09)0.867 (22.02)0.936 (23.77)1.002 (25.45)1.061 (26.95)1.118 (28.40)1.174 (29.82)1.225 (31.13)1.275 (32.39)1.325 (33.66)1.372 (34.85)1.416 (35.97)1.460 (37.08)1.501 (36.13)1.542 (37.17)1.583 (4021)1.624 (41 .25)1.662 (42.21)1.700 (43.18)1.737 (44.12)1.772 (45.01)1.606 (46.67)1.641 (46.76)1.876 (47.65)1.910 (46.51)1.942 (49.33)1.973 (50.11)

0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0285 (7.24)0285 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7’.24)0.265 (7.24)0.285 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0285 (7.24)0.285 (7.24)0265 (7.24)0.265 (724)0.265 (724)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0.265 (7.24)0265 (7.24)0.265 (724)

0.162 (4.62)0.162 (4.62)0.182 (4.62)0.182 (4.62)0.162 (4.62)0.182 (4.62)0.162 (4.62)0.182 (4.62)0.162 (4.62)0.182 (4.62)0.162 (4.62)0.182 (4.62)0.162 (4.62)0.162 (4.62)0.182 (4.62)0.182 (4.62)0.182 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.182 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.162 (4.62)0.182 (4.62)

0.0045 (0.114)0.0063 (0.1 60)0.0078 (0.196)0.0101 (0.257)0.0113 (0.287)0.0124 (0.315)0.0134 (0.304)0.0143 (0.363)0.0152 (0.366)0.0160 (0.406)0.0187 (0.475)0.0195 (0.495)0.0203 (0.516)0.0211 (0.536)0.0218 (0.554)0.0225 (0.572)0.0232 (0.589)0.0239 (0.607)0.0245 (0.622)0.0252 (0.604)0.0259 (0.656)0.0265 (0.673)0.0271 (0.686)0.0277 (0.704)0.0262 (0.716)0.0266 (0.732)0.0293 (0.744)0.0299 (0.759)0.0304 (0.772)0.0309 (0.765)0.0314 (0.766)

%e number following the prefix indieatee the nominal crose+denal area of the deformed wire in square inches (square millimeters).%or sizes other then those shown above, the Size Number shell be the number of one hundredths of a square inch in the ne+ninal area of the defotmadwk cross

seetion, prefixed by the letter D.%e nominal diameter of a deformed wfre ia equivalent to the diameter of a plain wfre hating the same weight per foot es the deformed wire.%he croee-seetiemel area is based on the nominal diameter. The area in equam inehee may be calculated by dividing the unit weight in pounds by 02633 (weight of

1 in.” of steel), or by dividing the unit weight per linear foot of .spaeimerr in pounds by 3.4 (weghf of steel 1 in. square and 1 foot long).%e minimum average height of the deforrnatfene shall be determined frum meeaurwnenta made on not less then two typiiel deformations horn eeeh line of

deforrnatieme on the tire. Measurements shall be made at the center of indentation se deeerfbed in 6.2.‘%esa sizes reoresent the moat readilv available sizes in the welded wfra minforeamerrt industry. Other wire sizes are avaiiable and many manufaeturers ean DrOdIIIX

them in 0.00154+ (1-mm2) ineremerrfS.-

carriers, polyethylene shrouded, the ASTM A 4% ___

5. Materials and Marmfactnre

5.1 The steel shall be made by one of the followingprocesses open-hearth, electric fnrnaee, or basic oxygen.

5.2 The deformed steel wire shall be produced from rods orbars that have been hot rolled from billets.

6. Requirements

6.1 Deformations shall be spaced along the wim at asubstantially uniform distance and shall be symmetricallydisposed around the perimeter of the section. The deformationson all longitudinal lines of the wire shall be similar in size andshape. A minimum of 25 YO of the total surface area shall bedeformed by measurable deformations.

6.2 Deformed wire shall have two or mom lines of &for-mations.

6.3 The average longitudinal spacing of deformations shallbe not less than 3.5 nor more than 5.5 deformations per inch ineach line of deformations on the wire.

6.4 The minimum average height of the center of typicaldeformations based on the nominal wire diameters shown inTable 1 and Table 2 shall be as follows

Wmsizss . .MnunwnAverage Height of Deformations,Percent of Nominal Wm Diarneta

D-3andtinex 4

Coarser than D-3 through D-10 4 1~

Coarserthrlr)-lo 5

6.5 The deformations shall be placed in respect to the axisof the wire so that the included angle is not less than 45°; or ifdeformations are curvilinear, the angle formed by the trans-verse axis of the deformation and the wire axis shall be not lessthan 45°. Where the line of deformations forms an includedangle with the axis of the wire from 45 to 70° inclusive, thedeformations shall alternatelyreverse in direetion on each side,or those on one side shall be reversed in direction from thoseon the opposite side. Where the line of deformations is over70°, a reversal in direction is not required.

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7. Dmensions

7.1 The average spacing of deformations shall be deter-mined by dividing a measured length of the wire specimen bythe number of individual deformations in any one row ofdeformations on any side of the wire specimens. A measuredlength of the wire specimen shall be considered the distancefrom a point on a deformation to a corresponding point on anyother deformation in the same line of deformations on the wire.

7.2 The minimum average height of deformations shall bedetermined from measurements made on not less than twotypical deformations from each line of deformations on thewire. Measurementsshallbe made atthe center of indentations.

8. Mechanical Property Requirements

8.1 Tension Tests:8.1.1 When tested as described in Test Methods and Defi-

nitions A 370, the material, except as specified in 8.1.2 shallconform to the tensile property requirements in Table 3, basedon nominal area of wire.

8.1.2 The yield stmmgthshall be determined as described inTest Methods and Definitions A 370 at an extension of 0.5 % ofgage length. The manufacturer is not required to test for yieldstnmgth, but is responsible for supplying a product that willmeet the stipulated limit when tested in conformance with theprovisions of 13.3. For determiningg the yield strength use aClass B-1 extensometer as described in Practice E 83. Theextensometer should be removed from the specimen after theyield strength has been determined.

8.1.3 For material to be used in the fabrication of weldedwire reinforcement, the tensile and yield strength propertiesshall conform to the requirements given in Table 4, based onnominal area of the wire.

8.1.4 The material shall not exhibit a definite yield point asevidenced by a distinct drop of the beam or halt in the gage ofthe testing machine prior to reaching ultimatetensile load. Thepurchase may, at his option, accept this feature as sufficientevidence of compliance with the specitied minimum yieldstrength tests covered in 13.3

8.2 Bend Test—The bend test specimen shall stand beingbent at room temperaturethrough 90° without cracking on theoutside of the bent portion, as prescribed in Table 5.

9. Permis,4ble Variation in Weight

9.1 The permissible variation in weight of any deformedwire is k6 % of its nominal weight. The theoretical weightashown in Table 1, or similar calculations on unlisted sizes, shallbe uwd to establish the variation.

10. Workmanship, Ftish, and Appearance

10.1 The wire shallbe free of detrimentalimperfections andshall have a workmanlike finish.

10.2 Rust, surface seams, or surface irregularities shall notbe a cause for rejection provided the requirementsof 10.3 am

TABLE 3 Tension Test Requirements

psi (MPa) minTensile strength a5 OCCJ(5s5)Yield strangth 75000 (515)

TABLE 4 Tension Test Requirements (Material for Welded WrreReinforeernent)

psi (MPa) minTensile strength So 000 (550)Yield stran@- 70000 @r35j

TABLE 5 Bend Test Reouiremente

Size Number of Wire Bend TestO-6 and smaller Bend around a pin the diameter Ihat is aqual to

twice flw diameter of the specimenCoarser than 0-6 Bend around a pin ths diameter that is equal to

four times the diameter of tie specimen

met, and the minimum dimensions and mechanical propertiesof a hand --brushed test specimen are not less than therequirements of this specification.

10.3 Wm intended for welded wire reinforcement shall besufficiently tkee of rust and drawing lubricant, so as not tointerfere with electric resistamx welding.

11. sampling11.1 Test specimens for testing mechanical properties shall

be full wire sections and shall be obtained from the ends of thewire product as drawn or rolld or both drawn and rolled. Thespecimens shall be of sufficient length to perform testingdescribed in 8.1 and 8.2.

11.2 If any test specimen exhibita obvious isolated imper-fections not representative of the pmduc~ it may be discardedand another specimen substituted.

12, Number of T-

12.1 One tension and one bend test shall be made from each9072 kg (10 tons) or less of each size of wire or fraction thereofin a 10Gor a total of seven samples, whichever is less. A lotshall consist of all the coils of a single size offered for deliveryat the same time.

13. Inspection

13.1 The inspector representing the purchaser shall havefree entry, at all times while WO* on the contract of thepurchaseris being perform~ to all partsof the manufacturer’swoxks that concern the manufacture of the material ordered.The manufacturer shall afford the inspector all reasonablefacilities to satisfy him that the material is being furnished inaccordance with this specification.

13.2 Except for yield strength,all tests and inspection shallbe made at the place of manufacture prior to shipment, unlessotherwise specified Such tests shall be so conducted as not tointerfere unnecessarily with the operation of the works.

13.3 If the purchaser considers it desirable to detenuinecompliance with the yield stmngtbrequirements in 8.1.3, yieldstrengthtests may be made in a recognized laboratory, or theirrepresentativemay make the test at the mill if such tests do notinterfere unnecessarily with the mill operations.

13.4 For U.S. Government Procurement Only-Except asotherwise speciiied in the contract, thecontractor is responsiblefor the performance of all inspection and test requirementsspecified herein. Except as otherwise specified in the contract,

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4Pthe contractor may use his own or any other suitable facilitiesfor the performance of the inspection and test requirementsspecified herein, unless disapproved by the purchaser at thetime of purchase. The purchaser shall have the right to performany of the inspections and tests at the same frequency as setforth in this specification where such inspection are deemednecessmy to assure that material conforms to prescribedrequirements.

14. Rejection and Retests

14.1 Material that shows detrimental imperfections subse-quent to its acceptance at the manufacturer’s works will berejected, and the manufacturer shall be notified

14.2 Relwating-Rejected materialsshallbe pnxerved for aperiod of at least two weeks from the date of inspection, duringwhich time the manufacturer may make claim for a rehearingand retesting.

15. Certification

15.1 When specified in the purchase order or contract, aproducer’s or supplier’s certification shall be furnished to thepurchaserthat the material was manufactured, sampled, tested,and inspected in accordance with this specification and hasbeen found to meet the requirements. When specified in thepurchase order or contract, a report of the test results shall be

A 496

furnished. The certification shall include the specificationnumber, year-date of issue and revision letter, if any.

16. Packaging and Marking

16.1 The size of the wire, ASTM designation, and name ormark of the manufactmer shall be marked on a tag securelyattached to each coil of wire.

16.2 Unless otherwise specifi~ packaging, marking, andloading for shipment shall be in accordance with PracticesA 700.

16.3 When specified in the contractor order, and for directprocurement by or direct shipment to the U.S. government,when Level A is specilied preservation, packaging, and pack-ing shall be in accordance with the Level A reqtiment ofMILSTD-163.

16.4 When specified in the contract or order, and for thedirect procurement by or direct shipment to the U.S. govern-ment marking for shipment, in addition to requirementsspecified in the contract or order, shall be in accordance withMILSTD-129 for U.S. military agencies and in accordancewith Fed Std. No. 123 or U.S. government civil agencies.

17. Keywords

17.1 concrete reinforcemen~ &formations (indentations);steel wire

SUPPLEMENTARY REQ~S

S1. High-Strength Wn

S1.1 Scope:S 1.1.1 This supplement delineates only those details thatare

relative to high-strength wire and to the mechanical require-mentsfor wire having properties generally as described in thisspecification.

Nom S1. l—Building codes, for example, ACI 318 permit the use ofn%forcement with a yield strength up to 550 MPa (80 000 psi). Forcompatibility with the codes’ design provisions for high-strength rein-foxcernen~ this supplement prescribes requkments for the mechanicalpropertiesof whe that exceed the minimum values for yield strength andtensile strength in Table 3 and Table 4 of this specification

S1.2 Mechanical Property Requirements:S1.2.1 Minimum yield strength shall be specified in the

purchase order in increments of 17.5 MPa (2500 psi). Whentested the yield strength shall be determined at an extension

under load of 0.35 Yo.

Nom S1.2—TO conform to the limit on yield strength in buildingcodes, the minimum yield strength specifmi in the purchase order shouldnot be greater than 80000 psi (55 MPa).

S1.2.2 Minimum tensile strength shallbe70MPa(10000psi) greater than the minimum specified yield strength.

Nom S1.3-A typical order en@ line for minimum yield stnmgth is,’72500 psi minimum yield strength” or “500 MPa minimum yieldstrength.”

S1.3 Certi~c&”on:S1.3. 1 Certification for material produced to this supple-

ment shall include a report of the test results for yield strength,tensile streng@ and bend tests. Frequency of testing shallconform to Section 12 of this specification and Section 12 ofSpecification A 497 as applicable.

ASTM International takes no @eition respecting the validity of any patent rights aeeatted in connection with any item mentioned[n this standard. Users of this standard are ex@wee& advised that determination of the valid~ of any such patant rights, and the riskof infringement of such rights, am enticaly their own responsibility

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