1、Designation: A615/A615M 12A615/A615M 13 American Association State Highway andTransportation Officials StandardAASHTO No.: M 31Standard Specification forDeformed and Plain Carbon-Steel Bars for ConcreteReinforcement1This standard is issued under the fixed designation A615/A615M; the number immediate
2、ly following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has bee
3、n approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers deformed and plain carbon-steel bars for concrete reinforcement in cut lengths and coils. Steel barscontaining alloy additions, such as with the American Iron and Steel Institute and the Society of Aut
4、omotive Engineers series ofalloy steels, are permitted if the resulting product meets all the other requirements of this specification. The standard sizes anddimensions of deformed bars and their number designations are given in Table 1. The text of this specification references notesand footnotes w
5、hich provide explanatory material. These notes and footnotes (excluding those in tables) shall not be consideredas requirements of the specification.1.2 Bars are of four minimum yield strength levels: namely, 40 000 280 MPa, 60 000 420 MPa, 75 000 psi 520 MPa, and80 000 550 MPa, designated as Grade
6、40 280, Grade 60 420, Grade 75 520, and Grade 80 550, respectively.1.3 Plain bars, in sizes up to and including 212 in. 63.5 mm in diameter in coils or cut lengths, when ordered shall be furnishedunder this specification in Grade 40 280, Grade 60 420, Grade 75 520, and Grade 80 550. For ductility pr
7、operties (elongationand bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements providing fordeformations and marking shall not be applicable.NOTE 1Welding of the material in this specification should be approached with caution since no specific
8、provisions have been included to enhanceits weldability. When steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used. Theuse of the latest edition of AWS D 1.4/D 1.4M is recommended. This document describes the proper selection of
9、the filler metals and preheat/interpasstemperatures, as well as performance and procedure qualification requirements.1.4 Requirements for alternate bar sizes are presented in Annex A1. The requirements in Annex A1 only apply when specifiedby the purchaser (see 4.1.10).1.5 This specification is appli
10、cable for orders in either inch-pound units (as Specification A615) or in SI units (as SpecificationA615M).1.6 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shownin brackets. The values stated in each system are not exact e
11、quivalents; therefore, each system must be used independently of theother. Combining values from the two systems may result in nonconformance with the specification.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof t
12、he user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Pil
13、ingA370 Test Methods and Definitions for Mechanical Testing of Steel Products1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.05on Steel Reinforcement.Current edition approved March 1,
14、 2012Oct. 1, 2013. Published April 2012November 2013. Originally approved in 1968. Last previous edition approved in 20092012as A615/A615M 09b.A615/A615M 12. DOI: 10.1520/A0615_A0615M-12. 10.1520/A0615_A0615M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Cust
15、omer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to th
16、e previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary
17、of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1A510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon SteelA510M Specification for General Require
18、ments for Wire Rods and Coarse Round Wire, Carbon Steel (Metric) (Withdrawn2011)3A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for ShipmentA706/A706M Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete ReinforcementA751 Test Methods, Practices, and
19、Terminology for Chemical Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications2.2 AWS Standard:4AWS D 1.4/D 1.4M Structural Welding CodeReinforcing Steel2.3 U.S. Military Standard:5MIL-STD-129 Marking for Shipment and Storage2.4
20、 U.S. Federal Standard:5Fed. Std. No. 123 Marking for Shipment (Civil Agencies)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 deformations, ntransverse protrusions on a deformed bar.3.1.2 deformed bar, nsteel bar with protrusions; a bar that is intended for use as reinforceme
21、nt in reinforced concreteconstruction.3.1.2.1 DiscussionThe surface of the bar is provided with lugs or protrusions that inhibit longitudinal movement of the bar relative to the concretesurrounding the bar in such construction. The lugs or protusions conform to the provisions of this specification.3
22、 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http:/www.aws.org.5 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelph
23、ia, PA 19111-5098, http:/www.dodssp.daps.mil.TABLE 1 Deformed Bar Designation Numbers, Nominal Weights Masses, Nominal Dimensions, and Deformation RequirementsBar DesignationNo.Nominal Weight,lb/ftNominal Mass,kg/mNominal DimensionsA Deformation Requirements, in. mmDiameter,in. mmCross-SectionalArea
24、,in.2 mm2Perimeter,in. mmMaximumAverageSpacingMinimumAverageHeightMaximum Gap(Chord of 12.5 % ofNominal Perimeter)3 10 0.376 0.560 0.375 9.5 0.11 71 1.178 29.9 0.262 6.7 0.015 0.38 0.143 3.64 13 0.668 0.994 0.500 12.7 0.20 129 1.571 39.9 0.350 8.9 0.020 0.51 0.191 4.95 16 1.043 1.552 0.625 15.9 0.31
25、 199 1.963 49.9 0.437 11.1 0.028 0.71 0.239 6.16 19 1.502 2.235 0.750 19.1 0.44 284 2.356 59.8 0.525 13.3 0.038 0.97 0.286 7.37 22 2.044 3.042 0.875 22.2 0.60 387 2.749 69.8 0.612 15.5 0.044 1.12 0.334 8.58 25 2.670 3.973 1.000 25.4 0.79 510 3.142 79.8 0.700 17.8 0.050 1.27 0.383 9.79 29 3.400 5.060
26、 1.128 28.7 1.00 645 3.544 90.0 0.790 20.1 0.056 1.42 0.431 10.910 32 4.303 6.404 1.270 32.3 1.27 819 3.990 101.3 0.889 22.6 0.064 1.63 0.487 12.411 36 5.313 7.907 1.410 35.8 1.56 1006 4.430 112.5 0.987 25.1 0.071 1.80 0.540 13.714 43 7.65 11.38 1.693 43.0 2.25 1452 5.32 135.1 1.185 30.1 0.085 2.16
27、0.648 16.518 57 13.60 20.24 2.257 57.3 4.00 2581 7.09 180.1 1.58 40.1 0.102 2.59 0.864 21.9TABLE 1 Deformed Bar Designation Numbers, Nominal Weights Masses, Nominal Dimensions, and Deformation RequirementsBar DesignationNo.Nominal Weight,lb/ftNominal Mass,kg/mNominal DimensionsA Deformation Requirem
28、ents, in. mmDiameter,in. mmCross-SectionalArea,in. 2 mm2Perimeter,in. mmMaximumAverageSpacingMinimumAverageHeightMaximum Gap(Chord of 12.5 % ofNominal Perimeter)3 10 0.376 0.560 0.375 9.5 0.11 71 1.178 29.9 0.262 6.7 0.015 0.38 0.143 3.64 13 0.668 0.994 0.500 12.7 0.20 129 1.571 39.9 0.350 8.9 0.020
29、 0.51 0.191 4.95 16 1.043 1.552 0.625 15.9 0.31 199 1.963 49.9 0.437 11.1 0.028 0.71 0.239 6.16 19 1.502 2.235 0.750 19.1 0.44 284 2.356 59.8 0.525 13.3 0.038 0.97 0.286 7.37 22 2.044 3.042 0.875 22.2 0.60 387 2.749 69.8 0.612 15.5 0.044 1.12 0.334 8.58 25 2.670 3.973 1.000 25.4 0.79 510 3.142 79.8
30、0.700 17.8 0.050 1.27 0.383 9.79 29 3.400 5.060 1.128 28.7 1.00 645 3.544 90.0 0.790 20.1 0.056 1.42 0.431 10.910 32 4.303 6.404 1.270 32.3 1.27 819 3.990 101.3 0.889 22.6 0.064 1.63 0.487 12.411 36 5.313 7.907 1.410 35.8 1.56 1006 4.430 112.5 0.987 25.1 0.071 1.80 0.540 13.714 43 7.65 11.38 1.693 4
31、3.0 2.25 1452 5.32 135.1 1.185 30.1 0.085 2.16 0.648 16.518 57 13.60 20.24 2.257 57.3 4.00 2581 7.09 180.1 1.58 40.1 0.102 2.59 0.864 21.9A The nominal dimensions of a deformed bar are equivalent to those of a plain round bar having the same weight mass per foot metre as the deformed bar.A615/A615M
32、1323.1.3 plain bar, nsteel bar without protrusions.3.1.4 rib, nlongitudinal protrusion on a deformed bar.4. Ordering Information4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for material ordered to thisspecification. Such requirements shall includ
33、e but are not limited to the following:4.1.1 Quantity (weight) mass,4.1.2 Name of the material (deformed and plain carbon-steel bars for concrete reinforcement),4.1.3 Size,4.1.4 Cut lengths or coils,4.1.5 Deformed or plain,4.1.6 Grade,4.1.7 Packaging (see Section 20),4.1.8 ASTM designation and year
34、of issue, and4.1.9 Certified mill test reports (if desired). (See Section reports, and16.)4.1.10 Optional requirements of Annex A1, if applicable.5. Material and Manufacture5.1 The bars shall be rolled from properly identified heats of mold-cast or strand-cast steel using the electric-furnace,basic-
35、oxygen, or open-hearth process.6. Chemical Composition6.1 The chemical analysis of each heat of steel shall be determined in accordance with Test Methods, Practices, andTerminology A751. The manufacturer shall make the analysis on test samples taken preferably during the pouring of the heat. Theperc
36、entages of carbon, manganese, phosphorus, and sulfur shall be determined. The phosphorus content thus determined shall notexceed 0.06 %.6.2 A product check, for phosphorus, made by the purchaser shall not exceed that specified in 6.1 by more than 25 %.7. Requirements for Deformations7.1 Deformations
37、 shall be spaced along the bar at substantially uniform distances. The deformations on opposite sides of thebar shall be similar in size, shape, and pattern.7.2 The deformations shall be placed with respect to the axis of the bar so that the included angle is not less than 45. Wherethe line of defor
38、mations forms an included angle with the axis of the bar from 45 to 70 inclusive, the deformations shall alternatelyreverse in direction on each side, or those on one side shall be reversed in direction from those on the opposite side. Where theline of deformations is over 70, a reversal in directio
39、n shall not be required.7.3 The average spacing or distance between deformations on each side of the bar shall not exceed seven tenths of the nominaldiameter of the bar.7.4 The overall length of deformations shall be such that the gap (measured as a chord) between the ends of the deformationsshall n
40、ot exceed 12.5 % of the nominal perimeter of the bar. Where the ends terminate in a rib, the width of the rib shall beconsidered as the gap between these ends. The summation of the gaps shall not exceed 25 % of the nominal perimeter of the bar.The nominal perimeter of the bar shall be 3.1416 times t
41、he nominal diameter.7.5 The spacing, height, and gap of deformations shall conform to the requirements prescribed in Table 1.8. Measurements of Deformations8.1 The average spacing of deformations shall be determined by measuring the length of a minimum of ten spaces and dividingthat length by the nu
42、mber of spaces included in the measurement. The measurement shall begin from a point on a deformation atthe beginning of the first space to a corresponding point on a deformation after the last included space. Spacing measurements shallnot be made over a bar area containing bar marking symbols invol
43、ving letters or numbers.8.2 The average height of deformations shall be determined from measurements made on not less than two typical deformations.Determinations shall be based on three measurements per deformation, one at the center of the overall length and the other twoat the quarter points of t
44、he overall length.8.3 Insufficient height, insufficient circumferential coverage, or excessive spacing of deformations shall not constitute cause forrejection unless it has been clearly established by determinations on each lot (Note 2) tested that typical deformation height, gap,or spacing do not c
45、onform to the minimum requirements prescribed in Section 7. No rejection shall be made on the basis ofmeasurements if fewer than ten adjacent deformations on each side of the bar are measured.A615/A615M 133NOTE 2As used within the intent of 8.3, the term “lot” shall mean all the bars of one bar size
46、 and pattern of deformations contained in an individualshipping release or shipping order.9. Tensile Requirements9.1 The material, as represented by the test specimens, shall conform to the requirements for tensile properties prescribed inTable 2.9.2 The yield point or yield strength shall be determ
47、ined by one of the following methods:9.2.1 The yield point shall be determined by the drop or halt of the gage of the tensile testing machine, where the steel testedhas a sharp-kneed or well-defined type of yield point.9.2.2 Where the steel tested does not have a well-defined yield point, the yield
48、strength shall be determined by the offset method(0.2 % offset), as described in Test Methods and Definitions A370. A second tensile test result shall also be required as indicatedin 9.2.2.1.9.2.2.1 When the offset method is used to determine the yield strength, the material, as represented by the test specimens shallconform to an additional requirement: the stress corresponding to a tensile strain of 0.0035 shall be a minimum of 60 000 psi 420MPa for Gra
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