1、Designation:A615/A615M09b Designation: A615/A615M 12American 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 numb
2、er immediately 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 stan
3、dard has been 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 So
4、ciety of Automotive 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
5、 footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be consideredas requirements of the specification.1.2Bars1.2 Bars are of four minimum yield strength levels: namely, 40 000 280 MPa, 60 000 420 MPa, 75 000 psi 520MPa, and 80 000 550 MPa, d
6、esignated as Grade 40 280, Grade 60 420, Grade 75 520, and Grade 80 550, respectively.1.3Plain1.3 Plain bars, in sizes up to and including 212 in. 63.5 mm in diameter in coils or cut lengths, when ordered shallbe furnished under this specification in Grade 40 280, Grade 60 420, Grade 75 520, and Gra
7、de 80 550. For ductilityproperties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply.Requirements providing for deformations and marking shall not be applicable.NOTE 1Welding of the material in this specification should be approached with
8、 caution since no specific 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 describ
9、es the proper selection of the filler metals and preheat/interpasstemperatures, as well as performance and procedure qualification requirements.1.4 This specification is applicable for orders in either inch-pound units (as Specification A615) or in SI units (as SpecificationA615M).1.5 The values sta
10、ted 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 equivalents; therefore, each system must be used independently of theother. Combining values from the two systems may result i
11、n nonconformance with the specification.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatoryli
12、mitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet PilingA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA510 Specification for General Requirements for
13、Wire Rods and Coarse Round Wire, Carbon SteelA510M Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric)A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for ShipmentA706/A706M Specification for Low-Alloy Steel Deformed and Plai
14、n Bars for Concrete ReinforcementA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications1This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stain
15、less Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05on Steel Reinforcement.Current edition approved Nov. 15, 2009.March 1, 2012. Published December 2009.April 2012. Originally approved in 1968. Last previous edition approved in 2009 asA615/A615M 09ab. DOI: 10.1520/A0
16、615_A0615M-09B. 10.1520/A0615_A0615M-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is n
17、ot an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropria
18、te. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
19、2.2 AWS Standard:3AWS D 1.4/D 1.4M Structural Welding CodeReinforcing Steel2.3 U.S. Military Standard:4MIL-STD-129 Marking for Shipment and Storage2.4 U.S. Federal Standard:4Fed. Std. No. 123 Marking for Shipment (Civil Agencies)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1
20、deformations, ntransverse protrusions on a deformed bar.3.1.2 deformed bar, nsteel bar with protrusions; a bar that is intended for use as reinforcement in reinforced concreteconstruction.3.1.2.1 DiscussionThe surface of the bar is provided with lugs or protrusions that inhibit longitudinal movement
21、 of the barrelative to the concrete surrounding the bar in such construction. The lugs or protusions conform to the provisions of thisspecification.3.1.3 plain bar, nsteel bar without protrusions.3.1.4 rib, nlongitudinal protrusion on a deformed bar.4. Ordering Information4.1 It shall be the respons
22、ibility of the purchaser to specify all requirements that are necessary for material ordered to thisspecification. Such requirements shall include 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 reinforce
23、ment),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 of issue, and4.1.9 Certified mill test reports (if desired). (See Section 16.)5. Material and Manufacture5.1 The bars shall be rolled from properly identif
24、ied heats of mold-cast or strand-cast steel using the electric-furnace,basic-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 anal
25、ysis on test samples taken preferably during the pouring of the heat. Thepercentages of carbon, manganese, phosphorus, and sulfur shall be determined. The phosphorus content thus determined shall notexceed 0.06 %.3Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, ht
26、tp:/www.aws.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.TABLE 1 Deformed Bar Designation Numbers, Nominal Weights Masses, Nominal Dimensions, and Deformation RequirementsBar Designation
27、No.Nominal Weight,lb/ftNominal Mass,kg/mNominal DimensionsADeformation Requirements, in. mmDiameter,in. mmCross-SectionalArea,in.2mm2Perimeter,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
28、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 0.31 199 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.
29、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 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
30、.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 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 21.9AThe nominal dimensions of a deformed bar are equivalent to those of a plain round ba
31、r having the same weight mass per foot metre as the deformed bar.A615/A615M 1226.2 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 shall be spaced along the bar at substantially uniform d
32、istances. 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 deformations forms an included angle with the axis of the bar
33、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 direction shall not be required.7.3 The average spacing or distan
34、ce 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 not exceed 12.5 % of the nominal perimeter of the bar. Whe
35、re 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 the nominal diameter.7.5 The spacing, height, and gap of d
36、eformations 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 number of spaces included in the measurement. The measureme
37、nt 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 involving letters or numbers.8.2 The average height of deforma
38、tions 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 the overall length.8.3 Insufficient height, insufficient c
39、ircumferential 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 conform to the minimum requirements prescribed in Section
40、7. No rejection shall be made on the basis ofmeasurements if fewer than ten adjacent deformations on each side of the bar are measured.NOTE 2As used within the intent of 8.3, the term “lot” shall mean all the bars of one bar size and pattern of deformations contained in an individualshipping release
41、 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 determined by one of the following methods:9.2.1 The yield point shall be det
42、ermined 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.9.2.2Where9.2.2 Where the steel tested does not have a well-defined yield point, the yield strength shall be determined by theoffset method (0.2 % offse
43、t), as described in Test Methods and Definitions A370. A second tensile test result shall also be requiredas indicated in 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
44、stress corresponding to a tensile strain of 0.0035 shall be a minimum of 60 000 psi 420MPa for Grade 60 420, a minimum of 75 000 psi 520 MPa for Grade 75 520, and a minimum of 80 000 psi 550 MPa forGrade 80 550. The value of stress corresponding to a tensile strain of 0.0035 shall be reported in the
45、 test report (16.1.2).TABLE 2 Tensile RequirementsGrade 40280AGrade 60420Grade 75520Grade 80550Tensile strength, min, psi MPa 60 000 420 90 000 620 100 000 690 105 000 725Yield strength, min, psi MPa 40 000 280 60 000 420 75 000 520 80 000 550Elongation in 8 in. 200 mm, min, %Bar Designation No.3 10
46、 11 9 7 74, 5 13, 16 12 9 7 76 19 12 9 7 77, 8 22, 25 . . . 8 7 79, 10, 11 29, 32, 36 . . . 7 6 614, 18 43, 57 . . . 7 6 6AGrade 40 280 bars are furnished only in sizes 3 through 6 10 through 19.A615/A615M 1239.3When9.3 When material is furnished in coils, the test specimen shall be taken from the c
47、oil and straightened prior to placingit in the jaws of the tensile testing machine. Straightening of test specimens shall be done carefully to avoid formation of local sharpbends and to minimize cold work. (See Note 3.)9.3.1Test9.3.1 Test specimens taken from post-fabricated material shall not be us
48、ed to determine conformance to thisspecification.NOTE 3Insufficient straightening prior to attaching the extensometer can result in lower-than-actual yield strength readings. Multiple bendingdistortion from mechanical straightening and fabricating machines can lead to excessive cold work, resulting in higher yield strengths, lower elongationvalues, and a loss of deformation height.9.4The9.4 The percentage of elongation shall be as prescribed in Table 2.10. Bending Requirements10.1 The bend-test specimen shall withstand being bent around a pin without cracking on the outside radius of th
