1、Designation: A656/A656M 12A1A656/A656M 13Standard Specification forHot-Rolled Structural Steel, High-Strength Low-Alloy Platewith Improved Formability1This standard is issued under the fixed designation A656/A656M; the number immediately following the designation indicates the yearof original adopti
2、on 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.1 NOTEEditorially corrected Table 1 footnote information and the Summary of Changes Se
3、ction in April 2013.1. Scope*1.1 This specification covers three types and five strength grades of high-strength low-alloy, hot rolled structural steel plate foruse in truck frames, brackets, crane booms, rail cars, and similar applications. Steels that conform to this specification offerimproved fo
4、rmability. These steels are normally furnished in the as-rolled condition. The type and strength grade furnished is asagreed upon between the manufacturer and the purchaser. The types and strength grades are shown in the tables.1.2 The maximum thickness of plates shall be as follows:Grade Plate Thic
5、kness, max,in. mm50 2 5060 112 4070 1 2580 1 25100 12 131.3 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 equivalents; therefore, each system must be used ind
6、ependently of theother. Combining values from the two systems may result in nonconformance with this specification. See Appendix X3 ofSpecification A6/A6M for information on weldability.1.4 For plates produced from coil and furnished without heat treatment or with stress relieving only, the addition
7、al requirements,including additional testing requirements and the reporting of additional test results, of Specification A6/A6M apply.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling3. General
8、Requirements for Delivery3.1 Plates furnished under this specification shall conform to the requirements of the current edition of Specification A6/A6M,for the specific plate ordered, unless a conflict exists, in which case this specification shall prevail.3.2 Coils are excluded from qualification t
9、o this specification until they are processed into finished plates. Plates produced fromcoil means plates that have been cut to individual lengths from a coil. The processor directly controls, or is responsible for, theoperations involved in the processing of a coil into finished plates. Such operat
10、ions include decoiling, leveling, cutting to length,testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.NOTE 1For plates produced from coil and furnished without heat treatment or with stress relieving only, two test results
11、are to be reported for eachqualifying coil. Additional requirements regarding plate produced from coil are described in Specification A6/A6M.4. Materials and Manufacture4.1 The steel shall be made to fine grain practice.1 This specification is under the jurisdiction of ASTM Committee A01 on Soil and
12、 RockSteel, Stainless Steel and Related Alloys and is the direct responsibility ofSubcommittee A01.02 on Surface and Subsurface CharacterizationStructural Steel for Bridges, Buildings, Rolling Stock and Ships.Current edition approved July 1, 2009Oct. 15, 2013. Published March 2013November 2013. Orig
13、inally approved in 1972. Last previous edition approved in 2012 asA656/A656M 12.A656/A656M 12a1. DOI: 10.1520/A0656_A0656M-12AE01. 10.1520/A0656_A0656M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM
14、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 the previous version. Becauseit may not be technically poss
15、ible 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 of Changes section appears at the end of this standardCop
16、yright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Chemical Composition5.1 Heat analyses shall conform to the chemical requirements given in Table 1. Dependent upon thickness, grade, and intendedapplication, variations in the chemical co
17、mposition are permitted within the limits given in Table 1 for the applicable type. Whereit is of particular importance, the manufacturer should be consulted for specific chemical composition.5.2 Product AnalysisIf a product analysis is made, it shall conform to the requirements given in Table 1, su
18、bject to the productanalysis tolerances of Specification A6/A6M.5.3 Where steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use orservice will be utilized.5.4 Unless specifically ordered, the type is at the discretion of the producer.6. Te
19、nsion Test6.1 The plates as represented by the test specimens shall conform to the requirements given in Table 2.7. Keywords7.1 high-strength low-alloy steel; steel plates; structural applicationsTABLE 1 Chemical RequirementsNOTE 1An ellipsis (. . .) indicates that element is not defined for that Ty
20、pe.Elements Composition, %Type 3 Type 7 Type 8Carbon, maxA 0.18 0.18 0.18Manganese, maxA 1.65 1.65 1.65Phosphorus, max 0.025 0.025 0.025Sulfur, max 0.035 0.035 0.035Sulfur, max 0.030 0.030 0.030Silicon, max 0.60 0.60 0.60Vanadium, max 0.08 0.15B 0.15CNitrogen, max 0.030 0.030 0.030Columbium 0.0080.1
21、0 0.10 maxB 0.10 maxCTitanium, max . . . . . . 0.15CA For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage points above the specified maximum formanganese is permitted, up to a maximum of 1.75 % for Grades 50, 60, and 70; up to a maximum
22、of 1.90 % for Grade 80; and up to a maximum of 2.10 % for Grade100.B The contents of columbium and vanadium shall additionally be in accordance with one of the following:columbium 0.0080.10 % with vanadium 0.008 %;columbium 0.008 % with vanadium 0.0080.15 %; orcolumbium 0.0080.10 % with vanadium 0.0
23、080.15 % and columbium plus vanadium not in excess of 0.20 %.C The sum of columbium, vanadium, and titanium shall be between 0.008 and 0.20 %.A656/A656M 132SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A656/A656M 12a1) that may
24、impact the use of this standard. (Approved Oct. 15, 2013.)(1) Revised Table 1 to modify sulfur limits.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A656/A656M 12) that may impact the use of this standard. (Approved Nov. 1, 2012.
25、)(1) Adjusted Table 1 Footnote A, increasing maximum permissible manganese for grade 100 from 1.90 % to 2.10 %.TABLE 2 Tensile RequirementsAGrade 50345Grade 60415Grade 70485Grade 80550Grade 100690Yield point, min, ksi MPa 50 345 60 415 70 485 80 550 100 690Tensile strength, min, ksi MPa 60 415 70 48
26、5 80 550 90 620 110 760Elongation in 8 in. 200 mm, min, % 20B 17B 14B 12B 12BElongation in 2 in. 50 mm, min, % 23B 20B 17B 15B 15BA See Specimen Orientation under the Tension Tests section of Specification A6/A6M.B For plates wider than 24 in. 600 mm, the elongation requirement is reduced two percen
27、tage points for Grade 50 345 and three percentage points for Grades 60, 70,80, and 100 415, 485, 550, and 690. See Elongation Requirement Adjustments in the Tension Tests section of Specification A6/A6M.A656/A656M 133Committee A01 has identified the location of selected changes to this standard sinc
28、e the last issue(A656/A656M 11) that may impact the use of this standard. (Approved May 1, 2012.)(1) Revised nitrogen limit in Table 1 for all three types.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.
29、 Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed e
30、very five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible tech
31、nical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohoc
32、ken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A656/A656M 134
