ASTM A913 A913M-2014 Standard Specification for High-Strength Low-Alloy Steel Shapes of Structural Quality Produced by Quenching and Self-Tempering Process &40 QST&41 《用淬火和自回火工艺制作的.pdf
《ASTM A913 A913M-2014 Standard Specification for High-Strength Low-Alloy Steel Shapes of Structural Quality Produced by Quenching and Self-Tempering Process &40 QST&41 《用淬火和自回火工艺制作的.pdf》由会员分享,可在线阅读,更多相关《ASTM A913 A913M-2014 Standard Specification for High-Strength Low-Alloy Steel Shapes of Structural Quality Produced by Quenching and Self-Tempering Process &40 QST&41 《用淬火和自回火工艺制作的.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: A913/A913M 14Standard Specification forHigh-Strength Low-Alloy Steel Shapes of Structural Quality,Produced by Quenching and Self-Tempering Process (QST)1This standard is issued under the fixed designation A913/A913M; the number immediately following the designation indicates the yearof
2、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.1. Scope*1.1 This specification covers high-strength low-alloy struc-tu
3、ral steel shapes in Grades 50 345, 60 415, 65 450 and 70485, produced by the quenching and self-tempering process(QST). The shapes are intended for riveted, bolted or weldedconstruction of bridges, buildings and other structures.1.2 The QST process consists of in line heat treatment andcooling rate
4、controls which result in mechanical properties inthe finished condition that are equivalent to those attainedusing heat treating processes which entail reheating afterrolling. A description of the QST process is given in AppendixX1.1.3 Due to the inherent characteristics of the QST process,the shape
5、s shall not be formed and post weld heat treated attemperatures exceeding 1100F 600C.1.4 When the steel is to be welded, it is presupposed that awelding procedure suitable for the grade of steel and intendeduse or service will be utilized. See Appendix X3 of Specifica-tion A6/A6M for information on
6、weldability.1.5 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently of the other. Combining v
7、alues from thetwo systems may result in nonconformance with this specifi-cation.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars, Plates, Shapes, and Sheet PilingA673/A673M Specification for Sampling Procedure for Im-pact Testin
8、g of Structural SteelA898/A898M Specification for Straight Beam UltrasonicExamination of Rolled Steel Structural Shapes3. General Requirements for Delivery3.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A6/A6M.4. Ma
9、terials and Manufacture4.1 The shapes shall be produced by the quenching andself-tempering process (QST). Self-tempering temperatureshall be a minimum of 1100F 600C and the self-temperingtemperature for the material represented shall be reported onthe mill test report. See Appendix X1 for Process De
10、scription.4.2 For grades 60 415, 65 450, and 70 485, therequirements for fine austenitic grain size in SpecificationA6/A6M shall be met.5. Chemical Composition5.1 The chemical analysis of the heat shall conform to therequirements prescribed in Table 1.5.2 The steel shall conform on product analysis
11、to therequirements prescribed in Table 1 subject to the productanalysis tolerances in Specification A6/A6M.6. Mechanical Properties6.1 Tensile PropertiesThe material as represented by thetest specimens shall conform to the tensile properties given inTable 2.6.2 Charpy V-notch tests shall be made in
12、accordance withSpecification A673/A673M, Frequency H:6.2.1 The test results of full-size specimens shall meet anaverage value of 40 ft-lbf 54 J at 70F 21C.6.2.1.1 Test reports for every heat supplied are required.6.2.2 Charpy V-notch test requirements exceeding the valuespecified in 6.2.1 or lower t
13、est temperatures are subject toagreement between the purchaser and the producer.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges, Buildings, Rolling S
14、tock and Ships.Current edition approved May 1, 2014. Published May 2014. Originallyapproved in 1993. Last previous edition approved in 2011 as A913/A913M 11.DOI: 10.1520/A0913_A0913M-14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceas
15、tm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary 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 Sta
16、tes17. Maximum Carbon Equivalent Requirement7.1 The carbon equivalent on heat analysis shall not exceedthe limits listed in this section. The chemical analysis (heatanalysis) of the elements that appear in the carbon equivalentformula and the actual carbon equivalent shall be reported.Carbon equival
17、ent limitsGrade 50 345: 0.38 %Grade 60 415: 0.40 %Grade 65 450: 0.43 %Grade 70 485: 0.45 %7.2 Calculate the carbon equivalent using the followingequation:CE 5 C1Mn/61Cr1Mo1V!/51Cu1Ni!/158. Keywords8.1 high-strength low-alloy steel; QST; quenching and self-tempering process; steel shapes; structural
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