1、Designation:A992/A992M11(Reapproved 2015)Standard Specification forStructural Steel Shapes1This standard is issued under the fixed designation A992/A992M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A num
2、ber in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers rolled steel structural shapesfor use in building framing or bridges,or for general structuralpurposes.1.2 Suppleme
3、ntary requirements are provided for use whereadditional testing or additional restrictions are required by thepurchaser.Such requirements apply only when specified in thepurchase order.1.3 When the steel is to be welded,a welding proceduresuitable for the grade of steel and intended use or service i
4、s tobe utilized.See Appendix X3 of Specification A6/A6M forinformation on weldability.1.4 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 may not be exact equivalents;t
5、herefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.1.5 The text of this specification contains notes or footnotes,or both,that provide explanatory material;such notes andfootnotes,excluding those in tables
6、and figures,do not containany mandatory requirements.2.Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars,Plates,Shapes,and Sheet Piling3.General Requirements For Delivery3.1 Material furnished under this specification shall con-form
7、 to the requirements of the current edition of SpecificationA6/A6M for the ordered material,unless a conflict exists,inwhich case this specification shall prevail.4.Materials and Manufacture4.1 The steel shall be killed,and such shall be confirmed bya statement of killed steel on the test report,or
8、by a report onthe presence of a sufficient quantity of a strong deoxidizingelement,such as silicon at 0.10%or higher,or aluminum at0.015%or higher.4.2 The steelmaking practice used shall be one that pro-duces steel having a nitrogen content not greater than 0.015%and includes the addition of one or
9、more nitrogen-bindingelements,or one that produces steel having a nitrogen contentnot greater than 0.012%(with or without the addition ofnitrogen-binding elements).The nitrogen content need not bereported,regardless of which steelmaking practice was used.5.Chemical Composition5.1 The heat analysis s
10、hall conform to the requirements inTable 1.5.2 In addition to the elements listed in Table 1,test reportsshall include,for information,the chemical analysis for tin.Where the amount of tin is less than 0.02%,it shall bepermissible for the analysis to be reported as“0.02%.”5.3 The steel shall conform
11、 on product analysis to therequirements prescribed in Table 1,subject to the productanalysis tolerances in Specification A6/A6M.5.4 The maximum permissible carbon equivalent value shallbe 0.47%for shapes with flange thickness over 2 in.50 mm,and 0.45%in other shapes.The carbon equivalent value shall
12、be based on heat analysis.The required chemical analysis aswell as the carbon equivalent shall be reported.The carbonequivalent shall be calculated using the following formula:CE5 C1Mn!/61Cr1Mo1V!/51Ni1Cu!/15(1)6.Tensile Requirements6.1 The material as represented by the test specimens shallconform
13、to the requirements for tensile properties prescribed inTable 2.7.Keywords7.1 bridges;building framing;shapes;structural steel;welded construction1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Subcom
14、mitteeA01.02 on Structural Steel for Bridges,Buildings,Rolling Stock and Ships.Current edition approved Sept.1,2015.Published September 2015.Originallyapproved in 1998.Last previous edition approved in 2011 as A992/A992M 11.DOI:10.1520/A0992_A0992M-11R15.2For referenced ASTM standards,visit the ASTM
15、 website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 S
16、UPPLEMENTARY REQUIREMENTSSupplementary requirements shall apply only if specified in the purchase order or contract.Standardized supplementary requirements for use at theoption of the purchaser are listed in Specification A6/A6M.Those that are considered suitable for use with this specifica-tion are listed by title:S1.Vacuum TreatmentS2.Product AnalysisS5.Charpy V-Notch Impact TestS8.Ultrasonic ExaminationS30.Charpy V-Notch Impact Test for Structural Shapes:Alternate Core LocationIn addition,the
