1、Designation:A992/A992M-11INTERNATIONALStandard Specification forStructural Steel ShapesThis 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 number
2、in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope4.Materials and Manufacture1.1 This specification covers rolled steel structural shapes4.1 The steel shall be killed,and such shall be confirmed byf
3、or use in building framing or bridges,or for general structurala statement of killed steel on the test report,or by a report onpurposes.the presence of a sufficient quantity of a strong deoxidizing1.2 Supplementary requirements are provided for use whereelement,such as silicon at 0.10%or higher,or a
4、luminum atadditional testing or additional restrictions are required by the0.015 or higher.purchaser.Such requirements apply only when specified in the4.2 The steelmaking practice used shall be one that pro-purchase order.duces steel having a nitrogen content not greater than 0.015%1.3 When the stee
5、l is to be welded,a welding procedureand includes the addition of one or more nitrogen-bindingsuitable for the grade of steel and intended use or service is toelements,or one that produces steel having a nitrogen contentbe utilized.See Appendix X3 of Specification A6/A6M fornot greater than 0.012(wi
6、th or without the addition ofinformation on weldability.nitrogen-binding elements).The nitrogen content need not be1.4 The values stated in either inch-pound units or SI unitsreported,regardless of which steelmaking practice was used.are to be regarded separately as standard.Within the text,theSI un
7、its are shown in brackets.The values stated in each5.Chemical Compositionsystem may not be exact equivalents;therefore,each system5.1 The heat analysis shall conform to the requirements inshall be used independently of the other.Combining valuesTable 1.from the two systems may result in non-conforma
8、nce with the5.2 In addition to the elements listed in Table 1,test reportsstandard.shall include,for information,the chemical analysis for tin.1.5 The text of this specification contains notes or footnotes,Where the amount of tin is less than 0.02%it shall beor both,that provide explanatory material
9、;such notes andpermissible for the analysis to be reported as 0.02%.footnotes,excluding those in tables and figures,do not contain5.3 The steel shall conform on product analysis to theany mandatory requirements.requirements prescribed in Table 1,subject to the productanalysis tolerances in Specifica
10、tion A6/A6M.2.Referenced Documents5.4 The maximum permissible carbon equivalent value shall2.1 ASTM Standards:2be 0.47 for shapes with flange thickness over 2 in.50 mm,A6/A6M Specification for General Requirements for Rolledand 0.45 in other shapes.The carbon equivalent value shallStructural Steel B
11、ars,Plates,Shapes,and Sheet Pilingbe based on heat analysis.The required chemical analysis aswell as the carbon equivalent shall be reported.The carbon3.General Requirements For Deliveryequivalent shall be calculated using the following formula:3.1 Material furnished under this specification shall c
12、on-CE=C+(Mn)/6+(Cr Mo+V)/5+(Ni Cu)/15(1)form to the requirements of the current edition of SpecificationA6/A6M for the ordered material,unless a conflict exists,in6.Tensile Requirementswhich case this specification shall prevail.6.1 The material as represented by the test specimens shallconform to t
13、he requirements for tensile properties prescribed inThis specification is under the jurisdiction of ASTM Committee A01 on SteelTable 2.Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges,Buildings,Rolling Stock and Ships.7.Keyword
14、sCurrent edition approved May 1.2011.Published May 2011.Originallyapproved in 1998.Last previous edition approved in 2006 as A992/A992M-06a7.1 bridges;building framing:shapes;structural steel;D0:10.1520WA0992A0992M-11.welded construction2 For referenced ASTM standards,visit the ASTM website,www.astm
15、.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of A.STMStandards volume information.refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standard.CopyrightASTM Intemational,100 Barr Harbor Drive,PO Box C700.
16、West Conshohocken.PA 19428-2959.United States.14A992/A992M-11TABLE 1 Chemical Requirements(Heat Analysis)ElementComposition,%Carbon,max0.23Manganese,0.50to1.604Silicon,max0.40Vanadium,max0.158Columbium,max0.058Phosphorus,max0.035Sulfur,max0.045Copper,max0.60Nickel,max0.45Chromium,max0.35Molybdenum,m
17、ax0.15Provided that the ratio of manganese to sulfur is not less than 20 to 1,theminimum limit for manganese for shapes with flange or leg thickness notexceeding 1 in.25 mmshall be 0.30%The sum of columbium and vanadium shall not exceed 0.15%.TABLE 2 Tensile RequirementsTensile strength,min ksi MPa6
18、5【450Yield point,ksi MPa50to65345to45014Yield to tensile ratio,max0.858Elongation in 8 in.200 mm.min,18Elongation in 2 in.50 mm,min,%21AA maximum yield strength of 70 ksi 480 MPais permitted for structuralummeore hrtesledomthe web location.c See elongation requirement adjustments under the Tension T
19、ests section ofSpecification A6/A6M.SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall apply only if specified in the purchase order or contract.Standardized supplementary requirements for use at theIn addition,the following optional supplementary require-option of the purchaser are listed i
20、n Specification A6/A6M.ments are suitable for use with this specification.Those that are considered suitable for use with this specifica-S32.Single Heat Bundles.tion are listed by title:S1.Vacuum TreatmentS32.1 Bundles containing shapes or bars shall be from aS2.Product Analysissingle heat of steel.
21、S5.Charpy V-Notch Impact TestS79.Maximum Tensile StrengthS8.Ultrasonic ExaminationS79.1 The maximum tensile strength shall be 90 ksi 620S30.Charpy V-Notch Impact Test for Structural Shapes:MPa.Alternate Core LocationSUMMARY OF CHANGESCommittee A0l has identified the location of selected changes to t
22、his standard since the last issue(A992/A992M-06a)that may impact the use of this standard.(Approved May 1,2011.)(Revised 2.1 and 4.1.4A992/A992M-11ASTM Intemational takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of
23、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 every five ye
24、ars 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 technical committe
25、e,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 Conshohocken,PA 19428-2959,Un
26、ited 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/).
