1、Designation:A749/A749M14Standard Specification forSteel,Strip,Carbon and High-Strength,Low-Alloy,Hot-Rolled,General Requirements for1This standard is issued under the fixed designation A749/A749M;the number immediately following the designation indicates the yearof original adoption or,in the case o
2、f 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 standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specific
3、ation covers the general requirements forhot-rolled steel strip in coils and cut lengths.It applies tocarbon steel and high-strength,low-alloy steel furnished ashot-rolled.1.2 This specification is not applicable to hot-rolled heavy-thickness carbon sheet and strip coils(Specification A1018/A1018M),
4、cold-rolled carbon steel strip(Specification A109/A109M),high-strength,low-alloycold-rolledsteel(Specifications A606/A606M and A1008/A1008M)or cold-rolled high carbon steel(Specification A684/A684M).1.3 In case of any conflict in requirements,the requirementsof the individual material specification
5、shall prevail over thoseof this general specification.1.4 For the purposes of determining conformance with thisand the appropriate product specification referenced under 2.1,values shall be rounded to the nearest unit in the right handplace of figures used in expressing the limiting values inaccorda
6、nce with the rounding method of Practice E29.1.5 AnnexA1 lists permissible variations in dimensions andmass(Note 1)in SI metric units.The values listed are notexact conversions of the values listed in the inch-pound tables,but instead are rounded or rationalized values.Conformance toAnnex A1 is mand
7、atory when the“M”specification is used.NOTE1The term“weight”is used when inch-pound units are thestandard;however,under SI,the preferred term is“mass.”1.6 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exac
8、t equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.7 This specification and the applicable material specifica-tions are expressed in both inch-pound units and SI units.However,unless the or
9、der specifies the applicable“M”speci-fication designation(SI units),the material shall be furnishedto inch-pound units.2.Referenced Documents2.1 ASTM Standards:2A109/A109M Specification for Steel,Strip,Carbon(0.25Maximum Percent),Cold-RolledA370 Test Methods and Definitions for Mechanical Testingof
10、Steel ProductsA568/A568M Specification for Steel,Sheet,Carbon,Structural,and High-Strength,Low-Alloy,Hot-Rolled andCold-Rolled,General Requirements forA606/A606M Specification for Steel,Sheet and Strip,High-Strength,Low-Alloy,Hot-Rolled and Cold-Rolled,withImproved Atmospheric Corrosion ResistanceA6
11、84/A684M Specification for Steel,Strip,High-Carbon,Cold-RolledA700 Practices for Packaging,Marking,and Loading Meth-ods for Steel Products for Shipment(Withdrawn 2014)3A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel,Stainless Ste
12、el,RelatedAlloys,and FerroalloysA1008/A1008M Specification for Steel,Sheet,Cold-Rolled,Carbon,Structural,High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability,SolutionHardened,and Bake HardenableA1018/A1018M Specification for Steel,Sheet and Strip,Heavy-ThicknessCoils,Hot-Rolled,
13、Carbon,Commercial,Drawing,Structural,High-Strength Low-Alloy,High-StrengthLow-AlloywithImprovedFormability,and Ultra-High Strength1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on
14、Steel Sheet and Strip.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 1981.Last previous edition approved in 2008 as A0749/A749M 08.DOI:10.1520/A0749_A0749M-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at servicea
15、stm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM Internationa
16、l,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights reserved);E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE290 Test Methods for Bend Testing of Material for Ductil-ity2.2 Military Standards:4MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standards:4Fed.Std.No.123 Marking for Shipments(Civil Agencies)Fed.Std.
