Designation:A663/A663M−12StandardSpecificationforSteelBars,Carbon,MerchantQuality,MechanicalProperties1ThisstandardisissuedunderthefixeddesignationA663/A663M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcovershot-wroughtmerchantqualitycarbonsteelbarsandbarsizeshapesproducedtomechanicalpropertyrequirementsandintendedfornoncriticalconstruc-tionalapplications(see7.2).1.2Merchantqualityhot-wroughtsteelbarisavailableinthefollowingrangesofsizeandsection:1.2.1Rounds,squares,andhexagonswithdiametersordistanceacrossflatsunder3in.[75mm].1.2.2Barsizeshapeswithmaximumdimensionsunder3in.[75mm].1.2.3Otherbarsectionswithweightperfootunder40.84lb/ft[60.78kg/m].1.2.4Flats6in.[152mm]orunderinwidth,over0.203in.[over5mminthicknessupto150mminwidth]inthickness,andunder40.84lb/ftor12in.2[77.4cm2]incross-sectionalarea.1.2.5Flatsover6in.to8in.,inclusiveinwidth,0.230in.andover[over6mminthicknessandover50mmthrough200mminwidth]inthicknessandunder40.84lb/ft[60.78kg/m]or12in.2[77.4cm2]incross-sectionalarea.1.2.6Hot-wroughtmerchantqualitycarbonsteelbarssub-jecttomechanicalpropertyrequirementsarehotwroughtinstraightlengthsonly.1.3Someapplicationsmayrequireoneormoreoftheavailabledesignationsshownundersupplementaryrequire-ments.NOTE1—Specialqualityhot-wroughtcarbonsteelbarssubjecttomechanicalpropertyrequirementsarecoveredinSpecificationA675/A675M.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.2.ReferencedDocuments2.1ASTMStandards:2A29/A29MSpecificationforSteelBars,CarbonandAll...
