Designation:A572/A572M−15AmericanAssociationStateHighwayandTransportationOfficalsStandardAASHTONo.:M223StandardSpecificationforHigh-StrengthLow-AlloyColumbium-VanadiumStructuralSteel1ThisstandardisissuedunderthefixeddesignationA572/A572M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoversfivegradesofhigh-strengthlow-alloystructuralsteelshapes,plates,sheetpiling,andbars.Grades42[290],50[345],and55[380]areintendedforriveted,bolted,orweldedstructures.Grades60[415]and65[450]areintendedforrivetedorboltedconstructionofbridges,orforriveted,bolted,orweldedconstructioninotherapplica-tions.1.2Forapplications,suchasweldedbridgeconstruction,wherenotchtoughnessisimportant,notchtoughnessrequire-mentsaretobenegotiatedbetweenthepurchaserandtheproducer.1.3SpecificationA588/A588MshallnotbesubstitutedforSpecificationA572/A572Mwithoutagreementbetweenthepurchaserandthesupplier.1.4Theuseofcolumbium,vanadium,titanium,nitrogen,orcombinationsthereof,withinthelimitationsnotedinSection5,isrequired;theselectionoftype(1,2,3,or5)isattheoptionoftheproducer,unlessotherwisespecifiedbythepurchaser.(SeeSupplementaryRequirementS90.)1.5ThemaximumthicknessesavailableinthegradesandproductscoveredbythisspecificationareshowninTable1.1.6Whenthesteelistobewelded,aweldingproceduresuitableforthegradeofsteelandintendeduseorserviceistobeutilized.SeeAppendixX3ofSpecificationA6/A6Mforinformationonweldability.1.7Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemistobeusedindependentlyoftheother,withoutcombiningvaluesinanyway.1.8Thetextofthisspecificationcontains...
