2013ASMEBoilerandPressureVesselCodeANINTERNATIONALCODEIIMaterialsPartAFerrousMaterialSpecifications(SA-451toEnd)IIMATERIALSPartAFerrousMaterialSpecifications(SA-451toEnd)ASMEBoilerandPressureVesselCommitteeonMaterialsANINTERNATIONALCODE2013ASMEBoiler&PressureVesselCode2013EditionJuly1,2013TwoParkAvenue�NewYork,NY�10016USADateofIssuance:July1,2013ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmer-icanNationalStandardsanditisanAmericanNationalStandard.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanoppor-tunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatpro-videsanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareex-presslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestab-lishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.Theendnotesinthisdocument(ifany)arepartofthisAmericanNationalStandard.ASMEcollectivemembershipmarkCertificationMarkTheaboveASMEsymbolisregisteredintheU.S.PatentOffice.“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineers.TheSpecificationspublishedandcopyrightedbytheAmericanSocietyforTestingandMaterialsarereproducedwiththeSociety’spermission.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.LibraryofCongressCatalogCardNumber:563934PrintedintheUnitedStatesofAmericaAdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,1914;latestedition2013.TheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NY100165990Copyright©2013byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedTABLEOFCONTENTSListofSections................................................................................xForeword.....................................................................................xiiStatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertising............xivStatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItems........................xivSubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommittees.................xvPersonnel.....................................................................................xviiASTMPersonnel...............................................................................xxxiiPreface.......................................................................................xxxiiiSpecificationsListedbyMaterials.................................................................xxxivSpecificationRemoval...........................................................................xliiiSummaryofChanges...........................................................................xlivListofChangesinRecordNumberOrder..........................................................xlviCross-ReferencingandStylisticChangesintheBoilerandPressureVesselCode.........................xlviiiSA-6/SA-6MSpecificationforGeneralRequirementsforRolledStructuralSteelBars,Plates,Shapes,andSheetPiling..........................................1SA-20/SA-20MSpecificationforGeneralRequirementsforSteelPlatesforPressureVessels85SA-29/SA-29MSpecificationforSteelBars,CarbonandAlloy,Hot-Wrought,GeneralRe-quirementsfor..................................................119SA-31SpecificationforSteelRivetsandBarsforRivets,PressureVessels.......139SA-36/SA-36MSpecificationforCarbonStructuralSteel..............................145SA-47/SA-47MSpecificationforFerriticMalleableIronCastings.......................151SA-53/SA-53MSpecificationforPipe,Steel,BlackandHot-Dipped,Zinc-Coated,WeldedandSeamless.......................................................161SA-105/SA-105MSpecificationforCarbonSteelForgings,forPipingApplications..........189SA-106/SA-106MSpecificationforSeamlessCarbonSteelPipeforHigh-TemperatureService197SA-134SpecificationforPipe,Steel,Electric-Fusion(ARC)-Welded(SizesNPS16andOver)..........................................................209SA-135SpecificationforElectric-Resistance-WeldedSteelPipe..................215SA-178/SA-178MSpecificationforElectric-Resistance-WeldedCarbonSteelandCarbon-ManganeseSteelBoilerandSuperheaterTubes..........