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1、Designation:A781/A781M–04aStandardSpecificationforCastings,SteelandAlloy,CommonRequirements,for1GeneralIndustrialUseThisstandardisissuedunderthe®xeddesignationA781/A781M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevi
2、sion,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*systemarenotexactequivalents;therefore,eachsystemmust1.1Thisspeci®cationcoversagroupofrequireme
3、ntsthatbeusedindependentlyoftheother.Combiningvaluesfromthearemandatoryrequirementsofthefollowingsteelcastingtwosystemsmayresultinnonconformancewiththespeci®-speci®cationsissuedbyASTM.Iftheproductspeci®cationcation.Inch-poundunitsareapplicableformaterialorderedtos
4、peci®esdifferentrequirements,theproductspeci®cationshallSpeci®cationA781andSIunitsformaterialorderedtoprevail.Speci®cationA781M.ASTM2.ReferencedDocumentsDesignationTitleofSpecificationA27/A27MSteelCastings,Carbon,forGeneralApplication2.1ASTMStandards:2A128/A128MSte
5、elCastings,AusteniticManganeseA27/A27MSpeci®cationforSteelCastings,Carbon,forA148/A148MSteelCastings,High-Strength,forStructuralPurposesA297/A297MSteelCastings,IronChromiumandIron-Chromium-Nickel,GeneralApplicationHeatResistantforGeneralApplicationA128/A128MSpeci®
6、cationforSteelCastings,AusteniticA447/A447MSteelCastings,Chromium-Nickel-IronAlloy(25-12Class),ManganeseforHigh-TemperatureServiceA486/A486MSteelCastings,forHighwayBridgesA148/A148MSpeci®cationforSteelCastings,HighA494/A494MCastings,NickelandNickelAlloyStrength,fo
7、rStructuralPurposesA560/A560MCastings,Chromium-NickelAlloyA297/A297MSpeci®cationforSteelCastings,Iron-A743/A743MCastings,Iron-Chromium,Iron-Chromium-Nickel,Corro-sionResistant,forGeneralApplicationChromiumandIron-Chromium-Nickel,HeatResistant,forA744/A744MCastings
8、,Iron-Chromium-Nickel,CorrosionResistant,forGeneralApplicationSevereServiceA370TestMethodsandDe®nitionsforMechanicalTestingA747/A747MSteelCastings,Stain
