ASTM-A788

Designation:A788/A788M–10AnAmericanNationalStandardStandardSpecificationforSteelForgings,GeneralRequirements1ThisstandardisissuedunderthefixeddesignationA788/A788M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecification2coversagroupofcommonrequire-mentsthat,unlessotherwisespecifiedintheindividualproductspecification,shallapplytosteelforgingsunderanyofthefollowingspecificationsissuedbyASTM:ASTMDesignationTitleA266/A266MCarbonSteelForgingsforPressureVesselComponentsA288CarbonandAlloySteelForgingsforMagneticRetainingRingsforTurbineGeneratorsA289/A289MAlloySteelForgingsforNonmagneticRetain-ingRingsforGeneratorsA290/A290MCarbonandAlloySteelForgingsforRingsforReductionGearsA291/A291MSteelForgings,CarbonandAlloy,forPinions,Gears,andShaftsforReductionGearsA336/A336MAlloySteelForgingsforPressureandHigh-TemperaturePartsA372/A372MCarbonandAlloySteelForgingsforThin-WalledPressureVesselsA427/A427MWroughtAlloySteelRollsforColdandHotReductionA469/A469MVacuum-TreatedSteelForgingsforGeneratorRotorsA470/A470MVacuum-TreatedCarbonandAlloySteelForgingsforTurbineRotorsandShaftsA471/A471MVacuum-TreatedAlloySteelForgingsforTur-bineRotorDisksandWheelsA504/A504MWroughtCarbonSteelWheelsA508/A508MQuenchedandTemperedVacuum-TreatedCarbonandAlloySteelForgingsforPres-sureVesselsA521/A521MSteel,Closed-ImpressionDieForgingsforGeneralIndustrialUseA541/A541MQuenchedandTemperedCarbonandAlloySteelForgingsforPressureVesselCompo-nentsA579/A579MSuperstrengthAlloySteelForgingsA592/A592MHigh-StrengthQuenchedandTemperedLow-AlloySteelForgedFittingsandPartsforPressureVesselsA646/A646MPremiumQualityAlloySteelBloomsandBil-letsforAircraftandAerospaceForgingsA649/A649MForgedSteelRollsUsedforCorrugatingPa-perMachineryA668/A668MSteelForgings,CarbonandAlloy,forGeneralIndustrialUseA711/A711MSteelForgingStockA723/A723MAlloySteelForgingsforHigh-StrengthPres-sureComponentApplicationA729/A729MAlloySteelAxles,HeatTreated,forMassTransitandElectricRailwayServiceA765/A765MCarbonSteelandLow-AlloySteelPressure-Vessel-ComponentForgingswithManda-toryToughnessRequirementsA768/A768MVacuum-Treated12%ChromiumAlloySteelForgingsforTurbineRotorsandShaftsA837/A837MSteelForgings,Alloy,forCarburizingApplica-tionsA859/A859MAge-HardeningAlloySteelForgingsforPres-sureVesselComponentsA891/A891MPrecipitationHardeningIronBaseSuperalloyForgingsforTurbineRotorDisksandWheelsA909/A909MSteelForgings,Microalloy,forGeneralIndus-trialUseA940/A940MVacuumTreatedSteelForgings,Alloy,Differ-entiallyHeatTreated,forTurbineRotorsA965/A965MSteelForgings,Austenitic,forPressureandHighTemperaturePartsA982/A982MSteelForgings,Stainless,forCompressorandTurbineAirfoilsA983/A983MSpecificationforContinousGrainFlowForgedCarbonandAlloySteelCrankshaftsforMediumSpeedDieselEnginesA986/A986MMagneticParticleExaminationofContinuousGrainFlowCrankshaftForgingsA1021/A1021MMartensiticStainlessSteelForgingsandForgingStockforHigh-TemperatureSer-viceA1048/A1048MPressureVesselForgings,AlloySteel,HigherStrengthChromium-Molybdenum-TungstenforElevatedTemperatureServiceA1049/A1049MStainlessSteelForgings,Ferritic/Austenitic(Duplex),forPressureVesselsandRelatedComponents1.2Incaseofconflictinrequirements,therequirementsoftheindividualproductspecificationsshallprevailoverthoseofthisspecification.1.3Thepurchasermayspecifyadditionalrequirements(see4.2.3)thatdonotnegateanyoftheprovisionsofeitherthisspecificationoroftheindividualproductspecifications.Theacceptanceofanysuchadditionalrequirementsshallbedependentonnegotiationswiththesupplierandmustbeincludedintheorder.1.4If,byagreement,forgingsaretobesuppliedinapartiallycompletedcondition,thatis,alloftheprovisionsof1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.06onSteelForgingsandBillets.CurrenteditionapprovedNov.15,2010.PublishedDecember2010.Originallyapprovedin1984.Lastpreviouseditionapprovedin2008asA788/A788M–08a.DOI:10.1520/A0788_A0788M-10.2ForASMEBoilerandPressureVesselCodeapplications,seerelatedSpecifi-cationSA–788inSectionIIofthatcode.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.CopyrightASTMInternationalProvidedbyIHSunderlicensewithASTMLicensee=GEEnergy/9993942001NotforResale,01/19/201120:34:55MSTNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,`,`,``,,`,`,`,`,`,`,,`,``-`-`,,`,,`,`,,`---theproductspecificationhavenotbeenfilled,thenthematerialmarking(seeSection17)andcertification(seeSection16)shallreflecttheextenttowhichtheproductspecificationrequirementshavebeenmet.1.5AsnotedintheCertificationSection(16),thenumberandyeardateofthisspecification,aswellasthatoftheproductspecification,arerequiredtobeincl