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1、AnAmericanNationalStandardDesignation:A78805aStandardSpecificationfor1SteelForgings,GeneralRequirementsThisstandardisissuedunderthefixeddesignationA788;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastre
2、vision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*A592High-StrengthQuenchedandTemperedLow-1.1Thiss
3、pecification2coversagroupofcommonrequire-AlloySteelForgedFittingsandPartsforPressureVesselsmentsthat,unlessotherwisespecifiedintheindividualproductA649/A649MForgedSteelRollsUsedforCorrugatingPa-specification,shallapplytosteelforgingsunderanyoftheperMachineryA668/A668M
4、SteelForgings,CarbonandAlloy,forGeneralfollowingspecificationsissuedbyASTM:IndustrialUseASTMA723/A723MAlloySteelForgingsforHigh-StrengthPres-DesignationTitlesureComponentApplicationA266/A266MCarbonSteelForgingsforPressureVesselA765/A765MCarbonSteelandLow-AlloySteelP
5、ressure-ComponentsVessel-ComponentForgingswithManda-A288CarbonandAlloySteelForgingsforMagnetictoryToughnessRequirementsRetainingRingsforTurbineGeneratorsA768Vacuum-Treated12%ChromiumAlloySteelA289/A289MAlloySteelForgingsforNonmagneticRetain-ForgingsforTurbineRotors
6、andShaftsingRingsforGeneratorsA837SteelForgings,Alloy,forCarburizingApplica-A290CarbonandAlloySteelForgingsforRingsfortionsReductionGearsA859/A859MAge-HardeningAlloySteelForgingsforPres-A291SteelForgings,CarbonandAlloy,forPinions,sureVesselComponentsGears,andShafts
7、forReductionGearsA891PrecipitationHardeningIronBaseSuperalloyA336/A336MAlloySteelForgingsforPressureandHigh-ForgingsforTurbineRotorDisksandTemperaturePartsWheelsA372/A372MCarbonandAlloySteelForgingsforThin-A909SteelForgings,Microalloy,forGeneralIndus-WalledPressure
8、VesselstrialUseA427WroughtAlloySteelRollsforColdandHotA940VacuumTreatedSteelForgings,Alloy,Differ-ReductionentiallyHeatTreated,forTurbineRotorsA4
