Designation:A469/A469M−07(Reapproved2017)StandardSpecificationforVacuum-TreatedSteelForgingsforGeneratorRotors1ThisstandardisissuedunderthefixeddesignationA469/A469M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversvacuum-treatedbasicelectricsteelforgingsforgeneratorrotors.1.2Supplementaryrequirementsareprovided,bothinthisstandardandinSpecificationA788/A788M,forusewhenadditionaltesting,inspectionorprocessingisrequiredbythepurchaser.1.3Thevaluesstatedineitherinch-poundorSI(metric)unitsaretoberegardedseparatelyasstandards.Withinthetextandtables,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.1.4Unlesstheorderspecifiestheapplicable“M”specifica-tiondesignation,thematerialshallbefurnishedtotheinch-poundunits.2.ReferencedDocuments2.1ASTMStandards:2A275/A275MPracticeforMagneticParticleExaminationofSteelForgingsA341/A341MTestMethodforDirectCurrentMagneticPropertiesofSoftMagneticMaterialsUsingD-CPer-meametersandthePointbyPoint(Ballistic)TestMethodsA370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA418/A418MPracticeforUltrasonicExaminationofTur-bineandGeneratorSteelRotorForgingsA773/A773MTestMethodforDirectCurrentMagneticPropertiesofLowCoercivityMagneticMaterialsUsingHysteresigraphsA788/A788MSpecificationforSteelForgings,GeneralRe-quirements3.OrderingInformationandGeneralRequirements3.1InadditiontotheorderinginformationrequiredbySpecificationA788/A788M,thepurchasershallincludewiththeinquiryandorder,adimensioneddrawingshowingthemechanicaltestspecimenlocations,togetherwith:3.1.1Detailsofanyrequiredmagneticpermeabilitytests(6.1).3.1.2Iftheyieldstrengthistobedetermi...
