Designation:A289/A289M−97(Reapproved2013)StandardSpecificationforAlloySteelForgingsforNonmagneticRetainingRingsforGenerators1ThisstandardisissuedunderthefixeddesignationA289/A289M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversnonmagneticalloysteelretain-ingringforgingsforgenerators.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Unlesstheorderspecifiestheapplicable“M”specifica-tiondesignation,thematerialshallbefurnishedtotheinch-poundunits.2.ReferencedDocuments2.1ASTMStandards:2A342/A342MTestMethodsforPermeabilityofFeeblyMagneticMaterialsA370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA531/A531MPracticeforUltrasonicExaminationofTurbine-GeneratorSteelRetainingRingsA788/A788MSpecificationforSteelForgings,GeneralRe-quirementsE45TestMethodsforDeterminingtheInclusionContentofSteelE112TestMethodsforDeterminingAverageGrainSizeE165/E165MPracticeforLiquidPenetrantExaminationforGeneralIndustry3.OrderingInformationandGeneralRequirements3.1MaterialsuppliedtothisspecificationshallconformtotherequirementsofSpecificationA788/A788M,whichout-linesorderinginformation,manufacturingrequirements,test-ingmethodsandretestingprocedures,marking,certification,productanalysisvariation,andadditionalsupplementaryre-quirements.3.2IftherequirementsofthisspecificationareinconflictwiththerequirementsofSpecificationA788/A788M,therequirementsofthisspecificationshallprevail.3.3Supplementaryrequirementsofanoptionalnatureareprovided.Theyshallapplyonlywhenspecifiedbythepur-chaser.4.Manufacture4.1Thesteelshallbemadebytheelectr...
