ASTM A266A266M-18 英文版

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1、ThisinternationalstandardwasdevelopedinaccordancewithinternationallyrecognizedprinciplesonstandardizationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecommendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrad

2、e(TBT)Committee.Designation:A266/A266M−18StandardSpeciÞcationfor1CarbonSteelForgingsforPressureVesselComponentsThisstandardisissuedunderthefixeddesignationA266/A266M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevisio

3、n,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*A275/A275MPracticeforMagn

4、eticParticleExaminationof2SteelForgings1.1ThisspecificationcoversfourgradesofcarbonsteelA370TestMethodsandDefinitionsforMechanicalTestingforgingsforboilers,pressurevessels,andassociatedequip-ofSteelProductsment.A788/A788MSpecificationforSteelForgings,GeneralRe-NOTE1

5、—Designationshavebeenchangedasfollows:quirementsCurrentFormerlyA1058TestMethodsforMechanicalTestingofSteelGrade1Class1Products—MetricGrade2Class2Grade3Class3E112TestMethodsforDeterminingAverageGrainSizeGrade4Class4E165/E165MPracticeforLiquidPenetrantExaminationfo

6、r1.2SupplementaryrequirementsareprovidedforusewhenGeneralIndustryadditionaltestingorinspectionisdesired.TheseshallapplyE381MethodofMacroetchTestingSteelBars,Billets,onlywhenspecifiedindividuallybythepurchaserintheorder.Blooms,andForgings2.2OtherStandard:1.3Thevalu

7、esstatedineitherSIunitsorinch-poundunits4ASMEBoilerandPressureVesselCode,SectionIXaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,each3.OrderingInformationandGeneralRequirementssystemshallbeusedindependentlyoftheo

8、ther.Combining3.1Inadditiontotheorderinginformationrequiredbyvaluesfromthetwosystemsmayresultinnon-conformanceSpecificationA788/A788M,thepurchasershallincludewi