ASTM A646/A646M-2006 飞机及航空器锻件用优质合金钢大方坯及坯段的标准规范

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【英文标准名称】:StandardSpecificationforPremiumQualityAlloySteelBloomsandBilletsforAircraftandAerospaceForgings
【原文标准名称】:飞机及航空器锻件用优质合金钢大方坯及坯段的标准规范
【标准号】:ASTMA646/A646M-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A01.06
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:aerospaceapplication;alloysteels;consumableelectroderemelted;electricfurnace;ladlerefined;premiumquality;reforgingstock;steelbillets;steelblooms;vacuumdegassed;vacuummelted
【摘要】:1.1Thisspecificationcoverspremiumqualityalloysteelsemifinishedrolledorforgedbloomsandbilletsforreforgingintocriticalpartssuchasaircraftlanding-gearforgings.1.2Bloomsandbillets,hereinafterreferredtoasblooms,aresemifinishedsteelproducts,hotrolledorforgedtoapproximatecross-sectionaldimensions.Bloomsmaybesquare,round,hexagonal,octagonal,orrectangularinsection.Forthepurposesofthisspecification,minimumbloomsectionsizewillbe16in.2[103cm2].1.3Thisspecificationcoverstwobasicclassificationsofsteel:1.3.1ClassI-Vacuum-inductionmeltedorconsumable-electrodevacuummelted,orothersuitableprocesseswhichwillsatisfythequalityrequirementsofthisspecification.1.3.2ClassII-Air-meltedvacuumdegassed.1.3.3ClassIII-Airmeltedelectricfurnaceladlerefinedandvacuumdegassed1.4Thevaluesstatedineitherinch-poundorSI(metric)unitsaretoberegardedseparatelyasstandards.Withinthetextandtables,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.1.5Unlesstheorderspecifiestheapplicable"M"specificationthematerialshallbefurnishedtotheinch-poundunits.
【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:5P.;A4
【正文语种】:英语