ASTM B391-2003 铌和铌合金铸锭标准规范

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【英文标准名称】:StandardSpecificationforNiobiumandNiobiumAlloyIngots
【原文标准名称】:铌和铌合金铸锭标准规范
【标准号】:ASTMB391-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:B10.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:niobium;niobiumalloyingots
【摘要】:1.1Thisspecificationcoversunalloyedandalloyedniobiumingotspreparedbyvacuum-orplasma-arcmeltingorelectron-beammeltingtoproduceconsolidatedmetalforprocessingtovariousmillshapes.Note18212;CommitteeB10hasadopted"niobium"asthedesignationforElementNo.41,formerlynamed"columbium."1.2Thematerialscoveredbythisspecificationare:1.2.1R04200-Type18212;Reactorgradeunalloyedniobium,1.2.2R04210-Type28212;Commercialgradeunalloyedniobium,1.2.3R04251-Type38212;Reactorgradeniobiumalloycontaining1%zirconium,and1.2.4R04261-Type48212;Commercialgradeniobiumalloycontaining1%zirconium.1.3Unlessasingleunitisused,forexampleforceforhardnesstestinginkN,thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thefollowingprecautionarycaveatpertainsonlytothetestmethodportionsofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:77_150_99
【页数】:3P.;A4
【正文语种】: