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【英文标准名称】:StandardSpecificationforNiobiumandNiobiumAlloyStrip,Sheet,andPlate
【原文标准名称】:铌和铌合金带材,薄板和中厚板标准规范
【标准号】:ASTMB393-2009e1
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:铌
【英文主题词】:niobium;niobiumalloyplate;niobiumalloysheet;niobiumalloystrip;Niobiumandniobiumalloys--specifications;UNSR04200(Nb(Cb),unalloyed,reactorgrade);UNSR04210(Nb(Cb),unalloyed,commercialgrade);UNSR04251(Nb(Cb)-Zr,reactorgrade);
【摘要】:Forthepurposesofdeterminingcompliancewiththespecifiedlimitsforrequirementsofthepropertieslistedinthisspecification,anobservedvalueoracalculatedvalueshallberoundedasindicatedinaccordancewiththeroundingmethodofPracticeE29.1.1Thisspecificationcoversfivegradesofwroughtniobiumandniobiumalloystrip,sheet,andplateasfollows:1.1.1R04200-Type18212;Reactorgradeunalloyedniobium,1.1.2R04210-Type28212;Commercialgradeunalloyedniobium,1.1.3R04251-Type38212;Reactorgradeniobiumalloycontaining1%zirconium,and1.1.4R04261-Type48212;Commercialgradeniobiumalloycontaining1%zirconium.1.1.5R04220-Type58212;RRRgradepureniobium.Note18212;Thisgradeofniobiumisusedinsuperconductingapplicationsthatrequiretheultrahighpurity.Becauseofthehighpuritytheproductisconducivetoverylargegrainsthatcanadverselyaffectformability.Itisnotrecommendedforotherapplications.1.2ExceptfordimensionaltolerancesinTable1,thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportionofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H63
【国际标准分类号】:77_150_99
【页数】:6P.;A4
【正文语种】:英语