ASTM B777-2007 钨基高密度金属用标准规范

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【英文标准名称】:StandardSpecificationforTungstenBase,High-DensityMetal
【原文标准名称】:钨基高密度金属用标准规范
【标准号】:ASTMB777-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:B10.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:重金属;金属;有色金属;难熔金属;钨
【英文主题词】:high-densitymetal;tungsten
【摘要】:1.1Thisspecificationcoverstherequirementsforfourclassesofmachinable,high-densitytungstenbasemetalproducedbyconsolidatingmetalpowdermixtures,thecompositionofwhichismainlytungsten.Thismaterialspecificationmaybeusedforbarepartsorforpartsthatmaybecoatedwithothermaterialsforprotectionagainstcorrosionandabrasion.1.2IntendedUse8212;Partsmadefromthismaterialareintendedforusessuchasweightsorcounter-balancesinstaticordynamicbalancing,high-speedrotatinginertiamembers,radiationshielding,hypervelocityimpact,andvibration-dampingapplications.1.3SpecialApplications8212;Forparticularapplications,propertiesorrequirementsotherthanthosespecifiedinSections5,6,and7ofthisspecificationmaybeimportant.Thesealloysmaycontainelementswhichmakethemmagnetic.Wherefreedomfrommagneticresponseisrequired,thisshouldbespecifiedinthepurchaseorder.Class4isnotavailableinanon-magneticgrade.Forpurposesofthisspecification,non-magneticmaterialisdefinedasmaterialhavingamaximummagneticpermeabilityof1.05(seeTestMethodB193).Alsoforspecialapplicationsinvolvinglargesections,methodsfordetermininginternalquality,suchasmechanicaltestsonspecimensfromtheselargersectionsorsuitablenondestructivetestsmaybeapplied.Ifrequired,theseadditionaltestsshallbespecifiedinthepurchaseorder.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.
【中国标准分类号】:H63
【国际标准分类号】:77_120_99
【页数】:3P.;A4
【正文语种】: