ASTM F1941-2007 螺纹紧固件电镀层的标准规范(统一的英制螺纹(UN/UNR))

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【英文标准名称】:StandardSpecificationforElectrodepositedCoatingsonThreadedFasteners(UnifiedInchScrewThreads(UN/UNR))
【原文标准名称】:螺纹紧固件电镀层的标准规范(统一的英制螺纹(UN/UNR))
【标准号】:ASTMF1941-2007
【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】:F16.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:铬酸盐;覆层厚度;覆层;耐腐蚀性;紧固件;质量要求;表面处理;螺纹紧固件
【英文主题词】:Electrodepositedcoatings;Screwthread;Threadedfasteners;Unifiedinchscrewthreads(UN/UNR)
【摘要】:1.1Thisspecificationcoversapplication,performanceanddimensionalrequirementsforelectrodepositedcoatingsonthreadedfastenerswithunifiedinchscrewthreads.Itspecifiescoatingthickness,supplementaryhexavalentchromateortrivalentchromitefinishes,corrosionresistance,precautionsformanagingtheriskofhydrogenembrittlementandhydrogenembrittlementreliefforhigh-strengthandsurface-hardenedfasteners.Italsohighlightsthedifferencesbetweenbarrelandrackplatingandmakesrecommendationsastotheapplicabilityofeachprocess.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingprecautionarystatementpertainstothetestmethodportiononly,Section9,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29;J13
【国际标准分类号】:25_220_40
【页数】:10P.;A4
【正文语种】: