ASTM F436-2007a 硬化钢垫圈的标准规范

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【英文标准名称】:StandardSpecificationforHardenedSteelWashers
【原文标准名称】:硬化钢垫圈的标准规范
【标准号】:ASTMF436-2007a
【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】:F16.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:紧固件;硬化的;规范(验收);钢;垫圈
【英文主题词】:carbonsteel;steel;washers;weatheringsteel;Fasteners(metal)specifications;Hardenedsteelwashers;Steelwashers;Washers/washerassembliesspecifications
【摘要】:1.1Thisspecificationcoversthechemical,mechanical,anddimensionalrequirementsforhardenedsteelwashersforusewithfastenershavingnominalthreaddiametersofx00BC;through4in.Thesewashersareintendedforgeneral-purposemechanicalandstructuralusewithbolts,nuts,studs,andotherinternallyandexternallythreadedfasteners.ThesewashersaresuitableforusewithfastenerscoveredinSpecificationsA325,A354,A449,andA490.1.2Thewashersaredesignatedbytypedenotingthematerialandbystyledenotingtheshape.1.2.1Thetypesofwasherscoveredare:1.2.1.1Type18212;Carbonsteel.1.2.1.2Type38212;Weatheringsteel.AtmosphericcorrosionresistanceandweatheringcharacteristicsarecomparabletothatofsteelscoveredinSpecificationsA588/A588MandA709/A709M.Theatmosphericcorrosionresistanceofthesesteelsissubstantiallybetterthanthatofcarbonsteelwithorwithoutcopperaddition.See5.1.Whenproperlyexposedtotheatmosphere,thesesteelscanbeusedbare(uncoated)formanyapplications.1.2.2Thestylesofwasherscoveredare:1.2.2.1Circular8212;Circularwashersinnominalboltsizesx00BC;through4in.suitableforapplicationswheresufficientspaceexistsandangularitypermits.1.2.2.2Beveled8212;Beveledwashersaresquareorrectangular,innominalsizesx00BD;through1x00BD;in.,withabeveled1to6ratiosurfaceforusewithAmericanstandardbeamsandchannels.1.2.2.3Clipped8212;Clippedwashersarecircularorbeveledforusewherespacelimitationsnecessitatethatonesidebeclipped.Note18212;AcompletemetriccompaniontoSpecificationF436hasbeendevelopedx2014;SpecificationF436M;thereforenometricequivalentsarepresentedinthisspecification.1.2.2.4ExtraThick8212;Extrathickwashersarecircularwashersinnominalsizesx00BD;through1x00BD;in.,withanominalthicknessof5/16in.suitableforstructuralapplicationswithoversizedholes.1.3TermsusedinthisspecificationaredefinedinTerminologyF1789unlessotherwisedefinedherein.
【中国标准分类号】:J13
【国际标准分类号】:21_060_20
【页数】:6P.;A4
【正文语种】:


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基本信息
标准名称:银氧化镉电触头材料化学分析方法
中标分类: 电工 >> 电工材料和通用零件 >> 电工合金零件
替代情况:替代JB 4107.3-1985;被JB/T 7776.1-2008代替
发布部门:中华人民共和国机械工业部
发布日期:1995-10-09
实施日期:1996-01-01
首发日期:1900-01-01
作废日期:2008-09-01
提出单位:机械工业部桂林电器科学研究所
归口单位:机械工业部桂林电器科学研究所
起草单位:国营六一五厂
出版社:机械工业出版社
出版日期:1996-01-01
页数:3 页
适用范围

本标准规定了银氧化镉电触头材料中镉量的测定方法。
本标准适用于银氧化镉电触头材料中镉量的测定方法。测定范围:5.00%~25.00%。

前言

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引用标准

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所属分类: 电工 电工材料和通用零件 电工合金零件
【英文标准名称】:StandardSpecificationforPolycarbonateResinforMedicalApplications
【原文标准名称】:医用聚碳酸酯树酯的标准规范
【标准号】:ASTMF997-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:F04.11
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:plastics(thermoplastic);plasticsurgicaldevices/applications;polycarbonate(PC)plastics;polymers-surgicalapplications;resins-polycarbonate;seals;Plasticsurgicaldevices/applications--specifications;Polycarbonate(PC)--specifications;Polyme
【摘要】:1.1Thisspecificationcoverspolycarbonateresinandprovidesrequirementsandassociatedtestmethodsforthisthermoplasticwhenitistobeusedinthemanufactureofmedicaldevicesorcomponentsofmedicaldevices.1.2Aswithanymaterial,somecharacteristicsmaybealteredbytheprocessingtechniques(suchasmolding,extrusion,machining,assembly,sterilization,andsoforth)requiredfortheproductionofaspecificpartordevice.Therefore,propertiesoffabricatedformsofthisresinshouldbeevaluatedusingthosetestmethodsthatareappropriatetoassuresafetyandefficacy.1.3Thepropertiesincludedinthisspecificationarethoseapplicableforpolycarbonateonly.Thebiocompatibilityofplasticcompoundsmadeupofpolycarbonateresincontainingcolorants,fillers,processingaids,orotheradditives,aswellaspolymerblendswhichcontainpolycarbonate,shouldnotbeassumed.Thebiocompatibilityofthesemodifiedpolycarbonatesmustbeestablishedbytestingthefinal(end-use)compositionsusingtheappropriatemethodsofevaluation.Inaddition,thebiocompatibilityofthematerialdependstoalargedegreeonthenatureoftheend-useapplication.Itis,therefore,necessarytospecifyasetofbiocompatibilitytestmethodsforeachnewanddistinctapplication.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G45
【国际标准分类号】:11_100_99
【页数】:3P.;A4
【正文语种】:英语