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SAE AS7474 Bolts and Screws, Steel, Corrosion Resistant, UNS S17400 Tensile Strength 140 Ksi Procurement Specification

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Product Code:SAE AS7474
Title:Bolts and Screws, Steel, Corrosion Resistant, UNS S17400 Tensile Strength 140 Ksi Procurement Specification
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: This specification covers bolts and screws made from a corrosion and heat resistant, martensitic iron base alloy of the type identified under the Unified Numbering System as UNS S17400. The following specification designations and their properties are covered: AS7474 140 ksi minimum ultimate tensile strength at room temperature 100 ksi stress corrosion test 72 ksi to 7.2 ksi tension-tension fatigue; AS7474-1 140 ksi minimum ultimate tensile strength at room temperature 100 ksi stress corrosion test 88 ksi minimum ultimate shear strength at room temperature. Primarily for aerospace propulsion system applications where corrosion resistance and high strength in tension is required in temperatures not to exceed 600° F.
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【英文标准名称】:StandardTestMethodforGraphiteFurnaceAtomicAbsorptionSpectrometricDeterminationofLeadandCadmiumExtractedfromCeramicFoodware
【原文标准名称】:用石墨原子反应堆吸收光谱法测定陶瓷食品器皿中铅和镉的标准试验方法
【标准号】:ASTMC1466-2000(2007)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:C21.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cadmiumrelease;cermicware;foodware;graphitefurnaceatomicabsorptionspectrometry;leadrelease
【摘要】:Toxiceffectsofleadandcadmiumarewellknownandreleaseoftheseelementsfromfoodwareisregulatedbymanycountries.Regulatorydecisionsarebasedonresultsof24-hleachingwithaceticacidbecauseresultsofthistestmethodarepreciseandaccurateandthistestmethodiseasytouse.Concentrationsofleadandcadmiumextractedbyfoodmaybedifferentfromresultsofthismethod,however,becauseacidity,contacttime,andtemperaturetypicalofconsumerusearedifferentfromthoseofthistestmethod.Thistestmethodisintendedforapplicationonlyincontamination-freesettingsandshouldbeperformedbywell-qualifiedtechnicalpersonnel.Itisrecognizedthatitisnotapracticalorappropriatemethodtouseinanonlaboratoryenvironmentforqualityassuranceandcontroloftheceramicprocess.UsersareadvisedtouseTestMethodC738(flameAAS)forpurposesofthelatter.1.1Thistestmethodcoversproceduresforusinggraphitefurnaceatomicabsorptionspectroscopy(GFAAS)toquantitativelydetermineleadandcadmiumextractedbyaceticacidatroomtemperaturefromthefood-contactsurfaceoffoodware.Themethodisapplicabletofood-contactsurfacescomposedofsilicate-basedmaterials(earthenware,glazedceramicware,decoratedceramicware,decoratedglass,andleadcrystalglass)andiscapableofdeterminingleadconcentrationsgreaterthan0.005to0.020g/mLandcadmiumconcentrationsgreaterthan0.0005to0.002g/mL,dependingoninstrumentdesign.1.2ThistestmethodalsodescribesqualitycontrolprocedurestocheckforcontaminationandmatrixinterferenceduringGFAASanalysesandaspecificsequenceofanalyticalmeasurementsthatdemonstratesproperinstrumentoperationduringthetimeperiodinwhichsamplesolutionsareanalyzed.1.3Cleaningandothercontaminationcontrolproceduresaredescribedinthistestmethod.Usersmaymodifycontaminationcontrolproceduresprovidedthatthemodificationsproduceacceptableresultsandareusedforbothsampleandqualitycontrolanalyses.1.4ThevaluesstatedinSI(metric)unitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C53
【国际标准分类号】:81_060_99;81_060_20
【页数】:8P.;A4
【正文语种】:


基本信息
标准名称:计算机辅助设计 设计文件管理制度 设计文件的格式
中标分类: 电子元器件与信息技术 >> 信息处理技术 >> 信息处理系统设计与文件编制
替代情况:被QJ 1714A-1999代替
发布日期:
实施日期:1992-08-01
首发日期:
作废日期:
出版日期:
页数:8页
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所属分类: 电子元器件与信息技术 信息处理技术 信息处理系统设计与文件编制