Product Code:SAE AMS5771
Title:Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings and Rings, 74Ni - 7.0Cr - 16.5Mo, Solution Heat Treated
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat-resistant nickel alloy in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings.These products have been used typically for parts, such as turbine air-sealing components, requiring moderate strength up to 1400 掳F (760 掳C) and oxidation resistance up to 1600 掳F (871 掳C), particularly where a low coefficient of expansion is desirable, but usage is not limited to such applications.【英文标准名称】:StandardTestMethodsforLeaksUsingtheMassSpectrometerLeakDetectorintheInside-OutTestingMode
【原文标准名称】:在双面试验模式中用质谱仪检漏器做泄漏检验的标准试验方法
【标准号】:ASTME493-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:检漏仪;泄漏;质谱仪;无损检验;试验
【英文主题词】:belljarleaktest;bombmassspectrometerleaktest;heliumleaktest;heliumleaktesting;leaktesting;massspectrometerleaktesting;sealedobjectmassspectrometerleaktest
【摘要】:MethodsAorBareusefulintestinghermetically-sealeddeviceswithinternalvolumes.Maximumacceptableleakrateshavebeenestablishedformicroelectronicdevicestoassureperformancecharacteristicswillnotbeaffectedbyin-leakageofair,watervapororothercontaminantsovertheprojectedlifeexpected.Caremustbetakentocontrolthebombingpressure,bombingtimeanddwelltimeafterbombingortheresultscanvarysubstantially.1.1Thesetestmethodscoverproceduresfortestingdevicesthataresealedpriortotesting,suchassemiconductors,hermeticallyenclosedrelays,pyrotechnicdevices,etc.,forleakagethroughthewallsoftheenclosure.Theymaybeusedwithvariousdegreesofsensitivity(dependingontheinternalvolume,thestrengthoftheenclosure,thetimeavailableforpreparationoftest,andonthesorptioncharacteristicsoftheenclosurematerialforhelium).Ingeneralpracticethesensitivitylimitsarefrom4.41015to4.41011moles/s(109standardcm3/sto105standardcm3/sat0C)forhelium,althoughtheselimitsmaybeexceededbyseveraldecadesineitherdirectioninsomecircumstances.1.2Twotestmethodsaredescribed:1.2.1TestMethodATestpartpreparationbybombing.1.2.2TestMethodBTestpartpreparationbyprefilling.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N50
【国际标准分类号】:19_100
【页数】:3P.;A4
【正文语种】: