ASTM G69-1997(2009) 铝合金潜在腐蚀性的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasurementofCorrosionPotentialsofAluminumAlloys
【原文标准名称】:铝合金潜在腐蚀性的标准试验方法
【标准号】:ASTMG69-1997(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:G01.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aluminumalloy;aqueous;copper;corrosionpotential;sodiumchloride;solidsolution;zinc;Aluminumalloys--corrosiontesting;Corrosion--Al/Alalloys;Corrosion--metals/alloys
【摘要】:Thecorrosionpotentialofanaluminumalloydependsupontheamountsofcertainalloyingelementsthatthealloycontainsinsolidsolution.Copperandzinc,whicharetwoofthemajoralloyingelementsforaluminum,havethegreatesteffectwithcoppershiftingthepotentialinthenobleorpositivedirection,andzincintheactiveornegativedirection.Forexample,commerciallyunalloyedaluminum(1100alloy)hasapotentialofx2212;750mVwhenmeasuredinaccordancewiththispractice,2024x2013;T3alloywithnearlyallofitsnominal4.3%copperinsolidsolution,apotentialofx2212;600tox2212;620mV(Note2),and7072alloywithnearlyallofitsnominal1.0%zincinsolidsolution,apotentialofx2212;885mV(SCE)(1-3).Note28212;Thepotentialdependsupontherateofquenching.Becauseitreflectstheamountofcertainalloyingelementsinsolidsolution,thecorrosionpotentialisausefultoolforcharacterizingthemetallurgicalconditionofaluminumalloys,especiallythoseofthe2XXXand7XXXtypes,whichcontaincopperandzincasmajoralloyingelements.Itsusesincludethedeterminationoftheeffectivenessofsolutionheattreatmentandannealing(1),oftheextentofprecipitationduringartificialaging(4)andwelding(5),andoftheextentofdiffusionofalloyingelementsfromthecoreintothecladdingofalcladproducts(2).1.1Thistestmethodcoversaprocedureformeasurementofthecorrosionpotential(seeNote1)ofanaluminumalloyinanaqueoussolutionofsodiumchloridewithenoughhydrogenperoxideaddedtoprovideanamplesupplyofcathodicreactant.Note18212;Thecorrosionpotentialissometimesreferredtoastheopen-circuitsolutionorrestpotential.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H25
【国际标准分类号】:77_120_10
【页数】:4P.;A4
【正文语种】:英语

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上一篇: ASTM G30-1997(2009) 制作和使用U形弯曲应力腐蚀的标准作法
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【英文标准名称】:StandardTestMethodforVaporPressureofPetroleumProducts(MiniMethodx2014;Atmospheric)
【原文标准名称】:石油产品蒸气压力的标准试验方法(大气的小型法)
【标准号】:ASTMD5482-2007
【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】:D02.08.0D
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:大气的;汽油;烃类;石油;石油产品;试验
【英文主题词】:dryvaporpressureequivalent;gasoline;hydrocarbon-oxygenateblends;minimethod-atmospheric;petroleumproducts;vaporpressure;Dryvaporpressure;Gasoline;Hydrocarbon-oxygenateblends;Instrumentalmeasurement--petroleumproducts;Minimethod;
【摘要】:Vaporpressureisanimportantphysicalpropertyofvolatileliquids.Vaporpressureiscriticallyimportantforbothautomotiveandaviationgasolines,affectingstarting,warm-up,andtendencytovaporlockwithhighoperatingtemperaturesorhighaltitudes.Maximumvaporpressurelimitsforgasolinearelegallymandatedinsomeareasasameasureofairpollutioncontrol.1.1Thistestmethodcoversaprocedureforthedeterminationoftotalvaporpressureofpetroleumproductsusingautomaticvaporpressureinstruments.Thetestmethodissuitablefortestingsampleswithboilingpointsabove0x00B0;C(32x00B0;F)thatexertavaporpressurebetween7and110kPa(1.0and16psi)at37.8x00B0;C(100x00B0;F)atavapor-to-liquidratioof4:1.Thetestmethodisapplicabletogasolinescontainingoxygenates.Noaccountismadeofdissolvedwaterinthesample.Note18212;Becausetheexternalatmosphericpressuredoesnotinfluencetheresultantvaporpressure,thisvaporpressureisanabsolutepressureat37.8x00B0;C(100x00B0;F)inkPa(psi).Thisvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallvaporizationofthesampleanddissolvedairintotheairoftheconfinedspace.1.1.1Somegasoline-oxygenateblendsmayshowahazewhencooledto0to1x00B0;C.Ifahazeisobservedin8.5,itshallbeindicatedinthereportingofresults.Theprecisionandbiasstatementsforhazysampleshavenotbeendetermined(seeNote6).1.2ThistestmethodisamodificationofTestMethodD5191(MiniMethod)inwhichthetestchamberisatatmosphericpressurepriortosampleinjection.1.3Thistestmethodcoverstheuseofautomatedvaporpressureinstrumentsthatperformmeasurementsonliquidsamplesizesintherangefrom1to10mL.1.4Thistestmethodissuitableforthedeterminationofthedryvaporpressureequivalent(DVPE)ofgasolineandgasoline-oxygenateblendsbymeansofacorrelationequation(see13.2).ThecalculatedDVPEisconsideredequivalenttotheresultobtainedonthesamematerialwhentestedbyTestMethodD4953.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Forspecificwarningstatements,see7.2through7.7.)
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:5P.;A4
【正文语种】:

Product Code:SAE AMS5653
Title:Steel, Corrosion and Heat-Resistant, Bars, Wire, Forgings, Tubing and Rings, 17Cr - 12Ni - 2.5Mo (0.030 Max C) (316L), Solution Heat Treated
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash welded rings, and stock for forging or flash welded rings.