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SAE AMS3207 Chloroprene (CR) Rubber Weather Resistant 25-35

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Product Code:SAE AMS3207
Title:Chloroprene (CR) Rubber Weather Resistant 25-35
Issuing Committee:Ams Ce Elastomers Committee
Scope: This specification covers a chloroprene (CR) rubber in the form of sheet, strip, tubing, and molded shapes. These products have been used typically for parts requiring resistance to weather, such as window channels, bumper pads, chafing strips, and seals, for use from -40 to +100 degrees C (-40 to +212 degrees F), but usage is not limited to such applications.
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【英文标准名称】:StandardTestMethodforMeasurementofCorrosionSitesinNickelPlusChromiumorCopperPlusNickelPlusChromiumElectroplatedSurfaceswithDouble-BeamInterferenceMicroscope
【原文标准名称】:双束干涉显微镜测量镍+铬或铜+镍+铬电镀表面腐蚀部位的标准试验方法
【标准号】:ASTMB651-1983(2010)
【标准状态】:现行
【国别】:
【发布日期】:1983
【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】:B08.08.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:copper-nickel-chromium-electrodepositedcoatings;corrosion-electrodepositedcoatings;double-beaminterferencemicroscopy;electroplatedcoatings;electroplatedcoatings-chromium;electroplatedcoatings-nickel;microscopicexamination-metallic/inor
【摘要】:Differentelectroplatingsystemscanbecorrodedunderthesameconditionsforthesamelengthoftime.Differencesintheaveragevaluesoftheradiusorhalf-widthorofpenetrationintoanunderlyingmetallayeraresignificantmeasuresoftherelativecorrosionresistanceofthesystems.Thus,ifthepitradiiaresubstantiallyhigheronsampleswithagivenelectroplatingsystem,whencomparedtoothersystems,atendencyforearlierfailureoftheformerbyformationofvisiblepitsisindicated.Ifpenetrationintothesemi-brightnickellayerissubstantiallyhigher,atendencyforearlierfailurebycorrosionofbasismetalisevident.1.1Thistestmethodprovidesameansformeasuringtheaveragedimensionsandnumberofcorrosionsitesinanelectroplateddecorativenickelpluschromiumorcopperplusnickelpluschromiumcoatingonsteelafterthecoatinghasbeensubjectedtocorrosiontests.Thistestmethodisusefulforcomparingtherelativecorrosionresistancesofdifferentelectroplatingsystemsandforcomparingtherelativecorrosivitiesofdifferentcorrosiveenvironments.Thenumbersandsizesofcorrosionsitesarerelatedtodeteriorationofappearance.Penetrationoftheelectroplatedcoatingsleadstoappearanceofbasismetalcorrosionproducts.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:77_060
【页数】:3P.;A4
【正文语种】:


基本信息
标准名称:金属热处理生产过程安全卫生要求
英文名称:Requirements for the safety and health in production process of metal heat treatment
中标分类: 机械 >> 加工工艺 >> 热处理
ICS分类: 机械制造 >> 热处理
替代情况:JB 4406-1987;被GB 15735-2004代替
发布日期:1995-09-26
实施日期:1997-01-01
首发日期:1995-09-26
作废日期:2004-11-01
归口单位:全国热处理标准化技术委员会
起草单位:机械工业部北京机电研究所
出版日期:1900-01-01
页数:0
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所属分类: 机械 加工工艺 热处理 机械制造 热处理