ASTM B795-2007 粉末锻造(PF)钢材料中合金或非合金铁杂质百分比的测定用标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingthePercentageofAlloyedorUnalloyedIronContaminationPresentinPowderForged(PF)SteelMaterials
【原文标准名称】:粉末锻造(PF)钢材料中合金或非合金铁杂质百分比的测定用标准试验方法
【标准号】:ASTMB795-2007
【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】:B09.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:杂质;低合金钢;金相学;冶金;测试
【英文主题词】:crossproductcontamination;powderforging(PF);powderforged(PF)partsandtestspecimens;powderforged(PF)steels
【摘要】:Crossproductcontaminationoccurswheneveralloysteelpowdersareprocessedinthesameequipmentasironpowders.Unalloyedironparticles,becausetheymaynothardenuponheattreatment,areapotentialsourceofsoftspotsinlow-alloysteelparts.Alloyedironparticles,havinghigherhardenabilitythananironorcarbonsteelmatrix,areapotentialsourceofhardspots.Hardorsoftspotsmaycauseproblemsinserviceormachining.Theresultsofthetestsmaybeusedtoqualifypartsforshipmentinaccordancewithguidelinesagreedbetweenpurchaserandmanufacturerortocheckthesuitabilityofmixesforuseinpowderforging.1.Scope1.1Thistestmethodcoversametallographicprocedurefordeterminingthepercentageofalloyedorunalloyedironcontaminationpresentinpowderforgedlow-alloysteelmaterialsandthepercentageofalloyedironcontaminationinpowderforgedironandcarbonsteelmaterials.1.2PropertyvaluesstatedinSIunitsarethestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H70
【国际标准分类号】:77_160
【页数】:3P.;A4
【正文语种】: