资源描述：
《astm aampam－ 奥氏体合金钢铸件中铁素体含量的估算》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Designation:A800/A800M–01StandardPracticeforSteelCasting,AusteniticAlloy,EstimatingFerriteContent1ThereofThisstandardisissuedunderthe®xeddesignationA800/A800M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumber
2、inparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.ScopeandNickel-Chromium-IronAlloys51.1Thispracticecoversproceduresandde®nitionsforE353TestMethodsforChemicalAnalysisofStainless,estimatingferritecontentincerta
3、ingradesofausteniticiron-Heat-Resisting,Maraging,andOtherSimilarChromium-Nickel-IronAlloys6chromium-nickelalloycastingsthathavecompositionsbal-ancedtocreatetheformationofferriteasasecondphaseinE562PracticeforDeterminingVolumeFractionbySys-tematicManualPointCount7amountscontrolledtobewith
4、inspeci®edlimits.Methodsaredescribedforestimatingferritecontentbychemical,magnetic,2.2ConstitutionDiagrams:andmetallographicmeans.SchoeferDiagramforEstimatingFerriteContentofStain-lessSteelCastings(1980revision)81.2Thegradescoveredbythispracticeare:CF-3,CF-3A,CF-8,CF-8A,CF-3M,CF-3MA,CF-8
5、M,CF-8C,CG-8M,andSchaefflerDiagramforEstimatingFerriteContentofStain-lessSteelWeldMetal9CH-10.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsDeLongDiagramforEstimatingFerriteContentofStainlessSteelWeldMetal10aretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbracket
6、s.Thevaluesstatedineach2.3AmericanWeldingSocietySpeci®cation:systemarenotexactequivalents;therefore,eachsystemmustAWSA4.2,ProceduresforCalibratingMagneticInstru-beusedindependentlyoftheother.CombiningvaluesfromthementstoMeasuretheDeltaFerriteContentofAusteniticStainlessSteelWeldMetal11tw
7、osystemsmayresultinnonconformancewiththepractice.1.4Thisstandarddoesnotpurporttoaddressthesafety3.Terminologyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyand3.1De®nitions:healthpracticesanddeterminetheapplicab
