Designation:A751−14aStandardTestMethods,Practices,andTerminologyforChemicalAnalysisofSteelProducts1ThisstandardisissuedunderthefixeddesignationA751;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.INTRODUCTIONThesetestmethods,practices,andterminologywerepreparedtoanswertheneedforasingledocumentthatwouldincludeallaspectsofobtainingandreportingthechemicalanalysisofsteel,stainlesssteel,andrelatedalloys.Suchsubjectsasdefinitionsoftermsandproduct(check)analysisvariations(tolerances)requiredclarification.Requirementsforsampling,meetingspecifiedlimits,andtreatmentofdatausuallywerenotclearlyestablishedinproductspecifications.Itisintendedthatthesetestmethods,practices,andterminologywillcontainallrequirementsforthedeterminationofchemicalcompositionofsteel,stainlesssteel,orrelatedalloyssothatproductspecificationswillneedcontainonlyspecialmodificationsandexceptions.1.Scope*1.1Thesetestmethods,practices,andterminologycoverdefinitions,referencemethods,practices,andguidesrelatingtothechemicalanalysisofsteel,stainlesssteel,andrelatedalloys.Itincludesbothwetchemicalandinstrumentaltech-niques.1.2Directionsareprovidedforhandlingchemicalrequirements,productanalyses,residualelements,andrefer-encestandards,andforthetreatmentandreportingofchemicalanalysisdata.1.3Thesetestmethods,practices,andterminologyapplyonlytothoseproductstandardswhichincludethesetestmethods,practices,andterminology,orpartsthereof,asarequirement.1.4Incasesofconflict,theproductspecificationrequire-mentsshalltakeprecedenceovertherequirementsofthesetestmethods,practices,andterminology.1.5AttentionisdirectedtoISO/IEC17025whentheremaybeaneedforinformationoncriteriaforevaluationoftestinglaboratories.1.6Thisstandarddoesnotpurporttoaddressallofthe...
