Designation:B985−12(Reapproved2016)StandardPracticeforSamplingAluminumIngots,Billets,CastingsandFinishedorSemi-FinishedWroughtAluminumProductsforCompositionalAnalysis1ThisstandardisissuedunderthefixeddesignationB985;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribesproceduresforsamplingun-wroughtaluminumingots,billets,castingsandfinishedorsemi-finishedwroughtaluminumproductstoobtainarepre-sentativesamplefordeterminingchemicalcomposition.1.1.1Chemicalcompositionsdeterminedfromsamplesob-tainedinaccordancewiththisstandardpracticemaydifferfromthebulkchemicalcompositiondeterminedfromsamplestakenwheningotsorcastingsarepoured.Thesedifferencescanbeduetoelementalsegregationthatoccursduringsolidification,proceduresthatremoveenrichedmaterial(forexample,ingotscalping),orproceduresthatremovedepletedareas(forexample,removaloftheriserfromacasting).1.1.2Analysisofsamplesobtainedfromunwroughtalumi-numingots,billets,andcastingsandfinishedorsemi-finishedwroughtaluminumproductscanbeusedtodetermineifthepiecesampledmeetsTheAluminumAssociation,Inc.regis-teredchemicalcompositionlimitsorotherspecifiedchemicalcompositionlimitsforthealloy.AnalysisofsuchsamplesshallnotsupersedetheanalysisofsamplestakenduringpouringofcastingsoringotsinaccordancewithPracticesE716andanalyzedinaccordancewithTestMethodsE34,E607,E1251,orEN14242andshallnotbeusedfordeterminingcompliancewithchemicalcompositionrequirementsforanentirecastlotorpartthereof.NOTE1—Piecesmayincludeingots,forgings,coils,sheets,extrusions,castings,andsoforth.Asingleunwroughtingotorbilletmayproducemultiplefinishedorsemi-finishedpieces.NOTE2—CertificationofentirecastlotsshouldbedeterminedusingsamplestakenduringpouringofcastingsoringotsinaccordancewithPracticesE716andanalyzedinaccordancewithTestMethodsE34,E6...
