Designation:B823−15StandardSpecificationforMaterialsforCopperBasePowderMetallurgy(PM)StructuralParts1ThisstandardisissuedunderthefixeddesignationB823;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversavarietyofcopperbasepowdermetallurgy(PM)structuralmaterials,includingthoseusedinapplicationswherehighelectricalconductivityisrequired.Itincludesaclassificationsystem,ormaterialdesig-nationcode.Withtheclassificationsystem,thisspecificationincludeschemicalcompositionandminimumtensileyieldstrength.NOTE1—Paragraphs6.1and8.1governmaterialclassificationbythedesignationcode.TheclassificationsystemisexplainedintheAppendix.NOTE2—MaterialsclassifiedasC-0000areexpectedtobeusedinapplicationswherehighelectricalconductivityisrequired.1.2Withtheexceptionofdensityvalues,forwhichthecubiccentimetre(g/cm3)unitistheindustrystandard,thevaluesstatedininch-poundunitsaretoberegardedasthestandard.ValuesinSIunitsresultfromconversion.Theymaybeapproximateandareforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2B243TerminologyofPowderMetallurgyB925PracticesforProductionandPreparationofPowderMetallurgy(PM)TestSpecimensB962TestMethodsforDensityofCompactedorSinteredPowderMetallurgy(PM)ProductsUsingArchimedes’PrincipleB963TestMethodsforOilContent,Oil-ImpregnationEfficiency,andSurface-ConnectedPorosityofSinteredPowderMetallurgy(PM)ProductsUsingArchimedes’PrincipleE8TestMethodsforTensionTestingofMetallicMaterialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecifications2.2MPIFStandard:MPIFStandard35,MaterialsStandardsforPMStructuralParts33.Terminology3.1Definitions—DefinitionsofpowdermetallurgytermscanbefoundinTerminologyB243.AdditionaldescriptiveinformationisavailableintheRelatedMaterialssectionofVol02.05oftheAnnualBookofAS...
