Designation:B212−17StandardTestMethodforApparentDensityofFree-FlowingMetalPowdersUsingtheHallFlowmeterFunnel1ThisstandardisissuedunderthefixeddesignationB212;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethoddescribesaprocedurefordeterminingtheapparentdensityoffree-flowingmetalpowders,andmixedpowders;andissuitableforonlythosepowdersthatwillflowunaidedthroughthespecifiedHallFlowmeterfunnel.1.2Withtheexceptionofthevaluesformass,volume,anddensity,forwhichtheuseofthegramandthecubiccentimetreunitsisthelong-standingindustrypractice,thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2B215PracticesforSamplingMetalPowdersB243TerminologyofPowderMetallurgyB873TestMethodforMeasuringVolumeofApparentDen-sityCupUsedinTestMethodsB212,B329,andB417E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthistestmethod,seeTerminologyB243.AdditionaldescriptivePMinformationisavailableintheRelatedMaterialssectionofVol.02.05...
