Designation:D2346−21StandardTestMethodforApparentDensityofLeather1ThisstandardisissuedunderthefixeddesignationD2346;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheappar-entdensityofspecimensofleather.Thistestmethoddoesnotapplytowetblueorwetwhite.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1610PracticeforConditioningLeatherandLeatherProd-uctsforTestingD1813TestMethodforMeasuringThicknessofLeatherTestSpecimensD2347TestMethodforMeasuringAreaofLeatherTestSpecimens3.Terminology3.1Definitions:3.1.1apparentdensity—theweightofaunitvolumeofbulkleatherconditionedaccordingtoPracticeD1610.4.SignificanceandUse4.1Thistestmethodisdesignedtodeterminetheapparentdensityofspecimensfromtheirareaandthickness.Bymeasuringapparentdensity,thedegreeofloadingorofcompressionofleathercanbeevaluated.Thetestmethodisunsuitableforverysoftleatherssuchaschamoiswhosethicknesscannotbeaccuratelymeasuredbythetestmethodcited.5.Apparatus5.1RoundDie,2.7in.to3.0in.(68....
