Designation:B328–96(Reapproved2003)e1StandardTestMethodforDensity,OilContent,andInterconnectedPorosityofSinteredMetalStructuralPartsandOil-ImpregnatedBearings1ThisstandardisissuedunderthefixeddesignationB328;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.e1NOTE—Section9waseditoriallyupdatedinJuly2006.1.Scope1.1Thistestmethodcoversdeterminationofthedensity,oilcontent,andinterconnectedporosityofsinteredbearingsandstructuralpartswithorwithoutoilimpregnation.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B243TerminologyofPowderMetallurgyD1217TestMethodforDensityandRelativeDensity(SpecificGravity)ofLiquidsbyBinghamPycnometerD1298TestMethodforDensity,RelativeDensity(SpecificGravity),orAPIGravityofCrudePetroleumandLiquidPetroleumProductsbyHydrometerMethod3.Terminology3.1Definitionsofpowdermetallurgy(P/M)termscanbefoundinTerminologyB243.Additionaldescriptiveinforma-tionisavailableintheRelatedMaterialsectionofVol02.05oftheAnnualBookofASTMStandards.4.SignificanceandUse4.1ThevolumeofanarbitraryP/Mshapecannotbeaccuratelymeasuredbystandardtechniquessuchasbymi-crometersorcalipers.Sincedensityismass/volume,aprecisemethodtomeasurethevolumeisneeded.Fornonporousobjects,thevolumeofwaterdisplacedbytheimmersedobjectisdeterminedbyArchimedesprinciple.ForporousP/Mparts,amethodisrequiredtosealsurfaceconnectedpores.Iftheporesarenotsealedorthepartisnotoilimpregnated,thepartwillabsorbsomeo...
