Designation:D4101−17´1StandardClassificationSystemandBasisforSpecificationforPolypropyleneInjectionandExtrusionMaterials1ThisstandardisissuedunderthefixeddesignationD4101;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—EditoriallycorrectedTableX1.1inJune2019.INTRODUCTIONThisclassificationsystemisnotintendedfortheselectionofmaterialsbutonlyasameanstocalloutplasticmaterialstobeusedforthemanufactureofparts.Theselectionandspecificationofthesematerialsistobemadebypersonnelwithexpertiseintheplasticsfieldwhereotherfactorsincludingtheuseenvironment,inherentpropertiesofthematerials,performanceofthepart,partdesign,manufacturingprocess,andeconomicsareconsidered.1.Scope*1.1Thisclassificationsystemcoverspolypropylenemateri-alssuitableforinjectionmoldingandextrusion.Polymersconsistofhomopolymer,copolymers,andelastomercom-poundedwithorwithouttheadditionofimpactmodifiers,forexample,ethylene-propylenerubber,polyisobutylenerubber,andbutylrubber,colorants,stabilizers,lubricants,orreinforce-ments.1.2Thisclassificationsystemallowsfortheuseofthosepolypropylenematerialsthatcanberecycled,reconstituted,andreground,providedthat:(1)therequirementsasstatedinthisclassificationsystemaremet,and(2)thematerialhasnotbeenmodifiedinanywaytoalteritsconformancetofoodcontactregulationsorsimilarrequirements.Theproportionsofrecycled,reconstituted,andregroundmaterialused,aswellasthenatureandtheamountofanycontaminant,cannotbepracticallycoveredinthisclassificationsystem.Itistheresponsibilityofthesupplierandthebuyerofrecycled,reconstituted,andregroundmaterialstoensurecompliance.(SeeGuideD7209.)1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.NOTE1—Thepropertiesinclu...
