Designation:D4507–93aAnAmericanNationalStandardStandardSpecificationforThermoplasticPolyester(TPES)Materials1ThisstandardisissuedunderthefixeddesignationD4507;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthermoplasticpolyestermate-rialssuitableformoldingorextrusion.1.2Thisspecificationisintendedtobeameansofcallingoutplasticmaterialsusedinthefabricationofenduseitemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectionshouldbemadebythosehavingexpertiseintheplasticsfieldaftercarefulconsiderationofthedesignandperformancerequiredofthepart,theenvironmenttowhichitwillbeexposed,thefabricationprocesstobeemployed,theinherentpropertiesofthematerialotherthanthosecoveredbythisspecification,andtheeconomics.1.3Thepropertiesincludedinthisspecificationarethoserequiredtoidentifythecompositionscovered.Theremaybeotherrequirementsnecessarytoidentifyparticularcharacter-isticsimportanttospecializedapplications.Thesewillbeagreeduponbetweentheuserandthesupplier,byusingthesuffixesasgiveninSection5.1.4ThevaluesstatedinSIunits,asdetailedinPracticeE380,aretoberegardedasthestandard.1.5Thisstandardshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.NOTE1—ThisspecificationissimilartoISO7792/1-1985(E),althoughthetechnicalcontentissignificantlydifferent.2.ReferencedDocuments2.1ASTMStandards:D256TestMethodsforImpactResistanceofPlasticsandElectricalInsulatingMaterials2D618Practi...
