Designation:D4703−16StandardPracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheets1ThisstandardisissuedunderthefixeddesignationD4703;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticecoversthecompressionmoldingofther-moplasticgranulesandmilledstockforthepreparationoftestspecimens.21.2Whileconditionsforcertainmaterialsaregiven,theprimarysourceofspecificconditionsshallbethematerialspecificationstandardsforeachtypeofmaterial.1.3Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE1—ThemainbodyofthispracticeisequivalenttoISO293-1986.AnnexA1andISO293-1986differinsomedetails;however,specimenspreparedusingAnnexA1,ProcedureAshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodD.SpecimenspreparedusingAnnexA1,ProcedureCshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodB.However,duetothegreatercoolingratetolerancesoftheISOstandard,specimenspreparedinaccordancewithISOCoolingMethodBmaynotbeequivalenttoAnnexA1,ProcedureC.2.ReferencedDocuments2.1ASTMStandards:3D618PracticeforConditioningPlasticsforTestingD1248SpecificationforPolyethylenePlasticsExtrusionMaterialsforWireandCableD3350SpecificationforPolyethylenePlasticsPipeandFit-tingsMaterialsD4976SpecificationforPolyethylenePlasticsMoldingandExtrusionMaterials2.2ISOStandard:ISO293Plastics—CompressionMouldingTestSpecimensofThermoplasticMaterials43.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1averagecoolingrate(°C/min),n—thecoolingratec...
