Designation:D3294−22StandardSpecificationforPolytetrafluoroethylene(PTFE)ResinMoldedSheetandMoldedBasicShapes1ThisstandardisissuedunderthefixeddesignationD3294;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationestablishesrequirementsandmethodsoftestforthematerial,dimensions,andworkmanship,andthephysicalandelectricalpropertiesofmoldedsheetinminimumthicknessesof0.794mm(1⁄32in.)manufacturedfromPTFEresinmoldingmaterialsdefinedinSpecificationD4894.1.2Thisspecificationalsoestablishesrequirementsformoldedbasicshapesmadefrommoldingmaterials.Thisspecificationisforproducts300mm(12in.)orlessinadimensionparalleltoand12.7mm(0.5in.)orgreaterinthedimensionperpendiculartothedirectionoftheappliedmold-ingpressure.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion,Section7,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specialattentioniscalledto13.2,13.3,13.6,13.8,andA1.NOTE1—ThereisnoknownISOequivalenttothisstandard.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequenciesD374/D374MTestMethodsforThicknessofSolidElectri-calInsulationD618PracticeforConditioningPlastics...
