Designation:C372−94(Reapproved2016)StandardTestMethodforLinearThermalExpansionofPorcelainEnamelandGlazeFritsandFiredCeramicWhitewareProductsbytheDilatometerMethod1ThisstandardisissuedunderthefixeddesignationC372;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthelinearthermalexpansionofpremeltedfrit(porcelainenamelandglaze)andceramicwhitewareproductsbythethermaldilatom-etermethod.Thistestmethodisapplicabletoapparatusmeetingthereproducibilityandaccuracyrequirementsofthistestmethod,whicharetoproducepercentlinearexpansionaccuracyof63%orbetterandcoefficientoflinearexpansionaccuracyof65%orbetter.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E220TestMethodforCalibrationofThermocouplesByComparisonTechniquesE228TestMethodforLinearThermalExpansionofSolidMaterialsWithaPush-RodDilatometerE230SpecificationandTemperature-ElectromotiveForce(EMF)TablesforStandardizedThermocouplesE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions:3.1.1meancoeffıcientoflinearthermalexpansion—fromtemperatureT1totemperatureT2(T1
