Designation:C374−14(Reapproved2015)´1StandardTestMethodsforFusionFlowofPorcelainEnamelFrits(Flow-ButtonMethods)1ThisstandardisissuedunderthefixeddesignationC374;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Sections3and8correctededitoriallyinMay2015.INTRODUCTIONThistestprovidesaproceduretocomparethefluidityofaglassfritoraporcelainenamelpowdertoastandardreferencematerialatafixedtemperatureabovethesample’sglasstemperature.1.Scope1.1Thesetestmethodscoverevaluationoftherelativefusionflowcharacteristicsofsamplesofagivenporcelainenamelfritbycomparisonwithanestablishedstandardforthatfrit.1.2Twotestmethodsareincluded,differingonlyincertaindetailsofthesamplesandintheapparatusandprocedureforpreparationoftestspecimens.Bothtestmethodsgiveequallyreproducibleresultsandprovideasatisfactorybasisforcom-parisonoffusionflowofthesamplewiththatoftheestablishedstandard.1.2.1TestMethodAemploysgranularparticlesoffrittowhichabondingagenthasbeenadded.Buttonspecimensareformedunderhighpressureinahydraulicpress.1.2.2TestMethodBemployscrushed,sizedparticlesoffrittowhichabondingagenthasbeenadded.Buttonspecimensareformedinasteelmoldbyhand.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocument2.1ASTMStandards:2E11SpecificationforWovenWireTestSieveClothandTestSievesTESTMETHODA3.Apparatus3.1Mortar,ofhardsteel,resistanttoabrasionbytheporcelainenamelfrit,andconformingtothedimensionsshowninFig.1.N...
