Designation:D4714–96(Reapproved2007)AnAmericanNationalStandardStandardTestMethodforDeterminationofEffectofMoistHeat(50%RelativeHumidityand90°C)onPropertiesofPaperandBoard1ThisstandardisissuedunderthefixeddesignationD4714;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheprocedureforhumidified(50%relativehumidityand90°C)heattreatmentofpaperorboardandthegeneralprocedurefortestingtheheat-treatedmaterials.Thepurposeistoobtain,byanacceleratedtest,inferencesabouttheagingqualitiesofthepaper.1.2Thistestmethodisbasedonworkperformedonprintingandwritingpapersbutmaybeusedwithdiscretionforothertypesofpapersandboards.Thisprocedureisnotintendedforusewithelectricalinsulatingpapers,whosetestingisdescribedinTestMethodsD202.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D202TestMethodsforSamplingandTestingUntreatedPaperUsedforElectricalInsulationD585PracticeforSamplingandAcceptingaSingleLotofPaper,Paperboard,Fiberboard,andRelatedProductD685PracticeforConditioningPaperandPaperProductsforTestingD774/D774MTestMethodforBurstingStrengthofPaper3D776TestMethodforDeterminationofEffectofDryHeatonPropertiesofPaperandBoard3D919TestMethodforCopperNumberofPaperandPaper-board3D2176TestMethodforFoldingEnduranceofPaperbytheM.I.T.Tester2.2TAPPIMethods:4T212OnePercentSodiumHydroxideSolubilityofWoodandPulpT231ZeroSpanBreakingLengthofPulpT403BurstingStrengthofPaperT414InternalTearingResistanceofPaper(Elmendorf-typeMethod)T425BrightnessofPulp,Paper,andPaperboard(Direc-tionalReflectanceat457nm)T456WetTensileBreakingStrengthofPaperandPa...
