Designation:D1042−22StandardTestMethodforLinearDimensionalChangesofPlasticsCausedbyExposuretoHeatandMoisture1ThisstandardisissuedunderthefixeddesignationD1042;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodisdesignedtoprovideameansformeasuringthedimensionalchangesofplasticspecimenssuchasshrinkageorexpansion,developedunderspecificheatandwaterconditionings.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.NOTE1—ThisstandardandISO2796addressthesamesubjectmatterbutdifferintechnicalcontent.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD5947TestMethodsforPhysicalDimensionsofSolidPlasticsSpecimensE456TerminologyRelatingtoQualityandStatisticsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE2935PracticeforEvaluatingEquivalenceofTwoTestingProcesses2.2ISOStandards:3ISO2796Cellularplastics,rigid—Testfordimensionalsta-bility3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsthatappearinthispracticerelatingtoplastics,refertoTerminologyD883.3.1.2Fordefinitionsoftermsthatappearinthispracticerelatingtoqualityandstatisti...
