Designation:D2126−20StandardTestMethodforResponseofRigidCellularPlasticstoThermalandHumidAging1ThisstandardisissuedunderthefixeddesignationD2126;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversproceduresforthethermalandhumidexposureofrigidcellularplastics.Conditionsusedshallbeagreeduponbetweenthepurchaserandthesupplier.NOTE1—AlistofcommonlyusedexposureconditionsisfoundinTable1.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.NOTE2—ThistestmethodisequivalenttoISO2796inthesamplingandcalculationsections.ItisnotequivalenttoISO2796intheproceduresection.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD1037TestMethodsforEvaluatingPropertiesofWood-BaseFiberandParticlePanelMaterialsE456TerminologyRelatingtoQualityandStatistics2.2ISOStandard:ISO2796CellularPlasticsRigid-TestforDimensionalSta-bility33.Terminology3.1TermsusedinthisstandardaredefinedinaccordancewithTerminologyD883,unlessotherwisespecified.Fortermsrelatingtoprecisionandbiasandassociatedissues,thetermsusedinthisstandardaredefinedinaccordancewithTerminol-ogyE456.4.SignificanceandUse4.1Becauseofthew...
