Designation:C1631–08StandardSpecificationforCellularPolypropyleneThermalInsulation1ThisstandardisissuedunderthefixeddesignationC1631;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthetypes,physicalproperties,anddimensionsofcellularpolypropyleneintendedforuseasthermalinsulationfortemperaturesfrom-150to+240°F(-101to+116°C).1.2Theuseofthermalinsulationmaterialscoveredbythisspecificationisregulatedbycodesthat,whenadoptedbyanauthorityhavingjurisdiction,addressfirepropertiesforspe-cificapplications.NOTE1—Bothfirepropertiesandspecificfire-test-responsecharacter-isticsmaybeaddressedbyspecifications,wherecodesorgovernmentregulationsdonotapply.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathemati-calconversionstoSIunitsthatprovidedforinformationonlyandarenotconsideredstandard.1.4Thephysicalpropertiesaddressedbythisspecificationareimpactedbyenduseconditions.Fordesignpurposes,obtainphysicalpropertiesfromthemanufacturer.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C165TestMethodforMeasuringCompressivePropertiesofThermalInsulationsC168TerminologyRelatingtoThermalInsulationC177TestMethodforSteady-StateHeatFluxMeasure-mentsandThermalTransmissionPropertiesbyMeansoftheGuarded-Hot-PlateApparatusC272TestMethodforWaterAbsorptionofCoreMaterialsforStructuralSandwichConstructionsC303TestMethodforDimensionsandDensityofPre-formedBlockandBoard−TypeThermalInsulationC390PracticeforSamplingandAcceptanceofThermalInsulationLotsC518TestMethodforSteady-StateThermalTransmiss...
