Designation:C1427−16StandardSpecificationforExtrudedPreformedFlexibleCellularPolyolefinThermalInsulationinSheetandTubularForm1ThisstandardisissuedunderthefixeddesignationC1427;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversextrudedpreformedflexiblecellularpolyolefinthermalinsulationoperatingtemperaturesfrom–150°Fto200°F(–101°Cto93°C).Forspecificapplications,theactualtemperaturelimitshallbeagreeduponbetweenthemanufacturerandthepurchaser.1.2Theuseofthermalinsulationmaterialscoveredbythisspecificationaregovernedbycodesandstandardsthataddressfireperformance.Contactmanufacturerforspecificperfor-manceofproductattheintendedusethickness.1.3Thisspecificationcoversthephysicalpropertiesofpreformedflexiblecellularpolyolefinthermalinsulation,whichhavebeendeemedmandatoryforthermaldesign.Physicalpropertiessuchasdensityandcoefficientofthermalexpansion(CTE)havebeendeemednonmandatoryforthermaldesign.NonmandatoryphysicalpropertieshavebeenincludedinAppendixX1forinformationpurposesonly.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C168TerminologyRelatingtoThermalInsulationC177TestMethodforSteady-StateHeatFluxMeasure-mentsandThermalTransmissionPropertiesbyMeansoftheGuarded-Hot-PlateApparatusC335TestMethodforSteady-StateHeatTransferPropertiesofPipeInsulationC390PracticeforSamplingandAcceptanceofThermalInsulationLotsC411TestMethod...
