Designation:C411−11StandardTestMethodforHot-SurfacePerformanceofHigh-TemperatureThermalInsulation1ThisstandardisissuedunderthefixeddesignationC411;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheperfor-manceofcommercialsizesofbothblockandpipeformsofthermalinsulatingmaterialswhenexposedtosimulatedhot-surfaceapplicationconditions.Theterm“hot-surfaceperfor-mance”hasreferencetoasimulateduse-temperaturetestinwhichtheheatedtestingsurfaceisinahorizontalposition.1.2Thistestmethodrefersprimarilytohigh-temperatureinsulationsthatareapplicabletohot-sidetemperaturesinexcessof200°F(93°C).Itisusedformaterialssuchaspreformedinsulations,insulatingcements,blankets,andthelike,byproperlaboratorypreparationofthesamples.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C167TestMethodsforThicknessandDensityofBlanketorBattThermalInsulationsC168TerminologyRelatingtoThermalInsulationC356TestMethodforLinearShrinkageofPreformedHigh-TemperatureThermalInsulationSubjectedtoSoakingHeat3.Terminology3.1Definitions—TerminologyC168shallapplytothetermsusedinthistestmethod.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1sag,n—theextentofthicknesslossofpipeinsulation,atthetoplongitudinalcenter,duetomaterialfatigueordecompositionduetoelevatedtemperature.4.Signif...
