Designation:C741–93(Reapproved1998)StandardTestMethodforAcceleratedAgingofWoodSashFaceGlazingCompound1ThisstandardisissuedunderthefixeddesignationC741;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthetestingofwoodsashfaceglazingcompoundsforacceleratedaging.NOTE1—TestMethodD2249describesasimilarprocedureforadifferenttypeofglazingcompound.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityofwhoeverusesthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:C717TerminologyofBuildingSealsandSealants2D822PracticeforConductingTestsonPaintandRelatedCoatingsandMaterialsUsingFilteredOpen-FlameCarbon-ArcExposureApparatus3D2249TestMethodforPredictingtheEffectofWeatheringonFaceGlazingandBeddingCompoundsonMetalSash22.2FederalSpecifications:TT-P-96APaint,Latex-base,ForExteriorWoodandMetalSurfaces(WhiteandTints)42.3NWMAIndustryStandards:NWMAI.S.4-81WaterRepellantPreservativeTreatmentforMillwork5NWMAM-2-81SwellometerTest53.Terminology3.1Definitions—RefertoTerminologyC717fordefinitionsofthefollowingterms:adhesivefailure(lossofadhesion),bead,compound,faceglazing,glazing,muntin,rabbet,andsightline.4.SummaryofTestMethod4.1Asectionofwoodmuntinbarandglass,simulatingatypicalwoodsash,isglazedwiththecompoundandexposedintheacceleratedweatheringunitfor200h,thenvisuallyinspectedfordegradationorfailure.5.SignificanceandUse5.1Theeffectofacceleratedweatheringwillassistinjudgingthequalityandpredictingtheperformanceofglazingcompounds.Acceleratedweatheringdevicesshouldnot,how-eve...
