ff-5¿-6.5ASTMDI43377M2575532Öû24370Om....(cib&-aANSIIASTMD1433-77AMERtCANSOCIETYFORTESTINGANDMATERIALS1916RacoSt.,Philadelphla,Pa.,19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMifnotlistedinthecurrentcombinedindex,willappearinthenextedition.StandardTestMethodfor.RATEOFBURNINGAND/OREXTENTANDTIMEOFBURNINGOFFLEXIBLETHININCLINElPLASTICSHEETINGSUPPORTEDONA45-DEGThisStandardisissuedunderthefixeddesignationD1433;thenumberimmediatelyfollowingtLedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.1.ScopeD618.ConditioningPlasticsandElectrical1.1Thismethodcoversthedeterminationoftherelativerateofburningand/orextentand3.Significancetimeofburningofflexibleplasticsintheformoffilmorthinsheeting.Materialsthatshrinkintendedtobeacriterionforfirehazard.Thefirehazardexcessivelyuponignition,orthatmelttocreatedbymaterialsdependsupontheformcausetheflametobecarriedawaywhiledrip-andenduseofthematerial.Assessmentoffireping,cannotbeevaluatedbythismethod.Al-hazardincludes,butisnotlimitedto,manythoughthetestisprimarilyintendedfornon-factors,suchas,easeofignition,burningrate,rigidplasticfilms,itmaybeusedonrigidornonrigidsheetingwhichcanbebentthroughflamespread,fuelcontribution,intensityofthe45-deganglespecifiedinthetestprocedure.burning,andproductsofcombustion.3.2Thismethodisintendedtoprovidedata1.2Caution-Duringthecourseofcom-forcomparingtherelativeburningratesofthinbustion,gasesorvapors,orboth,areevolvedplasticsheetingundertheconditionsofthistest.whichmaybehazardoustopersonnel.Ade-Therateofburningwillvarywiththickness.quateprecautionsshouldbetakentoprotectTestdatashouldbecomparedwithdataforatheoperator.controlmaterialofknownperformanceandofNOTEI-MethodD568,TestforRateofBurn-comparablethickness.Correlationwithburn-ingand/orExtentandTimeofBurningofFlexibleingcharacteristicsunderactualuseconditionsPlasticsinaVerticalPosition*mayalsobeusedtotestflexiblethinsheetsorfdms.Self-supportingisno...
