Designation:D4206−96(Reapproved2018)StandardTestMethodforSustainedBurningofLiquidMixturesUsingtheSmallScaleOpen-CupApparatus1ThisstandardisissuedunderthefixeddesignationD4206;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodmaybeusedinconjunctionwithaflashpointdetermination.Iftheflashpointofamixtureofflammableandnonflammableliquidsorliquidsofwidelydifferentflashpointsisbelowtheupperlimitofaflammabilityclassification(forexample,100°FspecifiedbytheU.S.DepartmentofTransportation),thistestmaybeconductedtodeterminethesustainedburningcharacteristicsofthemixture.ThistestmethodisamodificationofthetestforcombustibilitynowincorporatedasSchedule2ofthe“HighlyFlammableLiquidsandLiquefiedPetroleumGasesRegulation,1972”oftheUnitedKingdomunderTheFactoriesAct,1961,whichisalsoissuedasBritishStandardBS-3900,PartA-11,SmallScaleTestforCombustibility.ThissustainedburningtestwasstudiedandproposedbytheASTMCoordinatingCommitteeforFlashPointandRelatedProperties.ThemajorpurposeofthistestissimilartothatoftheBritishtest—toprovideamethodfordeterminingthesustainedburningcharacteristicsbydirectlyobservingthispropertyratherthanbydeducingthemfromtheflashpoint.1.Scope1.1Thistestmethod2describesaprocedurefordeterminingthesustainedburningcharacteristicsofmixturesofflammableandnonflammableliquidsandtomixturescontainingliquidswithwidelydifferentflashpoints.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandardshouldbeusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditionsandshouldnotbeusedtodescribeorappraisethefire-hazardorfire-riskofmaterials,products,orassembliesunderactu...
