Designation:E1321−13AnAmericanNationalStandardStandardTestMethodforDeterminingMaterialIgnitionandFlameSpreadProperties1ThisstandardisissuedunderthefixeddesignationE1321;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisfiretestresponsestandarddeterminesmaterialpropertiesrelatedtopilotedignitionofaverticallyorientedsampleunderaconstantanduniformheatfluxandtolateralflamespreadonaverticalsurfaceduetoanexternallyappliedradiant-heatflux.1.2Theresultsofthistestmethodprovideaminimumsurfacefluxandtemperaturenecessaryforignition(q˙"o,ig,Tig)andforlateralspread(q˙"o,s,Ts,min),aneffectivematerialthermalinertiavalue(kρc),andaflame-heatingparameter(Φ)pertinenttolateralflamespread.1.3Theresultsofthistestmethodarepotentiallyusefultopredictthetimetoignition,tig,andthevelocity,V,oflateralflamespreadonaverticalsurfaceunderaspecifiedexternalfluxwithoutforcedlateralairflow.UsetheequationsinAppendixX1thatgoverntheignitionandflame-spreadpro-cessesandwhichhavebeenusedtocorrelatethedata.1.4Thistestmethodispotentiallyusefultoobtainresultsofignitionandflamespreadformaterials.Dataarereportedinunitsforconvenientuseincurrentfiregrowthmodels.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,...
