Designation:D4986−10StandardTestMethodforHorizontalBurningCharacteristicsofCellularPolymericMaterials1ThisstandardisissuedunderthefixeddesignationD4986;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisfire-test-responsetestmethoddescribesasmall-scalehorizontallyorientedburningtestprocedureforcompar-ingtherelativerateofburningandtheextentandtimeofburningofcellularpolymericmaterialshavingadensitylessthan250kg/m3.1.2TheclassificationsystemdescribedintheAppendixX1isintendedforqualityassuranceandthepreselectionofcomponentmaterialsforproducts.1.3Thisstandardmeasuresanddescribestheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeNote3.1.6Firetestingisinherentlyhazardous.Adequatesafe-guardsforpersonnelandpropertyshallbeemployedinconductingthesetests.NOTE1—ThistestmethodisequivalenttoISO9772.2.ReferencedDocuments2.1ASTMStandards:2D4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustriesD5025SpecificationforLaboratoryBurnerUsedforSmall-ScaleBurningTestsonPlasticMaterialsE176TerminologyofFireStandardsE437SpecificationforIndustrialWireClothandScreens(SquareOpeningSeries)(Discontinued2000)ReplacedbyE2016(Withdrawn2000)32.2ISOStandard:ISO9772CellularPlastics—DeterminationofHorizontalBurningCharacteristicsofSmallSpecim...
