ASTM_D_1929_-_14.pdf

Designation:D192914Standard Test Method forDetermining Ignition Temperature of Plastics1This standard is issued under the fixed designation D1929;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This fire test response test method2covers a laboratorydetermination of the flash ignition temperature and spontane-ous ignition temperature of plastics using a hot-air furnace.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 CautionDuring the course of combustion,gases orvapors,or both,are evolved that have the potential to behazardous to personnel.1.4 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat andflame under controlled conditions,but does not by itselfincorporate all factors required for fire-hazard or fire-riskassessment of the materials,products,or assemblies underactual fire conditions.1.5 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific precau-tionary statements are given in 1.3 and 1.4.NOTE1This test method and ISO 871-1996 are identical in alltechnical details.2.Referenced Documents2.1 ASTM Standards:3D618 Practice for Conditioning Plastics for TestingE176 Terminology of Fire Standards2.2 International Standards:4ISO 871-1996 PlasticsDetermination of Ignition Tempera-ture Using a Hot-Air FurnaceISO 5725 Precision of Test MethodsDetermination ofRepeatability and Reproducibility for Standard Test Meth-ods by Interlaboratory TestsIEC 584-2 ThermocouplesPart 2:Tolerances3.Terminology3.1 For definitions of terms relating to fire,see TerminologyE176.3.2 Definitions of Terms Specific to This Standard:3.2.1 flash ignition temperature(FIT)the minimum tem-perature at which,under specified test conditions,sufficientflammable gases are emitted to ignite momentarily uponapplication of a small external pilot flame.3.2.2 glowing combustioncombustion of a material in thesolid phase without flame but with emission of light from thecombustion zone,caused by slow decomposition and carbon-ization at various points in the specimen,without generalignition occurring.3.2.3 spontaneous ignition temperature or self-ignition tem-perature(SIT)the minimum temperature at which the self-heating properties of the specimen lead to ignition or ignitionoccurs of itself,under specified test conditions,in the absenceof any additional flame ignition source.4.Significance and Use4.1 Tests made under conditions herein prescribed can be ofconsiderable value in comparing the relative ignition charac-teristics of different materials.Values obtained represent thelowest ambient air temperature that will cause ignition of the1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.30 on Thermal Proper-ties.30.03).Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1962.Last previous edition approved in 2013 as D1929 13a.DOI:10.1520/D1929-14.In 1996,this test method was totally revised to be technically equal to ISO871-1996,and a specific air velocity is specified,which eliminates the need forapproximations.2The following reference may be of interest in connection with this test method:Stetchkin,N.P.,“A Method and Apparatus for Determining the Ignition Charac-teristics of Plastics,”Journal of Research,National Institute of Standards andTechnology,Vol 43,No.6,December 1949(RP 2052),p.591.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 material under the conditions of this test.Test values areexpected to rank materials according to ignition susceptibilityunder actual use conditions.4.2 This test is not intended to be the sole criterion for firehazard.In addition to ignition temperatures,fire hazardsinclude other factors such as burning rate or flame spread,intensity of burning,fuel contribution,products of combustion,and others.5.Appa