ASTM_D_5048_-_14.pdf

Designation:D504814Standard Test Method forMeasuring the Comparative Burning Characteristics andResistance to Burn-Through of Solid Plastics Using a125-mm Flame1This standard is issued under the fixed designation D5048;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 method covers a small-scalelaboratory procedure for determining the relative burningcharacteristics and the resistance to burn-through of plasticsusing small bar and plaque specimens exposed to a 125-mm(500-W nominal)flame.NOTE1This test method is equivalent to IEC 60695-11-20.NOTE2For additional information on comparative burning character-istics of solid plastics in a vertical position,see Test Method D3801.1.2 This test method was developed for polymeric materialsused for parts in devices and appliances.The results areintended to serve as a preliminary indication of their accept-ability with respect to flammability for a particular application.The final acceptance of the material is dependent upon its usein complete equipment that conforms with the standardsapplicable to such equipment.1.3 The classification system described in Appendix X1 isintended for quality assurance and the preselection of compo-nent materials for products.1.4 If found to be appropriate,it is suitable to apply therequirements to other nonmetallic materials.Such applicationis outside the scope of this technical committee.1.5 This test method is not intended to cover plastics whenused as materials for building construction or finishing.1.6 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.7 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 hazards or fire riskassessment of materials,products,or assemblies under actualfire conditions.1.8 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.See 6.1.1 for aspecific hazard statement.2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD3801 Test Method for Measuring the Comparative BurningCharacteristics of Solid Plastics in a Vertical PositionD5025 Specification for Laboratory Burner Used for Small-Scale Burning Tests on Plastic MaterialsD5207 Practice for Confirmation of 20mm(50W)and125mm(500W)Test Flames for Small-Scale BurningTests on Plastic MaterialsE176 Terminology of Fire StandardsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 IEC Standard:3IEC 60695-11-20 Fire Hazard Testing-Part 11-20:TestFlames-500 W Flame Test Methods3.Terminology3.1 Definitions of TermsFor definitions of terms related toplastics used in this test method,refer to Terminology D883.For definitions of terms related to fire used in this test method,refer to Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 afterflamepersistence of flaming of a material,afterthe ignition source has been removed.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.30 on Thermal Properties.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 1990.Last previous edition approved in 2009 as D5048 09.DOI:10.1520/D5048-14.2For 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.3Publications of the International Electrotechnical Commission(IEC)areavailable from American National Standards Institute(ANSI),25 W.43rd St.,4thFloor,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 3.2.2 afterflame timethe length of time for which a mate-rial continues to flame,under specified conditions,after theignition source has been removed.3.2.3 afterglowpersistence of glowing of a material,aftercessation of flaming or,if no flaming occurs,after removal ofthe ignition source.3.2.4 afterglow timethe length of time for which a mate-rial continues to glow under specified test conditions,after theignition source has been removed or cessation of flaming,orboth.3.2.5 burn-througha hole produced in the plaque speci-men.4.Summary of Test