1、Designation:D480420Standard Test Method forDetermining the Flammability Characteristics of NonrigidSolid Plastics1This standard is issued under the fixed designation D4804;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of l
2、ast 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 methods describe small-scalelaboratory procedures for determining the comparative burningchara
3、cteristics of solid plastic materials that,due to specimenthinness and nonrigidity,distort,shrink,and/or are consumedup to holding clamp when tested using Test Method D3801.Aflame is applied to the base of specimens held in a verticalposition and the extinguishing times are determined uponremoval of
4、 the test flame.1.2 The classification system described in Appendix X1 isintended for quality assurance and the preselection of compo-nent materials for products.1.3 This standard measures and describes the response ofmaterials,products,or assemblies to heat and flame undercontrolled conditions,but
5、does not by itself incorporate allfactors required for fire hazard or fire risk assessment of thematerials,products,or assemblies under actual fire conditions.NOTE1This standard is equivalent to ISO 9773,IEC 60695-11-10,and UL 94(Section 11).NOTE2For rate of burning of nonrigid solid plastics in a h
6、orizontalposition,formerly Test Method B of this test method,see Test MethodD635.1.4 This test method is not intended to cover plastics whenused as materials for building construction or finishing.1.5 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be emplo
7、yed 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,health,and environmental practices and deter-mine the applicability of regulatory
8、limitations prior to use.For specific hazard statements,see 6.1.1.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-menda
9、tions issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD883 Terminology Relating to PlasticsD3801 Test Method for Measuri
10、ng 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 MaterialsE1
11、76 Terminology of Fire StandardsE456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2935 Practice for Conducting Equivalence Testing inLaboratory Applications2.2 ISO Standards:3ISO 9773:1998 PlasticsDeter
12、mination of Burning Behav-iour of Thin Flexible Vertical Specimens in Contact Witha Small Flame Ignition SourceISO 13943 Fire SafetyVocabulary3.Terminology3.1 DefinitionsFor definitions of terms relating to plastics,the definitions in this test method are in accordance withTerminology D883.For terms
13、 relating to fire,the definitions inthis test method are in accordance with Terminology E176 andISO 13943.In case of conflict,the definitions given inTerminology E176 shall prevail.For terms relating to precision1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the
14、direct responsibility of Subcommittee D20.30 on Thermal Properties.Current edition approved Feb.1,2020.Published March 2020.Originallyapproved in 1988.Last previous edition approved in 2019 as D4804 19a.DOI:10.1520/D4804-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
15、 ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes
16、 section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.and bias and associated issues,the
