1、Designation:D666801(Reapproved 2010)Standard Test Method forDiscrimination Between Flammability Ratings of F=0and F=11This standard is issued under the fixed designation D6668;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、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.Scope1.1 This test method covers a means for the discriminationbetween solid and liquid materials which will not burn in airwhen
3、exposed to a temperature of 1500F(815.5C)for aperiod of 5 min and those which will ignite and burn under thesame conditions.1.2 This test method may be applied to any substance whichis a solid or liquid at ambient temperature and pressure.1.3 The purpose of this test method is to provide a means for
4、the classification of the flammability hazard of materials ofhazard degrees(F=0)and(F=1)or both,in accordance withthe definitions of degrees of flammability hazard as defined byNFPA 704(par.3.2.1).1.4 This test method should be used subject to the limita-tions that no single fire hazard property suc
5、h as flash point,ignition temperature,or the performance under the conditionsof the present method shall be used to describe or appraise thefire hazard or fire risk of a material,product,assembly orsystem under actual fire conditions.Fire hazard propertiesmeasured under controlled laboratory conditi
6、ons may,nevertheless,be employed to describe properly the response ofmaterials,products,assemblies or systems under said con-trolled conditions.Properties measured under controlled labo-ratory conditions may be used as elements of hazard or riskassessment only when such assessment takes into account
7、 all ofthe factors that are pertinent to the evolution of the fire hazardof a given situation.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered s
8、tandard.1.6 This standard is used to predict or provide a quantitativemeasure of the fire hazard from a specified set of fire conditionsinvolving specific materials,products,or assemblies.Thisassessment does not necessarily predict the hazard of actualfires which involve conditions other than those
9、assumed in theanalysis.1.7 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
10、 use.2.Referenced Documents2.1 ASTM Standards:2D235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)2.2 NFPA Standards:3NFPA 704 Identification of the Hazards of Materials forEmergency Response3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1
11、 burning,nfor the purposes of this test method,burning shall be defined to include the presence of any visibleflame,sparks or glowing embers when the sample is exposed to1500F(815.5C)for 5 min under the conditions of the testmethod.Charring withouit visible evidence of flame,sparks,orglowing embers
12、shall not be considered to constitute burning.3.1.2 flammability hazard degree one(F=1),nmaterialsthat will burn in air when exposed to a temperature of 1500F(815.5C)for 5 min under the conditions of this test method orwhich,by reason of their flash point,fire point,autoignitiontemperature,or sustai
13、ned combustibility,would be rated asHazard Degree One regardless of their performance in this testmethod.3.1.3 flammability hazard degree zero(F=0),nmaterialsthat will not burn in air when exposed to a temperature of1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Produc
14、ts,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.L0.07 on Engineering Sciences of High Performance Fluids andSolids(Formally D02.1100).Current edition approved May 1,2010.Published May 2010.Originallyapproved in 2001.Last previous edition approved in 2006 as D6668 0
15、1(2006).DOI:10.1520/D6668-01R10.2For 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.3Available from National Fire Prot
16、ection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 1500F(815.5C)for 5 min under the conditions of this testmethod provided that they do not exhibit properties includingflash point,fire point,autoignition,or sustained combustibilitywhich might cause them to be rated or classified as a morehazardous material(that is,F=1 or higher).4.Summary of Test Method4.