1、Designation:D345320Standard Specification forFlexible Cellular MaterialsUrethane for Furniture andAutomotive Cushioning,Bedding,and Similar Applications1This standard is issued under the fixed designation D3453;the number immediately following the designation indicates the year oforiginal adoption o
2、r,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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1
3、 This specification covers flexible cellular urethane ma-terials intended for such uses as inserts for furniture cushions,mattresses,and similar applications.1.2 This specification provides material and dimensionalrequirements and methods of tests for specific properties ofload bearing,compression s
4、et,humid age resistance,poundingfatigue resistance,support factor and resilience.1.3 This specification includes references to governmentregulations for burning characteristics of flexible cellularmaterial used in specified applications.1.4 The values stated in SI units are to be regarded as thestan
5、dard.The values given in parentheses are for informationonly.1.5 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
6、the applicability of regulatory limitations prior to use.NOTE1There is no equivalent ISO standard.1.6 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
7、Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded,and Molded Urethane FoamsD3675 Test Method for Surface Flammability of Flexibl
8、eCellular Materials Using a Radiant Heat Energy Source2.2 Federal Documents:316CFR1632(Previously Doc FF4-72)Standard for theFlammability of Mattresses and Mattress Pads16CFR1633 Standard for the Flammability(Open Flame)ofMattress Sets49CFR571.302 Federal Motor Vehicle Safety Standards,Flammability
9、of Interior Materials14CFR25.853 Airworthiness Standards:Transport CategoryAirplanes,Compartment Interiors(DOT Federal AviationRegulation,(FAR),Part 25.853),Paragraph(b),and Ap-pendix FSimplified Practice Recommendations R2-62 Bedding Prod-ucts and Components(Mattresses,Springs,Bedsteads,and Cots)43
10、.Classification3.1 This specification covers eight grades of flexible cellularmaterial that have been selected for use in accordance withload bearing and general physical properties,Table 1;fourgrades based on pounding-fatigue properties,Table 2;threegrades based on cushioning performance properties
11、,Table 3.4.Basis of Purchase4.1 Any product represented as complying with this speci-fication shall meet all the requirements listed herein for itsparticular classification.5.Burning Characteristics5.1 Several fire performance requirements applicable toflexible cellular materials can be found in reg
12、ulations,codesand specifications,including the following(which is providedfor information purposes but is not intended to be a compre-hensive list).1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.22 on CellularMateri
13、als-Plastics and Elastomers.Current edition approved Sept.1,2020.Published September 2020.Originallyapproved in 1976.Last previous edition approved in 2012 as D3453 12.DOI:10.1520/D3453-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceas
14、tm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the Superintendent of Documents,U.S.Government PublishingOffice,Washington,DC 20402,http:/www.govinfo.gov,http:/www.ecfr.gov.4Available from the Clearing House f
15、or Federal Scientific and TechnicalInformation,5285 Port Royal Rd.,Springfield,VA 22151.*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 StatesThis international standard was develop
16、ed 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.5.1.1 FMVSS 302(49 CFR 571.302)is used by the NationalHighway Transit Safety Administration for automotive interi-ors);source www.ecfr.gov5.1.2 16 CFR 1632 is used by the Consumer Product SafetyCommission for mattress compone