ASTM_D_6109_-_19.pdf

Designation:D610919Standard Test Methods forFlexural Properties of Unreinforced and Reinforced PlasticLumber and Related Products1This standard is issued under the fixed designation D6109;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 These test methods are suitable for determining theflexural properties for any solid or hollow manufactured plasticlumber product of square,rectangular,round,or other geomet-ric cross section that shows viscoelastic behavior.The testspecimens are whole“as manufactured”pieces without anyaltering or machining of surfaces beyond cutting to length.Assuch,this is a test method for evaluating the properties ofplastic lumber as a product and not a material property testmethod.Flexural strength cannot be determined for thoseproducts that do not break or that do not fail in the extremeouter fiber.1.2 Test Method A,designed principally for products in theflat or“plank”position.1.3 Test Method B,designed principally for those productsin the edgewise or“joist”position.1.4 Plastic lumber currently is produced using several dif-ferent plastic manufacturing processes.These processes utilizea number of diverse plastic resin material systems that includefillers,fiber reinforcements,and other chemical additives.Thetest methods are applicable to plastic lumber products wherethe plastic resin is the continuous phase,regardless of itsmanufacturing process,type or weight percentage of plasticresin utilized,type or weight percentage of fillers utilized,typeor weight percentage of reinforcements utilized,and type orweight percentage of other chemical additives.1.4.1 Alternative to a single resin material system,diverseand multiple combinations of both virgin and recycled thermo-plastic material systems are permitted in the manufacture ofplastic lumber products.1.4.2 Diverse types and combinations of inorganic andorganic filler systems are permitted in the manufacturing ofplastic lumber products.Inorganic fillers include such materi-als as talc,mica,silica,wollastonite,calcium carbonate,and soforth.Organic fillers include lignocellulosic materials made orderived from wood,wood flour,flax shive,rice hulls,wheatstraw,and combinations thereof.1.4.3 Fiber reinforcements used in plastic lumber includemanufactured materials such as fiberglass(chopped orcontinuous),carbon,aramid and other polymerics;orlignocellulosic-based fibers such as flax,jute,kenaf,and hemp.1.4.4 A wide variety of chemical additives are added toplastic lumber formulations to serve numerous different pur-poses.Examples include colorants,chemical foaming agents,ultraviolet stabilizers,flame retardants,lubricants,anti-staticproducts,biocides,heat stabilizers,and coupling agents1.5 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 standard.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 limitations prior to use.NOTE1There is no known ISO equivalent to this standard.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-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD2915 Practice for Sampling and Data-Analysis for Struc-tural Wood and Wood-Based ProductsD5033 Guide for Development ofASTM Standards Relating1These test methods are under the jurisdiction of ASTM Committee D20 onPlastics and are the direct responsibility of Subcommittee D20.20 on Plastic Lumber(Section D20.20.01).Current edition approved April 1,2019.Published May 2019.Originallyapproved in 1997.Last previous edition approved in 2013 as D6109-13.DOI:10.1520/D6109-19.2For 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.*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 developed in accordance with internationally recognized principles on standardization established in the Decision on Princ