ASTM_D_6712_-_17.pdf

Designation:D671217Standard Specification forUltra-High-Molecular-Weight Polyethylene(UHMW-PE)SolidPlastic Shapes1This standard is issued under the fixed designation D6712;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.INTRODUCTIONThis specification is intended to be a means of defining Ultra-High-Molecular-Weight2Polyethylene(UHMW-PE)solid plastic shapes for commercial use.1.Scope*1.1 This specification covers requirements and test methodsfor the material and properties of solid plastic shapes manu-factured from UHMW-PE.1.2 The properties included in this specification are thoserequired for the compositions covered and are derived frommolded samples or fabricated from sheet,rod and profiles.Requirements necessary to identify particular characteristicsimportant to specialized applications are described by using theclassification system given in Section 4.1.3 This specification allows for the use of recycled plastics(as defined in Guide D5033).1.4 The values are stated in SI units and are to be regardedas the standard in all property tables.For reference purposes,English units are also included in Table S-UHMW-PE andTable A and are not necessarily exact equivalents.1.5 The following precautionary caveat pertains only to thetest method portions of this specification.This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory requirementsprior to use.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:3D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD4020 Specification for Ultra-High-Molecular-Weight Poly-ethylene Molding and Extrusion MaterialsD5033 Guide for Development ofASTM Standards Relatingto Recycling and Use of Recycled Plastics(Withdrawn2007)42.2 ISO Standard:ISO 11542-2 Ultra-High-Molecular Weight Polyethylene(PE-UHMW)Moulding MaterialsPart 2:Preparation ofTest Specimens and Determination of Properties3.Terminology3.1 Definitions:3.1.1 For definitions of other technical terms pertaining toplastics used in this specification,see Terminology D883,D1600,or Guide D5033.3.2 Definitions of Terms Specific to This Standard:3.2.1 additive,nany material added to the polymer such asprocessing aids,stabilizers,and colorants.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved March 1,2017.Published March 2017.Originallyapproved in 2001.Last previous edition approved in 2009 as D6712-01(2009).DOI:10.1520/D6712-17.2Ultra High Molecular Weight refers to a polyethylene resin meeting therequirements of Specification D4020.3For 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.4The last approved version of this historical standard is referenced onwww.astm.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 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.1 3.2.2 recycled-plastic shape,na product made from up to100%post-consumer material.3.2.3 regrind(plastic),na product or scrap such as edgetrim that have been reclaimed by shredding and granulating foruse in-house.3.2.4 rod,nan extruded solid cylindrical shape with aminimum diameter of116in.3.2.5 sheet,nflat stock greater than 10 mils thickness.3.2.6 solid plastic shape,na product of various geom-etries made up of UHMW-PE,such as sheet,rod,and so forth.TABLE S-UHMW-PE Physical Property Requirements for Ultra High Molecular Weight Polyethylene Solid Plastic ShapesDescriptionTypeClassDescriptionGradeApplicableSpecificationCalloutDescriptionIzod impact,TestMethodfor D4020,min,kJ/m2(ft-lbs/in.2)Elongational Stress,Test Method forISO 11542-2(Annex 1),min,MpaTensile Elongation,Test Method forD638,%at break,minUHMW-PE011unfilled1ASTM D4020General purpose37(18)