ASTM_D_6457_-_08_2013.pdf

Designation:D645708(Reapproved 2013)Standard Specification forExtruded and Compression Molded Rod and Heavy-WalledTubing Made from Polytetrafluoroethylene(PTFE)1This standard is issued under the fixed designation D6457;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.Scope1.1 This specification is intended to be a means of callingout plastic product used in the fabrication of end items or parts.1.2 This specification covers requirements and test methodsfor the material,dimensions,and workmanship,and the prop-erties of extruded-and compression-molded rod,and heavy-walled tube manufactured from granular unfilled PTFE resin inaccordance with Specification D4894.1.3 This specification covers rod and heavy-walled tubingmade wholly from polytetrafluoroethylene and produced inaccordance with good commercial practice.1.4 The properties included in this specification are thoserequired for the compositions covered.Requirements neces-sary to identify particular characteristics important to special-ized applications are described by using the classificationsystem given in Section 4.1.5 This specification allows for the use of recycled plasticsas defined in Guide D7209.1.6 The values stated in inch-pound units are to be regardedas the standard in all property and dimensional tables.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 use.NOTE1Although this specification and ISO 13000-1 and ISO13000-2 differ in approach or detail,data obtained using either aretechnically equivalent.2.Referenced Documents2.1 ASTM Standards:2D374 Test Methods for Thickness of Solid Electrical Insu-lation(Withdrawn 2013)3D638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1708 Test Method for Tensile Properties of Plastics by Useof Microtensile SpecimensD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD4591 Test Method for Determining Temperatures andHeats of Transitions of Fluoropolymers by DifferentialScanning CalorimetryD4894 Specification for Polytetrafluoroethylene(PTFE)Granular Molding and Ram Extrusion MaterialsD7209 Guide for Waste Reduction,Resource Recovery,andUse of Recycled Polymeric Materials and ProductsE94 Guide for Radiographic ExaminationIEEE/ASTM SI-10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System2.2 ISO Standard:4ISO 13000-1 PlasticsPolytetrafluoroethylene(PTFE)Semi-Finished ProductsPart I:Requirements and Des-ignationISO 13000-2 PlasticsPolytetrafluoroethylene(PTFE)Semi-Finished ProductsPart II:Preparation of TestSpecimens and Determination of Properties3.Terminology3.1 Definitions:3.1.1 Terms are defined in accordance with TerminologyD883 unless otherwise specified.3.1.2 heavy-walled tubing,nan annular shape with aminimum wall thickness of116in.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials(D20.15.12 on Fluoropolymers).Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1999.Last previous edition approved in 2008 as D6457-08.DOI:10.1520/D6457-08R13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.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 States1 3.1.3 lot,none production run or a uniform blend of twoor more production runs.3.1.4 rod,na solid cylindrical shape.3.2 Abbreviations:3.2.1 Abbreviations are in accordance with TerminologyD1600 unless otherwise indicated.3.2.2 PTFEpolytetrafluoroethylene4.Classification4.1 Product shape and size is defined in the applicablepurchase order.4.2 Thisspecificationcoversproduct-extrudedandcompression-molded as listed in Tables 1 and 2.4.2.1 The type of PTFE shape product is categorized bytype,class,and grade as defined in Tables 1 and 2.4.2.2 Each type of PTFE shape is categorized into one of thefo