ASTM_D_3308_-_12_2022.pdf

Designation:D330812(Reapproved 2022)Standard Specification forPTFE Resin Skived Tape1This standard is issued under the fixed designation D3308;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers skived tape in thicknessesfrom 0.013 to 6.35 mm(0.0005 to 0.250 in.)manufactured byskiving(Note 1)from PTFE resin molding and extrusionmaterials.NOTE1Skiving is the process of continuously shaving a film on alathe from the outer surface to the core of a molded cylindrical tube ofmaterial.NOTE2Abbreviations have been approved from Terminology D1600.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are for informa-tion only.1.3 The following hazard caveat pertains only to the testmethod portion,Section 8,of this specification:This standarddoes not 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,health,and environ-mental practices and determine the applicability of regulatorylimitations prior to use.NOTE3This specification and ISO 13000-1 and ISO 13000-2 differ inapproach or detail,and data obtained using either may not be technicallyequivalent.1.4 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:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD374 Test Methods for Thickness of Solid Electrical Insu-lation(Metric)D0374_D0374MD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD882 Test Method for Tensile Properties of Thin PlasticSheetingD883 Terminology Relating to PlasticsD1389 Test Method for Proof-Voltage Testing of Thin SolidElectrical Insulating Materials(Withdrawn 2013)3D1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4894 Specification for Polytetrafluoroethylene(PTFE)Granular Molding and Ram Extrusion Materials2.2 ISO Standards:4ISO 13000-1 PlasticsPolytetrafluorethylene(PTFE)Semi-Finished Products Part 1:Requirements and DesignationISO 13000-2PlasticsPolytetrafluorethylene(PTFE)Semi-Finished Products Part 2:Preparation of Specimensand Determination of Properties3.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology D883 unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 lot,none production run,or a uniform blend of twoor more production runs.3.2.2 film,nfull-width material received as finished film.3.2.3 Mil,n11000(0.001)of an inch.4.Classification4.1 This specification covers four types of PTFE resinskived tape:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials(Section D20.15.12).Current edition approved May 1,2022.Published May 2022.Originallyapproved in 1974.Last previous edition approved in 2017 as D3308-12(2017).DOI:10.1520/D3308-12R22.2For 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 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.14.1.1 Type IPremium;normally used for exactingelectrical,mechanical,or chemical applications.4.1.2 Type IIGeneral purpose;for electrical,mechanical,and chemical applications not requiring premium material.4.1.3 Type IIICommercial;for non-critical chemical,electrical,and mechanical ap