1、Designation:D686719Standard Specification forPerfluoroalkoxy(PFA)-Fluoropolymer Tubing1This standard is issued under the fixed designation D6867;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers tubing produced from PFAFluoropolymer resins which are cited in Specification D3307.This document specifies tubing dimension
3、al tolerances,tensileproperties and related electrical properties as noted in theappropriate tables when tested in accordance with the methodscited in this specification.This specification is for virginmaterial only and does not address recycled material,as it isnot appropriate for PFA tubing.NOTE1A
4、bbreviations are in accordance with Terminology D1600.NOTE2There is no known ISO equivalent to this standard.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.3 The following safety hazards caveat pertains only to thetest method
5、s portion,Section 7,of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregula
6、tory limitations prior to use.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 Orga
7、nization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbb
8、reviated Terms Relating to Plas-ticsD1675 Test Methods for Polytetrafluoroethylene TubingD3307 Specification for Perfluoroalkoxy(PFA)Resin Mold-ing and Extrusion MaterialsD4894 Specification for Polytetrafluoroethylene(PTFE)Granular Molding and Ram Extrusion MaterialsIEEE/ASTM SI 10 Standard for Use
9、 of the InternationalSystem of Units(SI):The Modern Metric System33.Terminology3.1 Definitions:3.1.1 Definitions are in accordance with Terminology D883unless otherwise specified.3.1.2 lot,none continuous production run or a uniformblend of two or more production runs of one size sheet ormolded basi
10、c shape.4.Physical Requirements4.1 The tubing shall be made of PFA-fluoropolymer resinmeeting the requirements of Specification D3307.4.2 The inside diameter and wall thickness and tolerances ofthe tubing shall be as shown in Table 1,when determined inaccordance with 7.1.3.1 and 7.1.3.2.4.3 The spec
11、ific gravity of the tubing shall be between 2.12and 2.17 inclusive when determined in accordance with 7.1.4.4.4 The tubing shall have a minimum tensile strength of10.0 MPa(1500 psi)and a minimum elongation of 200%when determined in accordance with 7.1.5.4.5 The tubing shall remain free from cracks a
12、nd exhibit nosplitting when tested for dimensional stability in accordancewith 7.1.6.5.Sampling5.1 Sampling shall be statistically adequate to satisfy therequirements of 8.2.6.Number of Tests6.1 One set of test specimens as described in Section 7 shallbe considered sufficient for testing each batch.
13、The average1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Oct.1,2019.Published October 2019.Originallyapproved in 2003.Last previous edition approved in 2014 as
14、D6867-03(2014).DOI:10.1520/D6867-19.2For 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.3Available from ASTM Internati
15、onal Headquarters,100 Barr Harbor Drive,POBox C700,West Conshohocken,PA 194282959.*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
16、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 result of the specimens tested shall conform to the require-ments of this specification.7.Test Methods7.1 The properties enumerated in this specification shall bedetermined in accordance with the following methods.7.1.1 Condition
