ASTM D6585-17(2022)
(Specification)Standard Specification for Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or Tape
Standard Specification for Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or Tape
ABSTRACT
This specification covers three types and several grades of unsintered extruded films or tapes manufactured from virgin, unpigmented polytetrafluoroethylene in specified nominal thicknesses. Having different apparent densities, the three types of tapes covered here are: thread seal tapes (Type I); low density tapes (Type II); and wire and cable tapes (Type III). Individual grades shall adhere accordingly to thickness, tensile strength at yield, and elongation at maximum strength requirements.
SCOPE
1.1 This specification covers unsintered extruded films or tapes manufactured from virgin, unpigmented polytetrafluoroethylene, in nominal thickness from 0.025 to 0.51 mm (0.001 to 0.020 in.), which are ≥99 % PTFE in composition.
Note 1: For unsintered pigmented products, refer to Specification D7193.
1.1.1 The use of recycled PTFE for production of unsintered extruded films or tapes has not been identified at this time. When commercial usable processes and materials are available, this specification will be revised to include recycled materials.
1.2 The values stated in SI units are detailed in IEEE/ASTM SI-10 are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following precautionary statement pertains only to the test method portion, Section 8 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 2: Although this specification and ISO 13000-1 and ISO 13000-2 differ in approach or detail, data obtained relating to specific properties, using either are technically equivalent.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D6585 −17 (Reapproved 2022)
Standard Specification for
Unsintered Polytetrafluoroethylene (PTFE) Extruded Film or
Tape
This standard is issued under the fixed designation D6585; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This specification covers unsintered extruded films or 2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and
tapes manufactured from virgin, unpigmented
DielectricStrengthofSolidElectricalInsulatingMaterials
polytetrafluoroethylene, in nominal thickness from 0.025 to
0.51 mm (0.001 to 0.020 in.), which are ≥99 % PTFE in at Commercial Power Frequencies
D150 Test Methods forAC Loss Characteristics and Permit-
composition.
tivity (Dielectric Constant) of Solid Electrical Insulation
NOTE 1—For unsintered pigmented products, refer to Specification
D257 Test Methods for DC Resistance or Conductance of
D7193.
Insulating Materials
1.1.1 TheuseofrecycledPTFEforproductionofunsintered D618 Practice for Conditioning Plastics for Testing
extruded films or tapes has not been identified at this time.
D882 Test Method for Tensile Properties of Thin Plastic
When commercial usable processes and materials are Sheeting
available, this specification will be revised to include recycled D883 Terminology Relating to Plastics
materials. D1600 Terminology forAbbreviatedTerms Relating to Plas-
tics
1.2 ThevaluesstatedinSIunitsaredetailedinIEEE/ASTM
D1711 Terminology Relating to Electrical Insulation
SI-10 are to be regarded as the standard. The values given in
D3892 Practice for Packaging/Packing of Plastics
parentheses are for information only.
D6040 Guide to Standard Test Methods for Unsintered
1.3 The following precautionary statement pertains only to Polytetrafluoroethylene (PTFE) Extruded Film or Tape
the test method portion, Section 8 of this specification: This D7193 Specification for Unsintered Pigmented Polytetra-
standard does not purport to address all of the safety concerns, fluoroethylene (PTFE) Extruded Film or Tape
if any, associated with its use. It is the responsibility of the user E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
of this standard to establish appropriate safety, health, and
IEEE/ASTM SI-10 Standard for Use of the International
environmental practices and determine the applicability of
System of Units (SI): The Modern Metric System
regulatory limitations prior to use.
2.2 ISO Standard:
NOTE 2—Although this specification and ISO 13000-1 and
ISO 13000-2 differ in approach or detail, data obtained relating to specific ISO 13000-1 Plastics—Polytetrafluoroethylene (PTFE)
properties, using either are technically equivalent.
Semi-Finished Products—Part 1: Requirements and Des-
ignation
1.4 This international standard was developed in accor-
ISO 13000-2 Plastics—Polytetrafluoroethylene (PTFE)
dance with internationally recognized principles on standard-
Semi-Finished Products—Part 2: Preparation of Test
ization established in the Decision on Principles for the
Specimens and Determination of Properties Designation
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1 2
This specification is under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2022. Published May 2022. Originally the ASTM website.
approved in 2000. Last previous edition approved in 2017 as D6585 - 17. DOI: Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D6585-17R22. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6585−17 (2022)
2.3 GSA Standard: type. Separators are not needed between the type and grade
A-A-58092 Tape, Anti-seize, Polytetrafluorethylene because they are, in turn, Roman numerals andArabic digits as
provided in Section B8 of the Form and Style for ASTM
NOTE 3—Supersedes MIL-T-27730A (ASG) 7 January 1997.
Standards. Provision for “Special Notes” is included so that
3. Terminology other information is provided when required. This example
relates to wire and cable tape with no special or added
3.1 Definitions: Definitions are in accordance with Termi-
requirements. When special notes are used, they shall be
nology D1711,Terminology D883, andTest Method D257 and
preceded by a comma.
abbreviated terms are in accordance with Terminology D1600,
unless otherwise specified.
5. Performance Requirements
3.1.1 lot, n—one production run or a uniform blend of two
or more production runs.
5.1 Basic requirements from the property tables are always
in effect unless superseded by specific suffix requirements,
3.2 Definitions of Terms Specific to This Standard:
which always take precedence.
3.2.1 film, n—full width material received as finished film.
3.2.2 tape, n—material that has been slit from the finished
5.2 The materials shall conform to the requirements in
film.
Tables 1-4 and suffix requirements as they apply.
3.2.3 tensile strength at yield, n—from Test Methods D882.
5.3 Thedielectricbreakdownstrengthofunsinteredsamples
shall be tested in accordance with Test Method D149. The
4. Classification
required values are to be agreed upon between producer and
4.1 This specification covers three types of unsintered
consumer.
extruded PTFE tapes:
5.4 If invoked by contract, or to gain understanding of the
4.1.1 Type I—Thread seal tape (T.S.T.) with an apparent
electrical performance consistency of a particular material
density of 0.50 to 1.60 g/cm .
dielectric constant and volume resistivity shall be tested in
4.1.2 Type II—Low density tape with an apparent density of
accordance with Test Methods D150 and D257, as seen in the
0.60 to 0.80 g/cm .
4.1.3 Type III—Wireandcabletapewithanapparentdensity guidelines found in Guide D6040.
of 1.50 to 1.70 g/cm .
5.5 The width tolerance of slit tape shall be in accordance
4.2 Grades of tape are identified in Tables 1-3.
with Table 4 unless otherwise specified by contract.
NOTE 4—Other products that do not fall into these ranges are available.
6. Sampling
The values vary on these products and must be agreed to between supplier
and purchaser.
6.1 Sampling shall be in accordance with an adequate
4.3 Aline callout system is used to specify materials in this
statistical sampling procedure.
specification. The system uses pre-defined cells to refer to
specific aspects of this specification, as illustrated below:
7. Conditioning
Standard Number Type Specification Class Special Notes
Block Grade
7.1 For those tests where conditioning is required, condition
Example: III 2 mil — —
the test specimens in accordance with Procedure A of Practice
ASTM D6585
D618, except the time shall be for a period of at least 4 h prior
For this example, the line call-out would be:ASTM D
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