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ASTM D 4745 : 2019

Current
Current

The latest, up-to-date edition.

Standard Classification System and Basis for Specification for Filled Polytetrafluoroethlyene (PTFE) Molding and Extrusion Materials Using ASTM Methods
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

05-01-2019

Publisher

American Society for Testing and Materials

This specification covers polytetrafluoroethylene(PTFE) filled molding compounds made with virgin PTFE resins defined in a certain specification except Types I, IV, V, and VI.

1.1This standard classification system and basis for specification covers polytetrafluoroethylene (PTFE) filled molding compounds made with virgin PTFE resins defined in Specification D4894, as Types II and III.

Note 1:This system can be used as a model for other PTFE compounds having particulate fillers that can survive the sintering temperatures of PTFE as can those listed in this standard. This system is restricted to virgin PTFE base resin for technical reasons. Recycled or reprocessed material cannot be processed successfully.

Note 2:The properties measured on commercially fabricated parts may differ from the listed values for samples prepared by the procedures given in this specification, depending on part geometry and processing parameters. Compounds used for ram extrusion are made from resins that comply with ASTM-D4745 Type II prior to their pre-sintering process. Property values measured on extruded products will vary from the listed values for Type II compounds which are prepared by the procedures given below which standardize mold diameter and sintering cycle. End users should assess these expected variations in ram extruded products to ensure their suitable use in their specific application.

1.2The values stated in SI units are to be regarded as standard.

1.3The following statement applies to the test method portion, Section 11, 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. See Note 5 for a specific warning statement.

Note 3:There is no known ISO equivalent to this standard.

1.4This 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.

Committee
D 20
DocumentType
Standard
Pages
6
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 4000 : 2016 Standard Classification System for Specifying Plastic Materials
ASTM D 4894 : 2019 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials

ASTM D 1600 : 1999 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 1708 : 1996 Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens
ASTM D 883 : 2023 Standard Terminology Relating to Plastics
ASTM D 1708 : 2006 : REV A Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
ASTM D 3892 : 2015 : R2020 Standard Practice for Packaging/Packing of Plastics
ASTM D 4894 : 1998 : REV A Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 883 : 2024 Standard Terminology Relating to Plastics
ASTM D 4894 : 2007 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 3892 : 1993 : R2003 Standard Practice for Packaging/Packing of Plastics
ASTM D 3892 : 2015 Standard Practice for Packaging/Packing of Plastics
ASTM D 1708 : 2002 Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens
ASTM D 883 : 2022 Standard Terminology Relating to Plastics
ASTM D 1708 : 2006 Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
ASTM D 883 : 2020 : REV B Standard Terminology Relating to Plastics
ASTM D 3892 : 1993 : R1998 Standard Practice for Packaging/Packing of Plastics
ASTM D 1600 : 2007 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 1600 : 2013 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 1600 : 2014 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 1600 : 2008 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 4894 : 2004 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 1600 : 2018 Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
ASTM D 1708 : 2013 Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
ASTM D 4894 : 2015 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 1708 : 2010 Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
ASTM D 4894 : 2019 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 4894 : 2007 : R2012 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
ASTM D 3892 : 1993 : R2009 Standard Practice for Packaging/Packing of Plastics
ASTM D 1708 : 2002 : REV A Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens
ASTM D 1708 : 2018 Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens

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