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ASTM D3294-03

(Specification)

Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes

Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes

ABSTRACT
This specification establishes the requirements and test methods for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet manufactured from polytetrafluoroethylene (PTFE) resin molding materials and molded basic shapes made from resin molding and extrusion materials. The sheet or molded basic shape shall be made from unpigmented PTFE and shall be free from foreign matters. Each of the samples shall undergo visual and dimensional inspection to verify their compliance with the standard requirements. The specimens shall conform to the following physical and electrical property requirements: tensile strength; elongation; dielectric strength; specific gravity; porosity; and melting point. Examination for internal defects shall also be conducted to ensure that the specimens are free from microscopic cracks, voids, inclusions, and other surface defects that might affect the serviceability of the materials.
SCOPE
1.1 This specification establishes requirements and methods of test for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet in minimum thicknesses of 0.794 mm ( 1/32 in.) manufactured from PTFE resin molding materials.
1.2 This specification also establishes requirements for molded basic shapes made from resin molding and extrusion materials. This specification is for products 0.3 mm (12 in.) or less in a dimension parallel to and 12.7 mm (0.5 in.) or greater in the dimension perpendicular to the direction of the applied molding pressure.  
1.3 The values stated in SI units are to be regarded as the standard.
1.4 The following precautionary caveat pertains only to the test method portion, Section 7, of this specification. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Special attention is called to sections 13.2, 13.3, 13.6, 13.8, and A1.

General Information

Status
Historical
Publication Date
09-Apr-2003
ICS
83.140.99 - Other rubber and plastics products
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D3294-97 - Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes
Effective Date
10-Apr-2003
Replaced By
ASTM D3294-09 - Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes
Effective Date
01-Nov-2009
Referred By
ASTM F754-08(2015) - Standard Specification for Implantable Polytetrafluoroethylene (PTFE) Sheet, Tube, and Rod Shapes Fabricated from Granular Molding Powders
Effective Date
10-Apr-2003
Referred By
ASTM F1511-18(2023) - Standard Specification for Mechanical Seals for Shipboard Pump Applications
Effective Date
10-Apr-2003
Referred By
ASTM F336-02(2023) - Standard Practice for Design and Construction of Nonmetallic Enveloped Gaskets for Corrosive Service
Effective Date
10-Apr-2003

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ASTM D3294-03 - Standard Specification for PTFE Resin Molded Sheet and Molded Basic ShapesASTM D3294-03 - Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes
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ASTM D3294-03 - Standard Specification for PTFE Resin Molded Sheet and Molded Basic Shapes
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D3294 – 03
Standard Specification for
Polytetrafluoroethylene (PTFE) Resin Molded Sheet and
1
Molded Basic Shapes
This standard is issued under the fixed designation D3294; 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* D1505 Test Method for Density of Plastics by the Density-
3
Gradient Technique
1.1 This specification establishes requirements and methods
D1600 Terminology for Abbreviated Terms Relating to
of test for the material, dimensions, and workmanship, and the
3
Plastics
physical and electrical properties of molded sheet in minimum
1 D1708 Test Method for Tensile Properties of Plastics by
thicknesses of 0.794 mm [ ⁄32 in.] manufactured from PTFE
4
Use of Microtensile Specimens
resin molding materials.
5
D3892 Practice for Packaging/Packing of Plastics
1.2 This specification also establishes requirements for
D4591 Test Method for Determining Temperatures and
molded basic shapes made from resin molding and extrusion
Heats of Transitions of Fluoropolymers by Differential
materials. This specification is for products 300 mm [12 in.] or
5
Scanning Calorimetry
less in a dimension parallel to and 12.7 mm [0.5 in.] or greater
D4894 Specification for Polytetrafluoroethylene (PTFE)
in the dimension perpendicular to the direction of the applied
6
Granular Molding and Ram Extrusion Materials
molding pressure.
E94 Guide for Radiographic Examination
1.3 The values stated in SI units are to be regarded as the
IEEE/ASTM SI-10 American National Standard for Use of
standard.
the International System of Units (SI): The Modern Metric
1.4 The following precautionary caveat pertains only to the
7
System
test method portion, Section 7, of this specification. This
standard does not purport to address all of the safety concerns,
3. Terminology
if any, associated with its use. It is the responsibility of the user
3.1 Definitions:
of this standard to establish appropriate safety and health
3.1.1 Definitions are in accordance with Terminology D883
practices and determine the applicability of regulatory limita-
unless otherwise specified.
tions prior to use.Specialattentioniscalledto13.2,13.3,13.6,
3.1.2 lot, n—one continuous production run or a uniform
13.8, and A1.
blend of two or more production runs of one size sheet or
NOTE 1—There is no similar or equivalent ISO standard.
molded basic shape.
3.2 Abbreviations:Abbreviations are in accordance with
2. Referenced Documents
Terminology D1600.
2
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and
4. Classification
Dielectric Strength of Solid Electrical Insulating Materials
4.1 This specification covers the following four types of
3
at Commercial Power Frequencies
molded basic sheets and shapes:
3
D618 Practice for Conditioning Plastics for Testing
4.1.1 Type I—Premium; normally used for exacting electri-
3
D638 Test Method for Tensile Properties of Plastics
cal, mechanical, or chemical applications.
D792 Test Methods for Density and Specific Gravity (Rela-
4.1.2 Type II—General purpose; for electrical, mechanical,
3
tive Density) of Plastics by Displacement
and chemical applications not requiring premium material.
3
D883 Terminology Relating to Plastics
4.1.3 Type III—Mechanical Grade; for non-critical chemi-
cal, electrical, and mechanical applications.
4.1.4 Type IV—Utility; having no electrical requirements
1
and with mechanical properties at a lower level.
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials (Section D20.15.12).
4
Current edition approved April 10, 2003. Published June 2003. Originally Annual Book of ASTM Standards, Vol 08.02.
5
approved in 1974. Last previous edition approved in 1997 as D3294 - 97. DOI: Annual Book of ASTM Standards, Vol 08.03.
6
10.1520/D3294-03. Annual Book of ASTM Standards, Vol 03.03.
2 7
Annual Book of ASTM Standards, Vol 10.02. Available from ASTM International, 100 Barr Harbor Drive, C700, West
3
Annual Book of ASTM Standards, Vol 08.01. Conshohocken, PA 19428.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3294 – 03
A
TABLE 1 Physical and Electrical Requirements for PTFE Sheets
4.2 Types I, II, and III shall be subdivided into two grades
as follows: Dielectric
Tensile Elonga-
B C
Strength Specific
A A D
4.2.1 Grade 1—made only from virgin resin.
Types Strength tion (min) Porosity
(min) Vol
...

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SCOPE
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Standard Classification System and Basis for Specification for Polyphthalamide (PPA) Injection Molding Materials

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1.1 This classification system covers polyphthalamide (PPA) materials suitable for injection molding.  
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Standard Classification System and Basis for Specification for Cellulose Acetate Propionate Molding and Extrusion Compounds (CAP)

SCOPE
1.1 This classification system covers requirements for plasticized cellulose acetate propionate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a propionyl content less than 48 % and an acetyl content less than 3 % and can contain dyes and pigments. Cellulosic plastic materials, being thermoplastic, are reprocessable and recyclable. This classification system allows for the use of those cellulosic materials, provided that all specific requirements of this classification system are met.  
1.2 The properties included in this classification system are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are specified by using the suffixes as given in Section 5.  
1.3 This classification system and subsequent line call out specification are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastic field only after careful consideration of the design and performance required of the part, environment to which it will be exposed, fabrication process to be employed, costs involved, and inherent properties of the material other than those covered by this classification system.  
1.4 The values stated in SI units are to be regarded as standard.  
1.5 The following safety hazards caveat pertains only to the test method portion, Section 11, of this classification system. 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 1: There is no known ISO equivalent to this standard.  
1.6 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.

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ASTM
ASTM D3294-22(Specification)
Standard Specification for Polytetrafluoroethylene (PTFE) Resin Molded Sheet and Molded Basic Shapes

ABSTRACT
This specification establishes the requirements and test methods for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet manufactured from polytetrafluoroethylene (PTFE) resin molding materials and molded basic shapes made from resin molding and extrusion materials. The sheet or molded basic shape shall be made from unpigmented PTFE and shall be free from foreign matters. Each of the samples shall undergo visual and dimensional inspection to verify their compliance with the standard requirements. The specimens shall conform to the following physical and electrical property requirements: tensile strength; elongation; dielectric strength; specific gravity; porosity; and melting point. Examination for internal defects shall also be conducted to ensure that the specimens are free from microscopic cracks, voids, inclusions, and other surface defects that might affect the serviceability of the materials.
SCOPE
1.1 This specification establishes requirements and methods of test for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet in minimum thicknesses of 0.794 mm (1/32 in.) manufactured from PTFE resin molding materials defined in Specification D4894.  
1.2 This specification also establishes requirements for molded basic shapes made from molding materials. This specification is for products 300 mm (12 in.) or less in a dimension parallel to and 12.7 mm (0.5 in.) or greater in the dimension perpendicular to the direction of the applied molding pressure.  
1.3 The values stated in SI units are to be regarded as the standard.  
1.4 The following precautionary caveat pertains only to the test method portion, Section 7, 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. Special attention is called to 13.2, 13.3, 13.6, 13.8, and A1.  
Note 1: There is no known ISO equivalent to this standard.  
1.5 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.

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  • Technical specification
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