ASTM D4969-17(2022) - 1.5.2022
 
1. Scope

1.1?This specification covers glass fabric impregnated, coated, and sintered on both sides with PTFE to a nominal thickness of 0.318 mm (0.015 in.) or less.

1.2?The PTFE-coated glass fabric is for electrical, chemical, and mechanical uses.

1.3?The PTFE-coated glass fabric of this specification does not pertain to structural fabric, single-sided PTFE coatings, or materials used for laminates.

1.4?The values stated in SI units as detailed in IEEE/ASTM SI-10.

Note 1:?There is no ISO standard that covers information included in this specification. The dielectric test is mentioned in ISO 12086-2 and ISO 13000-1 and -2.

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.

 
2. Referenced Documents

D149-25

Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

D257-14(2021)e1

Standard Test Methods for DC Resistance or Conductance of Insulating Materials (Includes all amendments and changes 5/6/2021).

D374-99

Standard Test Methods for Thickness of Solid Electrical Insulation

D579-09

Standard Specification for Greige Woven Glass Fabrics

D618-21

Standard Practice for Conditioning Plastics for Testing

D4441-20(2025)

Standard Specification for Aqueous Dispersions of Polytetrafluoroethylene

IEEE/ASTM SI-10

Standard for Use of the International System of Units (SI): The Modern Metric System

ISO 13000–1 and 2

Plastics--Polytetrafluoroethylene (PTFE) Semi-Finished Products

D751-19

Standard Test Methods for Coated Fabrics

D123-23

Standard Terminology Relating to Textiles

D737-18(2023)

Standard Test Method for Air Permeability of Textile Fabrics

D902-12

Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation (Withdrawn 2020)

D883-26

Standard Terminology Relating to Plastics

D3892-15(2020)

Standard Practice for Packaging/Packing of Plastics

D1424-25

Standard Test Method for Tearing Strength of Fabrics by Falling-Pendulum (Elmendorf-Type) Apparatus