ASTM D3949-99(2004)

    Standard Specification for Coated Glass Fabrics Used for Electrical Insulation (Withdrawn 2013)

    Withdrawn Standard: ASTM D3949-99(2004) | Developed by Subcommittee: D09.07

    WITHDRAWN, NO REPLACEMENT


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    Formerly under the jurisdiction of Committee D09 on Electrical and Electronic Insulating Materials, this practice was withdrawn in January 2013 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

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    Withdrawn Rationale:

    This specification covers woven glass fabric coated with fully cured oleoresinous varnish, epoxy resin, polyurethane resin, or polyester resin. Excluded are coated polyester-glass fabric and glass fabric coated with silicone resins and silicone elastomers.

    Formerly under the jurisdiction of Committee D09 on Electrical and Electronic Insulating Materials, this practice was withdrawn in January 2013 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

    1. Scope

    1.1 This specification covers woven glass fabric coated with fully cured oleoresinous varnish, epoxy resin, polyurethane resin, or polyester resin. Excluded are coated polyester-glass fabric and glass fabric coated with silicone resins and silicone elastomers.

    1.2 It is recognized that several properties, notably breaking strength and dielectric strength, are related to the style of base fabric used for any particular thickness. This specification has been developed for materials using fabrics woven from relatively coarse-filament yarns and in some cases from relatively open-weave constructions, and property values are frequently somewhat lower than if finer filament yarns or closer weave constructions were used. The user is therefore alerted that significantly higher levels of performance test values may be obtained through the use of these latter types of alternate base constructions.

    1.3 The values stated in inch-pound units are to be regarded as the standard.



    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D902 Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation

    D1711 Terminology Relating to Electrical Insulation

    D1830 Test Method for Thermal Endurance of Flexible Sheet Materials Used for Electrical Insulation by the Curved Electrode Method

    D2518 Specification for Woven Glass Fabrics for Electrical Insulation

    D3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials


    Referencing This Standard

    DOI: 10.1520/D3949-99R04

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D3949-99(2004), Standard Specification for Coated Glass Fabrics Used for Electrical Insulation (Withdrawn 2013), ASTM International, West Conshohocken, PA, 1999, www.astm.org

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