ASTM D4708 - 12

    Standard Practice for Preparation of Uniform Free Films of Organic Coatings

    Active Standard ASTM D4708 | Developed by Subcommittee: D01.23

    Book of Standards Volume: 06.01


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    ASTM D4708

    Significance and Use

    4.1 Free films are required for conducting tests to evaluate physical and mechanical properties such as tensile and elongation (Test Methods D2370 and E96/E96M), moisture vapor permeability (Test Methods D1653), and other physical properties of organic coatings where the substrate may interfere with the determination.

    1. Scope

    1.1 This practice covers the preparation of free films of organic coatings for use in determining the physical properties of the coatings. Procedures are given for preparing free films on three alternative substrates. These substrates are treated FEP (fluorinated ethylene-propylene) sheet, silicone coated paper, and halosilane coated glass plates.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

    1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.


    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

    D823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels

    D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers

    D1653 Test Methods for Water Vapor Transmission of Organic Coating Films

    D2370 Test Method for Tensile Properties of Organic Coatings

    E96/E96M Test Methods for Water Vapor Transmission of Materials


    ICS Code

    ICS Number Code 25.220.60 (Organic coatings)

    UNSPSC Code

    UNSPSC Code 46181533(Protective coats)


    DOI: 10.1520/D4708-12

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