ASTM D823 - 18

    Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels

    Active Standard ASTM D823 | Developed by Subcommittee: D01.23

    Book of Standards Volume: 06.01


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    Significance and Use

    4.1 This practice should be used for those coatings that are designed for spray applications of objects in the factory or in the field. It is particularly important that it be used in the evaluation of metallic coatings for appearance properties, such as gloss and color.

    4.2 Coatings applied by this test method may exhibit a slight orange-peel or spray wave.

    1. Scope

    1.1 Five practices are given for preparing films of uniform thickness of coatings on test panels. These practices are:
    Practice A—Automated Spray Machine Application
    Practice B—Motor-Driven Dip Coater Application
    Practice C—Motor-Driven Blade Film Application
    Practice D—Hand-Held Spray Gun Application
    Practice E—Hand-Held Blade Film Application

    1.2 The use of wire-wound drawdown bars as described in Practice D4147 may also be an appropriate method for producing films of uniform coating thickness.

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

    1.4 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.

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

    ASTM Standards

    D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products

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

    D1212 Test Methods for Measurement of Wet Film Thickness of Organic Coatings

    D3924 Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials

    D4147 Practice for Applying Coil Coatings Using Wire-Wound Drawdown Bars

    D4285 Test Method for Indicating Oil or Water in Compressed Air

    D4414 Practice for Measurement of Wet Film Thickness by Notch Gages

    D7091 Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals


    ICS Code

    ICS Number Code 87.040 (Paints and varnishes)

    UNSPSC Code

    UNSPSC Code 31210000(Paints and primers and finishes)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D0823-18

    Citation Format

    ASTM D823-18, Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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