ASTM D4213 - 08(2012)

    Standard Test Method for Scrub Resistance of Paints by Abrasion Weight Loss

    Active Standard ASTM D4213 | Developed by Subcommittee: D01.42

    Book of Standards Volume: 06.02


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    Significance and Use

    4.1 Interior paint films often become soiled, especially near doorways, windows, and play areas, and frequently need to be cleaned by scrubbing. This test method covers the determination of the relative resistance of paints to erosion when scrubbed.

    4.2 The precision of scrub resistance measurements in absolute physical values, such as Test Methods D2486 cycles-to-failure or this test method, microlitres per 100 cycles, is poor due to the relatively large effect of subtle and difficult-to-control variables in test conditions. The test method described herein minimizes this problem by using a standard calibration panel as an integral part of each scrubbing operation and relating its weight loss to that of the paint film under test to establish the latter's scrub resistance.

    Note 1The numerical scrub resistance values obtained by this test method are of significance only in relation to the specific calibration panel types with which the value is obtained. Thus, for example, a scrub resistance value of 83 with a Type X calibration panel would be reported as 83X.

    4.3 Results obtained by this test method do not necessarily represent the scrub resistance that might be determined if the test film is allowed to dry before testing appreciably longer than the seven-day period specified herein.

    4.4 Results obtained by this test method do not necessarily relate to ease of soil or stain removal (also referred to as “cleanability” or “cleansability”). To test for those characteristics use Test Methods D3450 and D4828.

     Alignment of Panels for Scrubbing
    FIG. 1 Alignment of Panels for Scrubbing

    1. Scope

    1.1 This test method covers an accelerated procedure for determining the resistance of paints to erosion caused by scrubbing. (Note: The term wet abrasion is sometimes used for scrubbing, and wet abrasion resistance or scrubbability for scrub resistance.) Although scrub resistance tests are intended primarily for interior coatings, they are sometimes used with exterior coatings as an additional measure of film performance.

    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

    D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer

    D1193 Specification for Reagent Water

    D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products

    D2486 Test Methods for Scrub Resistance of Wall Paints

    D3450 Test Method for Washability Properties of Interior Architectural Coatings

    D3980 Practice for Interlaboratory Testing of Paint and Related Materials

    D4828 Test Methods for Practical Washability of Organic Coatings

    E70 Test Method for pH of Aqueous Solutions With the Glass Electrode

    E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 87.040 (Paints and varnishes)

    UNSPSC Code

    UNSPSC Code 31211500(Paints and primers)


    Referencing This Standard

    DOI: 10.1520/D4213-08R12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D4213-08(2012), Standard Test Method for Scrub Resistance of Paints by Abrasion Weight Loss, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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