ASTM D2663 - 14(2019)

    Standard Test Methods for Carbon Black—Dispersion in Rubber

    Active Standard ASTM D2663 | Developed by Subcommittee: D24.71

    Book of Standards Volume: 09.01

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    Significance and Use

    5.1 Visual dispersion ratings correlate with certain important physical properties of the compound. A rating of 5 indicates a state of dispersion developing near maximum properties, while a rating of 1 would indicate a state of dispersion developing considerably depressed properties. Normally, the visual dispersion ratings indicate the following levels of compound quality:

    Visual Dispersion Rating




    4 to 5


    3 to 4


    2 to 3


    1 to 2

    Very low

    1. Scope

    1.1 These test methods cover the degree of dispersion of carbon black in rubber. Four test methods are described as follows:



      Test Method A—Visual Inspection

    3 – 11

      Test Method B—Agglomerate Count

    12 – 22

      Test Method C—Microroughness Measurement


        with Profilometer

    23 – 33

      Test Method D—Microroughness Measurement with IFM

    34 – 42

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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

    1.4 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

    D3182 Practice for RubberMaterials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets

    D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries

    ICS Code

    ICS Number Code 83.040.20 (Rubber compounding ingredients)

    UNSPSC Code

    UNSPSC Code 12171603(Carbon black)

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

    DOI: 10.1520/D2663-14R19

    Citation Format

    ASTM D2663-14(2019), Standard Test Methods for Carbon Black—Dispersion in Rubber, ASTM International, West Conshohocken, PA, 2019,

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