ASTM D5230 - 19

    Standard Test Method for Carbon Black—Automated Individual Pellet Hardness

    Active Standard ASTM D5230 | Developed by Subcommittee: D24.51

    Book of Standards Volume: 09.01


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    Significance and Use

    4.1 Individual pellet hardness is related to several carbon black characteristics. Among these are mass strength and attrition. The subsequent level of dispersion obtained in some mixed compounds containing the carbon black may be affected by pellet hardness. Acceptable pellet hardness must be agreed to by the user and the producer.

    1. Scope

    1.1 This test method covers a procedure for measuring individual pellet hardness of carbon black by the automated pellet hardness tester.

    1.2 The values stated in SI units are to be regarded as the standard. The values 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, 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

    D1511 Test Method for Carbon BlackPellet Size Distribution

    D1799 Practice for Carbon BlackSampling Packaged Shipments

    D1900 Practice for Carbon BlackSampling Bulk Shipments

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

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


    ICS Code

    ICS Number Code 83.040.20 (Rubber compounding ingredients)

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

    DOI: 10.1520/D5230-19

    Citation Format

    ASTM D5230-19, Standard Test Method for Carbon Black—Automated Individual Pellet Hardness, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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