ASTM D2639 / D2639M - 19

    Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer

    Active Standard ASTM D2639 / D2639M | Developed by Subcommittee: D05.15

    Book of Standards Volume: 05.06


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    Significance and Use

    5.1 Reliable values of the plastic properties of coals are used to predict or explain the behavior of a coal or blends during carbonization or in other processes such as gasification, liquefaction, and combustion.

    1. Scope

    1.1 This test method covers a relative measure of the plastic behavior of coal when heated under prescribed conditions. This test method may be used to obtain semiquantitative values of the plastic properties of coals and blends used in carbonization and in other situations where determination of plastic behavior of coals is of practical importance.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

    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

    D2013/D2013M Practice for Preparing Coal Samples for Analysis

    D2234/D2234M Practice for Collection of a Gross Sample of Coal


    ICS Code

    ICS Number Code 75.160.10 (Solid fuels)

    UNSPSC Code

    UNSPSC Code


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

    DOI: 10.1520/D2639_D2639M-19

    Citation Format

    ASTM D2639 / D2639M-19, Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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