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    ASTM C417 - 21

    Standard Test Method for Thermal Conductivity of Unfired Monolithic Refractories

    Active Standard ASTM C417 | Developed by Subcommittee: C08.02

    Book of Standards Volume: 15.01


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    Significance and Use

    3.1 The thermal conductivity of monolithic refractories is a property required for selecting their thermal transmission characteristics. Users select monolithic refractories to provide specified conditions of heat loss and cold face temperature, without exceeding the temperature limitation of the monolithic refractory. This test method establishes placement of thermocouples and positioning of test specimens in the calorimeter.

    3.2 This procedure must be used with Test Method C201 and requires a large thermal gradient and steady-state conditions. The results are based upon a mean temperature.

    3.3 The data from this test method are suitable for specification acceptance, estimating heat loss and surface temperature, and the design of multi-layer refractory construction.

    3.4 The use of these data requires consideration of the actual application environment and conditions.

    1. Scope

    1.1 This test method supplements Test Method C201, and shall be used in conjunction with that test method for determining the thermal conductivity of unfired monolithic refractories.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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

    C182 Test Method for Thermal Conductivity of Insulating Firebrick

    C201 Test Method for Thermal Conductivity of Refractories

    C862 Practice for Preparing Refractory Concrete Specimens by Casting

    C1054 Practice for Pressing and Drying Refractory Plastic and Ramming Mix Specimens

    E220 Test Method for Calibration of Thermocouples By Comparison Techniques


    ICS Code

    ICS Number Code 81.080 (Refractories)

    UNSPSC Code

    UNSPSC Code 31370000(Refractories)


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

    DOI: 10.1520/C0417-21

    Citation Format

    ASTM C417-21, Standard Test Method for Thermal Conductivity of Unfired Monolithic Refractories, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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