ASTM C155 - 97(2013)

    Standard Classification of Insulating Firebrick

    Active Standard ASTM C155 | Developed by Subcommittee: C08.92

    Book of Standards Volume: 15.01


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    Significance and Use

    3.1 This classification establishes an orderly grouping of insulating firebrick to provide group identifications for use by those producing or purchasing these materials. The group identification number is not meant to specifically designate the maximum service temperature although the number times 100 does approximate the temperature (in degrees Fahrenheit) to be used to check the reheat change and can be used as a guide for relative temperature stability. The bulk density limits the weight per unit volume for any group as sold, but is not meant to be used for detailed engineering calculations.

    1. Scope

    1.1 This classification covers heat insulating material known as insulating firebrick. This material is suitable for lining certain kinds of industrial furnaces.

    Note 1Insulating materials for use below 1000°F (538°C) are covered2 by ASTM Committee C-16 on Thermal Insulation.


    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

    C134 Test Methods for Size, Dimensional Measurements, and Bulk Density of Refractory Brick and Insulating Firebrick

    C210 Test Method for Reheat Change of Insulating Firebrick


    ICS Code

    ICS Number Code 81.080 (Refractories)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/C0155

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C155-97(2013), Standard Classification of Insulating Firebrick, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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