ASTM F1312 - 90(2013)

    Standard Specification for Brick, Insulating, High Temperature, Fire Clay

    Active Standard ASTM F1312 | Developed by Subcommittee: F25.07

    Book of Standards Volume: 01.07

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    This specification covers thermal insulating bricks made from fire clay that are used as backup insulation for refractory furnace linings of boiler furnaces. The bricks shall be composed of heat-resistant materials that have been burned or fired to produce the desired density, strength, and structure. Representative bricks shall be tested, and shall conform accordingly to specified values of bulk density, modulus of rupture, and reheat change.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers one type of thermal insulating brick for use as backup insulation for refractory furnace linings of boiler furnaces.

    1.2 The values stated in inch-pound units are to be regarded as standard. The SI units in parentheses are for information purposes only and may be approximate.

    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

    C93 Test Method for Cold Crushing Strength and Modulus of Rupture of Insulating Firebrick

    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

    Federal Specifications

    PPP-B-601 Boxes, Wood, Cleated-Plywood


    PPP-B-636 Box, Fireboard

    Military Specification


    Military Standards

    MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes

    MIL-STD-129 Marking for Shipment and Storage


    ICS Code

    ICS Number Code 81.080 (Refractories)

    UNSPSC Code

    UNSPSC Code 31371108(Fire clay brick)

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

    DOI: 10.1520/F1312-90R13

    Citation Format

    ASTM F1312-90(2013), Standard Specification for Brick, Insulating, High Temperature, Fire Clay, ASTM International, West Conshohocken, PA, 2013,

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