ASTM A991/A991M-98

    Historical Standard: ASTM A991/A991M-98 Standard Test Method for Conducting Temperature Uniformity Surveys of Furnaces Used to Heat Treat Steel Products

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    ASTM A991 / A991M

    1. Scope

    1.1 This test method covers the procedures used to conduct a temperature uniformity survey on a furnace used to heat treat steel products. This method is used to determine the capability of the furnace to meet the permissible temperature variation specified in the applicable product specification, or as agreed to by the purchaser and supplier of heat treat services. Survey documentation requirements, and the procedure used to subsequently establish the furnace working zone, are defined in this test method.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    SAE Standard

    AMS2750 Pyrometry

    ASTM Standards

    E207 Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelement of Similar EMF-Temperature Properties

    E220 Test Method for Calibration of Thermocouples By Comparison Techniques

    E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

    E608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples


    ICS Code

    ICS Number Code 25.200 (Heat treatment)

    UNSPSC Code

    UNSPSC Code 23281603(Heat treating age hardening furnace )


    DOI: 10.1520/A0991_A0991M-98

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