ASTM A387/A387M-99

    Historical Standard: ASTM A387/A387M-99 Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

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    ASTM A387 / A387M

    1. Scope

    1.1 This specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.

    1.2 Plates are available under this specification in several grades having different alloy contents as follows:

    NominalNominal
    ChromiumMolybdenum
    Grade Content, %Content, %
    20.500.50
    121.000.50
    111.250.50
    22, 22L2.251.00
    21, 21L3.001.00
    55.000.50
    99.001.00
    919.001.00
    911 9.001.00

    1.3 Each grade except Grades 21L, 22L, 91 and 911 is available in two classes of tensile strength levels as defined in the Tensile Requirements tables, depending on heat treatment. In the annealed condition all grades are available only as Class 1. Grades 21L and 22L are available only as Class 1. Grade 91 and 911 are available only as Class 2.

    1.4 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.

    1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.


    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

    A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates

    A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates

    A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications

    A1017/A1017M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum-Tungsten


    UNSPSC Code

    UNSPSC Code 30102204(Steel plate)


    DOI: 10.1520/A0387_A0387M-99

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