ASTM A203 / A203M - 12

    Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel

    Active Standard ASTM A203 / A203M | Developed by Subcommittee: A01.11

    Book of Standards Volume: 01.04


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    Abstract

    This specification covers nickel-alloy steel plates intended primarily for welded pressure vessels. As a steel making practice, the steel shall be killed and shall conform to fine grain size requirements. The heat treatment requirements for all plates are presented, and all plates under Grades A, B, D, and E shall be normalized as required. The steel shall conform to the required chemical compositions. Two mechanical test requirements are presented that includes, tension test requirements and impact test requirements.

    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 nickel-alloy steel plates intended primarily for welded pressure vessels.

    1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows:

    GradeNominal Nickel
    Content %
    Yield Strength, min, ksi [MPa]Tensile Strength, min, ksi [MPa]
    A2.2537 [255]65 [450]
    B2.2540 [275]70 [485]
    D3.5037 [255]65 [450]
    E3.5040 [275]70 [485]
    F3.50
    2 in. [50 mm] and under 55 [380] 80 [550] cccc
    Over 2 in. [50 mm] 50 [345] 75 [515]

    1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements. However, current practice normally limits the maximum thickness of plates furnished under this specification as follows:

    Grade Maximum Thickness, in. [mm]
    A6 [150]
    B6 [150]
    D4 [100]
    E4 [100]
    F4 [100]

    1.4 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

    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


    ICS Code

    ICS Number Code 77.140.30 (Steels for pressure purposes); 77.140.50 (Flat steel products and semi-products)

    UNSPSC Code

    UNSPSC Code 30102204(Steel plate)


    Referencing This Standard

    DOI: 10.1520/A0203_A0203M-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM A203 / A203M-12, Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel , ASTM International, West Conshohocken, PA, 2012, www.astm.org

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