ASTM A20/A20M-11

    Historical Standard: ASTM A20/A20M-11 Standard Specification for General Requirements for Steel Plates for Pressure Vessels

    SUPERSEDED (see Active link, below)


    Buy Standard (PDF)
    33 pages
    $72.00

    Active (view current version of standard)

    Translated Standard: Russian
    more info


    ASTM A20 / A20M

    1. Scope

    1.1 This general requirements specification covers a group of common requirements that, unless otherwise specified in the applicable product specification, apply to rolled steel plates for pressure vessels covered by each of the following product specifications issued by ASTM:

    Title of SpecificationASTM DesignationA
    Pressure Vessel Plates, Alloy Steel, Nickel A203/A203M
    Pressure Vessel Plates, Alloy Steel, MolybdenumA204/A204M
    Pressure Vessel Plates, Alloy Steel, Manganese-
    Vanadium
    A225/A225M
    Pressure Vessel Plates, Carbon Steel, Low- and
    Intermediate-Tensile Strength
    A285/A285M
    Pressure Vessel Plates, Carbon Steel, Manganese-Silicon A299/A299M
    Pressure Vessel Plates, Alloy Steel, Manganese-
    Molybdenum and Manganese-Molybdenum-Nickel
    A302/A302M
    Pressure Vessel Plates, Alloy Steel, 9 Percent Nickel
    Double-Normalized and Tempered
    A353/A353M
    Pressure Vessel Plates, Alloy Steel, Chromium-
    Molybdenum
    A387/A387M
    Pressure Vessel Plates, Carbon Steel, High Strength
    Manganese
    A455/A455M
    Pressure Vessel Plates, Carbon Steel, for Intermediate-
    and Higher-Temperature Service
    A515/A515M
    Pressure Vessel Plates, Carbon Steel, Moderate- and
    Lower-Temperature Service
    A516/A516M
    Pressure Vessel Plates, Alloy Steel, High-Strength,
    Quenched and Tempered
    A517/A517M
    Pressure Vessel Plates, Alloy Steel, Quenched and
    Tempered Manganese-Molybdenum and Manganese-
    Molybdenum- Nickel
    A533/A533M
    Pressure Vessel Plates, Heat-Treated, Carbon-
    Manganese-Silicon Steel
    A537/A537M
    Pressure Vessel Plates, Alloy Steel, Quenched and
    Tempered Chromium-Molybdenum
    A542/A542M
    Pressure Vessel Plates, Alloy Steel, Quenched and
    Tempered Nickel-Chromium-Molybdenum
    A543/A543M
    Pressure Vessel Plates, Alloy Steel, Quenched and
    Tempered 8 and 9 Percent Nickel
    A553/A553M
    Title of SpecificationASTM DesignationA
    Pressure Vessel Plates, Carbon Steel, Manganese-
    Titanium for Glass or Diffused Metallic Coatings
    A562/A562M
    Pressure Vessel Plates, Carbon Steel, High Strength, for
    Moderate and Lower Temperature Service
    A612/A612M
    Pressure Vessel Plates, Five Percent Nickel Alloy Steel,
    Specially Heat Treated
    A645/A645M
    Pressure Vessel Plates, Carbon-Manganese, for
    Moderate and Lower Temperature Service
    A662/A662M
    Pressure Vessel Plates, Carbon Steel, Quenched and
    Tempered, for Welded Layered Pressure Vessels
    A724/A724M
    Pressure Vessel Plates, Alloy Steel and High-Strength
    Low-Alloy Steel, Quenched and Tempered
    A734/A734M
    Pressure Vessel Plates, Low-Carbon Manganese-
    Molybdenum-Columbium Alloy Steel, for Moderate and
    Lower Temperature Service
    A735/A735M
    Pressure Vessel Plates, Low-Carbon Age-Hardening
    Nickel-Copper-Chromium-Molybdenum-Columbium
    Alloy Steel
    A736/A736M
    Pressure Vessel Plates, High-Strength Low-Alloy Steel A737/A737M
    Pressure Vessel Plates, Heat-Treated, Carbon-
    Manganese-Silicon Steel, for Moderate and Lower
    Temperature Service
    A738/A738M
    Pressure Vessel Plates, Alloy Steel, Chromium-
    Molybdenum-Vanadium
    A832/A832M
    Pressure Vessel Plates, Produced by the Thermo-
    Mechanical Control Process (TMCP)
    A841/A841M
    Pressure Vessel Plates, 9 % Nickel Alloy, Produced
    by the Direct-Quenching Process
    A844/A844M
    Pressure Vessel Plates, 9 % Nickel Alloy, Produced
    by the Direct-Quenching Process
    A844/A844M
    Pressure Vessel Plates, 9 % Nickel Alloy, Produced
    by the Direct-Quenching Process
    A844/A844M
    Pressure Vessel Plates, Alloy Steel, Chromium-
    Molybdenum-Tungsten
    A1017/A1017M
    Pressure Vessel Plates, Alloy Steel, Higher Strength
    Chromium-Molybdenum-Tungsten
    A1041/A1041M

    A These designations refer to the latest issue of the respective specification which appears in the Annual Book of ASTM Standards, Vol 01.04.

    1.1.1 This general requirements specification also covers a group of supplementary requirements that are applicable to several of the above product specifications as indicated therein. Such requirements are provided for use if additional testing or additional restrictions are required by the purchaser, and apply only if specified individually in the purchase order.

    1.2 Appendix X1 provides information on coil as a source of plates for pressure vessels.

    1.3 Appendix X2 provides information on the variability of tensile properties in plates for pressure vessels.

    1.4 Appendix X3 provides information on the variability of Charpy-V-Notch impact test properties in plates for pressure vessels.

    1.5 Appendix X4 provides information on cold bending of plates, including suggested minimum inside radii for cold bending.

    1.6 These materials are intended to be suitable for fusion welding. When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.

    1.7 In case of any conflict in requirements, the requirements of the applicable product specification prevail over those of this general requirements specification.

    1.8 Additional requirements that are specified in the purchase order and accepted by the supplier are permitted, provided that such requirements do not negate any of the requirements of this general requirements specification or the applicable product specification.

    1.9 For purposes of determining conformance with this general requirements specification and the applicable product specification, values are to be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E29.

    1.10 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.11 This general requirements specification and the applicable product specification are expressed in both inch-pound units and SI units; unless the order specifies the applicable M specification designation (SI units), the plates are to be furnished to inch-pound units.


    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

    A203/A203M Specification for Pressure Vessel Plates, Alloy Steel, Nickel

    A204/A204M Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum

    A225/A225M Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Vanadium-Nickel

    A285/A285M Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength

    A299/A299M Specification for Pressure Vessel Plates, Carbon Steel, Manganese-Silicon

    A302/A302M Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel

    A353/A353M Specification for Pressure Vessel Plates, Alloy Steel, Double-Normalized and Tempered 9 % Nickel

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A387/A387M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

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

    A455/A455M Specification for Pressure Vessel Plates, Carbon Steel, High-Strength Manganese

    A515/A515M Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service

    A516/A516M Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service

    A517/A517M Specification for Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched and Tempered

    A533/A533M Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered, Manganese-Molybdenum and Manganese-Molybdenum-Nickel

    A537/A537M Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel

    A542/A542M Specification for Pressure Vessel Plates, Alloy Steel, Quenched-and-Tempered, Chromium-Molybdenum, and Chromium-Molybdenum-Vanadium

    A543/A543M Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered Nickel-Chromium-Molybdenum

    A553/A553M Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered 8 and 9 % Nickel

    A562/A562M Specification for Pressure Vessel Plates, Carbon Steel, Manganese-Titanium for Glass or Diffused Metallic Coatings

    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

    A612/A612M Specification for Pressure Vessel Plates, Carbon Steel, High Strength, for Moderate and Lower Temperature Service

    A645/A645M Specification for Pressure Vessel Plates, 5 % and 51 2 % Nickel Alloy Steels, Specially Heat Treated

    A662/A662M Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service

    A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment

    A724/A724M Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, Quenched and Tempered, for Welded Pressure Vessels

    A734/A734M Specification for Pressure Vessel Plates, Alloy Steel and High-Strength Low-Alloy Steel, Quenched-and-Tempered

    A735/A735M Specification for Pressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate and Lower Temperature Service

    A736/A736M Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Steel

    A737/A737M Specification for Pressure Vessel Plates, High-Strength, Low-Alloy Steel

    A738/A738M Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    A770/A770M Specification for Through-Thickness Tension Testing of Steel Plates for Special Applications

    A832/A832M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum-Vanadium

    A841/A841M Specification for Steel Plates for Pressure Vessels, Produced by Thermo-Mechanical Control Process (TMCP)

    A844/A844M Specification for Steel Plates, 9 % Nickel Alloy, for Pressure Vessels, Produced by the Direct-Quenching Process

    A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys

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

    A1041/A1041M Specification for Pressure Vessel Plates, Alloy Steel, Higher Strength Chromium-Molybdenum-Tungsten

    E21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E112 Test Methods for Determining Average Grain Size

    E208 Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels

    E709 Guide for Magnetic Particle Testing

    American Society of Mechanical Engineers Code

    ASME Boiler and Section IX, Welding, Brazing, and Fusing Qualifications

    U.S. Federal Standard

    Fed. Std. No.  Marking for Shipment (Civil Agencies)

    Automotive Industry Action Group Standard

    B 1 Bar Code Symbology Standard


    ICS Code

    ICS Number Code 23.020.30 (Pressure vessels, gas cylinders); 77.140.50 (Flat steel products and semi-products)

    UNSPSC Code

    UNSPSC Code 30102204(Steel plate)


    DOI: 10.1520/A0020_A0020M-11

    ASTM International is a member of CrossRef.


    Citing ASTM Standards
    Back to Top