ASTM A1049/A1049M-06

    Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components

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    1. Scope

    1.1 This specification covers ferritic/austenitic (duplex) stainless steel forgings for boilers, pressure vessels, and associated equipment in grades that are also found in Specification A 182/A 182M.

    1.2 The purchaser may specify in the order or contract any appropriate supplementary requirements that are provided in Specification A 788/A 788M.

    1.3 Unless the order specifies the applicable "M" specification designation the material shall be furnished to the inch-pound units.

    1.4 The values stated in either inch-pound or SI (metric) units are to be regarded separately as standard. Within the text and tables, the SI units are shown in brackets. 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 nonconformance with the 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

    A182/A182M Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A388/A388M Practice for Ultrasonic Examination of Steel Forgings

    A745/A745M Practice for Ultrasonic Examination of Austenitic Steel Forgings

    A788/A788M Specification for Steel Forgings, General Requirements

    A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels

    E165 Practice for Liquid Penetrant Examination for General Industry

    G48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

    Other Standards

    NACEMR0175/ISO15156 Petroleum and Natural Gas IndustriesMaterials for Use in H2SContaining Environments in Oil and Gas Production Available from National Association of Corrosion Engineers (NACE), 1440 South Creek Dr., Houston, TX 77084-4906.


    ICS Code

    ICS Number Code 77.140.20 (Steels of high quality)

    UNSPSC Code

    UNSPSC Code 31132600(Stainless steel forgings)


    DOI: 10.1520/A1049_A1049M-06

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