ASTM A789/A789M-13a

    Historical Standard: ASTM A789/A789M-13a Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

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    ASTM A789 / A789M

    1. Scope

    1.1 This specification2 covers grades of average wall thickness, or, if specified on the order, minimum wall thickness, of stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

    1.2 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. Within the text, the SI units are shown in brackets. The inch-pound units shall apply unless the M designation of this specification is specified in the order.


    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

    A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

    A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

    SAE Standard

    SAEJ 1086 Practice for Numbering Metals and Alloys (UNS)


    ICS Code

    ICS Number Code 23.040.40 (Metal fittings)

    UNSPSC Code

    UNSPSC Code 31351209(Stainless steel welded or brazed tube assemblies); 40182400(Seamless stainless steel tubes)


    DOI: 10.1520/A0789_A0789M

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