ASTM A961/A961M-12a

    Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

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    1. Scope

    1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications:

    Title of Specification

    ASTM Designation



    Forgings, Carbon Steel, for Piping Components


    Forgings, Carbon Steel, for General-Purpose Piping


    Forged or Rolled Alloy-Steel Pipe Flanges, Forged


      Fittings, and Valves and Parts for High Temperature


    Forgings, Carbon and Low Alloy Steel, Requiring Notch


      Toughness Testing for Piping Components


    Forged or Rolled 8 and 9 % Nickel Alloy


      Steel Flanges, Fittings, Valves, and Parts


      for Low-Temperature Service


    Forgings, Carbon and Alloy Steel, for Pipe Flanges,


      Fittings, Valves, and Parts for High-Pressure
      Transmission Service


    Flanges, Forged, Carbon and Alloy Steel for Low


      Temperature Service


    Forgings, Carbon Steel, for Piping Components with


      Inherent Notch Toughness


    Forgings, Titanium-Stabilized Carbon Steel, for


      Glass-Lined Piping and Pressure Vessel Service


    1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general requirement specification, the requirements of the individual product specification shall prevail over those of this specification.

    1.3 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (see Section 4.1.2). The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order as agreed upon between the purchaser and supplier.

    1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text and the 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 non-conformance with the standard. The inch-pound units shall apply, unless the “M” designation (SI) of the product 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

    A105/A105M Specification for Carbon Steel Forgings for Piping Applications

    A181/A181M Specification for Carbon Steel Forgings, for General-Purpose Piping

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

    A275/A275M Practice for Magnetic Particle Examination of Steel Forgings

    A350/A350M Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A522/A522M Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service

    A694/A694M Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service

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

    A707/A707M Specification for Forged Carbon and Alloy Steel Flanges for Low-Temperature Service

    A727/A727M Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness

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

    A836/A836M Specification for Titanium-Stabilized Carbon Steel Forgings for Glass-Lined Piping and Pressure Vessel Service

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

    A967 Specification for Chemical Passivation Treatments for Stainless Steel Parts

    A991/A991M Test Method for Conducting Temperature Uniformity Surveys of Furnaces Used to Heat Treat Steel Products

    A1058 Test Methods for Mechanical Testing of Steel Products--Metric

    B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys

    E165 Practice for Liquid Penetrant Examination for General Industry

    E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

    E709 Guide for Magnetic Particle Testing

    E1916 Guide for Identification of Mixed Lots of Metals

    ASME Standard

    ASME Boiler and Pressure Vessel Code-Section IX

    Manufacturers Standardization Society Standard

    SP 25 Standard Marking System of Valves, Fittings, Flanges and Unions

    ICS Code

    ICS Number Code 23.040.01 (Pipeline components in general. Pipelines); 77.140.20 (Steels of high quality)

    UNSPSC Code

    UNSPSC Code 40170000(Pipe piping and pipe fittings)

    DOI: 10.1520/A0961_A0961M-12A

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