ASTM B1011 / B1011M - 19

    Standard Specification for Cobalt Alloy Spring Wire

    Active Standard ASTM B1011 / B1011M | Developed by Subcommittee: B02.07

    Book of Standards Volume: 02.04


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    1. Scope

    1.1 This specification covers cold-drawn cobalt alloy spring wire intended especially for the manufacture of springs.

    1.1.1 This specification requires capability properties after age hardening test samples of the cold worked spring wire to ensure final mechanical properties are satisfied. The spring is typically age hardened after fabrication to increase its strength. However, mechanical properties cannot be obtained from finished springs.

    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.

    1.3 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.

    1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    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

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

    E8 Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

    E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys

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

    SAE Standard

    J1086 Numbering Metals and Alloys

    NACE International Standard

    NACE MR0175/ISO 15156 Petroleum and natural gas industriesMaterials for use in H2S-containing environments in oil and gas production


    Referencing This Standard
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    DOI: 10.1520/B1011_B1011M-19

    Citation Format

    ASTM B1011 / B1011M-19, Standard Specification for Cobalt Alloy Spring Wire, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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