ASTM A597 / A597M - 14(2020)

    Standard Specification for Cast Tool Steel

    Active Standard ASTM A597 / A597M | Developed by Subcommittee: A01.29

    Book of Standards Volume: 01.05


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    Abstract

    This specification covers tool steel compositions appropriate for usable shapes cast by pouring directly into suitable molds and for master heats for remelting and casting. Grades of the tool steel covered in this specification include air- and oil-hardening grades such as CA-2, CD-2, CD-5, CM-2, CS-5, CS-7, CH-12, CH-13, and CO-1. The steel shall be made by one or more of the following processes: electric-arc furnace or induction furnace and may be argon-oxygen decarburization refined. Each of the steel shall undergo chemical analysis and shall conform to the chemical composition specification for carbon, manganese, silicon, sulfur, phosphorus, chromium, molybdenum, vanadium, cobalt, tungsten, and nickel. Material shall be packed and marked with heat or lot number, specification number, steel type, and form to ensure safe delivery and proper identification.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers tool steel castings having chemical compositions similar to those of the standard wrought grades.

    1.2 Several grades are covered and are designated by chemical composition shown in Table 1.

     

     

    Composition, %

     

     

    Grade

    CS-7

    CH-12

    CH-13

    CD-51

     

    Element

    UNS

    T91907

     

     

     

     

    Carbon

     

    0.45–0.55

    0.30–0.40

    0.30–0.42

    0.85–1.00

    Manganese

     

    0.40–0.80

    0.75 max

    0.75 max

    1.00–1.30

     

    Silicon

     

    0.60–1.00

    1.50 max

    1.50 max

    1.50 max

     

    Sulfur

     

    0.03 max

    0.03 max

    0.03 max

    0.03 max

     

    Phosphorus

     

    0.03 max

    0.03 max

    0.03 max

    0.03 max

     

    Chromium

     

    3.00–3.50

    4.75–5.75

    4.75–5.75

    0.40–1.00

     

    Molybdenum

     

    1.20–1.60

    1.25–1.75

    1.25–1.75

    ...

     

    Vanadium

     

    ...

    0.20–0.50

    0.75–1.20

    0.30 max

     

    Cobalt

     

    ...

    ...

    ...

    ...

     

    Tungsten

     

    ...

    1.00–1.70

    ...

    0.40–0.60

     

    Nickel

     

    ...

    ...

    ...

    ...

     

    1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Inch-pound units are applicable to material ordered to Specification A597 and SI units for material ordered to A597M.

    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

    A781/A781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use

    A957/A957M Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use


    ICS Code

    ICS Number Code 77.140.80 (Iron and steel castings)

    UNSPSC Code

    UNSPSC Code 31100000(Castings and casting assemblies)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/A0597_A0597M-14R20

    Citation Format

    ASTM A597 / A597M-14(2020), Standard Specification for Cast Tool Steel, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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