ASTM A958 / A958M - 15

    Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades

    Active Standard ASTM A958 / A958M | Developed by Subcommittee: A01.18

    Book of Standards Volume: 01.02


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    Abstract

    This specification covers carbon and low-alloy steel castings. The steel specimens shall be heat treated and shall conform to the required values of austenitizing temperature and tempering temperature. The steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. Tensile tests shall be performed and the steel specimens shall conform to the required values of tensile strength, yield strength, and elongation.

    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 carbon and low-alloy steel castings having chemical analyses similar to that of the standard wrought grades.

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

    1.3 Options for tensile properties are shown in Tables 2 and 3.

    (A) “X” denotes that the properties may be achieved by at least one of the heat treatments referenced in 5. The effect of section thickness should be considered in making grade selections. The heat treatment requirements do not imply that all section thicknesses will be through hardened.
    (B) These grades significantly exceed the minimum strength levels; therefore, they may be unsuitable for use due to weldability, and machinability issues.

    1.4 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.

    1.4.1 Within the text, the SI units are shown in brackets.


    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

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel

    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

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications


    ICS Code

    ICS Number Code 77.100 (Ferroalloys)

    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/A0958_A0958M-15

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM A958 / A958M-15, Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades, ASTM International, West Conshohocken, PA, 2015, www.astm.org

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