ASTM WK46295

    Revision of A291 / A291M - 05(2010) Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears

    (What is a Work Item?)

    Active Standard: A291 / A291M - 05(2010)

    Developed by Subcommittee: A01.06 | Committee A01 | Contact Staff Manager



    WK46295

    1. Rationale

    Cooling from both tempering and stress relieving is required to be done at a rate no faster than 100 F per hour. Since the minimum tempering and stress relieving temperatures called out are above 1000 F, cooling slowly from these operations can result in embrittlement of some materials. To avoid this embrittlement rapid air or liquid cooling is typically employed. It is proposed that the cooling rate requirement for tempering and stress releiving be removed to allow manufacturers the ability to choose a cooling method best suited for the material chosen by the purchaser.


    Keywords

    alloy steel forgings; carbon steel forgings; gear forgings; gear shaft forgings; heat-treated; pinion forgings; Alloy steel forgings--specifications; Carbon steel forgings--specifications; Gears; Pinions; Reduction gears--specifications; Shafts; Steel gears;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    05-29-2014

    Technical Contact:
    Patrick Nowak

    Status:
    Draft Under Development