ASTM WK61926

    Revision of A320 / A320M - 17b Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service

    (What is a Work Item?)

    Active Standard: A320 / A320M - 18

    Developed by Subcommittee: A01.22 | Committee A01 | Contact Staff Manager



    additional elements; austenitic stainless steel; bolts—steel; chromium-molybdenum steel; bolting components—steel; markings on fittings; nickel-chromium-molybdenum alloy steel; pressure vessel service; stainless steel bolting; starting material; steel bars—alloy; steel bolting; steel flanges; steel valves; temperature service applications—low ;;


    It was found that stress relieving L7M bolting, within 50F of the original tempering temperature, more effectively reduces measurable work hardening in the deformed zone of roll threaded product than stress relieving at the minimum tempering temperature. Data supporting this statement was presented at the 11/17 ASTM conference. This revision will be to update the L7M post machining stress relief requirements to require that the stress relief take place within 50F of the original tempering temperature

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Brian Kingsley

    Draft Under Development