View Historical Standards for A638/A638M:

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Document Designation and Title Year Select Item(s) A638/A638M Standard Specification for Precipitation Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service 00(2004) A638/A638M Standard Specification for Precipitation Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service 00