Standard Specification for
Precipitation Hardening Cobalt-Containing Alloys (UNS
R30155 and UNS R30816) Rod, Bar, Forgings, and Forging
Stock for High-Temperature Service1

This standard is issued under the fixed designation B 639; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

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