Astm A 638/A 638M – 00 Pdf free download - Civil engineering Education

Standard Specification for
Precipitation Hardening Iron Base Superalloy Bars,
Forgings, and Forging Stock for High-Temperature Service1

This standard is issued under the fixed designation A 638/A 638M; 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.