Standard Practices for
Production and Preparation of Gray Iron Castings for
This standard is issued under the fixed designation C 660; 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.
click below Astm C 660 – 81 (Reapproved 1999) pdf free download