Standard Test Method for
Evaluating the Microstructure of Graphite in Iron Castings1
This standard is issued under the fixed designation A 247; 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 to download Astm A 247 – 67 (Reapproved 1998) pdf free
click here to download Astm A 242/A 242M – 04 Pdf Free Download