Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings1
This popular is issued beneath the ﬁxed designation a 247; the wide variety without delay following the designation shows the yr of authentic adoption or, inside the case of revision, the year of remaining revision. quite a number in parentheses shows the yr of last reapproval. a superscript epsilon (e) shows an article trade since the last revision or reapproval.
This standard has been accredited for use by means of businesses of the branch of protection.
click below to download Astm A 247 – 67 (Reapproved 1998) pdf free
click here to download Astm A 242M – 04 pdf free