Standard Specification for
Grade 80 Alloy Steel Chain1
This wellknown is issued underneath the fixed designation a 391/a 391m; the wide variety straight away following the designation shows the yr
of original adoption or, within the case of revision, the yr of ultimate revision. more than a few in parentheses suggests the year of last reapproval.
a superscript epsilon (e) indicates an editorial trade because the last revision or reapproval.
click below to download Astm A 391M – 01 pdf free
click here to download Astm A 390 – 95 (Reapproved 2001) pdf free