Standard Speciﬁcation for Magnesium-Alloy Forgings1
This wellknown is issued under the ﬁxed designation b ninety one; the range immediately following the designation shows the 12 months of authentic adoption or, within the case of revision, the yr of final revision. more than a few in parentheses indicates the yr of closing reapproval. a superscript epsilon (e) shows a piece of writing alternate for the reason that final revision or reapproval.
This preferred has been authorized to be used by way of groups of the branch of protection.
click below to download Astm B91 – 97 (Reapproved 2004) pdf free
click here to download Astm B 90M – 98 pdf free