Standard Speciﬁcation for Titanium and Titanium Alloy Forgings1
This wellknown is issued underneath the ﬁxed designation b 381; the number right now following the designation indicates the year of authentic adoption or, within the case of revision, the 12 months of ultimate revision. A number of in parentheses suggests the yr of closing reapproval. A superscript epsilon (e) indicates an article trade since the remaining revision or reapproval.
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You can also get ASTM B 380 – 97 International standard