Standard Specification for
Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire,
Profiles, and Tubes [Metric]1
This wellknown is issued under the fixed designation b 221m; the number at once following the designation suggests the year of
authentic adoption or, inside the case of revision, the 12 months of remaining revision. quite a number in parentheses indicates the yr of last reapproval. a
superscript epsilon (e) suggests an editorial exchange since the ultimate revision or reapproval.
This wellknown has been permitted to be used with the aid of businesses of the branch of defense.
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