scope:

1.1 This specification covers aluminum and aluminum-alloy extruded bar, rod, wire, profile, and tube in the aluminum alloys (Note 1) and tempers shown in Table 2.

Note 1-Throughout this specification, the use of the term alloy in the general sense includes aluminum as well as aluminum alloy.

Note 2-lFor rolled or cold-finished bar and rod refer to Specification B 211, for drawn tube to Specification B 210, for structural pipe and tube to Specification B 429, and for seamless pipe and tube to Specification B 241/B 241M.

1.2 Alloy and temper designations are in accordance with ANSI H35.1. The equivalent Unified Numbering System alloy designations are those of Table 1 preceded by A9; for example, A91100 for Aluminum 1100 in accordance with Practice E 527.

1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.

1.4 A complete metric companion to B 221 has been developed-B 221M; therefore, no metric equivalents are presented in this specification.