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

For rolled or cold-finished bars and rods refer to Specification B 211M, for drawn tube, Specification B 210M, for structural pipe and tube, Specification B 429M, and for seamless pipe and tube, Specification B 241/B 241M.

1.2 Alloy and temper designations are in accordance with ANSI H35.1M. The equivalent Unified Numbering System alloy designations are those of 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 .

1.4 This specification is the metric counterpart of Specification B 221.

1.5 The values stated in SI are to be regarded as standard. No other units of measurement are included in this specification.