1.1 This specification establishes requirements for brass strip (Copper Alloy UNS Nos. C23000, C26000, and C26130 ) in widths 3 in. (76.2 mm) and under and thickness less than 0.018 in. (0.457 mm), for the manufacture of thin-walled tubes for water passages in heat exchangers for internal combustion engines and other closed-system heat sources.

1.2 The values stated in inch-pound units are the standard, except for grain size, which is always specified in millimetres. Values given in parentheses are for information only.