Dezincification of a-brass can be minimized
by adding 1% Sn, as in admiralty brass (71Cu-
28Zn-1Sn, UNS C44400) and naval brass
(60Cu-39Zn-1Sn, UNS C46400), and further
inhibited by adding less than 0.1% of arsenic
(Ref 20), antimony, or phosphorus. Uniform
dealloying in admiralty brass is shown in Fig.