The alloy CuZn28 is a brass, which has a homogeneous alpha faces centered cubic single phase, solid solution of Zn in copper. The alpha phase is very ductile at low temperature. CuZn28 (PAM) has an interesting compromise of relatively high tensile strength and hardness with an excellent cold deformability. Amongst the Cu and Zn alloys, there are other brasses having higher amount of Zn, a higher tensile strength and hardness but consequently a reduced cold deformability. Lamineries MATTHEY SA produces also the CuZn37 for example.

Typical uses
The CuZn28 is used in many different applications, like needles, dials, etc. for the watch industry; chemical etching, eyelets, rivets, caps, deep drawing parts, etc.