Patent ID: 9617629
Date: 2017-04-11
CPC Classifications: B21C,B21K,B22D,C21D,C22C,C22F

Claim:
1. A copper-nickel-zinc alloy having the following composition, in % by weight: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, remainder Zn and unavoidable impurities, wherein a sum total of the Fe content and twice the Co content is at least 0.1%, mixed silicides containing nickel, iron and manganese and/or mixed silicides containing nickel, cobalt and manganese are incorporated as spherical or ellipsoidal particles in a microstructure consisting of α and β phase and an areal density of the silicides having a particle diameter of at most 1 μm is at least 20 per 100 μm 2 .