Patent ID: 9702027
Date: 2017-07-11
CPC Classifications: A01K,C22C,Y02A

Claim:
1. A copper alloy consisting of, in wt. %: 51.8 to 84.0% Cu 15.5 to 36.0% Zn, 0.35 to 3.0% Sn, 0.12 to 1.5% Fe, up to 1.0% P, optionally 0.1 to 2.0% Al optionally 0.1 to 1.0% Mn and 0.1 to 1.0% Co optionally 0.01 to 1.0% As and 0.1 to 1.0% Sb and unavoidable impurities, wherein the microstructure comprises more than 95 vol. % of α-phase crystals, in which at least iron phosphides and/or iron are intercalated as precipitation particles, the ratio of P/Fe is [P]/[Fe]>0.25 and the alloy has a matrix with a mean grain size of less than 20 μm.