Patent ID: 10056166

Abstract:
Disclosed is a copper-cobalt-silicon (Cu—Co—Si) alloy for electronic material with an improved balance among electro-conductivity, strength and bend formability, which includes 0.5 to 3.0% by mass of Co, 0.1 to 1.0% by mass of Si, and the balance of Cu and inevitable impurities, having a ratio of mass percentages of Co and Si (Co/Si) given as 3.5≤Co/Si≤5.0, having an average particle size of second phase particles, within the range of the particle size of 1 to 50 m seen in a cross-section taken in parallel with the direction of rolling, of 2 to 10 nm, and having an average distance between the adjacent second phase particles of 10 to 50 nm.