Patent ID: 10190194

Abstract:
One aspect of this copper alloy for an electronic and electrical equipment contains: more than 2.0 mass % to 36.5 mass % of Zn; 0.10 mass % to 0.90 mass % of Sn; 0.15 mass % to less than 1.00 mass % of Ni; and 0.005 mass % to 0.100 mass % of P, with the balance containing Cu and inevitable impurities, wherein atomic ratios of amounts of elements satisfy 3.00<Ni/P<100.00 and 0.10<Sn/Ni<2.90, and a strength ratio TSTD/TSLD of tensile strength TSTD in a direction perpendicular to a rolling direction to tensile strength TSLD in a direction parallel to the rolling direction exceeds 1.09.