COPPER ALLOY AND COPPER ALLOY PLASTIC PROCESSING MATERIAL

Title:

COPPER ALLOY AND COPPER ALLOY PLASTIC PROCESSING MATERIAL

Document Type and Number:

Japanese Patent JP2013104101

Kind Code:

A

Abstract:

To provide a copper alloy which is high in rigidity and has excellent processability, and a copper alloy plastic processing material composed of the copper alloy.

The copper alloy contains Mg in a range of 3.3 atom% or higher and 6.9 atom% or lower, its remaining part is substantially composed of Cu and inevitable impurities, an oxygen amount is 500 atom ppm or lower, and when a content of Mg is set to be X atom%, conductivity σ (%IACS) is set within a range of σ≤1.7241/(-0.0347×X²+0.6569×X+1.7)×100. Also in scanning electron microscope observation, an average number of inter-metal compounds with Cu and Mg which are not smaller than 0.1 μm in particle diameter as main components is set not to be larger than 1 piece/μm². Furthermore, the copper alloy may contain at least one kind or two or more kinds of Al, Ni, Si, Mn, Li, Ti, Fe, Co, Cr and Zr within a range of 0.01 atom% or higher and 3.0 atom% or lower in total.