| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper alloy excellent in both of strength and conductivity, specifically, having tensile strength exceeding 900N/mm<SP>2</SP>and the conductivity of 20%IACS or more, and a method for producing the same. SOLUTION: The copper alloy contains Ni of 3.3 mass% or more and 8.4 mass% or less, and Si of 0.6 mass% or more and 2.1 mass% or less, and the remainder is constituted of Cu and inevitable impurities, mass ratio (Ni/Si) of Ni and Si is 4.0 or more and 5.5 or less, and the size of an inclusion to be deposited in the copper alloy is 10 μm or less. COPYRIGHT: (C)2011,JPO&INPIT |
