| 摘要 |
Provided is a copper alloy sheet excellent in strengths, electroconductivity, and bending workability. The copper alloy contains Cr of 0.10% to 0.50%, Ti of 0.010% to 0.30%, and Si of 0.01% to 0.10%, where a ratio (in mass) of the Cr content to the Ti content is from 1.0 to 30, a ratio (in mass) of the Cr content to the Si content is from 3.0 to 30, with the remainder including copper and inevitable impurities. The copper alloy includes grains that have an average major axis length of 6.0 μm or less and an average minor axis length of 1.0 μm or less as measured on a microstructure of the copper alloy in a plane surface perpendicular to a transverse direction by FESEM-EBSP analysis. |
