| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper alloy good in abrasion resistance.SOLUTION: A copper alloy contains 25.0 wt.% to 48.0 wt.% of Zn, 1.0 wt.% to 7.0 wt.% of Mn, 0.5 wt.% to 3.0 wt.% of Si and Ni with the content having mass ratio to Si of 0.06 to 0.30, and of which a part of Ni constitutes a particle of a Ni-Mn-Si compound and other part of Ni is solid solved in Cu-Zn matrix. |
