Patent ID: 6334915
Filing Date: 2002-01-01
Classification: C22C

Abstract:
A copper alloy sheet, which consists essentially of 0.4 to 2.5 wt % of Ni, 0.05 to 0.6 wt % of Si, 0.001 to 0.05 wt % of Mg, and at least one element selected from the group consisting of 0.01 to 0.1 wt % of Mn, and 0.001 to 0.1 wt % of Cr; the balance being Cu and inevitable impurities wherein an average grain size in the sheet is in the range of 3 to 20 &mgr;m, and a size of an intermetallic compound precipitate of Ni and Si is in the range of 0.3 &mgr;m or below.