| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a copper-based deposited alloy board for contact material capable of improving the operability of a multifunctional switch used for electronic equipment or the like. <P>SOLUTION: A copper-based deposited alloy board for contact material having differences between three tensile strengths, namely, the tensile strength along the rolling direction, the tensile strength along the direction sloping with an angle of 45°C from the rolling direction and the tensile strength along the direction sloping with an angle of 90°C from the rolling direction, the maximum of the differences being 100 MPa or less. The copper-based deposited alloy board comprises, by mass, 2 to 4% Ni and 0.4 to 1% Si, and, if required, further comprises at least one selected from the group consisting of Mg, Sn, Zn and Cr by suitable quantity, and the balance copper with inevitable impurities. Further, the copper-based deposited alloy board for contact material, can be produced by applying aging heat treatment to a copper alloy board which has been solution heat-treated, and then applying cold rolling thereto at a draft of≤30%. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
