Copper based alloy sheet material for electrical and electronic parts, having the effect of restraining wear of blanking die.

摘要

A copper based alloy sheet material having an effect of restraining wear of a blanking die used to blank the same, which would occur during the blanking step, consists essentially of: Ni: 0.5 - 3%, Si: 0.08 - 0.8%, Zn: 0.1 - 3%, Sn: 0.1 - 0.9%, Mg: 0.001 - 0.2%, Mo: 0.0002 - 0.03%, and Cu and inevitable impurities: the balance. n