COPPER ALLOY MATERIAL FOR ELECTRICAL/ELECTRONIC PART AND PROCESS FOR PRODUCING THE SAME

摘要

A copper alloy material obtained by finish-rolling a material at a rate of work of 40% or lower, subjecting the finish-rolled material to a heat treatment with a continuous annealing furnace at a temperature of 500-800°C for 1-100 seconds, and subjecting the heat-treated material to a stress relieving treatment at a temperature of 400-600°C for 30-1,000 seconds. The copper alloy material for electrical/electronic parts underwent a dimensional change through the stress relieving treatment in the range of -0.02% to +0.02% in each of the directions parallel and perpendicular to the rolling direction.