| 摘要 |
A copper alloy material for electric/electronic parts, which is produced by the steps containing: finish rolling a copper alloy at a reduction ratio of 40% or less, subjecting the copper alloy finish-rolled to a heat treatment under the conditions at a temperature from 500° C. to 800° C. for a time period from 1 second to 100 seconds by means of a continuous annealing line, and strain relief annealing the copper alloy heat-treated under the conditions at a temperature from 400° C. to 600° C. for a time period from 30 seconds to 1000 seconds, wherein the copper alloy material for electric/electronic parts has rates of dimensional changes before and after the strain relief annealing in both directions parallel to and perpendicular to the rolling direction within the range from -0.02% to +0.02%.
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