Try MIL-HDBK-5H, Paragraph 7.3 COPPER and COPPER ALLOYS, you will find
mechanical properties, stress strain curves very useful for non linear
analysis, many graphs showing influence of temperature on mechanical
properties, also N-S curves for fatigue design. There are
Copper - Manganese and Copper - Beryllium alloys.
Adolfo Galvez MSc.
Lima - PERU