material material content(%) mechanical performance Conductivity (%IACS) Cu others Tensile strength σb (N/mm2) Yield strength σ0.2 (N/mm2) Elongation δ (%) hardness HB ≥ CuAg 99.9 Ag0.07-0.12 250 200 10 80 98 Cu-Cr-Zr 98.0 Cr0.5-1.5 Zr0.08-0.3 350 280 10 110 70 1. material choose 2.content mensurate 3.test 4.machining 5.plating 6.finishing machining 7. detect