Impurities: 0.1 (%) Cu content: 98 (%) Name: chromium zirconium copper Origin: Shanghai Trademark: C18100 softening temperature: 850 (℃) Conductivity: 86 (% IACS) Hardness :75-78 (HRB) Tensile Strength: 430N Elongation%: 30 soldering copper, copper chromium copper alloys belong to a kind of welding performance, heat resistant, good electrical properties. ● Features and Scope: Uses: mainly used for resistance welding electrodes and roulette, switches, circuit breakers, high temperature wire, high-power IC lead frame, semiconductor substrate, radiator and continuous ingot mold welding. For the production of welding, roll welding the electrodes. The main physical parameters: Density g/cm3 Tensile Strength N/mm2 Elongation% Hardness Hrb conductivity (20 ℃) ??IACS (%) Thermal conductivity (20 ℃) ??W / mk 8.9 ≥ 430 75-78 ≥ 15 ≥ 86 330 ● Chemical Composition: Copper Cu: Balance of zirconium Zr: 0.05-0.3 Al Al: 0.1 ~ 0.25 Cr: 0.4 to 1.2 Mg Mg: 0.03 ~ 0.0.06 Note: ≤ 0.5 (impurity) ● Mechanical Properties: Hardness ≥ 75 HRB