Which expert tells me whether copper is better or tin phosphorus bronze?

Red copper is a relatively pure copper, which can generally be considered as pure copper. It has good conductivity and plasticity, but poor strength and hardness. Copper has excellent thermal conductivity, ductility and corrosion resistance. Trace impurities in red copper seriously affect the electrical conductivity and thermal conductivity of copper. Among them, titanium, phosphorus, iron and silicon significantly reduce the conductivity, while cadmium and zinc have little effect. Sulfur, selenium, tellurium, etc. It has a small solid solubility in copper and can form brittle compounds with copper, which has little effect on electrical conductivity, but can reduce processing plasticity.

Tin-phosphorus bronze has higher corrosion resistance and wear resistance, and it will not produce sparks when it is washed out. For medium speed and heavy load with bearings, the maximum working temperature is 250℃. It has the characteristics of self-aligning, insensitivity to deflection, uniform bearing capacity of shaft, high bearing capacity, synchronous radial load, maintenance-free and self-lubrication. Tin-phosphorus bronze is a kind of alloy copper, which has good conductivity, is not easy to heat up, ensures safety and has strong fatigue resistance. Tin-phosphorus bronze jack reed hard wire electrical structure, no rivet connection or friction contact, can ensure good contact, good elasticity and smooth insertion.