1. Brass: The three types of materials used are H59, H62 and H65, which are alloys composed of copper and zinc. H59 is the cheapest brass. It has high strength, hardness and good plasticity, but it can still withstand pressure processing well under hot conditions. Its corrosion resistance is general. Other properties are similar to H62; H65 has good mechanical properties and heat Good plasticity in the cold state, good plasticity in the cold state, good machinability, easy to brazing and welding, corrosion resistance, but easy to cause corrosion and cracking, and the price is cheap. The properties of these three materials are very close and very close. Widely used.
2. Bronze: Bronze is also divided into three types of materials: phosphor bronze (c54400), tin bronze (Qsh4-3, Qsh6.5-0.1), and beryllium bronze (c5191, c17300). Tin phosphor bronze has higher corrosion resistance, wear resistance, and no sparks when punched out; the mass fraction of beryllium in beryllium copper is 1.7-2.5%, and beryllium bronze can have extremely high strength and hardness after quenching and aging. With automatic processing equipment for melting, extrusion, calendering, and stretching, such as strong convection bright annealing furnace, it is widely used.
3. Red copper: red copper (T2) contains up to 99.99% copper, has good electrical and thermal conductivity, excellent plasticity, and is easy to heat and cold press processing. It is a large battery in new energy.