The tin content of cupreous copper is generally between 3~14%. The tin content of plastic copper is not more than 8%, and phosphorus, lead, zinc and other elements are sometimes added. Phosphorus is an excellent deoxidizer and improves fluidity and wear resistance. The machinability and wear resistance can be improved by adding lead, and the casting function can be improved by adding zinc. This kind of alloy has high mechanical function, anti-wear function and corrosion resistance, free cutting, good welding performance, stable shrinkage, non-magnetic. Cupreous copper is a non-ferrous metal alloy with the smallest shrinkage in foundry metallurgy, which is used for processing castings with complex shapes, clear contours and low air tightness requirements. Cupric copper is very resistant to corrosion in atmosphere, sea water, fresh water and steam. It is widely used in steam boilers and ship parts. Cupric copper with phosphorous has excellent mechanical function and can be used as wear-resistant parts and elastic parts for high precision work. Cupric copper with lead is commonly used for wear-resistant parts and sliding bearings. Cupric copper with zinc can be used as high air tightness castings. Cupric copper is the most widely used and consumed in the electrical and electronic industries, accounting for more than half of the total consumption. Used for all kinds of cables and wires, motors, transformers, etc. Used for making industrial valves and accessories, sliding bearings, moulds, heat exchangers and pumps. Widely used in the chemical industry in the manufacture of vacuum equipment, alembic, brewing pot. In the construction industry, as a variety of pipes, pipe accessories, decoration equipment.
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