Chemical Composition and Material Properties
C69800 is a high-performance silicon bronze alloy primarily composed of copper (Cu), silicon (Si), manganese (Mn), and trace amounts of other elements. Its typical chemical composition is: ≥94% copper, 1.5%-3.0% silicon, 0.5%-1.3% manganese, with trace amounts of iron and zinc. This alloy, strengthened by silicon, combines excellent mechanical properties with corrosion resistance while maintaining good machinability and weldability.
Physical and Mechanical Properties
C69800 copper exhibits high strength, hardness, and wear resistance, with a tensile strength exceeding 550 MPa and an elongation of approximately 20%, making it suitable for high-load environments. While its electrical and thermal conductivity is slightly lower than that of pure copper, it still meets general industrial requirements. Furthermore, this alloy exhibits excellent corrosion resistance in seawater, acidic, and alkaline environments, making it particularly susceptible to stress corrosion cracking in marine engineering applications.
Processing and Technology Advantages
C69800 copper rods and plates are easy to process, both hot and cold, and can be formed through stamping, forging, and cutting. They also exhibit excellent weldability and are suitable for various connection methods, including argon arc welding and brazing. The surface can be electroplated and polished to further enhance aesthetics and weather resistance.
Typical Applications
1. Marine Engineering: Used in ship fittings, desalination equipment, valves, and pump components, offering outstanding resistance to seawater corrosion.
2. Mechanical Manufacturing: Suitable for high-strength gears, bearings, bushings, and other wear-resistant parts, particularly in chemical equipment.
3. Power Electronics: Suitable for conductive structural components, such as switch contacts and connectors, balancing electrical conductivity and mechanical strength.
4. Architectural Decoration: Used in outdoor sculptures and architectural paneling, where weather resistance is critical, achieving both functionality and aesthetics.
C69800 copper tubes and plates, due to their high strength, corrosion resistance, and ease of processing, are commonly used in the industrial and architectural fields. Whether it is a harsh marine environment or precision mechanical components, it can provide reliable performance and long life.
The company has a cluster of leading copper processing production lines in China, including:
German imported precision copper tube production line (annual output of 30,000 tons)
Japanese technology copper foil rolling line (thinnest up to 6μm)
Fully automatic copper bar continuous extrusion line
Intelligent copper sheet and strip finishing mill unit
Digitalized control and management of the whole production process is realized through MES system, and the dimensional accuracy of the products can reach ±0.01mm.
