C63200 aluminum bronze is a high-performance copper-based alloy, a typical grade in the aluminum bronze series. It uses copper (Cu) as a matrix, with the addition of aluminum (Al), iron (Fe), and nickel (Ni), resulting in an alloy with high strength, corrosion resistance, and wear resistance. This material is widely used in the industrial manufacturing of critical components, particularly in high-temperature, high-pressure, and corrosive environments.
Chemical Composition
The main components of C63200 aluminum bronze range as follows (by mass percentage):
Copper (Cu): 80.0%-88.0%
Aluminum (Al): 8.5%-11.0%
Iron (Fe): 3.0%-5.0%
Nickel (Ni): 3.0%-5.0%
Other elements (such as manganese, silicon, etc.): trace amounts
The addition of aluminum significantly improves the alloy's strength and corrosion resistance, while the synergistic effect of iron and nickel refines the grain size, enhancing wear resistance and high-temperature stability.
Physical Properties
Density: Approximately 7.64 g/cm³, slightly lower than pure copper, making it suitable for lightweighting applications.
Melting Point: Approximately 1040°C-1080°C, maintaining good mechanical properties even at high temperatures.
Electrical/Thermal Conductivity: Electrical conductivity is approximately 10%-15% of pure copper, with moderate thermal conductivity, making it suitable for applications requiring heat dissipation but not high electrical conductivity.
Coefficient of Thermal Expansion: Low, offering excellent thermal stability and suitability for environments with fluctuating temperatures.
Mechanical Properties
The mechanical properties of C63200 aluminum bronze can be further optimized through heat treatment or cold working:
Tensile Strength: Approximately 550-690 MPa in the annealed state, reaching over 800 MPa after cold working.
Yield Strength: Approximately 250-350 MPa in the annealed state, increasing to over 600 MPa after cold working.
Elongation: 15%-25% in the annealed state, decreasing to 5%-10% after cold working.
Hardness: With a Brinell hardness (HB) range of 150-220, it offers superior wear resistance to ordinary brass and some steels.
This combination of high strength and toughness makes it ideal for bearing impact loads or fatigue stresses.
Core Properties
Corrosion Resistance: Excellent performance in seawater, acidic environments, and alkaline media, with significant resistance to stress corrosion cracking.
Wear Resistance: High hardness and self-lubricating properties make it suitable for manufacturing friction components such as bearings and gears.
High-Temperature Performance: Can operate for long periods below 400°C, with short-term temperature resistance up to 650°C.
Fatigue Resistance: Resistant to failure under cyclic loads, suitable for high-vibration environments.
Typical Applications
Marine Industry: Propeller shafts, seawater pumps and valves, marine piping systems (seawater corrosion resistant).
Chemical Equipment: Reactor agitators, valve seals, corrosive media transport pipes.
Aerospace: Landing gear bearings, high-temperature hydraulic piping.
Energy: Nuclear power cooling system components, oil well drilling tools.
Mechanical Manufacturing: High-strength bolts, die inserts, wear-resistant liners.
Processing and Manufacturing Processes
Casting: Suitable for complex-shaped pipe fittings, but requires controlled cooling rates to prevent segregation.
Hot Extrusion/Hot Rolling: Produces large-diameter, thick-walled pipes, typically at processing temperatures of 700°C to 850°C.
Cold Drawing/Cold Rolling: Improves dimensional accuracy and surface finish while enhancing strength.
Welding: Inert gas shielded welding (such as TIG welding) is required, followed by stress relief annealing.
Heat Treatment: Solution treatment (900°C–950°C) followed by rapid cooling improves toughness; aging further enhances hardness.
Maintenance and Care
Corrosion Protection: No special protection is required in normal environments. Epoxy or polyurethane coatings can be applied under extreme corrosion conditions.
Cleaning: Use a neutral detergent and avoid contact with strong acids and bases.
Regular Inspection: After extended service, inspect for surface wear and internal cracks (ultrasonic testing is recommended).
Material Selection and Alternatives
Applications: C63200 is preferred for high-load, highly corrosive, or high-temperature environments.
Economical Alternative: C63000 (lower nickel content) is an option for low-load environments, but offers slightly lower temperature resistance.
High-Performance Alternatives: Bronze alloys containing cobalt or beryllium can be considered for extreme environments, but this significantly increases costs.
C63200 aluminum bronze tubes, thanks to their comprehensive performance advantages, have become a key material in high-end industrial fields. Their unique elemental composition and controllable processing technology significantly surpass those of ordinary copper alloys in strength, corrosion resistance, and lifespan. With the development of industries such as marine engineering and new energy, the application prospects of this material will continue to expand.
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.
