Introduction

• C64750 alloy is a precipitation-hardened nickel-silicon bronze alloy, widely used in various industrial sectors due to its excellent mechanical properties and corrosion resistance. It excels in applications requiring high strength, fatigue resistance, and corrosion protection.
• High Strength and Hardness: After precipitation hardening treatment, the C64750 alloy achieves extremely high strength and hardness, making it ideal for high-load applications.
• Excellent Corrosion Resistance: It offers outstanding resistance to seawater, chemicals, and other corrosive environments, making it suitable for marine and chemical industry applications.
• Good Electrical and Thermal Conductivity: With moderate electrical and thermal conductivity, it is suitable for electronic and electrical applications.
• Good Machinability: It has excellent cold and hot workability, along with good weldability, making it ideal for manufacturing complex-shaped components.
• Heat Treatment: C64750 can be further optimized in terms of mechanical properties through heat treatments such as solution annealing and aging.
• Welding: This alloy offers good weldability and is suitable for processing using conventional welding methods.
• Formability: Due to its good ductility and formability, C64750 is used for producing complex shapes and precision parts.

Chemical Composition

• Ni: 0.5%~3.0%
• Si: 0.1%~0.7%
• Sn: 0.05%~0.8%
• Cu: Remainder

Alloy Standard

• ASTM: C64750
• PoongSan: P26/PMC26 _{is a trademark licensed by PoongSan}

Physical Properties

• Density: 8.90 g/cm³
• Electrical conductivility: 45 IACS%(20°C)*(value for the lowest temper class)
• Modulus of elasticity: 135 GPa
• Coefficient of thermal expansion: 16.4 10^-6/K
• Thermal conductivity: 182 W/(m*K)

Mechanical Properties

Application

• Marine Engineering: Due to its excellent resistance to seawater corrosion, C64750 is widely used in the manufacturing of marine components such as propellers, bearings, seawater coolers, pipelines, and valves.
• Electronics and Electrical Engineering: Used in high-strength and corrosion-resistant electronic and electrical connectors, switch components, and plug-in connectors.
• Aerospace: In the aerospace sector, C64750 is used to manufacture components requiring high strength and wear resistance, such as bearings, gears, and other structural parts.
• Automotive Industry: In the automotive industry, it is used for engine components, transmission systems, and other parts requiring high strength.
• Chemical Industry: Suitable for corrosion-resistant parts in chemical equipment, such as pump components, valves, heat exchangers, and reactor linings.