EN 1982 CC496K CuSn7Pb15 Bronze Bushing

CuSn7Pb15, also known as CC496K or high-leaded tin bronze, is a popular alloy widely used in the production of bushings and bearings. This alloy is characterized by its specific composition:

• Copper (Cu): 74.0% to 80.0%
• Tin (Sn): 6.0% to 8.0%
• Lead (Pb): 13.0% to 17.0%
• Nickel (Ni): 0.5% to 2.0%
• Trace amounts of other elements such as zinc, iron, and manganese.

CuSn7Pb15-C / CuSn7Pb15-B (CC496K)

Note: The equivalence between standards is not exact, and some variations in composition may occur.

Key Properties of CuSn7Pb15

Mechanical Properties:

• Tensile Strength: Approx. 210 MPa (ultimate), 99 MPa (yield)
• Brinell Hardness: 65 to 72 HB
• Elongation: Around 8%

These mechanical properties make CuSn7Pb15 suitable for applications that require moderate load-bearing capacity and good resistance to wear.

Thermal Properties:

• Melting Point: Ranges from 820 °C (solidus) to 900 °C (liquidus)
• Thermal Conductivity: Approx. 52 W/m·K

Electrical Properties:

• Electrical Conductivity: About 11% IACS, which is relatively low compared to other copper alloys.

CuSn7Pb15 Bronze Bushing (CuSn7Pb15 Bronze Shaft Sleeve) is an alloy product made of copper, tin, and lead, known for its excellent physical and mechanical properties. It has a wide range of applications, mainly in the following areas:

1. Mechanical Equipment
   • High Load Components: Due to its high strength and excellent wear resistance, CuSn7Pb15 bronze bushings are often used in the manufacturing of mechanical parts and components that need to withstand high loads, such as bushings and bearing sleeves. These parts experience significant pressure and friction during operation, and CuSn7Pb15 bronze bushings effectively reduce wear, extending the lifespan of the equipment.
2. Automotive Industry
   • Automotive Components: CuSn7Pb15 bronze bushings are widely used in the automotive industry as well. They are utilized in the manufacturing of bushings or bearings in key components like radiators, gas cylinders, and brake systems, ensuring stable performance even in harsh working environments.
3. Mining and Construction
   • Heavy Equipment: In the mining and construction sectors, heavy machinery such as excavators and loaders must endure significant impact and wear. Due to their wear resistance and corrosion resistance, CuSn7Pb15 bronze bushings play a critical role in manufacturing key components like gears and bearing shells in this equipment.
4. Chemical and Energy Industries
   • Chemical Equipment: In the chemical industry, CuSn7Pb15 bronze bushings can be used in the manufacturing of bushings or bearings in chemical equipment like valves, pipelines, and pumps, to resist corrosion from harsh chemical media.
   • Energy Equipment: In the energy sector, including oil and natural gas extraction and transportation, CuSn7Pb15 bronze bushings can be used in the manufacturing of bushings for related equipment, ensuring stable operation in challenging working environments.
5. Other Fields
   • Electronics Industry: CuSn7Pb15 bronze bushings are also used in the manufacturing of bushings or bearings for electronic components, connectors, terminals, and contacts, meeting the precision and stability requirements of electronic equipment.
   • Aerospace: In the aerospace industry, CuSn7Pb15 bronze bushings can be used in the manufacturing of bushings or bearings for aircraft parts and rocket engine components, handling extreme working environments and complex load conditions.

Conclusion:
CuSn7Pb15 bronze bushings are widely used in various fields such as mechanical equipment, the automotive industry, mining and construction, chemical and energy industries, and others due to their high strength, excellent wear resistance, and corrosion resistance. They play a vital role in ensuring the stable operation of key components and extending the service life of equipment. CuSn7Pb15 is primarily used in applications such as:

• Bearings and bushings in machinery operating under moderate loads.
• Components in electric motors and appliances.
• General mechanical engineering applications where moderate temperatures are expected.

Summary

CuSn7Pb15 is a versatile leaded bronze alloy known for its combination of solid mechanical properties and exceptional machinability. It is widely used in bushings and bearings across various industries, offering reliable performance in environments with moderate load demands. Its composition ensures it remains a strong choice for demanding industrial applications.