C836000 – Leaded Gunmetal Bronze Bushing， Leaded Gunmetal

Material C83600 – Leaded Gunmetal Bronze Bushing， LG2 Bronze Bearings: Setting the Industry Standard

LG2 bronze bearings are widely recognized as the benchmark in the industry. These bearings are crafted from continuous cast bronze, adhering strictly to the C83600 (BS1400 LG2) standard. Available in a variety of progressive sizes, LG2 bearings are offered in both imperial and metric dimensions, conveniently indexed by the inside diameter to meet diverse application needs.Material C83600, commonly referred to as leaded gunmetal or leaded red brass, is a type of bronze that is extensively utilized for manufacturing various mechanical components. Particularly, it is widely used for producing bearings or bushings due to its remarkable attributes such as excellent machinability, wear resistance, and corrosion resistance. This article seeks to delve deeper into understanding C83600, exploring its composition, properties, applications, and its prevalent use in manufacturing bushings.

Composition

Leaded gunmetal bronze, C83600, is an alloy comprising:

• Approximately 85% copper (Cu)
• 5% lead (Pb)
• 5% zinc (Zn)
• 5% tin (Sn)

The inclusion of lead enhances the alloy’s machinability, making it easier to process and manufacture various components. Furthermore, tin is added to improve corrosion resistance, especially against seawater, while zinc is incorporated to provide strength and hardness.

Properties

1. Machinability

C83600 possesses excellent machinability due to its lead content, which facilitates the alloy’s formation into complex shapes and sizes. This property is crucial in manufacturing bushings with specific geometric accuracies.

2. Corrosion Resistance

With the incorporation of tin, C83600 exhibits commendable resistance to corrosion, especially against seawater and similar corrosive environments. This characteristic makes it suitable for applications in marine environments and other industries where corrosion resistance is paramount.

3. Wear Resistance

The alloy demonstrates significant resistance to wear, which is vital in applications involving moving parts, such as bushings, to ensure longevity and reliable performance.

4. Thermal and Electrical Conductivity

While not as conductive as pure copper, C83600 still maintains respectable thermal and electrical conductivity, finding its niche in applications requiring the transfer of heat or electric current.

Applications of C83600

• Bushings: Widely used to manufacture bushings due to its wear resistance and machinability.
• Valves: Employed in valve components that require corrosion and wear resistance.
• Fittings: Utilized in various fittings in plumbing and industrial applications.
• Pump Components: Due to its resistance to corrosion and wear, it’s used in pump components, especially in marine environments.

Leaded Gunmetal Bronze Bushing

A. Manufacturing

Bushing manufacturing using C83600 involves processes like casting, machining, and sometimes additional treatments to attain the desired properties and shapes. Sand casting is a common method due to the alloy’s excellent fluidity, enabling it to fill complex mold shapes. Subsequent machining ensures the bushings meet the requisite dimensions and tolerances.

B. Applications

C83600 bushings find applications in various industries, including:

• Automotive: For components that require low friction and wear resistance.
• Marine: In ship components due to its excellent corrosion resistance against seawater.
• Manufacturing Machinery: In moving parts of machines to minimize wear and friction.

C. Advantages

• Low Friction: Provides smooth operation of moving parts.
• Durability: Wear-resistant nature ensures a longer operational life.
• Cost-Effective: Relatively lower cost compared to other bearing materials, offering a cost-effective solution.

D. Challenges

• Limitations in High-Temperature Applications: Not suitable for applications exceeding its operational temperature range.
• Lead Concerns: The lead content may pose environmental and health concerns, necessitating careful handling and disposal.

Conclusion

C83600, with its unique blend of properties such as wear resistance, machinability, and corrosion resistance, has established itself as a reliable material in various industries, particularly in manufacturing bushings. Its ability to perform reliably in environments prone to wear and corrosion makes it a preferred choice. However, it is pivotal to consider its limitations and manage its use judiciously, ensuring optimal performance while mitigating potential environmental and health impacts. Future advancements may explore lead-free alternatives that maintain the beneficial properties of C83600 while alleviating concerns related to lead usage.