Industrial Leaded Bronze Wear Parts
Leaded Bronze
Grade Material Properties Recommended Applications
Chinese Standard (GB) ASTM Equivalent EN Equivalent JIS Equivalent
ZCuPb10Sn10 C93700 G-CuPb10Sn CAC603 • ZCuPb10Sn10 is a leaded bronze alloy designed for sliding friction applications. It combines excellent anti-friction properties, reliable wear resistance, and good casting and machining performance
• Outstanding lubricity and anti-seizure ability
• Good castability and machinability
• Stable performance under medium speed and light-to-moderate load conditions
• Relatively low strength and corrosion resistance 		• Sliding bearings and bushings: used in automotive engines, machine tool spindles, and motor bearings. Performs best under medium-speed (1000–3000 r/min) and light to moderate load (≤15 MPa) conditions
• Friction components: such as worm gears, sliders, and sleeves, which require long-term stable performance under lubricated conditions
• Hydraulic equipment: including pump housings, valve bodies, and valve cores, where reduced friction is needed without strong chemical interaction with fluids
ZCuPb15Sn8 C93800 G-CuPb15Sn8 CAC604 • ZCuPb15Sn8 is a heavy-duty leaded bronze alloy known for its high lead content, which provides excellent anti-friction and anti-seizure behavior
• The alloy offers stable operation under pressure and sliding contact, reducing the risk of scuffing and wear
• Lower strength and plasticity compared to other bronzes mean it’s best suited for applications that don’t involve strong impact forces
• Shows limited corrosion resistance, so it’s not recommended for highly corrosive environments
• When designing components, it’s important to account for thermal expansion differences to ensure proper fitting and alignment during operation 		• Medium- and heavy-load sliding bearings: such as spindle bearings for large machine tools, rolling mill bearings, and diesel engine crankshaft bearings. Performs well at pressures up to 20 MPa and speeds of 1000–2500 r/min.
• High-friction components: including worm gears, sliders, and bushings, especially in situations with moderate or intermittent lubrication.
• Heavy-duty machinery: such as cranes and presses, where friction pairs require consistent, long-term operation and reduced wear under demanding conditions.
ZCuPb20Sn5 C94100 G-CuPb20Sn CAC605 • ZCuPb20Sn5 is a high-lead bronze alloy designed for heavy-load and low-speed applications with poor lubrication conditions. The high lead content provides excellent self-lubrication and anti-seizing performance, suitable for friction parts that need stable operation
• Used as a safety material for components that must keep running even when lubrication is insufficient
• Low strength, ductility, and corrosion resistance make it unsuitable for impact, high-speed, or corrosive environments
• Should be used under strictly controlled working conditions to ensure durability
• Thermal expansion differences must be considered during design to maintain proper fit and alignment 		• Heavy-load sliding bearings: rolling mill bearings, large crane bearings, and turbine bearing shells; suitable for pressures ≤ 25 MPa and speeds ≤ 1000 r/min.
• Poorly lubricated friction components: bushings and sliders used in mining and construction machinery; ideal for dusty or hard-to-maintain environments
• Extreme-condition components: parts that may experience occasional dry friction (e.g., during emergency shutdowns)
Other Leaded Bronze Grades ZCuPb17Sn4Zn4, C34000, C35000, CC491K
Copper-Based Alloys for Industrial Wear-Resistant Parts

Bronze eccentric bushings are made from high-lead bronze alloys such as ZCuPb10Sn10, ZCuPb15Sn8, and ZCuPb20Sn5. These alloys provide excellent self-lubricating, anti-seizing, and wear-resistant properties, allowing stable performance even under strong impact and heavy dust exposure. The wear resistance can also be enhanced through customized designs to meet the demands of abrasive working conditions.

Bronze nuts and slippers are produced from high-strength copper-based alloys that offer excellent resistance to seawater corrosion. These alloys retain their mechanical integrity and surface stability over time, making them well suited for continuous operation in marine, humid, or chemically active environments.

High-precision bushings are manufactured through centrifugal casting, five-axis CNC machining, and polishing. With strict quality control and CNAS-certified testing, tolerance accuracy reaches ±0.025 mm and surface roughness Ra ≤ 0.8 μm, meeting the standards required for CNC systems.

Yes. Bronze bearings are made following ISO and DIN standards for materials, precision, and surface finish. They can be used with equipment that is manufactured under international requirements, ensuring consistent performance across different applications.

Bronze nuts, sliding bearings and other wear parts can be manufactured according to customer drawings and specifications. Each wear part will be manufactured with micron-level precision to match specific design or size requirements in different industries.