• Big End Bearing or  Connecting Rod Bearing
• Material SAE 794 - CuPb24Sn3
• Material SAE 783 - AlSn20Cu

The combination of softness and strength of this bearing material has a composite structure. For example, the property of it included high fatigue strength, operating temperature, and high strength. These properties have led to tri-metal bearings in compressor and modern diesel engines. Although the engine bearings are steel back, it is also applied as a relatively strong base.