Bronze Alloy CuSn4Zn4Pb4 / UNS C54400
The CuSn4Zn4Pb4 (UNS C54400) bronze alloy is a tin-zinc-lead bronze known for its high strength, wear resistance, and excellent anti-friction properties. Due to its unique characteristics, this material is widely used in mechanical engineering, electrical, automotive, and shipbuilding industries.
Key Material Characteristics
- High mechanical strength – ensures long-lasting durability of components
- Excellent anti-friction properties – minimizes wear and reduces friction
- Good corrosion resistance – performs well in humid and aggressive environments
- Good machinability – easily processed by mechanical machining
- High impact toughness – withstands significant mechanical loads
Applications
- Bearings and bushings – used in high-friction mechanisms
- Gears and worm drives – ensures long service life
- Sliding guides and shafts – applied in industrial machinery
- Automotive industry – components for transmissions and hydraulic systems
- Shipbuilding – parts operating in high-humidity environments
Chemical Composition
| Element | Content, % |
|---|---|
| Copper (Cu) | Balance |
| Tin (Sn) | 3.5-4.5 |
| Zinc (Zn) | 3.5-4.5 |
| Lead (Pb) | 3.5-4.5 |
| Nickel (Ni) | ≤ 0.50 |
| Phosphorus (P) | ≤ 0.10 |
The balance of copper, tin, zinc, and lead ensures excellent anti-friction properties and wear resistance.
Mechanical Properties
- Yield strength: ≥ 250 MPa
- Tensile strength: 500-700 MPa
- Elongation: ≥ 10%
- Hardness: 80-120 HB
- Coefficient of friction: Low
Advantages of CuSn4Zn4Pb4 / UNS C54400 Bronze Alloy
✅ High strength and wear resistance – an excellent choice for load-bearing components
✅ Anti-friction properties – reduces friction and wear
✅ Good corrosion resistance – suitable for humid environments
✅ Easy machinability – well-suited for turning and milling
✅ Resistance to impact loads – used in high-dynamic load mechanisms
The CuSn4Zn4Pb4 (UNS C54400) bronze alloy is an ideal material for applications requiring a combination of strength, durability, and excellent anti-friction properties.
Delivery Forms Bronze Alloy CuSn4Zn4Pb4 / UNS C54400
| CuSn4Zn4Pb4 bronze alloy / UNS C54400 | tape, strip, rod, pipe, wire |

