Cast Beryllium Bronze
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Copper Alloy
Cast beryllium bronze is a copper alloy primarily composed of copper and beryllium, with the beryllium content typically ranging between 0.5% and 2%. It is the highest strength copper alloy, known for its excellent mechanical properties, wear resistance, corrosion resistance, and high-temperature performance.
- Cast beryllium bronze is one of the highest strength and hardness alloys in the copper alloy family, with significantly improved mechanical properties after heat treatment.
- It offers outstanding corrosion resistance, particularly in harsh environments such as seawater and salt spray.
- The alloy retains good mechanical properties even at high temperatures.
- Cast beryllium bronze has good fluidity and castability, enabling the creation of complex-shaped parts.
- Its high hardness and strength provide excellent wear resistance.
- With its high strength and hardness, cast beryllium bronze is ideal for components that endure extreme loads.
Specifications
| Cast Beryllium Bronze Plate/Sheet | |
| Thickness | 5mm-300mm |
| Width | 200mm-1000mm |
| Length | 1000mm-2000mm |
| Cast Beryllium Bronze Rod | |
| Diameter | 10mm-500mm |
| Length | 500mm-2000mm |
| Cast Beryllium Bronze Wire | |
| Diameter | 1mm-10mm |
Chemical Composition
| Copper (Cu) | Rest |
| Beryllium (Be) | 1.8%-2.1% |
| Cobalt (Co) | 0.2%-0.6% (to enhance age hardening effect) |
| Other Elements | ≤ 0.5% (e.g. nickel and iron) |
Physical Properties
| Density | 8.25-8.4g/cm³ |
| Melting Point | 960°C-1025°C |
| Thermal Conductivity | 105-130 W/(m·K) (20°C) |
| Electrical Conductivity | 16%-25% IACS (International Annealed Copper Standard) |
| Coefficient of Thermal Expansion | 17×10⁻⁶/K（20°C-300°C |
Mechanical Properties
| Tensile Strength | Solid solution state | 550-800 MPa |
| After aging treatment | 950-1200 MPa | |
| Yield Strength | After aging treatment | ≥ 600 MPa |
| Elongation at Break | Depending on heat treatment condition | 1%-10% |
| Hardness | Solid solution state | 200-300 HB |
| After aging treatment | 280-420 HB |
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