CuSn12Ni2: High-Performance Tin-Bronze Alloy
CuSn12Ni2 is a versatile tin-bronze alloy with 12% tin and 2% nickel, known for its exceptional wear resistance, corrosion resistance, and mechanical strength. This alloy is widely used in demanding industrial applications due to its reliable performance under high loads and in corrosive environments.
Composition
| Element | Content (%) |
|---|---|
| Copper (Cu) | Balance |
| Tin (Sn) | 11.0–13.0 |
| Nickel (Ni) | 1.5–2.5 |
| Phosphorus (P) | ≤0.25 |
| Impurities | ≤0.5 |
Key Features
High Strength and Hardness
Excellent mechanical properties, making it suitable for heavy-duty applications.
Wear Resistance
Performs well under sliding or abrasive conditions.
Corrosion Resistance
Resistant to seawater, acids, and other corrosive environments.
Good Thermal Conductivity
Ensures efficient heat dissipation.
Ease of Machining
Can be easily processed for complex shapes.
Typical Applications
Marine Industry
Bearings, bushings, and propeller components due to its seawater resistance.
Aerospace and Automotive
High-load bearings and wear-resistant components.
Industrial Machinery
Gears, worm wheels, and heavy-duty machine parts.
Power Generation
Turbine components and electrical connectors.
Construction
Structural components exposed to harsh environments.
Specifications
| Property | Value |
|---|---|
| Density | ~8.8 g/cm³ |
| Tensile Strength | 400–700 MPa |
| Hardness (HB) | 100–200 |
| Elongation | 8–15% |
| Thermal Conductivity | ~50 W/m·K |
Advantages
| Feature | Details |
|---|---|
| High load capacity | Ideal for heavy-duty applications. |
| Corrosion resistance | Long service life in harsh conditions. |
| Versatile machinability | Suitable for intricate designs. |
Limitations
| Constraint | Details |
|---|---|
| Cost | Higher material cost compared to standard bronzes. |
| Limited ductility | Less suitable for applications requiring high flexibility. |
FAQs
What makes CuSn12Ni2 ideal for marine applications?
Its high tin content and nickel addition provide excellent resistance to seawater corrosion and wear.
Can CuSn12Ni2 be welded?
Yes, it is weldable, but preheating and proper filler materials are recommended for optimal results.
What is the typical service temperature range for CuSn12Ni2?
It performs well in temperatures up to 300°C, depending on the application.
Conclusion
CuSn12Ni2 is a premium tin-bronze alloy designed for demanding environments. Its balance of strength, wear resistance, and corrosion resistance ensures reliability across industries, making it a top choice for critical applications.