Tin Bronze (UNS C90500)
Tin Bronze C90500 is a copper-based alloys that contain significant amounts of tin, which enhances its strength, corrosion resistance, and wear resistance. It is known for its excellent mechanical properties, including high tensile strength, good ductility, and low friction coefficient.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | 86.0% | 89.0% |
| Aluminum | —— | 0.005% |
| Antimony | —— | 0.2% |
| Iron | —— | 0.2% |
| Lead | —— | 0.3% |
| Nickel | —— | 1.0% |
| Phosphorus | —— | 0.05% |
| Silicon | —— | 0.005% |
| Sulfur | —— | 0.05% |
| Tin | 9.0% | 11.0% |
| Zinc | 1.0% | 3.0% |
The following table provides a list of bronze C90500 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8720 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 310 MPa |
| Tensile Strength (Yield) | 150 MPa |
| Young’s Modulus (E) | 105 GPa |
| Elongation at Break | 25% |
| Poisson’s Ratio (ν) | 0.34 |
| Brinell Hardness | 75 |
| Thermal Properties | Metric |
| Melting Point | 854 - 1000 °C |
| Thermal Conductivity | 74 W/m·K |
| Specific Heat Capacity (Cp) | 377 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.0×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 6.38×106 S/m |
| Electrical Resistivity | 1.57×10-7 Ω·m |
| Magnetic Permeability | 1.0 |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of Tin Bronze C90500
| Advantages | Disadvantages |
|---|---|
| High Strength | High Cost |
| Good Corrosion Resistance | Limited Availability |
| Good Wear Resistance | Sensitive to Certain Environments |
| Good Machinability |
Applications of Tin Bronze C90500
Tin Bronze C90500, with its desirable properties, finds applications in various industries. Here are some common applications of Tin Bronze C90500:
- Bearings and Bushings: Tin Bronze C90500 is widely used in the manufacturing of bearings and bushings due to its excellent wear resistance, low friction coefficient, and ability to withstand heavy loads. It is commonly found in automotive, industrial machinery, and marine applications.
- Gears and Worm Wheels: The high strength and wear resistance of Tin Bronze C90500 make it suitable for gears and worm wheels that operate under heavy loads and require good resistance to wear and friction.
- Pump Components: Tin Bronze C90500 is utilized in the production of pump components such as impellers, casings, and wear rings due to its corrosion resistance, machinability, and ability to handle abrasive and corrosive fluids.
- Valve Components: Valves require materials that can withstand corrosion and offer good mechanical properties. Tin Bronze C90500 is often employed for valve bodies, stems, and seats in applications involving water, steam, or corrosive media.
- Marine Hardware: The corrosion resistance of Tin Bronze C90500 makes it suitable for marine applications, including marine hardware like propellers, ship fittings, and underwater fasteners, where it is exposed to seawater and harsh marine environments.