Copper Nickel (UNS C71500)
Copper Nickel C71500, also known as 70/30 Copper Nickel, is a copper alloy that consists of approximately 70% copper and 30% nickel. It belongs to the copper-nickel family of alloys, which are widely used for their excellent corrosion resistance, high strength, and good thermal conductivity.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | —— | Remainder |
| Iron | 0.4% | 1.0% |
| Lead | —— | 0.05% |
| Manganese | —— | 1.0% |
| Nickel | 29.0% | 33.0% |
| Zinc | —— | 1.0% |
The following table provides a list of copper C71500 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8940 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 370 - 520 MPa |
| Tensile Strength (Yield) | 80 - 480 MPa |
| Young’s Modulus (E) | 150 GPa |
| Shear Modulus (G) | 57 GPa |
| Elongation at Break | 45% |
| Poisson’s Ratio (ν) | 0.33 |
| Thermal Properties | Metric |
| Melting Point | 1170 - 1240 °C |
| Thermal Conductivity | 29 W/m·K |
| Specific Heat Capacity (Cp) | 380 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.62×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 2.67×106 S/m |
| Electrical Resistivity | 3.75×10-7 Ω·m |
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 Copper Nickel C71500
| Advantages | Disadvantages |
|---|---|
| Excellent Corrosion Resistance | High Cost |
| Good Strength and Ductility | Galvanic Compatibility |
| Resistance to Biofouling | Lower Electrical Conductivity |
| Weldability and Fabrication |
Applications of Copper Nickel C71500
Copper Nickel C71500 (70/30 Copper Nickel) is widely used in various industries and applications due to its excellent corrosion resistance, mechanical properties, and other beneficial characteristics. Here are some common applications of Copper Nickel C71500:
- Marine and Offshore: Copper Nickel C71500 is extensively used in marine and offshore applications due to its exceptional resistance to seawater corrosion. It is employed in shipbuilding, offshore platforms, seawater piping systems, heat exchangers, condensers, and other components exposed to marine environments.
- Heat Exchangers and Condensers: The high thermal conductivity and corrosion resistance of Copper Nickel C71500 make it suitable for heat transfer equipment. It is utilized in heat exchangers, condensers, and similar systems where efficient heat transfer and resistance to corrosive fluids are required.
- Power Generation: The alloy finds application in power generation industries, particularly in power plants and desalination plants. It is used in condenser tubes, heat exchangers, and cooling systems where corrosion resistance and thermal conductivity are crucial.
- Chemical Processing: Copper Nickel C71500 is employed in various chemical processing applications. It is utilized in equipment and piping systems for the transportation and storage of corrosive chemicals, acids, and brine solutions.
- Desalination and Water Treatment: Due to its resistance to seawater corrosion, Copper Nickel C71500 is utilized in desalination plants for the production of fresh water from seawater. It is also employed in water treatment facilities for its corrosion resistance and biofouling resistance.