CuNi2 Resistance Wire
Copper-nickel alloy (CuNi alloy) with low resistivity for use at temperatures up to 300°C (570°F).
CuNi2.2 is typically used for low-temperature applications such as heating cables in electric blankets and pillows.
| Chemical composition : | |||
| Ni % | Cu % | ||
| Nominal composition | 2.2 | Bal | |
| Mechanical properties: | ||||
| Wire size | Yield strength | Tensile strength | Elongation | |
| Ø | Rp0.2 | Rm | A | |
| Mm | MPa | MPa | % | |
| 1.00 | 110 | 240 | 30 | |
| Physical properties: | ||||
| Density g/cm3 | 8.9 | |||
| Electrical resistivity at 20°C O mm2/m | 0.05 | |||
| Temperature factor of resistivity: | |||||||
| Temperature°C3 | 20 | 100 | 200 | 300 | |||
| Ct | 1.00 | 1.11 | 1.25 | 1.40 | |||
| Coefficient of thermal expansion: | |
| Temperature°C3 | Thermal Expansion x10-6/K |
| 20 – 100 | 16.5 |
| Thermal conductivity: | |
| Temperature°C3 | 20 |
| W m-1 K-1 | 130 |
| Specific heat capacity: | |
| Temperature°C3 | 20 |
| kJ kg-1 K-1 | 0.380 |
| Melting point °C | 1090 | |
| Max continuous operating temperature in air °C | 300 | |
| Magnetic properties | The material is non-magnetic | |
