C70500 CuNi6
CuNi6 is a copper-nickel alloy (CuNi alloy) with low resistivity suitable for use at temperatures up to 300°C (570°F). The alloy is used in forming wires that are typically used for low-temperature applications such as heating cables.
Specifications
Chemical Composition:
| Elements | Min (%) | Max (%) |
| Cu | – | Rem |
| Pb | – | 0.05 |
| Zn | – | 0.20 |
| Fe | – | 0.10 |
| Ni | 5.8 | 7.8 |
| Mn | – | 0.15 |
| (1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co. | ||
Chemical Composition:
Mechanical properties:
Physical Properties:
Temperature factor of resistivity:
Coefficient of thermal expansion:
Thermal conductivity:
Specific Heat Capacity:
| Ni % | Cu % | |
| Nominal composition | 6.0 | Bal. |
| Wire size | Yield strength | Tensile strength | Elongation |
| Ø | Rp0.2 | Rm | A |
| Mm | MPa | MPa | % |
| 1.00 | 100 | 280 | 30 |
| Density g/cm3 | 8.9 |
| Electrical resistivity at 20°C O mm2/m | 0.10 |
| Temperature°C | 20 | 100 | 200 | 300 |
| Ct | 1.00 | 1.06 | 1.11 | 1.19 |
| Temperature°C | Thermal Expansion x10-6/K |
| 20 – 100 | 16 |
| Temperature°C | 20 |
| W m-1 K-1 | 90 |
| Temperature°C | 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 |
