Copper-nickel heating resistance alloys with high resistance to chemical corrosion and oxidation with low temperature coefficient.
Certain electrical resistance reached by wounding of wires in coils and meantime current passed through it – Heat is generating!
Certain electrical resistance reached by wounding of wires in coils and meantime current passed through it – Heat is generating!
Chemical Composition
| Copper Cu Bal. | Nickel Ni 30.0% | Manganese Mn 1.5% |
Physical properties
| Material | Tensile Strenth, MPa |
Elastic Limit, MPa |
Resistivity at 20°C (µOhm-cm) |
Density (g/cm3) |
Linear Expansion Coeff. (10-6/K) (up to 100°C) |
Approximate Melting Point, (°C) |
| CuNi23Mn | 300-500 | 150-300 | 8.9 | 30 | 15.7 | 1150 |
|---|
Recommended operating temperature in the air is 500°C
Applications:
- Electrical resistors and heating wires
- Heating cables, mats and cords
- Temperature indicators and energy regulators