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Low Resistance Alloys: Copper-Nickel Alloys30 Alloy; 15 Alloy; 10 Alloy; 12 Alloy; 5 Alloy: In the Copper-Nickel alloys, lower the resistivity, lower is the temperature coefficient of resistance. These alloys are used as general resistance wires, cores of low temperature heaters, resistance elements of heaters for electrical circuit breakers/fuses.
30 Alloy, 15 Alloy, 10 Alloy, 12 Alloy and 5 Alloy are available in following conditions:
| Alloy | Ni% | Cu% |
|---|---|---|
| 30 Alloy | 23 | Bal. |
| 15 Alloy | 11 | Bal. |
| 10 Alloy | 6 | Bal. |
| 12 Alloy | 8 | Bal. |
| 5 Alloy | 2 | Bal. |
| Alloy | Specific Resistance (µ Ω-cm) | Density (g/cm³) | Linear Expansion Coeff. (T=20-100 °C) |
Maximum Operating Temperature of Element (°C) |
|---|---|---|---|---|
| 30 Alloy | 30 | 8.90 | 15.7 | 400 |
| 15 Alloy | 15 | 8.90 | 16.0 | 400 |
| 10 Alloy | 10 | 8.90 | 16.2 | 300 |
| 12 Alloy | 12 | 8.90 | 16.2 | 300 |
| 5 Alloy | 5 | 8.90 | 16.4 | 300 |
Wire: 12.0 mm diameter to 0.15mm diameter.
Strip: Width 0.4-80 mm, Thickness: 0.10 and above.
Or as per specified resistance.
| Alloy | 30 Alloy | 15 Alloy | 12 Alloy | 10 Alloy | 5 Alloy |
|---|---|---|---|---|---|
| Tensile strength Min-Max (N/mm²) |
340 - 690 | 250 - 540 | 250 - 540 | 230 - 680 | 220 - 440 |
| Elongation % (Approx.: Annealed) |
25 | 25 | 25 | 20 | 20 |
Note: Other Grades of nickel-copper resistance alloys are also available. Please contact us for more information.
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