Cr20Ni80 Wire Nickel Alloy 1400℃ Melting Point Used In Industrial Furnaces
Cr20Ni80 Wire: Nickel Alloy 1400℃ Melting Point Used In Industrial Furnaces
Cr20Ni80 nickel-chromium alloy wire is a high-performance resistive electric heating material, mainly composed of 80% nickel and 20% chromium, with a high melting point (about 1400°C-1450°C), and can operate stably at working temperatures up to 1200°C. The resistivity of this alloy wire is about 1.09μΩ·m at 20°C, and it can maintain a stable resistance value in a high-temperature environment. Its excellent oxidation resistance and corrosion resistance make it perform well in high-temperature oxidizing atmospheres, and it also has good processing properties and can be processed into wires of different diameters.
Cr20Ni80 alloy wire is widely used in industrial furnaces, electric heating elements, resistors, and high-temperature heating equipment, and is especially suitable for scenes that require long-term high-temperature stable operation. Its high melting point and good high-temperature stability make it an ideal material for industrial heating and household appliances.
- Advantages
- High resistivity and efficient heat conversion: Cr10Ni90 wire has a high resistivity and can provide high-power heating effects in a small cross-sectional area.
- High temperature stability: It can work stably for a long time at temperatures up to 1300°C and has excellent anti-oxidation performance.
- Corrosion resistance: The high nickel content makes it perform well in humid and corrosive environments.
- Good processing performance: It is easy to process into different shapes and suitable for winding into heating elements.
- Non-magnetic: It is suitable for devices that are sensitive to magnetic fields.
- Fast heating response: Due to its high resistance characteristics, Cr10Ni90 wire can heat up quickly and provide efficient heating effects.
| Performance material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
| Composición | Ni | 90 | Rest | Rest | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 |
| Cr | 10 | 20.0～23.0 | 28.0～31.0 | 15.0～18.0 | 18.0～21.0 | 18.0～21.0 | |
| Fe | － | ≤1.0 | ≤1.0 | Rest | Rest | Rest | |
| Max. temperature( °C ) | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Melting Point ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Density(g/cm3) | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Resistivity at 20ºC(μΩ@m) | 0.76±0.05 | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | |
| Elongation at rupture(%) | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
| Specific Heat J/g.℃ | － | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
| Thermal conductivity KJ/m.h℃ | － | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
| Coefficient of lines expansion a×10-6/(20～1000℃) | － | 18 | 17 | 17 | 19 | 19 | |
| Micrographic structure | － | Austenite | Austenite | Austenite | Austenite | Austenite | |
| Magnetic properties | － | Nonmagnetic | Nonmagnetic | Nonmagnetic | Weak magnetic | Weak magnetic | |
- Q&A
1. Is Cr20Ni80 suitable for electric heating elements?
Yes, it is resistant to high temperatures, oxidation, and has stable resistance. It is a common heating wire material.
2. Is Cr20Ni80 difficult to process?
It has good processability, but hardens quickly and requires regular annealing.
3. How is the oxidation resistance of Cr20Ni80?
It has strong oxidation resistance, and a chromium oxide protective film will form on the surface, which is suitable for high temperature environments.
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