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Super Low TCR NiAlFe-2 Alloy Introduction
- Product Details
NiAlFe-2 Alloy Introduction
1. Overview
NiAlFe-2 is a Nickel-Aluminum-Iron (Ni-Al-Fe) alloy with higher electrical resistivity and improved thermal stability compared to NiAlFe-1. It is mainly used in precision resistors, temperature compensation devices, and high-temperature electronic applications where stable electrical properties are required over a wide temperature range.
2. Chemical Composition (Typical)
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | ~60% |
| Iron (Fe) | ~25% |
| Aluminum (Al) | ~15% |
| Other trace elements | <1% |
3. Key Properties
| Property | Value |
|---|---|
| Electrical Resistivity | 0.5 - 1.0 μΩ·m |
| Temperature Coefficient of Resistance (TCR) | Very Low (~0) |
| Melting Point | ~1400°C |
| Density | ~8.1 g/cm³ |
| Corrosion Resistance | Excellent |
4. Applications
✅ Precision Resistors – Used in measuring equipment, industrial electronics, and high-accuracy circuits.
✅ Temperature Compensation – Ideal for resistors that must remain stable under temperature fluctuations.
✅ High-Temperature Electronics – Used in aerospace, sensors, and power electronics due to its oxidation resistance.
✅ Advanced Heating Elements – Applied in cases where a controlled and stable resistance is needed.
5. Differences Between NiAlFe-1 and NiAlFe-2
| Property | NiAlFe-1 | NiAlFe-2 |
|---|---|---|
| Nickel Content | Higher (~70%) | Lower (~60%) |
| Iron Content | Lower (~20%) | Higher (~25%) |
| Aluminum Content | Lower (~10%) | Higher (~15%) |
| Electrical Resistivity | 0.4 - 0.8 μΩ·m | 0.5 - 1.0 μΩ·m |
| TCR Stability | Good | Better |
| Application | General precision resistors | High-stability, high-temperature applications |
6. Advantages of NiAlFe-2
✔ Higher resistance than NiAlFe-1, making it suitable for specialized electrical applications.
✔ Very low TCR, ensuring stable performance across varying temperatures.
✔ Superior oxidation and corrosion resistance, allowing long-term use in harsh environments.
Conclusion
NiAlFe-2 is a high-performance electrical resistance alloy with better stability and higher resistivity compared to NiAlFe-1. It is widely used in high-precision electronics and high-temperature applications requiring exceptional stability.
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