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Alnico Magnets (Aluminium-Nickel-Cobalt Magnets)
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Material Information:
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- Production by casting or powder metallurgical techniques
- An alloy composed of matrix of Al-Ni-Fe-Co
- Excellent stability over a wide temperature range higher than 500°C,
Temperature coefficient of Br and iHc <±0.03%
- Strong corrosion resistance capability without coating for surface protection
- Good resistance to demagnetization from vibration and shock
- Good flux density at an reasonable cost
- Very hard & brittle
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Typical Physical Properties: |
Curie Temperature (°C) |
860 |
Maximum Operating Temperature (°C) |
525-550 |
Resistivity (µ ohm.cm) |
47-54 |
Hardness (Hv) |
520-630 |
Density (g/cm3) |
6.90-7.30 |
Relative Recoil Permeability (µrec) |
1.70-4.70 |
Saturation Field Strength, kOe (kA/m) |
2.7-6.3 (215-500) |
Temperature Coefficient of Br (%/°C) |
-0.025 ~ -0.02 |
Temperature Coefficient of iHc (%/°C) |
+0.01 ~ +0.03 |
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