Alnico Magnets (Aluminum-Nickel-Cobalt Magnets)
- Manufactured by casting or powder metallurgy processes
- Metal alloy consisting of an Al-Ni-Fe-Co matrix
- Excellent temperature stability across a wide operating range of over 500°C, with temperature coefficients of Br and iHc below ±0.03%
- Strong corrosion resistance without the need for a protective surface coating
- Good resistance to demagnetization caused by vibration and shock
- Good magnetic flux density at a reasonable cost
- Brittle and hard
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 |
ChenYang Magnetics supplies all types of sintered and cast Alnico magnets in customized dimensions and shapes according to customer requirements. Their magnetic properties can also be tailored to meet specific needs. Available shapes include discs, cylinders, rings, blocks, segments, spheres, bricks, and other custom designs.
Once you have determined the magnetic specifications required for your application, please contact us. Our R&D team will help you optimize your custom magnets.