Hard Ferrite Magnets (Ceramic Magnets)
- Manufactured using powder metallurgy processes from Ba/SrO.6 Fe2 O3
- Good resistance to demagnetization
- Excellent corrosion resistance
- Cost-effective due to the abundant availability of raw materials
- Good temperature stability
- High coercivity and high electrical resistivity
- The most widely used type of permanent magnet
- Brittle and hard
Typical Physical Properties
| Curie Temperature (°C) | 450 |
| Maximum Operating Temperature (°C) | 250 |
| Hardness (Hv) | 480-580 |
| Density (g/cm3) | 4.8 - 4.9 |
| Relative Recoil Permeability (µrec) | 1.05 - 1.20 |
| Saturation Field Strength, kOe (kA/m) | 10 (800) |
| Temperature Coefficient of Br (%/°C) | -0.2 |
| Temperature Coefficient of iHc (%/°C) | 0.3 |
| Tensile Strength (N/mm) | <100 |
| Transverse Rupture Strength (N/mm) | 300 |