Ferrite Magnet Grades
Description
12 Years' Professional Rare Earth Magnet Manufacturer
Material: Ferrite (Ceramic)
Ceramic, also known as Ferrite magnets are made of a composite of iron oxide and barium/strontium carbonate by ceramic processing technology. Ferrites are, like most other ceramics, hard and brittle. In terms of the magnetic properties, ferrites are often classified as "soft" and "hard" which refers to their low or high coercivity of their magnetism, respectively.
| Grade | Br (KG) | Hcb (KOe) | Hci (KOe) | BHmax (MGOe) | Tmax |
| C1 | 2.3 | 1.86 | 3.5 | 1.05 | 250°C / 482°F |
| C5 | 3.8 | 2.4 | 2.5 | 3.4 | 250°C / 482°F |
| C7 | 3.4 | 3.23 | 4.00 | 2.75 | 250°C / 482°F |
| C8 | 3.85 | 2.95 | 3.05 | 3.5 | 250°C / 482°F |
| C8B | 4.2 | 2.913 | 2.96 | 4.12 | 250°C / 482°F |
| C9 | 3.8 | 3.516 | 4.01 | 3.32 | 250°C / 482°F |
| C10 | 4.0 | 3.617 | 3.51 | 3.82 | 250°C / 482°F |
| C11 | 4.3 | 2.512 | 2.56 | 4.32 | 250°C / 482°F |
Ferrite Magnet - 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 |
