| Curie Temperature (°C) |
700-800 |
| Maximum Operating Temperature (°C) |
250 for SmCo5, 350 for Sm2Co17 |
| Resistivity (µ ohm.cm) |
50-90 |
| Hardness (Hv) |
450-600 |
| Density (g/cm3) |
8.0-8.5 |
| Relative Recoil Permeability (µrec) |
1.10 |
| Saturation Field Strength, kOe (kA/m) |
37.5 (3000) |
| Temperature Coefficient of Br (%/°C) |
-0.05 ~ -0.03 |
| Temperature Coefficient of iHc (%/°C) |
-0.25 ~ -0.19 |