Magnetic Terms
Maximum Energy Product (WxH)
The flux density’s maximum energy product and field strength are important magnetic material qualities. If the energy production is high, meaning, the magnetic energy is also high. On the other hand, the higher the maximum energy product of a magnetic material, the more certain tasks will require a lower magnetic volume.
Coercivity Hc
It refers to field force that is important for magnetization elimination. If the coercivity value is higher, it is more resistant to magnetization.
Remanence Br
It is the magnetic material’s residual magnetization up to a closed circle’s saturation. Remanence is stated in Millitesla (mT), Tesla (T), and Gauss (G).
Operating Temperature
It refers to the highest temperature that a magnet can be exposed without compromising to its magnetic power permanent loss. The operating temperature depends on the dimensioning. Factors such as chemical or mechanical stress limit a magnet’s maximum operating temperature.
Curie Temperature
It refers to the temperature at which magnetic material loses its magnetism.
Magnetic Material Features
| Magnetic Material | Maximum Energy Product | Remanence | HCB | Coercivity | Temperature Coefficient per 1⁰C | Operating Temperature | Curie Temperature | Density |
| Isotropic Barium Ferrite | 7.2 up to 7.6 kJ/m3 | 210 up to 220 | 130 up to 135 kA/m | 220 kA/m | -0.20% | 250⁰C | 450⁰C | 4.9 g/cm3 |
| Anisotropic Barium Ferrite | 28.9 up to 29.5 kJ/m3 | 390 up to 400 | 145 up to 160 kA/m | 150 up to 165 kA/m | -0.20% | 250⁰C | 450⁰C | 4.9 g/cm3 |
| Strontium Ferrite Anisotropic | 24.5 up to 25.5 kJ/m3 | 350 up to 370 | 210 up to 245 kA/m | 220 up to 255 kA/m | -0.20% | 250⁰C | 450⁰C | 4.9 g/cm3 |
| AlNiCo 500 | 35 up to 36 kJ/m3 | 1120 up to 1160 | 47 up to 49 kA/m | 47 up to 49 kA/m | -0.02% | 400⁰C | 890⁰C | 7.3 g/cm3 |
| Samarium-Cobalt SM 18 SmCo5 | 140 up to 150 kJ/m3 | 850 up to 890 | 620 up to 670 kA/m | 1100 up to 1200 kA/m | -0.04% | 250⁰C | 720⁰C | 8.3 g/cm3 |
| Samarium-Cobalt SM24 Sm2Co17 | 190 up to 205 kJ/m3 | 1000 up to 1050 | 680 up to 750 kA/m | 1195 up to 1500 kA/m | -0.03% | 250⁰C | 800⁰C | 8.3 g/cm3 |
| Neodymium-Iron-Boron NdFeB 35 | 260 up to 285 kJ/m3 | 1180 up to 1120 | 860 up to 915 kA/m | >=995 kA/m | -0.13% | 80⁰C | 310⁰C | 7.4 g/cm3 |