Bonded NdFeB Magnets
Bonded NdFeB magnets are magnets made by mixing fast-hardened NdFeB powder and bonding agent through "press molding". It is characterized by one-time molding and multi-pole orientation.
Bonded NdFeB Magnets
| Grade | Residual Induction (Br) | Coercive Force (Hcb) | Intrinsic Coercive Force (Hcj) | Max Energy Product (BH)max | Average Reversible Temp. Coefficient Tk | Max Working Temp. | Distortion Temp. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m³ | MGOe | %/ ℃ | ℃ | ℃ | |
| BN-2 | 300-400 | 3.0-4.0 | 160-240 | 2.0-3.0 | 480-640 | 6.0-8.0 | 16-24 | 2.0-3.0 | -0.11 | 120 | 120 |
| BN-4 | 400-500 | 4.0-5.0 | 240-320 | 3.0-4.0 | 560-720 | 7.0-9.0 | 32-44 | 4.0-5.5 | -0.11 | 120 | 120 |
| BN-6 | 500-600 | 5.0-6.0 | 320-400 | 4.0-5.0 | 560-720 | 7.0-9.0 | 48-60 | 6.0-7.5 | -0.11 | 120 | 120 |
| BN-8 | 600-680 | 6.0-6.8 | 360-440 | 4.5-5.5 | 640-800 | 8.0-10 | 60-72 | 7.5-9.0 | -0.11 | 150 | 150 |
| BN-8H | 600-650 | 6.0-6.5 | 400-480 | 5.0-6.0 | 1040-1360 | 14.0-16.0 | 60-68 | 7.5-8.5 | -0.12 | 160 | 160 |
| BN-8L | 650-680 | 6.5-6.8 | 400-480 | 5.0-6.0 | 900-1120 | 11.0-13.0 | 64-72 | 8.0-9.0 | -0.13 | 160 | 160 |
| BN-9 | 600-680 | 6.0-6.8 | 400-480 | 5.0-6.0 | 640-800 | 8.0-10.0 | 68-72 | 8.5-9.5 | -0.11 | 150 | 150 |
| BN-10 | 680-730 | 6.8-7.3 | 400-480 | 5.0-6.0 | 640-800 | 8.0-10.0 | 76-84 | 9.5-10.5 | -0.10 | 150 | 150 |
| BN-12 | 710-750 | 7.1-7.5 | 440-520 | 5.5-6.5 | 720-880 | 9.0-10.0 | 84-96 | 10.5-12.0 | -0.10 | 150 | 150 |
| BN-12L | 720-760 | 7.2-7.6 | 400-480 | 5.0-6.0 | 480-640 | 6.0-8.0 | 84-96 | 10.5-12.0 | -0.11 | 140 | 140 |
*The above-mentioned data of magnetic properties and physical properties are given at room temperature.
Physical properties of Bonded NdFeB
| parameter | Bonded NdFeB Magnets |
|---|---|
| Curie temperature（℃） | 325 |
| Maximum operating temperature（℃） | 150 |
| Hv（MPa） | 80-120 |
| Density（g/cm3） | 5.8-6.2 |
| Resistivity（Ω·cm） | 0.026 |
| Temperature Coefficient（％/℃） | -0.17 |
| Compressive strength（kg/mm） | 25 |
| Flexural strength（kgf/mm2） | 3 |
