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Magnetic Properties of Neodymium Magnets
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Neodymium Magnet Grade
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N35 | 11.7-12.1 KGs | >11.0 KOe | >12 KOe | 33-35 MGOe |
| N38 | 12.2-12.6 KGs | >11.0 KOe | >12 KOe | 36-38 MGOe |
| N40 | 12.6-12.9 KGs | >11.0 KOe | >12 KOe | 38-40 MGOe |
| N42 | 13.0-13.2 KGs | >11.0 KOe | >12 KOe | 40-42 MGOe |
| N45 | 13.3-13.7 KGs | >11.0 KOe | >12 KOe | 43-45 MGOe |
| N48 | 13.8-14.2 KGs | >11.0 KOe | >12 KOe | 45-48 MGOe |
| N50 | 14.1-14.5 KGs | >11.0 KOe | >11 KOe | 48-50 MGOe |
| N52 | 14.5-14.8 KGs | >11.2 KOe | >11 KOe | 49.5-52 MGOe |
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N35M | 11.7-12.1 KGs | >11.4 KOe | >14 KOe | 33-35 MGOe |
| N38M | 12.2-12.6 KGs | >11.4 KOe | >14 KOe | 36-38 MGOe |
| N40M | 12.6-12.9 KGs | >11.4 KOe | >14 KOe | 38-40 MGOe |
| N42M | 13.0-13.3 KGs | >11.4 KOe | >14 KOe | 40-42 MGOe |
| N45M | 13.3-13.7 KGs | >11.4 KOe | >14 KOe | 42-45 MGOe |
| N48M | 13.6-14.2 KGs | >11.4 KOe | >14 KOe | 45-48 MGOe |
| N50M | 14.1-14.5 KGs | >11.4 KOe | >14 KOe | 48-50 MGOe |
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N33H | 11.4-11.7 KGs | >10.3 KOe | >17 KOe | 31-33 MGOe |
| N35H | 11.7-12.1 KGs | >10.8 KOe | >17 KOe | 33-35 MGOe |
| N38H | 12.2-12.6 KGs | >11.4 KOe | >17 KOe | 36-38 MGOe |
| N40H | 12.6-12.9 KGs | >11.4 KOe | >17 KOe | 38-40 MGOe |
| N42H | 13.0-13.3 KGs | >11.4 KOe | >17 KOe | 40-42 MGOe |
| N45H | 13.3-13.7 KGs | >11.4 KOe | >17 KOe | 42-45 MGOe |
| N48H | 13.6-14.2 KGs | >11.4 KOe | >16 KOe | 45-48 MGOe |
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N30SH | 10.8-11.2 KGs | >10.1 KOe | >20 KOe | 28-30 MGOe |
| N33SH | 11.4-11.7 KGs | >10.3 KOe | >20 KOe | 31-33 MGOe |
| N35SH | 11.7-12.1 KGs | >10.8 KOe | >20 KOe | 33-35 MGOe |
| N38SH | 12.2-12.6 KGs | >11.4 KOe | >20 KOe | 36-38 MGOe |
| N40SH | 12.6-12.9 KGs | >11.4 KOe | >20 KOe | 38-40 MGOe |
| N42SH | 13.0-13.3 KGs | >11.4 KOe | >20 KOe | 40-42 MGOe |
| N45SH | 13.3-13.7 KGs | >11.4 KOe | >19 KOe | 43-45 MGOe |
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N28UH | 10.4-10.8 KGs | >9.8 KOe | >25 KOe | 26-28 MGOe |
| N30UH | 10.8-11.2 KGs | >10.1 KOe | >25 KOe | 28-30 MGOe |
| N33UH | 11.4-11.7 KGs | >10.3 KOe | >25 KOe | 31-33 MGOe |
| N35UH | 11.7-12.1 KGs | >10.8 KOe | >25 KOe | 33-35 MGOe |
| N38UH | 12.2-12.6 KGs | >11.4 KOe | >25 KOe | 36-38 MGOe |
| N40UH | 12.6-12.9 KGs | >11.4 KOe | >25 KOe | 38-40 MGOe |
| Grade | 剩余磁通密度 （BR） | 矫顽力 （HCb） | 内禀矫顽力 (Hcj) | 最大磁能积 （BH）max |
| N30EH | 10.8-11.2 KGs | >10.1 KOe | >30 KOe | 28-30 MGOe |
| N33EH | 11.4-11.7 KGs | >10.3 KOe | >30 KOe | 31-33 MGOe |
| N35EH | 11.7-12.1 KGs | >10.8 KOe | >30 KOe | 33-35 MGOe |
| N38EH | 12.2-12.6 KGs | >10.8 KOe | >30 KOe | 36-38 MGOe |
Thermal characteristics
| Grade | Coefficient of thermal expansion | Maximum operating temperature | Curie temperature | Coefficient of thermal conductivity |
| %/°C | °C (°F) | °C (°F) | kcal/m-h-°C | |
| N | -0.12 | 176°F (80°C) | 590°F (310°C) | 7.7 |
| NM | -0.12 | 212°F (100°C) | 644°F (340°C) | 7.7 |
| NH | -0.11 | 248°F (120°C) | 644°F (340°C) | 7.7 |
| NSH | -0.10 | 302°F (150°C) | 644°F (340°C) | 7.7 |
| NUH | -0.10 | 356°F (180°C) | 662°F (350°C) | 7.7 |
| NEH | -0.10 | 392°F (200°C) | 662°F (350°C) | 7.7 |
Physical and mechanical properties
| Density | 7.4-7.5 g/cm3 |
| Compressive strength | 110 kg/mm2 |
| Bending strength | 25 kg/mm2 |
| Vickers hardness（HV） | 560-600 |
| Tensile strength | 7.5kg/mm2 |
| Young modulus | 1.7 x 104 kg/mm2 |
| Recoil permeability | 1.05 μrec |
| Resistance（R） | 160 μ-ohm-cm |
| Heat capacity | 350-500 J/(kg.°C) |
| Thermal expansivity（0〜100°C） Parallel direction of magnetization | 5.2 x 10-6 /°C |
| Thermal expansivity（0〜100°C） Vertical direction of magnetization | -0.8 x 10-6 /°C |
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