Neodymium Iron Boron Magnets (NdFeb)
Sintered Neodymium magnets (also known as NdFeB magnets) are the most common type of rare earth magnet.
They are composed of a Neodymium, Iron and Boron alloy that forms the Nd2Fe14B tetragonal crystal structure. Neodymium magnets have the strongest magnetic properties currently available on the market.
They are suitable for applications that require high induction and small sized magnets or motors.
They reach their maximum performance when used on:
- New generation brushless motors
- High performance generators
| NEODYMIUM-IRON-BORON | ||
| Curie temperature | °C | > 310 |
| Recoil permeability (µr) | – | 1.1 |
| Saturation field | kOe | > 25 |
| Electrical resistivity | Ω m | 150 X 108 |
| Compressive strength | N/mm2 | ~ 1050 |
| Density | g/cm3 | 7.5 – 7.6 |
| Flexural strength | N/mm2 | 250 |
| Tensile strength | N/mm2 | 75 |
| Hardness – Vickers | HV | ~ 600 |
| Young’s Modulus | N/mm2 | 160 X 103 |
| Specific heat | kcal/kg.°C | 0.12 |
| Thermal conductivity | kcal/m/hr/°C | ~ 7.7 |
| Coeff. of thermal expansion // | 10-6/°C | -1.5 |
| Coeff. of thermal expansion_ | 10-6/°C | 5 |