Neodymium magnets – also called NdFeB, strong magnets – are the strongest permanent magnets in the commercial magnetic materials market. It has a maximum energy product of 26 MGOe to 52 MGOe. 

A neodymium magnet is a permanent magnet made from an alloy of neodymium, iron, and boron, which form a Nd2Fe14B tetragonal crystal structure. 

It is the 3rd generation of permanent magnets, which was developed in the 1980s. It has a high remanence and coercivity and has several grades, various sizes and shapes.  

With their excellent magnetic performances and lower prices, neodymium magnets can offer greater flexibility in designing new magnetic products or replacing conventional magnets (e.g. ferrite, Alnico, SmCo), which will have higher efficiency, lower cost, and more compact designs. 

 

Neodymium magnets have many applications in different industries and fields. And you can order custom neodymium magnets to fit the special requirements of your applications.  

Knowing the physical parameters of neodymium magnets will be helpful for you to pick the right magnets. Osenc is a custom neodymium magnet supplier, and below is a list of some critical physical parameters of neodymium magnets.  

 

Typical physical Parameters

Thermal coefficient of remanence (Br): -0.09 – -0.11%/°C 

Curie temperature: 320°C – 380°C 

Coefficient of thermal expansion (vertical): 1.0 – 3.0 x 10-6°C-1 

Coefficient of thermal expansion (parallel): +5.0 – +8.0 x 10-6°C-1 

Resistivity: 120 -160 O·cm 

Density: 7.4 – 7.8 g/cm3 

Specific heat: 0.12 Kcal (Kg, °C) 

Thermal conductivity: 77 Kcal/(m.h°C) 

Rigidity: 0.64 N/m2 

Poisson’s Ratio: 0.24 

Vickers hardness: 550 – 650 Hv 

Young’s modulus: 150 – 170 kN·mm-2 

Bending strength: 0.18 – 0.29 kN·mm-2 

Compressive strength: 0.8 – 1.0 kN·mm-2 

Relative recoil permeability: 1.05 

Electrical resistivity: 1.5 x 10-4 Ω/cm