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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
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