Sintered NdFeB
Sintered NdFeB is a most general permanent magnet of rare earth,which possesses high maximum magnetic energy and high intrinsic coercive forve.It is widely used in motor,speakers,magnetic separator,magnetic therapeutics and other high-tech fields.
NdFeB Physical Properties
Temp.coeff.of.Br -0.1%/℃ |
Temp.Coeff.of.Hcj -0.60%/℃ |
Density 7.4-7.8 g/cm3 |
Electrical Resistivity 144μΩ |
Vickers Hardness 600Hv |
Flexural Strength 25kg/mm |
Tensile Strength 8.0kg/m m3 |
Coeff of Thermal Expansion 4*10-6/℃ |
Specific Heat 0.12kCal(kg·℃) |
Thermal Conductivity 7.7kCal(m·h·℃) |
Young’s Modullus 1.6x1011 N/m3 |
Rigidity 0.64 N/m3 |
Poisson’s Ratio 0.24 |
Compressibility 9.8*10-12 m2 /N |
Curie Temperature 310-340℃ |
Relativerecoil permeability μrev 1.05 |