Physical Properties of NdFeB Magnet

Density(g/cm3)

7.3-7.5

Curie Temperature ()

320

Max. Operating Temperature ()

220

Relative Permeability

1.05

Flexural Strength (N/nm2)

250

Compressive Strength (N/nm2)

1100

Tensile Strength (N/nm2)

75

Hardness (Hv)

550-650

Temperature Coefficient of Br (%/)

-0.09~-0.12

Temperature Coefficient of Hcj (%/)

-0.50~-0.65

Curie Temp.

Tc

°C

800~850

Coeff. of thermal expansion

C //

1/°C

~8×10-5

Density

D

g/cm3

8.3~8.5

C

1/°C

~11×10-5

Recoil Permeability

µrec

1.00~1.05

Regidity strength

N/m2

~1.5×108

Max. Working Temp.

Tmax

°C

350

Compress strength

N/m2

~8×108

Electrical Resistivity

Ω. Cm

~8.6×10-5

Tensile strength

N/m2

~3.5×107

Vickers Hardness

Hv

500~600

young's modulus

N/m2

~1.2×1011

Thermal Conduct Rate

W/mK

~12

Magnetization field Ha

kA/m

≥1600