Magnet physical properties is a good reference value when you choosing a magnet material from NdFeB, SmCo, AlNiCo and Ferrite Magnets. Different materials have different properties. If you can’t find the information you want here, please feel free to contact us.

Magnet Physical Properties

Parameter

Unit

Sintered NdFeB Magnet Standard Data

Curie Temprature320-395increase from N series to AH series
Max. Operating Temperature70-250increase from N series to AH series
ResistivityμΩ.cm120-160
Thermal ConductivityW/M.C7.0-10.0
HardnessHV560-650increase from N series to AH series
DensityG/Cm³7.4-7.7increase from N series to AH series
Recoil Permeability1.02-1.08increase from N series to AH series
Saturation MagnetizationKOe30-40increase from N series to AH series
Temperature Coefficient of Br.%/℃ (20℃ -250℃ )-(0.08-0.12)increase from N series to AH series
Temperature Coefficient of iHc%/℃ (20℃ -250℃ )-(0.34-0.75)increase from N series to AH series
Compressive StrengthN/Mm²1000-1300
Bending SrengthN/Mm²250-400
Young’s ModulusKN/Mm²150-160
Elongation%~0

Parameter

Unit

Injection Bonded Ferrite Magnet Standard Data

Bonded NdFeB Magnet Standard Data

Curie Temprature450310
Max. Operating Temperature120110-150
DensityG/Cm³3.4-3.75.8-6.2
Recoil Permeabilityμ rec1.31.15-1.22
Saturation MagnetizationKoe10>25
KA/m800≥2000
Temperature Coefficient of Br.%/℃-0.2 -0.07 to -0.13

Parameter

Unit

Sm1Co5 Standard Data

Sm2Co17 Standard Data

Curie Temprature700800
Max. Operating Temperature250350
ResistivityμΩ.cm50-6080-90
HardnessHv150-500500-600
Densityg/cm38.38.4
Recoil Permeabilityμ rec1.11.1
Saturation MagnetizationKoe>37.5>25
KA/m>3000≥2000
Temperature Coefficient of Br.%/℃-(0.05-0.03)
Temperature Coefficient of iHc%/℃-(0.25-0.19)
Tensile StrengthN/mm2400350
Compressive strengthN/mm21000
Bending strengthN/mm2150-180130-150
coefficient of thermal expansion
(20 to 200℃)
10-6/k∥ 7 ⊥ 15∥ 11⊥ 13
Specific HeatJ/(Kg.K)370350
Thermal ConductivityW/(m.K)1110
Young’s ModulusMPa~1.3×105~2.0×105
Elasticity ModulusMPa~1.59×105~1.17×105

Parameter

Mark

Unit

Ferrite Standard Data

Recoil Permeabilityμ recGs/Oe1.05-1.3
Curie TempratureTc450
The coefficient of demagnetization to temperatureα (Br)℃-1 -0.2% (0-100℃)
The coefficient of magnetization coercive force to temperatureα (Hc)℃-10.2% -5% (0-100℃)
Densitydg/cm34.7-5.0
ResistivityρΩ.cm≥ 106
The coefficient of linear expansionα℃-17-15 x 10-6
HardnessHv / –480-580

Parameter

Mark

Unit

AlNiCo Standard Data

Densitydg/cm36.9-7.3
Vickers HardnessHvD.P.N520-700
Compression StrengthC.SN/mm2300-400
Coefficient Of Thermal ExpansionC//10-6/°C11.5-13
Electric Resistancermicro Ω.cm45-70
Tensile StrengthσUTS, or SUkg/mm220 – 450 (37 ACA44)
Curie TempratureTc810-860
Transverse Modulus of RuptureN/mm250-690
Specific HeatJ/(kg.k)350-450
Specific Thermal ConductivityW/m.k10-100
Saturation Field StrengthkA/M180-750