Physical Properties of a Magnet

Different Types of Magnets and Its Physical Properties

AlNiCo Magnet Parameters

Maximum Operating Temperature 550⁰C
Curie Temperature 860⁰C
Br Temperature Coefficient -0.025 up to -0.02%/⁰C
iHc Temperature Coefficient +0.01 up to +0.03%/⁰C
Density 6.9 up to 7.3 g/cm3
Hardness 520 up to 630 Hv
Resistivity 47 up to 54µΩ.cm
Relative Coil Permeability 1.7 up to 4.7 µrec
Saturation Field Strength 2.7 up to 6.3 kOe

215 up to 500 kA/m
AlNiCo Magnet
Ferrite

Ferrite Magnet Parameters

Maximum Operating Temperature 250⁰C
Curie Temperature 450⁰C
Br Temperature Coefficient -0.2%/⁰C
iHc Temperature Coefficient 0.3%/⁰C
Density 4.8 up to 4.9 g/cm3
Hardness 480 up to 580 Hv
Tensile Strength <100 N/mm2
Relative Coil Permeability 1.05 up to 1.2 µrec
Saturation Field Strength 10 kOe

800 kA/m
Transverse Rupture Strength 300 N/mm2

Neodymium Magnet Parameters

Maximum Operating Temperature 80 up to 240⁰C
Curie Temperature 310 up to 370⁰C
Br Temperature Coefficient -0.12 up to -0.10 %/⁰C
iHc Temperature Coefficient -0.6 %/⁰C
Density 7.4 g/cm3
Hardness 560 up to 580 Hv
Resistivity 160 µΩ.cm
Relative Coil Permeability 1.05 µrec
Saturation Field Strength 30 up to 40 kOe

2400 up to 3200 kA/m
Neodymium Magnet
SmCo Magnet

SmCo Magnet Parameters

Maximum Operating Temperature 250⁰C
Curie Temperature 700 up to 800⁰C
Br Temperature Coefficient -0.05 up to -0.19 %/⁰C
iHc Temperature Coefficient -0.25 up to -0.19 %/⁰C
Density 8 up to 8.5 g/cm3
Hardness 450 up to 600 Hv
Resistivity 50 up to 90 µΩ.cm
Relative Coil Permeability 1.1 µrec
Saturation Field Strength >37.5 kOe

>3000 kA/m

Flexible Magnets Technical Parameters

Elongation 60<I<300 %
Curie Temperature 20<f<100 kg/cm2
Flexibility No crack when twisting around a twisting bar
Twist No crack at 180⁰ twist
Density 3.70 +/-0.2 g/cm3
Hardness 95+/-5  Hv
Relative Coil Permeability 1.05 µrec
Saturation Field Strength 30 up to 40 kOe

2400 up to 3200 kA/m
Flexible Magnets
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