Mechanical parameters of the most common types of permanent magnets

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MMT rare-earth magnets
MMT magnet types
Hysteresis characteristics
Magnetic parameters
Electric and calorimetric parameters
Mechanical parameters

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Table4. Mechanical parameters
of the most common types of permanent magnets

Material Young's
modulus,
kN/mm² Mechanical strength , N/mm² Hardness index

bending
compression stretching Hv HRc

Barium
Ferrite 120-150 ~50 ~700 ~50 6-7 after Moos

Strontium
Ferrite 120-150 50-55 700-750 ~50 6-7 after Moos

Iron-Chromium-Cobalt - - - 100-130 - 36-40

Alnico 180-200 150-350 1100-1800 ~100 - 43-60

SmCo₅ 110-120 120 800-1000 40-70 450-560 55-70

Sm₂Co₁₇ ~150 120-150 ~850 36-50 500-670 60-75

Nd-Fe-B ~150 250-280 ~1050 70-140 560-680 52-54


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