Magnets of Samarium-Cobalt (SmCo)

SmCo Magnets belong to the rare earth magnets, their production process is as of neodymium magnets. The availability of it's raw materials Samarium and Cobalt limited and therefore expensive. SmCo magnets are very brittle, their limited mechanical charateristics are counterbalanced by their superior magnetic properties. The materials is resistant to corrosion and is usable in a large temperature area from -40°C up to +250°C. If you need very good magnetical properties in higher temperature environment, SmCo magnets are the best choice.


from ø 10 mm to ø 110 mm


from ø 1,5 mm to ø 40 mm


from 1,5 mm to 100 mm

special designs

according to your requirements

We've got more than 100 different types on stock. Please ask for your requested design and size.

Physical and Chemical Characteristics

Specification Unit SmCo5 Sm2Co17
rel. Permeability[up]1,05 - 1,11,0 - 1,1
Temperature coefficient TK(B)[%/°K]-0,05-0,03
Temperature coefficient TK(Hc)[%/°K]-0,2-0,2
Saturation field strength Hs[kA/m]25004000
Max. Curie Temperature[°C]700 - 750800 - 850
Max. working temperature[°C]250*300*
Density[g/cm3]8,0 - 8,28,3 - 8,5
Flexual strengthFb[N/mm2]180120
Compressive strength Fp[N/mm2]1000800
Vickers hardness[Hv]400 - 500500 - 600
Specific electric resistance[Ω · mm2 / m]0,5 - 0,6
0,75 - 0,85

Magnetical Data

Material Remanence Energy Product  [kJ/m³] Coercivity field intensity  [kA/m]] max. working -
Br min/max [mT ] BHmax min/max HcB  min/max HcJ min/max temperature [°C]
SmCo5900/960  151/175 652/716>=1194/1512250

Other Types of Magnets