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Sintered Samarium (Rare Earth) Cobalt

These sintered magnets are produced by a powder metallurgy process and provide an exceptionally high energy product and resistance to demagnetisation. They are normally supplied in a magnetised condition. Being very brittle, they must be handled with extreme care. Highly resistant to corrosion, they also have higher working temperatures than Neodymium-Iron-Boron; maximum for SmCo (1:5) is 250ºC, and for SmCo (2:17) is 300ºC.

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List of shapes available in this material

Typical Magnet and Physical Specifications

MDL
Grade		 DIN Br bHc jHc BHMax
mT Gauss KA/m Oersted KA/m Oersted kJ/m3 MGO
SmCo 1:5 145/120 850 8500 600 7500 1200 15000 145 18
SmCo 2:17 190/95 1030 10300 600 7500 950 12000 190 24
MDL
Grade		 DIN Magnetising Force (minimum) Max working temp Rev.
Temp.
Coeff.of
Br % ºC
kA/m Oersted ºC 20 - 100ºC 20 - 150ºC
SmCo 1:5 145/120 2000 25000 250 -0,04 -0,045
SmCo 2:17 190/95 3500 43750 300 -0,03 -0,035
1:5 2.17
Density g/cc 8,4 8,4
Curie Temp. ºC 720 800
Spec. Res ~Ω mm2/m 0,6 0,8
Hardness (Vickers) 550 650
Young’s Modulus kN/mm2 110 150
Bending Strength N/mm2 120 110
Compressive Strength N/mm2 1000 800
Thermal Conductivity W/mºC 7 12

Sintered Rare Earth Cobalt Graph



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