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Samarium Cobalt magnets offer super combination of
extremely high magnetic standard, excellent thermal stability and
distinguished corrosion resistance. Sm2Co17 is better than SmCo5 in
all respects. Because of these merits, Samarium Cobalt magnets are
ideal component specially in applications where temperature changes
across a broad range or environment is corrosive, such as chemical
pump couplings.
Extremely Powerful
The (BH)max of Sm2Co17 is up to 30 MGOe and its Br up to11,000
Gauss.
Very High Resistance to Demagnetization
Maximum Hci of Samarium Cobalt magnets are as high as 25 KOe.
Suitable for Heat Applications
Reversible temperature coefficient is -.03 ~ -.0435 of Br/°C.
Maximum working temperature is 250 ~ 300°C,
under which Samarium Cobalt magnets maintain good magnetic property
to temperature changing.
Outstanding Resistance to Corrosion
There is no need of surface treatment to Samarium Cobalt magnets
even if they will work in humid environments.
Hard and Brittle
It is not possible to machine Samarium Cobalt magnets with
conventional machining. Samarium Cobalt magnets
can be abrasively machined with coolant served to absorb
heating and dust. Without coolant, rare earth magnets could
crack and chip by the heat produced during high speed cutting
or grinding, and the sparks contain the easily oxidized grinding
dust that could cause fire!