Grade Sm2Co17 Specification:
Coating options: NiCuNi or no coating
Shape options: Disc, Ring, Cylinder, Block, Segment, Irregular shape etc.
Magnetization direction options:
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Samarium cobalt magnet is one of the rare earth permanent magnets. It includes SmCo5 (1:5), and Sm2Co17 (2:17).
The advantages and features of SmCo5 & Sm2Co17:
Samarium Cobalt magnet is made of the mixed materials of metal
cobalt, samarium or praseodymium by melted crushed, pressured and
Compared with Sm2Co17, the properties of mechanical and ductility
of Sm1Co5 is better. So Sm1Co5 is superior choice for the magnet
that cannot be processed by Sm2Co17 material.
Sm1Co5 materials is easier to process irregular-shape magnets. The
operating temperature of the Sm1Co5 magnet can reach 250℃. Before
designing, we suggest that users get some knowledge of the
properties and characteristics of SmCo5 (1:5) and Sm2Co17 (2:17),
and then choose reasonable and suitable samarium cobalt material.
For the thin wall or the thin thickness magnets, we recommend that
customers to consider Sm1Co5 as material.
The BH(max) of Sm2Co17 magnets are 20-32MGoe, which is slightly
higher than Sm1Co5 magnets. Sm2Co17 magnets can bear operating
temperature 350℃. Sm2Co17 magnets mainly are used in aerospace,
automotive sensors, high temperature motor, microwave devices,
military field because of low temperature coefficient, slightly
stronger anti-corrosive quality. Sm2Co17 magnet is more brittle
than Sm1Co5 magnet. So the magnets should be handled gently when
install. Keep two magnets away or away from iron material in order
to prevent the magnets damage or cracks.
Some users will magnetize themselves for their application. Please
pay attention, Sm2Co17 magnet is hard to be fully magnetized than
Sm1Co5 magnets. It needs greater magnetic field. Sm1Co5 magnets
requires magnetic field about 40,000 gauss.
The users should set up the magnetizing device according to the
Samarium Cobalt material 1:5 and 2:17.
Compared with neodymium magnet, Samarium cobalt magnets have
superior anti - corrosive and oxidation resistance. So usually it
doesn’t need coating. But if customer needs coating for nice
appearance, it can be plated nickel, zinc, gold, or epoxy or other
In addition to the normal magnetization direction, our company can
manufacture SmCo magnet with axial multi-poles. The deviation of
magnetization direction can be controlled between 2° -3°.
Samarium cobalt magnets are widely used in medical equipment,
apparatus, instrumentation, aerospace, defense industry, micro-wave
devices, communications, sensors, magnetic processor, electrical,
magnetic cranes, etc.