Samarium Cobalt Magnets

  • SmCo Permanent Magnets
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Samarium Cobalt (SmCo) Magnets for High Temperature Applications

Samarium Cobalt (SmCo) magnets are strong permanent magnets with exceptional magnetic properties. They offer excellent temperature stability and a high resistance to corrosion or demagnetization. Part of the rare-earth magnet family, SmCo magnets are ideal for applications involving high or very low temperatures, where magnetic stability is critical, space is a limiting factor and high magnetic strength is required.

We carry a large inventory of SmCo Disc Magnets, not all of which are shown on this website. Contact us today or send us a special request and let us know what you are looking for.

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Samarium Cobalt Magnets Features & Characteristics

Key Attributes & Technical Data for SmCo Magnets

tech dataTechnical Data Samarium Cobalt Magnets
Magnet Materials: SmCo Grades 18 & 26 Hc: 7,200 - 9,200 Oersteds
Magnet Shapes: Discs & Cylinders Hci: 9,000 - 10,000 Oersteds
Magnetization: Axially Magnetized
(thru thickness)
Max Operating Temperature:
500ºF/260ºC - 662ºF/350ºC
Br: 8,600 - 10,500 Gauss Curie Temp: 775ºF/413ºC - 825ºF/441ºC
BHmax: : 18 - 26 MGOe Density (lb/in3): 0.300 - 0.303

SmCo magnets offer excellent temperature and thermal stability, their magnetic properties stay within a very narrow range up to about 300° C (570° F). They exhibit excellent corrosion resistance and do not require any surface treatments. In addition, sintered samarium cobalt magnets offer very high resistance to demagnetization. (top)

Available Grades for Samarium Cobalt Magnets

SmCo magnets are available in a number of different grades that span a wide range of properties and application requirements. We currently stock SmCo disc magnets in grades 18 and 26, not all of which are on this website. Contact us today or send us a special request and let us know what you are looking for. (top)

Temperature Considerations for SmCo Magnets

Maximum operating temperatures for Samarium Cobalt magnets are between 250 and 550 °C; Curie temperatures range from 700 to 800 °C. (top)

Common Applications for Samarium Cobalt Magnets

Because of their high magnetic properties, SmCo magnets are used in applications for the marine, automotive, aerospace, medical, military and industrial automation industries where high-temperature performance is critical. They are commonly used in motors, machinery, pumps, medical devices, magnetic couplings & sensors, magnetic separators, robotics, turbo machinery and more. (top)

Samarium Cobalt Magnet Manufacturing Methods

Sintering is the most common method used for manufacturing SmCo magnets, they can also be manufactured by injection molding and compression bonding. (top)

SmCo Magnet Bonding Applications

SmCo magnets are often assembled into products using "superglues" such as Loctite 325. It's best to avoid placing mechanical stress on this material, and always ensure that bonding surfaces are clean and dry prior to bonding. (top)

Safety Precautions for Samarium Cobalt Magnets

SmCo magnets are hard, very brittle and high in magnetic strength. They can also snap together with great force, and chip or break if dropped or snapped together. Therefore, they require careful handling and packing in order to prevent injuries or damages to the magnets. (top)

Custom Samarium Cobalt Magnets - How Can We Help?

We can custom manufacture SmCo magnets to exact specifications using our in-house manufacturing facilities and experienced team of engineers. Contact us or send us a request for quote and we'll help you determine the most economical solution for your project. For more technical applications, our sister company, Integrated Magnetics specializes in custom magnets & magnetic assemblies. (top)

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