Samarium Cobalt Magnets

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Samarium Cobalt Magnets

Samarium Cobalt (SmCo) magnets are strong permanent magnets with exceptional magnetic properties. They offer excellent temperature stability (they can operate in temperatures up to 525°F (300°C), and are highly resistant to corrosion or demagnetization. Part of the rare-earth magnet family, SmCo magnets are ideal for technical and industrial applications involving high or very low temperatures, where magnetic stability is critical, space is a limiting factor and high magnetic strength is required.

Rare Earth SmCo Magnets

As a trusted supplier of high-performance rare-earth magnets, Magnet Shop carries a large inventory of smco disc and block magnets in a wide range of sizes and premium grades. We can also custom fabricate specialty shapes and sizes to your exact specifications upon special request. Contact us today to let us know what you are looking for, and we'll help you find the optimal solution for your project's requirements.

*Note: The approximate pull info listed is for reference only. These values are calculated assuming the magnet will be attached to a flat, ground 1/2" thick mild steel plate. Coatings, rust, rough surfaces, and certain environmental conditions can significantly reduce the pull force. Please be sure to test the actual pull in your actual application. For critical applications, it is suggested that the pull be de-rated by a factor of 2 or more, depending on the severity of a potential failure.

Attributes & Technical Info for Rare Earth SmCo Magnets

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.

SmCo Magnets Technical Data  
Grade: 18 Grade: 26
Shapes: Discs, Cylinders, Blocks & Bars Shapes: Discs, Cylinders, Blocks & Bars
Magnetization: Axially Magnetized Through Thickness (THK) Magnetization: Axially Magnetized Through Thickness (THK)
Br: 8,600 Gauss Br: 10,500 Gauss
BHmax: 18 MGOe BHmax: 26 MGOe
Hc: 7,200 Oersteds Hc: 9,200 Oersteds
Hci: 9,000 Oersteds Hci: 10,000 Oersteds
Max Operating Temperature: 500ºF/260ºC Max Operating Temperature: 662ºF/350ºC
Curie Temp: 775ºF/413ºC Curie Temp: 825ºF/441ºC
Density (lb/in3): 0.300 Density (lb/in3): 0.300

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 your requirements.

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.

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.

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.

Safety Precautions for Samarium Cobalt Magnets

SmCo Safety Precautions Please note that special safety precautions should be taken when handling & packaging this material!
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.

Common Applications for Samarium Cobalt Magnets

Robotic Arms Electric Motors MRI Scanner Military Missile Components Aircraft Tail Fin Rudders

Samarium Cobalt (SmCo) magnets have excellent temperature stability while maintaining their magnetic properties in extreme temperature conditions. They are well suited for technical applications where high-performance and magnetic strength is required in very high or low temperature environments. SmCo magnets are widely used in the automotive, aerospace, medical, military, industrial manufacturing, semiconductor, wind, power, oil and energy industry.

Common applications for SmCo magnets include:

  • High Performance Motors
  • Actuators
  • Generators
  • Turbo Machinery
  • Electric Motors
  • Magnetic Separation Devices
  • Traveling Wave Tubes
  • Magnetic Couplings
  • Magnetic Bearings
  • Sensor Systems
  • Drilling Equipment
  • Wind Turbine Equipment
  • Energy Recovery Systems
  • Medical Devices
  • Missile Components
  • Industrial Automation Equipment
  • Pipeline Inspection
  • Robotic Arms
  • Gyroscopes
  • Accelerometers
  • Particle Accelerators
  • Sputtering Deposition
  • Magnetic Drive Components
  • Halbach Arrays & more

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Custom Orders for Samarium Cobalt Magnets

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.

Choose Magnet Shop for All Your Magnet Needs

In addition to our wide selection of samarium cobalt magnets, we offer licensed magnets in premium grades, sizes, shapes, and materials, including neodymium magnets, alnico magnets, ceramic magnets, flexible magnets, and more. With fast shipping and bulk pricing options, Magnet Shop is an industry leading supplier of rare earth magnets, and a one stop source for all your magnet needs.