Samarium Cobalt Disc Magnets

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Samarium Cobalt Disc Magnets

Samarium cobalt disc magnets are strong permanent magnets that perform well in high or very low temperature environments. Part of the rare earth magnet family, SmCo disc magnets have a high resistance to corrosion or demagnetization. Because of their superior magnetic properties, SmCo disc magnets are ideal for applications where high-temperature performance is critical, space is a limiting factor and high-magnetic strength is required.

Samarium Cobalt Magnet Discs

We carry a large inventory of samarium cobalt 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.

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

* $15.00 total minimum order (excluding shipping & tax if applicable) - Items can be combined to reach the minimum amount.

*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.

Features & Characteristics of Samarium Cobalt Disc Magnets.

Technical Data for SmCo Magnets

Grade 18 SmCo Disc Magnets Technical Data Grade 26 SmCo Disc Magnets Technical Data
Shapes: Discs & Cylinders Shapes: Discs & Cylinders
Magnetization: Axially Magnetized Through the Thickness (THK) Magnetization: Axially Magnetized Through the 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): 0.303

SmCo Disc Magnet Applications

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

Samarium Cobalt 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 low or high temperatures. 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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Standard Dimensional Tolerances for SmCo Disc Magnets

Standard diameter tolerances for Rare Earth Magnets (SmCo & NdFeB) based on the following dimensions:

  • +/- 0.004” on dimensions ranging from 0.040” to 1.000”.
  • +/- 0.008” on dimensions ranging from 1.001” to 2.000”.
  • +/- 0.012” on dimensions ranging from 2.001” to 3.000”.

*Tolerance on thickness is +/-0.004” regardless of size.

Safety Precautions for Samarium Cobalt Disc 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. Therefore, they require careful handling and packing in order to prevent injuries or damages to the magnets.

Custom Samarium Cobalt Disc 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.

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