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Samarium Cobalt Magnets

Samarium Cobalt magnets are a popular solution to high-temperature applications, with a strong resistance to corrosion thanks to their alloy properties. At Magnet Expert, we offer various shapes and sizes, with pull sizes ranging from 0.06kg to 16.7kg.

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  • 2mm dia x 1mm thick Samarium Cobalt Magnet - 0.06kg Pull
  • 2mm dia x 2mm thick Samarium Cobalt Magnet - 0.11kg Pull
  • 3mm dia x 1mm thick Samarium Cobalt Magnet - 0.17kg Pull
  • 3mm dia x 2mm thick Samarium Cobalt Magnet - 0.19kg Pull
  • 3mm dia x 3mm thick Samarium Cobalt Magnet - 0.2kg Pull
  • 4mm dia x 2mm thick Samarium Cobalt Magnet - 0.32kg Pull
  • 4mm dia x 5mm thick Samarium Cobalt Magnet - 0.44kg Pull
  • 5mm dia x 2mm thick Samarium Cobalt Magnet - 0.34kg Pull
  • 5mm dia x 10mm thick Samarium Cobalt Magnet - 0.68kg Pull
  • 6mm dia x 3mm thick Samarium Cobalt Magnet - 0.7kg Pull
  • 6mm dia x 4mm thick Diametrically Magnetised Samarium Cobalt Magnet - 0.3kg Pull
  • 6mm dia x 6mm thick Samarium Cobalt Magnet - 0.89kg Pull
  • 8mm dia x 2mm thick Samarium Cobalt Magnet - 0.7kg Pull
  • 9mm dia x 3mm thick Samarium Cobalt Magnet - 1kg Pull
  • 10mm dia x 1mm thick Samarium Cobalt Magnet - 0.4kg Pull
  • 10mm dia x 2mm thick Samarium Cobalt Magnet - 0.9kg Pull
  • 10mm dia x 5mm thick Samarium Cobalt Magnet - 2kg Pull
  • 10mm dia x 5mm thick x 3.2mm c/sink Samarium Cobalt Magnet - 1.4kg Pull
  • 10mm dia x 10mm thick Samarium Cobalt Magnet - 2.6kg Pull
  • 10 x 10 x 5mm thick Samarium Cobalt Magnet - 2.3kg Pull
  • 15mm dia x 2mm thick Samarium Cobalt Magnet - 1.4kg Pull
  • 20mm dia x 3mm thick Samarium Cobalt Magnet - 3kg Pull
  • 20 x 6 x 1.5mm thick Samarium Cobalt Magnet - 0.86kg Pull
  • 20mm dia x 10mm thick x 5.2mm c/sink Samarium Cobalt Magnet - 7.1kg Pull
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Samarium cobalt (SmCo) magnets are part of the permanent rare earth family of magnetic materials, alongside the stronger neodymium (NdFeb) magnets. Although samarium cobalt magnets provide approximately two thirds of the strength of neodymium magnets they have significantly greater resistance to corrosion and can withstand much higher temperatures before their performance is affected; making samarium cobalt the magnetic material of choice for particularly demanding applications and harsh environments.

There are two common ranges of grades of samarium cobalt used in modern applications, Sm1Co5 and Sm2Co17. You may also find these grades referred to in shorthand as 1:5 and 2:17, the weaker of the two ranges is 1:5 which includes sub-grades which produce a maximum energy product of 14-24 MGOe (Mega Gauss Oersteds) while the stronger, and more common 1:7 range of grades are capable of producing a maximum energy product between 22 and 32 MGOe.

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