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Thermal Stability - Low temperature coefficient

Samarium-cobalt (SmCo) magnets are a type of rare earth magnet, known for their great magnetic strength and exceptional thermal stability. These magnets are made from an alloy of samarium and cobalt and were developed in the early 1970s.

SMCO MAGNET by YX Magnetic SA - Key Features:


  1. Maximum block dimensions : Our YX Magnetic blocks can measure up to 130mm x 80mm x 50mm, fully magnetized. The dimension of 50mm indicates the limit for the magnetization direction.

  2. High quality mass production : We are specialized in producing large quantities of YXG-33H magnets. These magnets have a (BH)max varying between 30-33MGOe, ensuring exceptional performance.

  3. Precise magnetic alignment : Our magnets have a magnetic deviation of less than 3 degrees, ensuring precise and consistent magnetic fields.

  4. Advanced Manufacturing for Sm1Co5 Magnets : We are equipped for mass production of multi-pole planar Sm1Co5 magnets, with a magnetization thickness of less than 6mm.

YX MAGNETIC SA - Permanent magnet - SmCo magnet - irregular Magnet.png
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Magnet SmCo1:5

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  1. The maximum range (BH) is 16 to 25 MGOe, the maximum working temperature is 250oC.

  2. The physical characteristics and ductility of SmCo5 are better than those of Sm2Co17. This makes Smco5 slightly easier to machine. 

  3. Compared to the magnetic field, SmCo5 is lower than Sm2Co17, a magnetic field of 40,000 gauss can be saturated.


  1. The maximum range (BH) is 20 to 35MGOe. The maximum working temperature is 350oC.

  2. Sm2Co17 has an extremely low temperature coefficient and preferably anti-causticity. 

  3. There is no need to coat it because it is difficult to erode and oxidize.

Sintered Samarium Cobalt (SM1CO5/SM2CO17) magnets Catalog

Click link to download the full version.

  1. Further qualities or grade on low thermal coefficient magnets, please contact us for more details. 

  2. The maximum operating temperature depends on the magnet's dimensions and its final applications. We recommend keeping a margin of safety in materials selection.

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