Manufacturer and Supplier of Strong Permanent Magnets
Manufacturer and Supplier of Strong Permanent Magnets
Manufacturer and Supplier of Strong Permanent Magnets
Samarium Cobalt Disc Magnets Round SmCo Magnets
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Samarium Cobalt Disc Magnets Round SmCo Magnets
magnets
magnets
magnets

Samarium Cobalt (SmCo) Magnets is also known as SmCo, Rare Earth Cobalt, RE Cobalt, RECo and CoSm. Samarium Cobalt (SmCo) magnets containing two basic elements samarium and cobalt is part of the rare-earth magnet family of permanent magnets along with neodymium magnets, are made by a sintering process and exist in two forms.

According to crystal structure, samarium cobalt magnets include SmCo5 magnets (1st generation of REPMs) and Sm2Co17 magnets (2nd generation of REPMs). Sm1Co5 (SmCo1:5) is the original SmCo alloy and this has a maximum energy product of between 14 and 24 MGOe. Sm2Co17 (SmCo2:17) is the more common used and stronger SmCo alloy with SmCo26 being the most popular variety.


Key Benefits (compared with NdFeB)

Samarium Cobalt (SmCo) magnets are not as strong as the Neodymium (NdFeB) magnets (maximum energy product of between 30 and 50 MGOe) but they have significant advantages so that they are more suitable for certain applications than Neodymium magnets.


Higher temperature stability. The SmCo magnets work over a wider temperature range, have superior temperature coefficients. Curie temperature is around 750 °C 

for Sm1Co5 and 850 °C for Sm2Co17. 

Furthermore, the magnetic properties decrease is rather low by increasing the temperature. The flux output of the Samarium Cobalt (SmCo) magnets is more stable with changes in temperature than NdFeB magnets due to having better temperature coefficients.

High resistance to corrosion. Samarium Cobalt (SmCo) magnets contain less free iron than Neodymium magnets and therefore provide better corrosion resistance than Neodymium magnets.


Application Fields

Samarium cobalt magnets tend to be an ideal first choice in mission critical applications involving elevated temperatures where magnetic strength and stability are critical. They are routinely used in high-performance motors, machinery, pumps, medical devices, magnetic couplings, sensors, generators, high temperature service applications, wide temperature range applications and for use in corrosive (e.g. water, oil) environments, instruments and meters, etc.



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