SmCo Ring Magnets

Samarium cobalt ring magnets, resembling disk or cylinder magnets, feature a central flat hole. A widely used second-generation high-performance rare earth magnet, Samarium Cobalt exhibits exceptional magnetic properties in terms of energy product and coercivity.

We offer customizable rare earth  smco ring magnets, tailoring them to optimize performance and cost within the 16 to 33 MGOe range and temperature capabilities reaching up to 350°C/662°F.

Samarium Cobalt Ring Magnets – Ideal for High-Temperature Environments

Samarium Cobalt ring magnets, also known as SmCo magnetic rings, outperform neodymium magnets in high-temperature settings (above 200 degrees). SmCo5 operates up to 250 degrees, while SmCo2:17 excels up to 350 degrees. Ring smco magnets, another rare earth magnet, find applications in aerospace, automotive, and military fields. While weaker than NdFeB at room temperature, SmCo thrives in extreme cold and hot conditions, boasting high coercivity—an ideal choice for high-temperature motor applications.

Samarium Cobalt Magnet Alloys: Unveiling the Strength of Sm1Co5 and Sm2Co17 Varieties

Samarium Cobalt magnets come in two alloy varieties: Sm1Co5 (SmCo1:5) and the more commonly used and stronger Sm2Co17 (SmCo2:17), with SmCo26 being the most popular. Sm1Co5, lacking iron (Fe), exhibits excellent corrosion resistance. Sm2Co17 contains additional elements like Cu, Hf, and/or Zr, sometimes including Pr and Fe. The low free iron content in Sm2Co17 implies slight surface corrosion in water, but it's generally considered corrosion-resistant (far superior to NdFeB). A simple NiCuNi coating addresses any corrosion risks in most applications.

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