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Samarium Cobalt Disc Magnet Description

Samarium cobalt disc magnets are round coin-shaped samarium cobalt magnets of varying diameters and thicknesses. SmCo is a widely used second-generation high-energy material. Using Samarium and cobalt as its rare earth element, it exhibits high magnetic performance characteristics in energy products and coercive force. There are two compositions of magnets in this family: Sm1Co5 and Sm2Co17. The highest commercially available energy products of Sm2Co17 are in the 30MGOe range.

Samarium Cobalt Disc Magnet Application

SmCo disc magnets can be used for the coreless motor, variable frequency air conditioner, oil industry dewaxing device motor, sensors, computer disc drivers, linear actuators, etc, which have good applications in the low-carbon, and energy-saving.

Stanford Magnets specializes in manufacturing and supplying SmCo disc magnets applied in various industrial applications. We have advanced technology, rich experience, and professional engineering technicians in this field. If you require a specific size, please contact us for a custom SmCo magnet quote.


What are SmCo disc magnets?
SmCo disc magnets are strong permanent magnets made from an alloy of samarium and cobalt, shaped into a flat, circular disc. They are part of the rare-earth magnet family and are known for their high magnetic strength, excellent temperature stability, and corrosion resistance.
How strong are SmCo disc magnets?
While not as strong as the highest grades of Neodymium magnets, SmCo disc magnets offer substantial magnetic strength that is suitable for many applications. Their strength is particularly advantageous in environments where temperature stability and resistance to corrosion are required.
What are the advantages of SmCo disc magnets over other types of magnets?
The main advantages of SmCo disc magnets include their ability to retain magnetic strength at high temperatures (up to 300°C or 572°F for some grades), excellent corrosion resistance without the need for protective coatings, and stable performance in harsh environments.
Can SmCo disc magnets operate at high temperatures?
Yes, SmCo disc magnets are known for their exceptional temperature stability and can operate at temperatures up to 300°C (572°F), making them ideal for applications in high-temperature environments.
Do SmCo disc magnets need protective coatings?
No, SmCo disc magnets generally do not require protective coatings due to their inherent corrosion resistance. This makes them suitable for use in corrosive environments without additional protection.
What applications are SmCo disc magnets used in?
SmCo disc magnets are used in a variety of applications, including sensors and actuators, aerospace and defense equipment, medical devices that require high-temperature operation, and industrial machinery exposed to high temperatures or corrosive conditions.
Are SmCo disc magnets brittle?
Yes, like other rare-earth magnets, SmCo disc magnets are brittle and can chip or break if subjected to harsh mechanical stress. Careful handling is recommended to prevent damage.
How do SmCo disc magnets compare to Neodymium (NdFeB) magnets?
SmCo disc magnets offer better temperature stability and corrosion resistance than Neodymium magnets, making them more suitable for high-temperature and harsh environmental conditions. However, Neodymium magnets typically provide higher magnetic strength at room temperature and are more cost-effective.
How are SmCo disc magnets manufactured?
The manufacturing process involves melting the raw materials, casting the alloy, pulverizing it into a fine powder, pressing the powder in a magnetic field, sintering, machining the magnet to its final disc shape, and then magnetizing it to achieve its full magnetic potential.
What factors should I consider when choosing a SmCo disc magnet for my application?
Consider the required magnetic strength, operating temperature range, exposure to corrosive elements, size and shape constraints, and budget. SmCo disc magnets are particularly beneficial for applications that demand stable magnetic performance in high-temperature or corrosive environments.

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