Magnetic Materials / Rare Earth Magnets
Samarium Cobalt Magnets
High-Performance Magnets for Extreme Environments
Samarium Cobalt (SmCo) magnets are high-strength permanent magnets engineered to deliver exceptional magnetic performance, even in extreme temperature conditions. Developed in the 1970s, these advanced magnets are created by fusing powdered samarium and cobalt under heat, resulting in a material that can produce magnetic fields up to 50 times stronger than magnetite. Unlike some other rare earth magnets, Samarium Cobalt (SmCo) magnets offer superior thermal stability, making them ideal for applications requiring high performance at elevated temperatures.
Composition & Properties
Samarium Cobalt (SmCo) magnets are composed primarily of samarium and cobalt, with small amounts of iron, copper, zirconium, and hafnium to enhance their properties. The majority of the material is cobalt, giving Samarium Cobalt (SmCo) magnets their unique combination of high magnetic strength and exceptional temperature resistance.
Key characteristics of SmCo magnets include:
High Curie Temperature: More thermally stable than Neodymium Iron Boron (NdFeB) magnets, making them ideal for high-temperature environments.
Corrosion Resistance: Unlike Neodymium Iron Boron (NdFeB) magnets, Samarium Cobalt (SmCo) magnets are naturally resistant to oxidation and do not require additional coatings.
Non-Calibratable: While they excel in high-temperature applications, Samarium Cobalt (SmCo) magnets cannot be recalibrated once magnetized.
Higher Cost: Due to the rarity of samarium and the complex manufacturing process, Samarium Cobalt (SmCo) magnets are more expensive than other rare earth magnets.
Applications of Samarium Cobalt Magnets
Samarium Cobalt (SmCo) magnets are the preferred choice for industries requiring high-temperature resistance, strong magnetic fields, and long-term stability. Common applications include:
- Satellites
- Propulsion Systems
- Avionics
- Radar Technology
- MRI Machines
- Surgical Tools
- Motors
- Sensors
- High-Precision Diagnostic Equipment
- Satellites
- Propulsion Systems
- Avionics
- Radar Technology
- MRI Machines
- Surgical Tools
- Motors
- Sensors
- High-Precision Diagnostic Equipment
With decades of experience in rare earth magnet production, we provide reliable, precision-engineered solutions tailored to defense, aerospace, medical, and industrial applications. Contact us to learn more about our Samarium Cobalt magnets and how they can enhance your next project.
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