Samarium Cobalt (SmCo) disc magnets are a type of rare earth magnet made from an alloy of samarium and cobalt. They are known for their high magnetic strength and exceptional thermal stability, maintaining their magnetism in temperatures up to 300 degrees Celsius. SmCo disc magnets are typically round and flat, resembling a coin. These magnets are highly resistant to corrosion and do not require a protective coating, which makes them ideal for use in aerospace, military, and other high-performance applications where reliability and durability under extreme conditions are crucial. Despite being more brittle and expensive than neodymium magnets, their superior temperature resistance and reliability in harsh environments make them a valuable choice for many advanced technological applications.