Samarium Cobalt (SmCo) arc magnets are a type of rare earth magnet made from an alloy of samarium and cobalt. They are known for their exceptional magnetic strength and remarkable resistance to high temperatures, making them suitable for applications where performance and reliability are critical even under extreme conditions. SmCo arc magnets typically come in a curved shape, resembling a segment of a circle, which makes them ideal for use in motors and generators where a continuous magnetic field is needed around a rotational axis. These magnets maintain their magnetic properties up to temperatures of around 300 degrees Celsius and are also highly resistant to corrosion, though they can be brittle and prone to chipping or cracking. Their strength and durability make them valuable in aerospace, military, and industrial sectors.