Samarium cobalt magnets are a member of the rare earth family of magnets in the same way that neodymium magnets are. Rare earth magnets, composed of rare earth elements, boast exceptional strength and are known for being the most powerful magnets in the world. Samarium cobalt magnets are not quite as strong as neodymium magnets, but they are still significantly stronger than magnets made from non-rare earth material, such as ceramic magnets and alnico magnets. In addition to high strength, samarium cobalt magnets offer a superior ability to perform at high temperatures and a superior resistance to corrosion.
Samarium Cobalt Magnets are Resistant to High Temperatures and Resistant to Corrosion
Samarium cobalts have two key traits that make them uniquely suited to use in challenging environments. The first is their resistance to high temperatures. Samarium cobalts perform at temperatures up to 300°C—an incredible 572°F. This makes samarium cobalt magnets ideal for installation in high-temperature environments, such as in motors generating high heat and even in aerospace applications such as fighter jets. In addition to tolerating extreme heat, these magnets are also able to tolerate extreme cold. Samarium magnets maintain their powerful magnetic strength even at temperatures lower than absolute zero, which registers as -273°C or -459°F.
The second unique trait of samarium cobalt magnets is their excellent resistance to corrosion. Unlike neodymium magnets, which are vulnerable to corrosion and always require plating in order to preserve their integrity, samarium cobalts have a natural resistance to corrosion and oxidation. Because of this, samarium cobalts are sought out for applications where there is a high risk of corrosion, such as applications taking place in marine and offshore environments. As a result of their natural resistance to corrosion caused by saltwater and salty ocean air, samarium cobalts are used in tasks such as holding and carrying large, heavy pieces of equipment (including towing other boats), and in ocean fishing to hold lures. Their resistance to corrosion means they can tolerate conditions that other magnetic materials would quickly succumb to, making samarium cobalts a wise investment for harsh environments.
Because samarium cobalts offer a unique resistance to both heat and corrosion, two factors that can be the downfall of other magnets, they are able to bring intense magnetic strength to even the most challenging, inhospitable environments. Samarium cobalts can be utilized effectively in motors, machinery, sensors and pumps, marine applications, high temperature applications, frigid environments, and more. To learn more about samarium cobalt magnets and talk about selecting the best magnet for your application, Contact Us Today.