NdFeB and samarium cobalt are super rare earth permanent magnets. Both are inherently fragile and can suffer catastrophic damage if subjected to severe shocks (i.e. falls). However, this is where the similarities end, when selecting magnet materials for a particular application, our design engineers evaluate the key unique characteristics of each magnet, including: maximum operating temperature; magnetic properties at a given temperature; Samarium cobalt rare earth magnets: high strength, high durability.
Although samarium cobalt magnets are not as powerful as neodymium, samarium cobalt magnets have been widely used in the military, aerospace, marine and automotive industries since the 70s of the 20th century. Applications in these industries are often carried out in challenging environments where samarium cobalt excels.
Without the need for special coatings, samarium cobalt magnets have strong corrosion and oxidation resistance. This includes resistance to salt water corrosion, making this magnet type ideal for marine and offshore applications. In addition, samarium cobalt magnets maintain strong magnetic properties even at temperatures up to 350°C, and once they reach 150°C, their performance will be better than neodymium.
