Samarium cobalt magnet is a magnet made of proportions of samarium, cobalt and other metal rare earth materials. Successfully developed in 1970 with a density of 8.3 g cubic centimeters, the Sm-Co magnet is now the second most powerful magnet (after Nd-Fe-B). They are divided into SmCo5 and Sm2Co17 according to their components (commonly known as 1:5 and 2:17). Samarium cobalt, also known as samarium cobalt 5, SmCo5 its maximum magnetic energy product is lower than 2:17 samarium cobalt magnet, but mechanical properties and ductility than 2:17 slightly better, easier to machine, product use is not like 2:17 samarium cobalt more brittle, so 1:5 samarium cobalt magnet suitable for processing into 2:17 cobalt not easy to process shape specifications. But the 1:5 samarium cobalt magnet formula contains nearly 40% rare earth, so the price is higher than 2:17 samarium cobalt magnet.
Compared with other permanent magnet materials
Advantages: Samarium cobalt has the same advantages as aluminum nickel cobalt in general, not only has excellent high temperature stability (250 degrees (1:5 performance) - 350 degrees (2:17 performance), but also has high corrosion resistance.
Disadvantages: the product is extremely fragile, in addition, the highest remanence and maximum magnetic energy product of domestic production technology products is only about NdFeB N30, plus its raw materials are very scarce, so the price is expensive. These objective reasons lead to the development of SM co industry far less than NdFeB.
The following is the performance table of our samarium cobalt products.