SmCo1:5 magnets are called SmCo5 magnets as well. It is a kind of China rare earth magnet material which is made by a ratio of Samarium, Cobalt or a part of praseodymium replaces Samarium by process of melting, crushing, molding and sintering. The range of maximum magnetic energy is 16 to 25MGOe and the maximum operating temperature is 250 ℃. Its maximum magnetic energy is lower than that of Sm2Co17 permanent magnets . However, their mechanical property and ductility is better than that of Sm2Co17 magnets. They are easier in machining and less brittle in using. Herewith, Samarium cobalt magnets 1:5 are more suitable to be produced into the shapes which can’t be made by China Sm2Co17 material. For example, ultra thin disc, rectangle, ring and various complicated shapes.
Furthermore, the magnetic fields of magnetizing of SmCo5 can be smaller than that of 2:17 Samarium cobalt magnets. Generally, a magnetic field of 40,000 Gs is enough for saturation magnetization, while 60,000 GS or higher magnetic field is required for 2:17 SmCo magnets . Rare earth elements in 1:5 Samarium cobalt magnets formula is as high as 40%, so its price is much higher than Sm2Co17.
The users can choose SmCo5 or Sm2Co17 rare earth permanent magnets reasonably according to their own usage conditions.
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