SmCo Magnets Introduction

01. SmCo (Samarium Cobalt) Magnets Profile

Samarium cobalt magnets can work under higher working temperature than neodymium. The cost of SmCo material is the most expensive, so SmCo magnets are recommended only when high temperature working environment is concerned. SmCo permanent magnets characteristics:

1. SmCo permanent magnets have high magnetic energy product and high coercive force. The magnetic performance is much better than Alnico and ferrite permanent magnet. The Max. energy product is up to 239kJ/m3(30MGOe), which is three times of Alnico8 permanent magnet’s and eight times of ferrite permanent magnet’s  (Y40), so the components made of SmCo material could be small, light and stable in property. It is widely applied to electro acoustic & telecommunication apparatus, electric motors, measure meters, peg-top, electronic watch, microwave apparatus, magnetic mechanism, sensor and other static or dynamic magnetic routes.

2. The curie temp. of SmCo permanent magnets is high and its temp. Coeff. is low. They are suitable for the application at 300℃ high temperature.

3. SmCo permanent magnets’ rigidity strength, tensile strength and pressure strength is low, so they are more fragile and easier to crack. The main ingredient of SmCo permanent magnets are metal cobalt(Co≥99.95%), so the price is higher.

4. SmCo magnets have good corrosion resistance performance, therefore generally the products do not need coating or plating.