Samaryum Cobalt magnets are sintered magnets composed of samaryum and cobalt powder. Colour hell grey. Density 8.2
▶Magnetic force is optimal when magnet is in contact with a mild steel frame, flat, clean and rather thick. It is lower with allied steels and cast iron (less 30% for cast iron).
▶ It is lower in the presence of an air gap (space between the part to magnetize and the polar face of the magnet).
▶ It is decreasing by 0.08% every degree C (see besides curve). This loss is reversible.
INDUCTION ON SURFACE
▶ The maximum value of induction in surface at 20°C is about 4000 Gauss for SmCo flat pot magnets and magnetic blocks.
▶ This value is decreasing by 0.04% every degree C when temperature is increasing. It is a reversible loss.
▶ These ceramics are very fragile. They must be handled carefully.
RESISTANCE TO CHEMICALS
▶ Samaryum Cobalt magnets must not be put in the proximity of hydrogen and chlorine.
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|▶Samaryum Cobalt magnets have a very high magnetic energy (BH Max).
▶ There are 2 major families : SmCo5 and Sm2Co17.
▶ The usual grade of our magnets is the most performing Sm2Co17 (max. 350°C working temperature).