Customized Sintered SmCo Ring Magnets Item NO. MPCO-SCR series
Material: Smco magnet
Shape: ring
Grade:Smco5,Sm2Co17 etc
Magnetic properties:Hcj,Hcb,BH,Br,BHmax,working temperature
Application:widely used in sensor,speakers,reed switches,motor,rotor,wind turbines/generators,AC/DC motors,drive motors,servo motors etc
Magnetization directions:by Axial or by radial
SmCo Ring Magnet is a common shape of SmCo Rare earth magnets. SmCo Magnets are perfect for high temperature application, as they can work properly at 250-300 °C. Stanford Magnets provide SmCo Ring Magnets for various applications.
Samaryum Cobalt magnets are sintered magnets composed of samaryum and cobalt powder.
Colour hell grey. Density 8.2
HOLDING FORCE
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.
MECHANICAL RESISTANCE
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.
Samaryum Cobalt magnets have a very high magnetic energy (BH Max).
There are 2 major families : SmCo5 and Sm2Co17. samarium cobalt ring magnets
The usual grade of our magnets is the most performing Sm2Co17 (max. 350°C working temperature).
SmCo Magnet Characteristics
| Grade | BR | HcB | HcJ | BH(Max) | Curie temp | Work temp | Alloy series |
| MT Gs | KA/m Oe | KA/m Oe | KJ/m3 Mgoe | ºC | ºC | ||
| SmCo18 | 800 8000 | 640 8000 | 1430 18000 | 144 18 | 750 | 250 | 1:5 |
| SmCo20 | 850 8500 | 640 8000 | 1590 20000 | 160 20 | 750 | 250 | |
| SmCo22 | 900 9000 | 650 8200 | 1430 18000 | 176 22 | 750 | 250 | |
| SmCo24 | 980 9800 | 676 8500 | 1430 18000 | 192 24 | 800 | 300 | 2:17 |
| SmCo26L | 1050 10500 | 410 5150 | 432 5430 | 208 26 | 800 | 300 | |
| SmCo26 | 1000 10000 | 726 9000 | 1194 15000 | 208 26 | 800 | 300 | |
| SmCo26M | 1000 10000 | 716 9000 | 1590 20000 | 208 26 | 800 | 300 | |
| SmCo28 | 1030 10300 | 760 9500 | 1430 18000 | 224 28 | 800 | 300 | |
| SmCo28H | 1030 10300 | 760 9500 | 1590 20000 | 224 28 | 800 | 300 | |
| SmCo30H | 1100 11000 | 480 6000 | 560 7000 | 240 30 | 800 | 300 |
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