Samarium cobalt magnets (SmCo) are composed of samarium, cobalt and iron. They are extremely strong and their shapes are rings, blocks, discs and arc segments etc. They have high energy, high resistence to demagnetization and high working temperature up to 300 degree centigrade and their price is the most expensive in other rare earth magnets.
Applications: Motors, Sensors, Transducers, Generators, Radar, Linear actuators, Satellite systems etc.
Magnetic Property of SmCo magnets
SmCo Physical Properties | | | SmCo5 | Sm2Co17 | Temperature Coefficent of Br(%/°C) | -0.05 | -0.03 | Temperature Coefficent of iHc(%/°C) | -0.3 | -0.2 | Curie Temperature(°C) | 700-750 | 800-850 | Density(g/cm3) | 8.2-8.4 | 8.3-8.5 | Vickers Hardness(HV) | 450-500 | 500-600 | Working Temperature(°C) | 250 | 350 |
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Material | Code | Remanence Br | Coercivity Force | Intrinsic Coercivity | Maximum Energy | Curie | Maximum Operating | | | | | | | | Force | Product Bhm | Temperature | Temperature | | | | Br | bHc | iHc | (BH)max | TC | TW | | | | T | KGs | KA/m | KOe | KA/m | KOe | KJ/m3 | MGOe | °C | °C | Sintered SmCo | | | YX-18 | 0.85-0.9 | 8.5-9.0 | 620-648 | 7.8-8.2 | 1194-1513 | 15-19 | 127-143 | 16-18 | 750 | 250 | SmCo1:5 | YX-20 | 0.92-0.96 | 9.2-9.6 | 653-717 | 8.2-9.0 | 1194-1513 | 15-19 | 150-167 | 19-21 | 750 | 250 | | | YX-24 | 0.96-1.0 | 9.6-10.2 | 730-770 | 9.2-9.7 | 1194-1513 | 15-19 | 175-190 | 22-24 | 750 | 250 | | | | | | | | | | | | | | | | YXG-24 | 0.95-1.02 | 9.5-10.2 | 637-732 | 8.0-9.2 | 1433-1990 | 18-25 | 175-190 | 22-24 | 800 | 350 | smCo2:17 | YXG-26 | 1.02-1.05 | 10.2-10.5 | 748-796 | 9.4-10.0 | 1433-1990 | 18-25 | 195-215 | 24-26 | 800 | 350 | | | YXG-28 | 1.05-0.08 | 10.5-10.8 | 756-796 | 9.5-10.0 | 1433-1831 | 18-25 | 205-220 | 26-28 | 800 | 350 | | | YXG-28B | 1.02-1.10 | 10.2-11.0 | 420 | 5.2-5.6 | 440-520 | 5.5-6.5 | 205-220 | 26-28 | 800 | 350 | | | YXG-30 | 1.08-1.10 | 10.8-11.0 | 780 | 9.8-10.5 | 955-1195 | 18-25 | 220-240 | 28-30 | 800 | 350 | | | YXG-30B | 1.08-1.15 | 10.8-11.5 | 420 | 5.2-5.6 | 440-520 | 5.5-6.5 | 220-240 | 28-30 | 800 | 350 | Bonded SmCo | | | Yb-6 | 0.4 | 4.0 | 280 | 3.5 | 800 | 10 | 30-50 | 4-6 | - | 120 | smCo1:5 | Yb-10 | 0.5 | 5.0 | 320 | 4.0 | 800 | 10 | 50-65 | 6-8 | - | 120 | | | YbG-10 | 0.6 | 6.0 | 360 | 4.5 | 800 | 10 | 65-80 | 8-10 | - | 120 | smCo2:17 | YbG-12 | 0.7 | 7.0 | 400 | 5.0 | 800 | 10 | 85-95 | 10-12 | - | 120 |
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