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Applications of Samarium Cobalt Magnets
Computer disc drives
Sensors
Traveling wave tubes
Linear actuators
Satellite systems
Motors where temporary stability is vital
Attributes of Samarium Cobalt Material
High resistance to demagnetization
High energy (magnetic strength is strong for its size)
Good temperature stability
Expensive material (cobalt is market price sensitive)
Typical Magnetic Performance Range for Sintered SmCo
Grade | Br | Hcb | Hcj | BHmax | Density | Tw Max | Remark | ||||
kGs | mT | kA/m | kOe | kA/m | kOe | KJ/m3 | MGOe | g/cm3 | ? | ||
SmCo16 | 8.3 | 830 | 640 | 8.0 | 1430 | 18.0 | 128 | 16.0 | 8.3 | 250 | 1:5 |
SmCo18 | 8.8 | 880 | 680 | 8.5 | 1430 | 18.0 | 144 | 18.0 | 8.3 | 250 | |
SmCo20 | 9.2 | 920 | 700 | 8.7 | 1430 | 18.0 | 160 | 20.0 | 8.3 | 250 | |
SmCo22 | 9.4 | 940 | 730 | 9.1 | 1450 | 18.0 | 176 | 22.0 | 8.3 | 250 | |
SmCo24 | 9.8 | 980 | 750 | 9.4 | 1450 | 18.0 | 192 | 24.0 | 8.3 | 250 | |
SmCo24 | 9.8 | 980 | 730 | 9.1 | 1450 | 18.0 | 192 | 24.0 | 8.4 | 300 | 2:17 |
SmCo26 | 10.3 | 1030 | 760 | 9.5 | 1450 | 18.0 | 208 | 26.0 | 8.4 | 300 | |
SmCo28 | 10.5 | 1050 | 780 | 9.7 | 1450 | 18.5 | 224 | 28.0 | 8.4 | 300 | |
SmCo30 | 11.0 | 1100 | 810 | 10.1 | 1450 | 18.5 | 240 | 30.0 | 8.4 | 300 | |
SmCo26M | 10.3 | 1030 | 760 | 9.5 | 1100 | 15.0 | 208 | 26.0 | 8.4 | 300 | |
SmCo28M | 10.5 | 1050 | 780 | 9.7 | 1100 | 15.0 | 224 | 28.0 | 8.4 | 300 | |
SmCo30M | 11.0 | 1100 | 810 | 10.1 | 1100 | 15.0 | 240 | 30.0 | 8.4 | 300 | |
SmCo28L | 10.5 | 1050 | 550 | 6.9 | 700 | 8.0 | 224 | 28.0 | 8.4 | 250 | |
SmCo30L | 11.0 | 1100 | 550 | 6.9 | 700 | 8.0 | 240 | 30.0 | 8.4 | 250 | |
SmCo24H | 10.0 | 1000 | 720 | 9.0 | 2000 | 25.0 | 192 | 24.0 | 8.4 | 350 | |
SmCo26H | 10.3 | 1030 | 760 | 9.5 | 2000 | 25.0 | 208 | 26.0 | 8.4 | 350 | |
SmCo28H | 10.5 | 1050 | 770 | 9.6 | 2000 | 25.0 | 224 | 28.0 | 8.4 | 350 | |
SmCo30H | 10.8 | 1080 | 810 | 10.1 | 2000 | 25.0 | 240 | 30.0 | 8.4 | 350 |
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