Sintered SmCo magnets include SmCo5 and SmCo17. They have three principal characteristics; Stability, temperature resistance and strong rust-resistance.
They can work at up to 350 deg, are suitable for making high performance permanent magnet motors and some special environment products.
They can work at up to 350 deg, are suitable for making high performance permanent magnet motors and some special environment products.
Magnetic properties of SmCo5 | |||||||||||||
Material | Grade | Remanence | Coercive Force | Intrinsic Coercive Force | Max. | Curie | Max. | Temperature | Temperature | ||||
energy product | Temperature | Operating | Coefficient | Coefficient | |||||||||
Temperature | of Br | of Hc | |||||||||||
Br | Hcb | Hcj | (BH)max | Tc | Tw | ||||||||
SmCo 5 | T | KGs | KA/m | KOe | KA/m | KOe | KJ/m 3 | MGoe | ° C | ° C | %° C | %° C | |
(Smpr)co 5 | YX- | 0.81-0.85 | 8.1- | 620-660 | 7.8- | 1194-1830 | 15-23 | 110-127 | 14-16 | 750 | 250 | -0.05 | -0.3 |
16 | 8.5 | 8.3 | |||||||||||
YX- | 0.85-0.9 | 8.5- | 660-700 | 8.3- | 1194-1830 | 15-23 | 127-143 | 16-18 | 750 | 250 | -0.05 | -0.3 | |
18 | 9 | 8.8 | |||||||||||
YX- | 0.9-0.94 | 9.0- | 680-725 | 8.5-9.1 | 1194-1830 | 15-23 | 150-167 | 19-21 | 750 | 250 | -0.05 | -0.3 | |
20 | 9.4 | ||||||||||||
YX- | 0.92-0.96 | 9.2- | 710-750 | 8.9-9.4 | 1194-1830 | 15-23 | 160-175 | 20-22 | 750 | 250 | -0.05 | -0.3 | |
22 | 9.6 | ||||||||||||
YX- | 0.96-1.0 | 9.6- | 730-770 | 9.2-9.7 | 1194-1830 | 15-23 | 175-190 | 22-24 | 750 | 250 | -0.05 | -0.3 | |
24 | 10 | ||||||||||||
SmCo 5 | YX- | 0.9-0.94 | 9.0- | 680-725 | 8.5-9.1 | 1433-1830 | 18-23 | 143-160 | 18-20 | 750 | 250 | -0.05 | -0.3 |
20s | 9.4 | ||||||||||||
YX- | 0.92-0.96 | 9.2- | 710-750 | 8.9-9.4 | 1433-1830 | 18-23 | 160-175 | 20-22 | 750 | 250 | -0.05 | -0.3 | |
22s | 9.6 | ||||||||||||
Low | LTc | 0.59-0.63 | 5.9- | 460-493 | 5.8-6.2 | 1430-1830 | 18-23 | 68-80 | 8.5-10 | 700 | 250 | Temperature | Temperature |
temperature coefficient | (YX- | 6.3 | Coefficient | ||||||||||
SmCo5 (SmGd)Co 5 | 10) | of Br %° C | |||||||||||
20-100° C | -0.004 | ||||||||||||
100-200° C | -0.021 | ||||||||||||
200-300° C | -0.042 | ||||||||||||
ce(coFecu) 5 | YX- | 0.70-0.74 | 7.0- | 358-390 | 4.5-4.9 | 358-478 | 4.5-6 | 80-103 | 10.0-13 | 450 | 200 | ||
12 | 7.4 | ||||||||||||
Magnetic properties of Sm2Co17 | |||||||||||||
Material | Grade | Remanence | Coercive Force | Intrinsic Coercive Force | Max. | Curie | Max. | Temperature | Temperature | ||||
energy product | Temperature | Operating | Coefficient | Coefficient | |||||||||
Temperature | of Br | of Hc | |||||||||||
Br | Hcb | Hcj | (BH)max | Tc | Tw | ||||||||
Sm2Co17 | YXG- | 0.95-1.02 | 9.5- | 700-750 | 8.7-9.4 | 1990 | 25 | 175-191 | 22-24 | 800 | 350 | -0.03 | -0.2 |
Sm 2 | 24H | 10.2 | |||||||||||
(CoFecuzr)17 | YXG- | 1.02-1.05 | 10.2- | 750-780 | 9.4-9.8 | 1990 | 25 | 191-207 | 24-26 | 800 | 350 | -0.03 | -0.2 |
26H | 10.5 | ||||||||||||
YXG- | 1.03-1.08 | 10.3- | 756-796 | 9.5-10 | 1990 | 25 | 207-220 | 26-28 | 800 | 350 | -0.03 | -0.2 | |
28H | 10.8 | ||||||||||||
YXG- | 1.08-1.10 | 10.8- | 788-835 | 9.9-10.5 | 1990 | 25 | 220-240 | 28-30 | 800 | 350 | -0.03 | -0.2 | |
30H | 11 | ||||||||||||
YXG- | 0.95-1.02 | 9.5- | 700-750 | 8.7-9.4 | 1433 | 18 | 175-191 | 22-24 | 800 | 300 | -0.03 | -0.2 | |
24 | 10.2 | ||||||||||||
YXG- | 1.02-1.05 | 10.2- | 750-780 | 9.4-9.8 | 1433 | 18 | 191-207 | 24-26 | 800 | 300 | -0.03 | -0.2 | |
26 | 10.5 | ||||||||||||
YXG- | 1.03-1.08 | 10.3- | 756-796 | 9.5-10 | 1433 | 18 | 207-220 | 26-28 | 800 | 300 | -0.03 | -0.2 | |
28 | 10.8 | ||||||||||||
YXG- | 1.08-1.10 | 10.8- | 788-835 | 9.9-10.5 | 1433 | 18 | 220-240 | 28-30 | 800 | 300 | -0.03 | -0.2 | |
30 | 11 | ||||||||||||
YXG- | 1.02-1.05 | 10.2- | 750-780 | 9.4-9.8 | 955-1273 | 12.0-16 | 191-207 | 24-26 | 800 | 300 | -0.03 | -0.2 | |
26M | 10.5 | ||||||||||||
YXG- | 1.03-1.08 | 10.3- | 756-796 | 9.5-10.0 | 955-1273 | 12.0-16 | 207-220 | 26-28 | 800 | 300 | -0.03 | -0.2 | |
28M | 10.8 | ||||||||||||
YXG- | 1.08-1.10 | 10.8- | 788-835 | 9.9-10.5 | 955-1273 | 12.0-16 | 220-240 | 28-30 | 800 | 300 | -0.03 | -0.2 | |
30M | 11 | ||||||||||||
YXG- | 1.02-1.08 | 10.2- | 398-445 | 5.0-5.6 | 400-520 | 5.2-6.5 | 207-220 | 26-28 | 800 | 250 | -0.03 | -0.2 | |
28L | 10.8 | ||||||||||||
YXG- | 1.08-1.15 | 10.8- | 398-445 | 5.0-5.6 | 400-520 | 5.2-6.5 | 220-240 | 28-30 | 800 | 250 | -0.03 | -0.2 | |
30L | 11.5 | ||||||||||||
Low | LTC | 0.94-0.98 | 9.4- | 668-715 | 8.4-9.0 | 1194-1591 | 15-20 | 167-183 | 21-23 | 840 | 300 | Temperature | Temperature |
temperature coefficient Sm2Co17 (SmEr) 2 | (YXG- | 9.8 | Coefficient | ||||||||||
(CoTM) 17 | 22) | of Br %° C | |||||||||||
-50-25° C | 0.005 | ||||||||||||
20-100° C | 0.012 | ||||||||||||
100-200° C | 0.006 | ||||||||||||
200-300° C | -0.025 | ||||||||||||
Characteristic comparisons of permanent magnetic materials: | |||||||||||||
Materials | (BH)max | Hcj | Br Tc | (Working temperature)max | Anti-causticity | ||||||||
SmCo1: 5 | 16-25 | 15-25 | -0.05 | 200-250 | Good | ||||||||
SmCo2: 17 | 22-30 | 6.0-30 | -0.03 | 300-350 | Good | ||||||||
NdFeB | 26-52 | 12.0-30 | -0.11 | 80-200 | Bad | ||||||||
Ferrite magnet | 3-4.5 | 3-4.5 | -0.19 | 200-300 | Good | ||||||||
AINiCo | 5.0-10 | 1-1.8 | -0.03 | 450-500 | Excellent |