This is the sintered SmCo magnet, it is belong to rare earth permanent magnet. It was found at 1970's.
SmCo magnet is also named with SmCo magnetic steel, SmCo permanent magnet, SmCo permanent magnetic iron and rare earth cobalt permanent magnet. It is a high performance, low temperature coefficient permanent magnet with its high working temperature-350 degree centigrade. When working above 180 degree centigrade, its maximum energy prodcut BH and steady temperature are superior than NdFeB magnetic materials. It needn't to be coated because it is difficult to be eroded and oxidized.
SmCo magnet is also named with SmCo magnetic steel, SmCo permanent magnet, SmCo permanent magnetic iron and rare earth cobalt permanent magnet. It is a high performance, low temperature coefficient permanent magnet with its high working temperature-350 degree centigrade. When working above 180 degree centigrade, its maximum energy prodcut BH and steady temperature are superior than NdFeB magnetic materials. It needn't to be coated because it is difficult to be eroded and oxidized.
We can process the SmCo magnet accordign to customers' dimension, shapes, etc.
The demagnetized curve of sintered SmCo magnet
Magnetic Characteristics of Sintered SmCo magnet:
Materia | Grade | Max Engery product | Remanence | Coercive Force | Intrinsic Coercive Force | Temp Coeff | Density | Curie Temp | Working Temp |
(BH)max | Br | Hcb | Hcj | αBr | D | Tc | Tw | ||
KJ/m3(MGOe) | mT(KGs) | KA/m(KOe) | KA/m(KOe) | %/ ℃ | g/cm3 | ℃ | ℃ | ||
Sm1Co5 | 18A | 143(18) | 850(8.5) | 597(7.5) | 1273(16.0) | -0.04 | 8.2 | 740 | 250 |
18B | 143(18) | 850(8.5) | 660(8.3) | 1600(20.0) | |||||
19 | 150(19) | 900(9.0) | 690(8.7) | 900(11.3) | |||||
20A | 159(20) | 900(9.0) | 613(7.7) | 1989(25.0) | |||||
20B | 160(20) | 900(9.0) | 660(8.3) | 900(11.3) | |||||
20C | 160(20) | 900(9.0) | 680(8.5) | 1270(16.0) | |||||
21 | 165(21) | 920(9.2) | 710(8.9) | 1600(20.0) | |||||
22A | 175(22) | 940(9.4) | 700(8.8) | 900(11.3) | |||||
22B | 180(22) | 950(9.5) | 720(9.0) | 1270(16.0) | |||||
Sm2Co17 | 24C | 191(24) | 1000(10.0) | 356(4.5) | 413(5.2) | -0.03 | 8.3 | 820 | 350 |
24D | 190(24) | 1000(10.0) | 480(6.0) | 560(7.0) | |||||
24E | 190(24) | 1010(10.1) | 675(8.5) | 1300(16.0) | |||||
24F | 190(24) | 980(9.8) | 710(8.9) | 900(11.3) | |||||
24G | 190(24) | 1000(10.0) | 740(9.3) | 2070(26.0) | |||||
24H | 195(24) | 1020(10.2) | 748(9.4) | 1433(18.0) | |||||
25 | 205(26) | 1040(10.4) | 700(8.8) | 1300(16.0) | |||||
26A | 205(26) | 1020(10.2) | 420(5.2) | 440(5.5) | |||||
26B | 207(26) | 1030(10.3) | 716(9.0) | 1432(18.0) | |||||
26C | 210(26) | 1020(10.2) | 740(9.3) | 900(11.3) | |||||
26D | 205(26) | 1050(10.5) | 756(9.5) | 1433(18.0) | |||||
26E | 210(26) | 1070(10.7) | 780(9.8) | 2070(26.0) | |||||
28A | 220(28) | 1080(10.8) | 420(5.2) | 440(5.5) | |||||
28B | 223(28) | 1100(11.0) | 438(5.5) | 454(5.7) | |||||
28C | 220(28) | 1090(10.9) | 520(6.5) | 560(7.0) | |||||
28D | 224(28) | 1110(11.1) | 640(8.0) | 1040(13.0) | |||||
28E | 225(28) | 1060(10.6) | 760(9.6) | 900(11.3) | |||||
28F | 220(28) | 1080(10.8) | 780(9.8) | 955(18.0) | |||||
28G | 220(28) | 1100(11.0) | 820(10.3) | 2070(26.0) | |||||
30A | 240(30) | 1100(11.0) | 780(9.8) | 900(11.3) |
The demagnetized curve of sintered SmCo magnet