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| SmCo is also named with SmCo magnetic steel, SmCo permanent magnet, SmCo permanent magnetic iron and rare-earth cobalt permanent magnet. It"s 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 product 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 widely used in motors, watch,transducers, instruments,positional detector,generators,radar communications,medical equipments, various magnetism spreading devices, magnetic processor,electrical engineering and magnetic derrick. |
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| Magnetic Properties of Sintered SmCo Magnets |
|
Grade
|
Remanence
|
Coercivity Force
|
Intrinsic Coercive Force
|
Max. Energy Product
|
|
Br
|
Hcb
|
Hcj
|
（ BH ） max
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|
T
|
kGs
|
kA/m
|
KOe
|
kA/m
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KOe
|
kJ/m3
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MGOe
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Sm2Co17
|
CXG24A
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≥ 0.95
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≥ 9.5
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≥ 677
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≥ 8.5
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≥ 1117
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≥ 14
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175~191
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22~24
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CXG24
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≥ 0.95
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≥ 9.5
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≥ 677
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≥ 8.5
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≥ 1432
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≥ 18
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175~191
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22~24
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CXG24H
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≥ 0.95
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≥ 9.5
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≥ 677
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≥ 8.5
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≥ 1672
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≥ 21
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175~191
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22~24
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CXG26A
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≥ 1
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≥ 10
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≥ 716
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≥ 9
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≥ 1117
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≥ 14
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191~207
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24~26
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CXG26
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≥ 1
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≥ 10
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≥ 716
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≥ 9
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≥ 1432
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≥ 18
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191~207
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24~26
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CXG26H
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≥ 1
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≥ 10
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≥ 716
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≥ 9
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≥ 1672
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≥ 21
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191~207
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24~26
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CXG28
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≥ 1.05
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≥ 10.5
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≥ 756
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≥ 9.5
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≥ 1432
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≥ 18
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207~223
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26~28
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CXG28H
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≥ 1.05
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≥ 10.5
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≥ 756
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≥ 9.5
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≥ 1672
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≥ 21
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207~223
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26~28
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CXG30
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≥ 1.08
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≥ 10.8
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≥ 796
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≥ 10
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≥ 1432
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≥ 18
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223~239
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28~30
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SmCo5 (SmPr)Co5
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CXG18
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≥ 0.8
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≥ 8
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≥ 557
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≥ 7
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≥ 1194
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≥ 15
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127~143
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16~18
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CXG20
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≥ 0.85
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≥ 8.5
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≥ 621
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≥ 7.8
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≥ 1194
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≥ 15
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143~159
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18~20
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CXG22
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≥ 0.9
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≥ 9
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≥ 637
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≥ 8
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≥ 1194
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≥ 15
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159~175
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20~22
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CXG22H
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≥ 0.9
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≥ 9
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≥ 637
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≥ 8
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≥ 1432
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≥ 18
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159~175
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20~22
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CXG24
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≥ 0.95
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≥ 9.5
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≥ 677
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≥ 8.5
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≥ 1194
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≥ 15
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175~191
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22~24
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Special specs
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CXG24M
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≥ 0.97
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≥ 9.7
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≥ 517
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≥ 6.5
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≥ 637
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≥ 8
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175~191
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22~24
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CXG26M
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≥ 1.06
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≥ 10.6
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≥ 597
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≥ 7.5
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≥ 677
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≥ 8.5
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207~223
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26~28
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CXG24S
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≥ 0.95
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≥ 9.5
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≥ 677
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≥ 8.5
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≥ 1117
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≥ 14
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175~191
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22~24
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| Physical Properties of Sintered SmCo Magnets |
| Parameters |
SmCo5 |
Sm2Co17 |
| Temperature Coefficent of Br(%/℃) |
-0.04 |
-0.03 |
| Temperature Coefficent of Hcj(%/℃) |
-0.3 |
-0.2 |
| Curie Temperature(℃) |
700-750 |
800-850 |
| Density (g/cm3) |
8.2-8.4 |
8.3-8.5 |
| Vickers Hardness(HV) |
450-500 |
500-600 |
| Working Temperature(℃) |
250 |
350 |
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| Process of Sintered SmCo Magnets |
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