Smco magnets are the second generation of rare eath permanent magnet. They are mainly divided into two kinds: (15 type) SmCo5 and (217 type) Sm2Co17. Their main characters are high magnetic property and can stand high temperature. They can work under high temperature up to 250-350 centidegrees. Comparing with NdFeB magnet, they are more suitable to be used in various permanent magnetic motors. Besides, it is no need to make them coated because they have very strong anticorrosion.
SmCo Rare Earth Magnets Properties
Materials
Grade
Br (Residual induction)
Hcb (Coercive Force)
Hcj (Intrinsic coercive Force)
(BH)max. Max. Energy Product
Max. Operating Temp.
TC
Curie Temp.
(KGs)
(KOe)
(KOe)
(MGOe)
(c)
(c)
Sm1Co5
YX-16
8.1-8.5
7.8-8.3
15-23
14-16
250
750
Sm1Co5
YX-18
8.5-9.0
8.3-8.8
15-23
16-18
250
750
Sm1Co5
YX-20
9.0-9.4
8.5-9.1
15-23
19-21
250
750
Sm1Co5
YX-22
9.2-9.6
8.9-9.4
15-23
20-22
250
750
Sm1Co5
YX-24
9.6-10
9.2-9.7
15-23
22-24
250
750
Sm1Co5
YX-18s
8.5-9
8.3-8.8
18-25
17-19
250
750
Sm1Co5
YX-20s
9.0-9.4
8.5-9.1
18-25
18-20
250
750
Sm1Co5
YX-22s
9.2-9.6
8.9-9.4
18-25
20-22
250
750
Sm1Co5
LTc(YX-10)
5.9-6.3
5.8-6.2
18-23
8.5-10
250
700
Sm2Co17
YXG-24H
9.5-10.2
8.7-9.4
25
22-24
350
800
Sm2Co17
YXG-26H
10.2-10.5
9.4-9.8
25
24-26
350
800
Sm2Co17
YXG-28H
10.3-10.8
9.5-10
25
26-28
350
800
Sm2Co17
YXG-30H
10.8-11.0
9.9-10.5
25
28-30
350
800
Sm2Co17
YXG-22
9.3-9.7
8.5-9.3
18
20-23
300
800
Sm2Co17
YXG-24
9.5-10.2
8.7-9.4
18
22-24
300
800
Sm2Co17
YXG-26
10.2-10.5
9.4-9.8
18
24-26
300
800
Sm2Co17
YXG-28
10.3--10.8
9.5-10
18
26-28
300
800
Sm2Co17
YXG-30
10.8-11.0
9.9-10.5
25
28-30
300
800
Sm2Co17
YXG-32
11-11.3
10.2-10.6
15
29-32
300
800
Sm2Co17
YXG-26M
10.2-10.5
9.4-9.8
12-16
24-26
300
800
Sm2Co17
YXG-28M
10.3-10.8
9.5-10
12-16
26-28
300
800
Sm2Co17
YXG-30M
10.8-11.0
9.9-10.5
12-16
28-30
300
800
Sm2Co17
YXG-32M
10.8-11.0
9.9-10.5
12-16
29-32
300
800
Sm2Co17
YXG-28L
10.2-10.8
5.2-9.0
5.5-10
26-28
250
800
Sm2Co17
YXG-30L
10.8-11.5
5.2-9.0
5.5-10.0
28-30
250
800
Sm2Co17
YXG-32L
11-11.3
5.2-9.0
5.5-10.0
29-32
250
800
Sm2Co17
LTC(YXG-22)
9.4-9.8
8.4-9.0
15-20
21-23
300
840
Advantages of Smco Magnets
High resistance to demagnetization
High energy (magnetic strength is strong for its size)
Good temperature stability
Surface Treatments
The corrosion resistance of SmCo is considered good . Coatings for corrosion resistance are therefore not generally required for SmCo magnets.However,sometimes we supply SmCo magnets with Ni coating according to customers requirements. Machining
Magnetizing and Handling
SmCo magnets require extremely high magnetizing fields and special consideration must be given to this when designing complex assemblies, if it is intended to magnetize after assembly. SmCo magnets are mechanically very weak, and magnetically very strong. They must therefore be handled very carefully to avoid damage and injury to personnel handling the magnets. Receiving and assembly personnel should be warned about the dangers of handling magnetized SmCo magnets.
Temperature Effects
SmCo magnets can operate at temperatures up to 350C, depending upon the grade and permeance coefficient. Sm2Co17 materials exhibit superior temperature characteristics as compared to the Sm1Co5 types.
Common Applications
High performance motors Magnetic couplings Magnetic separators watches Transducers Speakers Instruments Medical equipments Positional detectors Various magnetism spreading devices Generators Magnetic processors pmagnetic derrick electrical engineering
