Application
introduction
¡¡¡¡
SmCo is also named with SoCo magnetic steel, SmCo permanent magnet, SoCo permanent magnetic iron and rare-earth cobalt permanent magnet. It¡¯s a high performance, low temperature coefficient permanent magnet with its high working temperature¡ª350 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. SoCo 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.
Product picture
Physical property
Partial physical property of sintering SmCo magnets |
parameter name |
unit |
SmCo1:5 |
SmCo2:17 |
density |
G/cm3 |
8£®3 |
8£®4 |
Curie Temperature |
K |
1000 |
1100 |
Vickers hardness |
MPa |
450-500 |
550-600 |
compressing strength |
MPa |
1000 |
800 |
Electronic resistivity |
¦¸.cm |
5¡«6¡Á10-5 |
8¡«9¡Á10-5 |
bending strength |
Mpa |
150-180 |
130-150 |
stretching strength |
Mpa |
400 |
350 |
Hot coefficient of expansion |
(10-6/¡æ) |
¡Î6
¡Í12 |
¡Î8
¡Í11 |
The above specific numbers help to consult,
not to be the judging basis
Magnetic field strength H(min) of sintered SmCo magnet£¨KA/m£©
Materials |
SmCo1£º5 |
SmCo1£º5 |
SmCo2£º17 |
SmCo2£º17 |
Ce(co,Fe,cu)5 |
Hcj Scope |
HCj¡Ý1194 |
HCj¡Ü1194 |
HCj¡Ý1433 |
HCj¡Ü1273 |
HCj¡Ü800 |
Magnetic field strength H(min) |
3500 |
2400 |
5000 |
3500 |
1600 |
Agglutinates
generally the samarium cobalt 2: 17 most lowers needs the saturated
magnetizing field
is material itself HCj value 2-3 times
Characteristic comparisons of permanent magnetic materials
Materials |
(BH)max |
iHc |
Br Tc |
(Working temperature)max |
Anti-causticity |
SmCo1£º5 |
16-25 |
15-25 |
-0.05 |
200-250 |
Good |
SmCo2£º17 |
22-30 |
6-30 |
-0.03 |
300-350 |
Good |
NdFeB |
26-52 |
12-30 |
-0.11 |
80-200 |
Bad |
Ferrite magnet |
3-4.5 |
3-4.5 |
-0.19 |
200-300 |
Good |
AINiCo |
5-10 |
1-1.8 |
-0.03 |
450-500 |
Excellent |
Beneficial advices
¡¡¡¡£¨1£©Sintered SoCo permanent magnetic materials have the character of brittleness, lacking of the ductility. So it isn¡¯t suitable for using as structural part when being designed. The physical specifications of SmCo(1:5) is better than SmCo(2:17)¡¯s because SmCo(1:5) is easy to machine while SmCo(2:17) is more brittle. SmCo permanent magnet magnetized must be picked up carefully during the process of assembling, avoiding ironware to prevent absorbing mutually and the magnets broke off, or two slices of magnetic irons cause damage resulted in absorbing together, besides, it will even cause body-hurt
¡¡¡¡£¨2£©Sintered SoCo permanent magnetic materials would make some slight collision in the process of producing, packing and delivering, so there may be have some visual flaw owing to a bit small horn. However, it wouldn¡¯t damage its magnetic specifications, its stability and its anti-degenerated magnetic ability as long as its flaw doesn¡¯t affect normal construction or functions.
¡¡¡¡£¨3£©Clients who require non-magnetized SmCo permanent magnet must be acquaint with self-magnet equipments for the purpose of completely satiate and magnetize our products or codes.
¡¡¡¡£¨4£©If the designed products are in sour alkali or worse applying environments, our company may provide products of Zn, Ni, Gold or wreath oxygen plated. We feel very graceful for your applications. Welcome to fax or make email consultation. We are pleased to help you with all problems of the techniques. We all work hard trying to provide you SmCo permanent magnetic materials with top-quality and low-price.
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