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Samarium Cobalt
 

Application introduction
SmCo is also named with SoCo magnetic steel, SmCo permanent magnet, SoCo permanent magnetic iron and rare-earth cobalt permanent magnet. Its a high performance, low temperature coefficient permanent magnet with its high working temperature350 degree centigrade. When working above 180 degree centigrade, its maximum energy product BH and steady temperature are superior than NdFeB magnetic materials. It neednt 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

83

84

Curie Temperature

K

1000

1100

Vickers hardness

MPa

450-500

550-600

compressing strength

MPa

1000

800

Electronic resistivity

.cm

5610-5

8910-5

bending strength

Mpa

150-180

130-150

stretching strength

Mpa

400

350

Hot coefficient of expansion

(10-6/)

6
12

8
11

The above specific numbers help to consult, not to be the judging basis

Magnetic field strength H(min) of sintered SmCo magnetKA/m

Materials

SmCo15

SmCo15

SmCo217

SmCo217

Ce(co,Fe,cu)5

Hcj Scope

HCj1194

HCj1194

HCj1433

HCj1273

HCj800

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

SmCo15

16-25

15-25

-0.05

200-250

Good

SmCo217

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
1Sintered SoCo permanent magnetic materials have the character of brittleness, lacking of the ductility. So it isnt 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
2Sintered 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 wouldnt damage its magnetic specifications, its stability and its anti-degenerated magnetic ability as long as its flaw doesnt affect normal construction or functions.
3Clients 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.
4If 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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