Samarium Cobalt

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As a professional samarium cobalt magnet manufacturer, Leyuan would like to
introduce you samarium cobalt rare earth permanent magnets which come in energy
products from 16MGOe up to 33MGOe. Their high resistance to demagnetizing
influences and excellent thermal stability has ensured Sm-Co as the premium
choice for the most demanding motor applications. In addition to this, the
corrosion resistance is significantly higher than, for example, Nd-Fe-B. It is
still recommended to coat the magnet in acidic conditions. Its corrosion
resistance has also offered a high degree of comfort to those looking to use
magnets in medical applications.

Types of Samarium Cobalt for Sale

Leyuan Samarium Cobalt Products Show 02

Leyuan Samarium Cobalt Products Show 01

The Specification of Samarium Cobalt Magnets

Sintered SmCo Magnet properties
Grade Br Hcb Hcj BH(max) WT
kGs T kOe kA/m kOe kA/m MGOe kJ/m³ ℃
SmCo5 XG16 7.7-8.6 0.77-0.86 7.7-9.0 613-716 15.0-23.0 1194-
1831 15-18 120-143 250
XG16H 7.7-8.6 0.77-0.86 7.7-9.0 613-716 ≥23 ≥1831 15-18
120-143
XG18 8.1-9.2 0.81-0.92 8.0-9.5 637-756 15.0-23.0 1194-
1831 17-20 135-159
XG18H 8.1-9.2 0.81-0.92 8.0-9.5 637-756 ≥23 ≥1831 17-20
135-159
XG20 8.5-9.5 0.85-0.95 8.0-9.5 637-756 15.0-23.0 1194-
1831 19-22 151-175
XG20H 8.5-9.5 0.85-0.95 8.0-9.5 637-756 ≥23 ≥1831 19-22
151-175
XG22 8.9-10.0 0.89-1.00 8.1-9.9 644-787 15.0-23.0
1194-1831 20-23 159-183
XG22H 8.9-10.0 0.89-1.00 8.1-9.9 644-787 ≥23 ≥1831
20-23 159-183
Sm2Co17 XGS24M 9.2-10.4 0.92-1.04 4.0-9.9 318-788 5.0-15.0
398-1194 22-25 175-199 350
XGS24 9.2-10.4 0.92-1.04 8.3-10.0 661-796 15.0-
25.0 1194-1990 22-25 175-199
XGS24H 9.2-10.4 0.92-1.04 8.3-10.1 661-804 ≥25.0
≥1990 22-25 175-199
XGS26M 10-10.6 1.00-1.06 4.0-10.0 318-796 5.0-15.0
398-1194 24-27 191-215
XGS26 10-10.6 1.00-1.06 8.5-10.3 677-820 15.0-25.0
1194-1990 24-27 191-215
XGS26H 10-10.6 1.00-1.06 8.5-10.3 677-820 ≥25.0 ≥1990
24-27 191-215
XGS28M 10.4-11.0 1.04-1.10 4.0-10.1 318-804 5.0-
15.0 398-1194 26-29 207-231
XGS28 10.4-11.0 1.04-1.10 8.5-10.3 677-820 15.0-
25.0 1194-1990 26-29 207-231
XGS28H 10.4-11.0 1.04-1.10 8.5-10.3 677-820 ≥25.0
≥1990 26-29 207-231
XGS30M 10.8-11.2 1.08-1.12 4.0-10.1 318-804 5.0-
15.0 398-1194 28-31 223-247
XGS30 10.8-11.2 1.08-1.12 8.8-10.4 700-828 15.0-
25.0 1194-1990 28-31 223-247
XGS30H 10.8-11.2 1.08-1.12 8.8-10.4 700-828 ≥25.0
≥1990 28-31 223-247
XGS32M 11.0-11.5 1.10-1.15 4.0-10.1 318-804 5.0-
12.0 398-955 29-32 231-255
XGS32 11.0-11.5 1.10-1.15 9.5-10.7 755-850 15.0-
25.0 1194-1990 29-32 231-255
Low temp coeff Sm2Co17 XGS22LT 9.0-9.9 0.90-0.99 8.5-9.5 677-756 ≥15
≥1194 20-23 159-183
XGS24LT 9.2-10.2 0.92-1.02 8.5-9.5 677-756 ≥15 ≥1194
22-25 175-199 350

Its magnetic properties are not too far from Neodymium Iron Boron magnets but,
due to the  cost and strategic value of Cobalt, it never had the commercial
success and diffusion of NdFeB. Being a most powerful neodymium magnet, it is
an intermetallic compound of rare earth metals (samarium) and transition metals
(cobalt). The production process consists in milling, pressing, and sintering
in an inert atmosphere: magnets are then pressed in an oil bath (isostatically)
or in a dye (axially or diametrically). SmCo is processed by grinding with
diamond tools. As mentioned, SmCo can provide high magnetic performances, with
maximum energy production of around 240 KJ/m3: they can be found in two
different grades, Sm1Co5 and Sm2Co17, and each one has its own specific
magnetic behavior (nucleation for the first, pinning in Sm2Co17). Sm2Co17 shows
the highest magnetic performances but, on the opposite side, it is much more
difficult to be magnetized (4000 kA/m) than Sm1Co5 (2000 kA/m). The two
advantages of smco magnet grades versus NdFeB are the corrosion resistance and
the good thermal behavior; Curie temperature is around 750°C for Sm1Co5 and
850°C for Sm2Co17 . Furthermore, the rate of magnetic properties decrease is
rather low by increasing the temperature. Samarium cobalt magnet grades are
best appreciated in military and aerospace industries, as well as in the
electromedical field; they should be preferred when oxidation or thermal needs
become very important. Its industrial applications are similar to the ones of
NdFeB: sensors, loudspeakers, electric motors, instruments, and switches.

As one of the most professional smco magnet manufacturers from China, Leyuan
has the samarium cobalt ring magnets for sale. If you want to know samarium
cobalt magnet price, please contact Leyuan or leave a message through our
website.

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