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/m± ℃
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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