Smco Magnet

Smco Magnet

Description:
Samarium Cobalt (SmCo) magnet is made primarily from rare earth metal samarium and strategic metal cobalt, with iron, copper, zirconium and praseodymium.

It has high performance and low temperature coefficient, the maximum working temperature is up to 350℃. It doesn’t need to be coated because it is difficult to be eroded and oxidized, widely used in motor, sensor, meter, electronic, watch, automobile, aviation, aerospace and other applications.

There are two alloy series for SmCo magnets: SmCo5 and Sm2Co17.

Production Process Flowchart:

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Magnetic Properties:

 

Grade Alloy Series Br Hcb Hcj (BH)max
mT Gs kA/m Oe kA/m Oe kJ/m3 MGOe
XG16 SmCo5 770-860 7700-8600 613-716 7700-9000 ≥1194 ≥15000 120-143 15-18
XG16H 770-860 7700-8600 613-716 7700-9000 ≥1592 ≥20000 120-143 15-18
XG18 810-920 8100-9200 637-756 8000-9500 ≥1194 ≥15000 135-159 17-20
XG18H 810-920 8100-9200 637-756 8000-9500 ≥1592 ≥20000 135-159 17-20
XG20 850-950 8500-9500 637-756 8000-9500 ≥1194 ≥15000 151-175 19-22
XG20H 850-950 8500-9500 637-756 8000-9500 ≥1592 ≥20000 151-175 19-22
XG22 890-1000 8900-10000 661-772 8300-9700 ≥1194 ≥15000 167-191 21-24
XG22H 890-1000 8900-10000 661-772 8300-9700 ≥1592 ≥20000 167-191 21-24
XGS24M Sm2Co17 920-1040 9200-10400 318-788 4000-9900 ≥398 ≥5000 175-199 22-25
XGS24 920-1040 9200-10400 661-796 8300-10000 ≥1194 ≥15000 175-199 22-25
XGS24H 920-1040 9200-10400 661-804 8300-10100 ≥1990 ≥25000 175-199 22-25
XGS26M 1000-1060 10000-10600 318-796 4000-10000 ≥398 ≥5000 191-215 24-27
XGS26 1000-1060 10000-10600 677-820 8500-10300 ≥1194 ≥15000 191-215 24-27
XGS26H 1000-1060 10000-10600 677-820 8500-10300 ≥1990 ≥25000 191-215 24-27
XGS28M 1040-1100 10400-11000 318-804 4000-10100 ≥398 ≥5000 207-231 26-29
XGS28 1040-1100 10400-11000 677-820 8500-10300 ≥1194 ≥15000 207-231 26-29
XGS28H 1040-1100 10400-11000 677-820 8500-10300 ≥1990 ≥25000 207-231 26-29
XGS30M 1070-1120 10700-11200 318-796 4000-10000 ≥398 ≥5000 223-247 28-31
XGS30 1070-1120 10700-11200 700-828 8800-10400 ≥1194 ≥15000 223-247 28-31
XGS30H 1070-1120 10700-11200 700-828 8800-10400 ≥1990 ≥25000 223-247 28-31
XGS32M 1090-1150 10900-11500 318-804 4000-10100 ≥398 ≥5000 231-255 29-32


Physical And Manufacturing Characteristics:

 

Curie Temperature (°C) 700-800
Maximum Operating Temperature (°C) 250 for SmCo5, 350 for Sm2Co17
Resistivity (µ ohm.cm) 50-90
Hardness (Hv) 450-600
Density (g/cm3) 8.0-8.5
Relative Recoil Permeability (µrec) 1.1
Saturation Field Strength, kOe (kA/m) 37.5 (3000)
Temperature Coefficient of Br (%/°C) -0.05 ~ -0.03
Temperature Coefficient of iHc (%/°C) -0.25 ~ -0.19


Application:

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