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Sintered SmCo Magnets

Sintered SmCo MagnetsSamarium Cobalt permanent magnet is widely used second generation high energy material. Using Samarium and Cobalt as its rare earth element, it exhibits high magnetic performance characteristics in energy product and coercive force. There are two compositions of magnets in this family: Sm1Co5 and Sm2Co17. The highest commercially available energy products of Sm2Co 17 are in the 30MGOe range.

Typical Magnetic Properties of Sintered SmCo Magnets

Grade Max. Energy Product Remanence Coercive Force Rev. Temp. Coeff. Working Temp. Density
(BH)max Br Hc Hci Bd Hd Tw D
MGOe kJ/m3 kG mT kOe kA/m kOe kA/m %/C %/C C g/cm3
SmCo5 16A 16.0 130.0 8.2 820 7.5 600 >16.0 >1270 -0.05 0.25 250 8.4
SmCo5 16B 16.0 130.0 8.2 820 7.5 600 >20.0 >1590 -0.05 0.25 250 8.4
SmCo5 18A 18.0 146.3 8.7 870 8.2 656 >16.0 >1272 -0.05 0.25 250 8.4
SmCo5 18B 18.0 146.3 8.7 870 8.2 656 >20.0 >1590 -0.05 0.25 250 8.4
SmCo5 20A 20.0 162.5 9.0 900 8.6 690 >16.0 >1272 -0.05 0.25 250 8.4
SmCo5 20B 20.0 162.5 9.0 900 8.6 690 >20.0 >1590 -0.05 0.25 250 8.4
SmCo5 22A 22.0 178.8 9.5 950 9.1 728 >16.0 >1272 -0.05 0.25 250 8.4
SmCo5 22B 22.0 178.8 9.5 950 9.1 728 >20.0 >1590 -0.05 0.25 250 8.4
Sm2Co17 24 24.0 195.0 10.0 1000 9.5 760 >20.0 >1590 -0.03 0.23 300 8.3
Sm2Co17 26A 26.0 211.3 10.6 1060 9.8 784 >16.0 >1272 -0.03 0.23 300 8.3
Sm2Co17 26B 26.0 211.3 10.6 1060 9.8 784 >20.0 >1590 -0.03 0.23 300 8.3
Sm2Co17 26H 26.0 211.3 10.6 1060 9.8 784 >26.0 >2067 -0.03 0.23 300 8.3
Sm2Co1728A 28.0 227.5 10.9 1090 10.0 800 >16.0 >1272 -0.03 0.23 300 8.3
Sm2Co17 28B 28.0 227.5 10.9 1090 10.0 800 >20.0 >1590 -0.03 0.23 300 8.3
Sm2Co17 28H 28.0 227.5 10.9 1090 10.0 800 >26.0 >2067 -0.03 0.23 300 8.3
Sm2Co17 30A 30.0 243.8 11.0 1100 10.2 816 >16.0 >1272 -0.03 0.23 300 8.3
Sm2Co17 30B 30.0 243.8 11.2 1120 10.2 816 >20.0 >1590 -0.03 0.23 300 8.3
Sm2Co17 32 31.0 251.8 11.5 1150 10.0 800 >15.0 >1192 -0.03 0.23 300 8.3
Sm2Co17 25H 25.0 203.2 10.5 1050 9.7 776 >35.0 >2782 -0.03 0.23 375 8.3

Note: Special properties can be achieved with custom method.

Physical Characteristics of Sintered SmCo Magnets

Hardness HV 10
Compression Strength 300 - 900 N/mm2
Bending Strength 120 N/mm2
Modulus 1.2-2.0x104 N/mm3
Electrical Resistance at 20C >0.5 ohm-cm
Specific Heat Capacity 370 J/(kg.C)

Note:
1. The minimum dimension is 0.079" Diameter.
2. All shapes and properties can be supplied to meet customers' requirements.

Typical Characteristic Curve for SmCo permanent magnet

SmCo permanent magnet

SmCo magnets