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Samarium Cobalt Magnets

Samarium Cobalt Magnets

Samarium Cobalt Magnets, also known as SmCo, are slightly less powerful than NdFeB magnets. Aerospace and Medical device design engineers select Samarium Cobalt Magnets because SmCo magnets are extremely resistant to demagnetization and have the lowest reversible temperature coefficients of all the permanent magnets.

At Alliance, we supply the highest quality Samarium Cobalt Magnets and magnetic assemblies. From design and prototyping to high volume manufacturing, you can count on us to be your trusted permanent magnetic materials supplier. Contact us now! Call 219-548-3799 or Email sales@allianceorg.com

For product technical information, pricing and availability contact our sales department at:
(219) 548-3799
sales@allianceorg.com

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About Samarium Cobalt Magnets:

Developed in the 1960’s SmCo Magnets are still commonly used today because of their excellent characteristics at very high temperatures. SmCo5 and Sm2Co17 are the two main compositions of this material.

Because of the high Cobalt content, they are costly and their prices tend to be volatile. Plating is typically not required for corrosion protection, however in certain applications they are plated to limit chipping.

SmCo Magnet Materials

Samarium Cobalt Magnet Grades

Alliance SmCo Grades Density Tensile
Strength
Modulus
of Elasticity
Thermal
Expansion Coefficient /°C
Electrical Resistivity Curie Temperature
g/cm3 lbs/in3 psi Pa
x 106
psi
x 106
Pa
x 109
ǁ
to M

to M
Ω-cm x10-6@ 20 C °C 
S-18 8.4 0.303 6,000 41 23 159 6.0x10-6 1.3x10-5 53.0 750
S-20 8.4 0.303 6,000 41 23 159 6.0x10-6 1.3x10-5 53.0 750
S-22 8.4 0.303 6,000 41 23 159 6.0x10-6 1.3x10-5 53.0 750
S-18T 8.4 0.303 6,000 41 23 159 6.0x10-6 1.3x10-5 53.0 750
S-22T 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 750
S-22L 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-22H 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-22U 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-26L 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-26H 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-26U 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-28L 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-28H 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-28U 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-30L 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-30H 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-30U 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-32 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825
S-33 8.4 0.303 5,000 35 17 117 8.0x10-6 1.1x10-5 86.0 825

SmCo Magnets Grade Comparison

SmCo Magnets Curve Comparisons

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