Samarium Cobalt Magnets Banner

Samarium Cobalt Magnets

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

Back to All Materials

Samarium Cobalt Magnets, developed in the 1960’s 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. They are slightly less powerful than NdFeB magnets, however they are extremely resistant to demagnetization and have the lowest reversible temperature coefficients of all magnets. 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. Most common usage for these materials is in the aerospace and medical industries.

SmCo Magnet Materials

Alliance SmCo GradesRemanent
Induction
Coercive
Force
Intrinsic
Coercive Force
Maximum
Energy Product
Reversible
Temperature Coefficients
Continuous
Working Temp.
Br (Gauss)Hc
(Oe)
Hci
(Oe)
(BH)max
(MGOe)
α
Br
ß
Hci
Tw
(°C)
MinMaxMinMaxMinMaxMinMax%/°C%/°CMax
S-188,0009,0007,8008,80025,00035,00016.020.0-0.05-0.04250
S-209,0009,5008,5009,30018,00025,00019.021.0-0.05-0.04250
S-229,50010,0009,0009,50015,00023,00021.023.0-0.05-0.04250
S-18T8,5009,5008,0009,00020,00030,00016.020.0-0.01-0.04350
S-22T9,50010,0008,5009,50020,00030,00020.024.0-0.01-0.04350
S-22L9,50010,0006,0008,0006,2009,00020.024.0-0.03-0.04250
S-22H9,50010,0007,0009,5008,00015,00020.024.0-0.03-0.04250
S-22U9,50010,0009,00010,00025,00035,00020.024.0-0.03-0.04300
S-26L10,00010,8006,0008,0006,2009,00024.028.0-0.03-0.04250
S-26H10,00010,8007,00010,5008,00015,00024.028.0-0.03-0.04250
S-26U10,00010,8009,50010,50025,00035,00024.028.0-0.03-0.04300
S-28L10,40011,0006,0008,0006,2009,00026.030.0-0.03-0.04250
S-28H10,40011,0007,00010,5008,00015,00026.030.0-0.03-0.04250
S-28U10,40011,0009,50010,50025,00035,00026.030.0-0.03-0.04300
S-30L10,80011,2006,0008,0006,2009,00028.031.0-0.03-0.04250
S-30H10,80011,2007,00010,5008,00015,00028.031.0-0.03-0.04250
S-30U10,80011,20010,00010,80025,00035,00028.031.0-0.03-0.04300
S-3211,00011,6007,00010,5008,00015,00030.033.0-0.03-0.04250
S-3311,30012,1008,50011,50010,00022,00029.034.0-0.04-0.25250
Alliance SmCo GradesDensityTensile
Strength
Modulus
of Elasticity
Thermal
Expansion Coefficient /°C
Electrical ResistivityCurie Temperature
g/cm3lbs/in3psiPa
x 106
psi
x 106
Pa
x 109
ǁ
to M

to M
Ω-cm x10-6@ 20 C°C 
S-188.40.3036,00041231596.0x10-61.3x10-553.0750
S-208.40.3036,00041231596.0x10-61.3x10-553.0750
S-228.40.3036,00041231596.0x10-61.3x10-553.0750
S-18T8.40.3036,00041231596.0x10-61.3x10-553.0750
S-22T8.40.3035,00035171178.0x10-61.1x10-586.0750
S-22L8.40.3035,00035171178.0x10-61.1x10-586.0825
S-22H8.40.3035,00035171178.0x10-61.1x10-586.0825
S-22U8.40.3035,00035171178.0x10-61.1x10-586.0825
S-26L8.40.3035,00035171178.0x10-61.1x10-586.0825
S-26H8.40.3035,00035171178.0x10-61.1x10-586.0825
S-26U8.40.3035,00035171178.0x10-61.1x10-586.0825
S-28L8.40.3035,00035171178.0x10-61.1x10-586.0825
S-28H8.40.3035,00035171178.0x10-61.1x10-586.0825
S-28U8.40.3035,00035171178.0x10-61.1x10-586.0825
S-30L8.40.3035,00035171178.0x10-61.1x10-586.0825
S-30H8.40.3035,00035171178.0x10-61.1x10-586.0825
S-30U8.40.3035,00035171178.0x10-61.1x10-586.0825
S-328.40.3035,00035171178.0x10-61.1x10-586.0825
S-338.40.3035,00035171178.0x10-61.1x10-586.0825

SmCo Magnets Grade Comparison

SmCo Magnets Curve Comparisons

© 2021 Alliance LLC. IQS Directory Trusted SupplierIQS Directory Trusted Supplier
Alliance LLC
1450 Clark Drive,
Valparaiso, IN 46385
HQ tel: (219) 548-3799
sales@allianceorg.com
sitemap