Samarium magnets, together with neodymium magnets, are part of the rare earth group and represent the new generation of magnetic materials. It is an alloy of samarium and cobalt that results in a strong permanent magnet. For this same reason, samarium magnets are the second strongest material after neodymium magnets, but with higher working temperatures and greater coercivity.


We have a wide range of products in the samarium magnet family. We manufacture samarium magnets in different sizes and shapes such as blocks, discs and rings, together with the magnetic bases.

Samarium blocksSamarium discsSamarium rings


Below you can find a table that lists the most important qualities and characteristics of samarium magnets. In the table of qualities you can find variables such as: the remanence of the magnets, the coercive force, the working temperatures and the minimum and maximum resistance.


GradeNomenclatureRemanenceForce CoercivityIntrinsic CoercivityMaximum Product EnergyWork temperature
BrbHcIhc force(BH) max
Samarium MagnetsBr max (T)Br min (T)HcB min (kA / m)HcB max (kA / m)HcJ min (kA / m)HcJ max (kA / m)BHmax min (kJ / m³)BHmax max (kJ / m³)Max. Temp. work: (ºC)
SmCo YXG-28HYXG-28HSmCo 207/1991.031.087568121990207220350
SmCo YXG-30HYXG-30HSmCo 220/1991.081.107888351990220240350
SmCo YXG-32HYXG-32HSmCo 230/1991.101.138128601990230255350
SmCo YXG-28YXG-28SmCo 207/1431.031.087568121433207220300
SmCo YXG-30YXG-30SmCo 220/1431.081.107888351433220240300
SmCo YXG-32YXG-32SmCo 230/1431.101.138128601433230255300
SmCo YXG-26MYXG-26MSmCo 191/961.021.056767809551433191207300
SmCo YXG-28MYXG-28MSmCo 207/961.031.086767969551433207220300
SmCo YXG-30MYXG-30MSmCo 220/961.081.106768359551433220240300
SmCo YXG-32MYXG-32MSmCo 230/961.101.136768529551433230255300

Material type

Rare earths





Work temperature

From 0ºC to 350ºC



Strong magnets
High temperature stability
High coercivity


Samarium magnets are magnetic elements obtained by combining raw materials such as samarium and cobalt that belong to the group of rare earths, with excellent behavior against corrosion and oxidation. It also maintains a stability to the magnetic curve thanks to the high Curie temperature. It is a material with very positive coercive values, a factor that favors resistance to demagnetization, together with its high resistance to high temperatures (up to 350ºC) make these magnets indispensable for certain applications.

It is a material with a high hardness and must be handled only with tools that incorporate diamond, to cut or modify the magnet.


The working temperature can condition the use of these samarium magnets, which work up to 350ºC, without presenting problems with oxidation. It also has the peculiarity of being used in temperatures below 0ºC.


The field of use of samarium magnets is very similar to that of neodymium, obtaining a large number of applications. The ability to work at high temperatures and its high energy values ​​provide different uses such as sensors inside ovens, detectors in boilers, accessories in electric motors or simply for needs that require thermal stability. A totally suitable and recommended material for the industrial sector.img_motores_electricoELECTRIC MOTORSimg_pastillas_guitarraELECTRIC GUITAR PICKUPSimg_detectorsDETECTORSART AND DESIGN APPLICATIONSimg_servo_motoresSERVO MOTORSimg_servo_actuadoresACTUATORSimg_sensorsSENSORSimg_generatorsGENERATORS


Like all magnets, it must first go through some production phases, before obtaining the magnetic material prepared for its application.

In the first instance, the raw material is heated in an induction furnace and melted to obtain the material for the alloy.

Next, the alloy in liquid state is poured into a mold and cooled by water, to obtain solid pieces, to later break the pieces and grind them into tiny particles.

As a parallel option to sintering, the powder obtained is combined with a chemical substance, pressed and heated at the same time as we apply a magnetic field to orient all the particles.