Home > Products > Rare Earths > Magnets > Samarium Cobalt Bar Magnets

Samarium Cobalt Bar Magnets

Product Code : RE-SmCo-5N-BR

Samarium Cobalt (SmCo) block & bar magnets are strong permanent magnets that offer excellent magnetic stability in high or very low temperature environments. Part of the rare earth magnet family, SmCo block magnets have superior magnetic properties compared to other permanent magnet materials because of their high-resistance to corrosion or demagnetization. From medical devices to high-performance motors and sensor systems, samarium cobalt magnets are ideal for technical applications where magnetic stability is critical in extreme temperatures and space is a limiting factor.

Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.

Product Product Code Purity Size Contact Us
Samarium Cobalt Bar MagnetsRE-SmCo-2N-BR99%Customize
Samarium Cobalt Bar MagnetsRE-SmCo-3N-BR99.9%Customize
Samarium Cobalt Bar MagnetsRE-SmCo-4N-BR99.99%Customize
Samarium Cobalt Bar MagnetsRE-SmCo-5N-BR99.999%Customize

Product Information 

Samarium Cobalt (SmCo) block & bar magnets are strong permanent magnets that offer excellent magnetic stability in high or very low temperature environments. Part of the rare earth magnet family, SmCo block magnets have superior magnetic properties compared to other permanent magnet materials because of their high-resistance to corrosion or demagnetization. From medical devices to high-performance motors and sensor systems, samarium cobalt magnets are ideal for technical applications where magnetic stability is critical in extreme temperatures and space is a limiting factor.


Samarium Cobalt Block Magnets Synonyms

Cobalt-samarium, SmCo, Samarium-cobalt alloy 18, Samarium-cobalt alloy 24, Samarium-cobalt alloy 30, Sm2Co17, SmCo5, 12052-78-7

Samarium Cobalt Bar Specification


Standard Dimensional Tolerances for SmCo Bar & Block Magnets

Here are the standard tolerances for Rare Earth Magnets (SmCo & NdFeB) based on the following dimensions:

+/- 0.004” on length & width dimensions ranging from 0.040” to 1.000”.

+/- 0.008” on length & width dimensions ranging from 1.001” to 2.000”.

+/- 0.012” on length & width dimensions ranging from 2.001” to 3.000”.

*Tolerance on thickness is +/-0.004” regardless of size.


Per your request or drawing

We can customized as required


Properties(Theoretical)

Compound FormulaCo7Sm2
Molecular Weight713.25
AppearanceSolid
Melting PointN/A
Boiling PointN/A
DensityN/A
Solubility in H2ON/A
Exact Mass210.852927
Monoisotopic Mass210.852927


SmCo Magnets Technical Data
Shapes: Blocks & Bars
Magnetization: Magnetized Through Thickness (THK)
Br: 10,500 Gauss
BHmax: 26 MGOe
Hc: 9,200 Oersteds
Hci: 10,000 Oersteds
Max Operating Temperature: 662ºF/350ºC
Curie Temp: 825ºF/441ºC
Density (lb/in3): 0.300


SmCo Magnet Approximate Pull Info

Coatings, rust, rough surfaces, and certain environmental conditions can significantly reduce the pull force. Please be sure to test the actual pull in your actual application. For critical applications, it is suggested that the pull be de-rated by a factor of 2 or more, depending on the severity of a potential failure.


Safety Precautions for Samarium Cobalt Magnets

SmCo magnets are hard, very brittle and high in magnetic strength. They can also snap together with great force, and chip or break if dropped. Therefore, they require careful handling and packing in order to prevent injuries or damages to the magnets.

Material Information

· An alloy compose of SmCo5/ Sm2Co17 produce by powder metallurgical method

· Extremely hard & brittle

· High demagnetization resistance

· Excellent anti-corrosion properties

· More expensive than NdFeB magnets because of limited raw material supply

· Outstanding thermal stability


Applications of Samarium Cobalt Bar magnets 

Samarium Cobalt (SmCo) magnets have excellent temperature stability while maintaining their magnetic properties in extreme temperature conditions. They are well suited for technical applications where high-performance and magnetic strength is required in very low or high temperatures. SmCo magnets are widely used in the automotive, aerospace, medical, military, industrial manufacturing, semiconductor, wind, power, oil and energy industry.


Common applications for SmCo magnets include:

- High Performance Motors

- Actuators

- Generators

- Turbo Machinery

- Electric Motors

- Magnetic Separation Devices

- Traveling Wave Tubes

- Magnetic Couplings

- Magnetic Bearings

- Sensor Systems

- Drilling Equipment

- Wind Turbine Equipment

- Energy Recovery Systems

- Medical Devices

- Missile Components

- Industrial Automation Equipment


Packing of Samarium Cobalt Bar magnets 

Standard Packing:

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

ATTs’ Samarium Cobalt Bar magnets are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers

Linear FormulaSm2Co7
MDL NumberMFCD02091682
CAS #12305-84-9
EC No.235-573-8
Beilstein/Reaxys No.N/A
Pubchem CID10125161
IUPAC Namecobalt; samarium
SMILES[Co].[Sm]
InchI IdentifierInChI=1S/Co.Sm
InchI KeyKPLQYGBQNPPQGA-UHFFFAOYSA-N


Related Products
(518)606-3901
(518)606-3901