SmCo Magnets for High Resistance to Heat and Corrosion

Made with Samarium and Cobalt, these rare earth Magnets are very resilient and are ideal for High Temperature Applications, boasting a working temperature of up to 350°C. The attraction force of SmCo alloys is much higher than Alnico or Ferrite, but slightly inferior than Neodymium, at least at room temperature. Above 150/180°C and in extremely cold conditions they outperform Neodymium Magnets.

Samarium-Cobalt Magnets are resistant to corrosion and oxidation because they contain only traces or no Iron at all.

Filter by Diameter

Filter by Thickness

Filter by price

  • SmCo Disc D.2(+/-0,1)X3(+/-0,1)mm MN
    Strength: nd
    • SmCo Disc D.2(+/-0,1)X3(+/-0,1)mm MN

    • SmCo Disc D.2(+/-0,1)X3(+/-0,1)mm MN

    • From 0,09€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 2(+/-0,1)mm diameter and 3(+/-0,1)mm thickness marked north. “Marked North” variant with a dot indicating the north pole. Max temperature: 350 °C Axial magnetization    
    Quantity Price
    10 - 59 0,30€
    60 - 149 0,21€
    150 - 300 0,15€
    301 - 600 0,11€
    601 - 1500 0,09€
  • SmCo Disc D.4X2mm Ni
    Strength: nd
    • SmCo Disc D.4X2mm Ni

    • SmCo Disc D.4X2mm Ni

    • From 0,26€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 4mm diameter and 2mm thickness nickel plated.   Max temperature: 350 °C Axial magnetization  
    Quantity Price
    10 - 59 0,85€
    60 - 149 0,60€
    150 - 300 0,43€
    301 - 600 0,31€
    601 - 1500 0,26€
  • SmCo Disc D.4X4mm
    Strength: nd
    • SmCo Disc D.4X4mm

    • SmCo Disc D.4X4mm

    • From 0,21€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 4mm diameter and 4mm thickness. Max temperature: 350 °C Axial magnetization    
    Quantity Price
    10 - 59 0,70€
    60 - 149 0,50€
    150 - 300 0,35€
    301 - 600 0,25€
    601 - 1500 0,21€
  • SmCo Disc D.6X6mm
    Strength: nd
    • SmCo Disc D.6X6mm

    • SmCo Disc D.6X6mm

    • From 0,47€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 6mm diameter and 6mm thickness. Max temperature: 350 °C Axial magnetization    
    Quantity Price
    10 - 59 1,55€
    60 - 149 1,10€
    150 - 300 0,78€
    301 - 600 0,56€
    601 - 1500 0,47€
  • SmCo Disc D.9X3mm
    Strength: nd
    • - 31%
      SmCo Disc D.9X3mm

    • SmCo Disc D.9X3mm

    • From 0,37€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 9mm diameter and 3mm thickness. Max temperature: 350 °C Axial magnetization    
    Quantity Price
    10 - 35 0,88€
    36 - 100 0,66€
    101 - 200 0,57€
    201 - 599 0,48€
    600 - 900 0,37€
  • SmCo Disc D.10X4mm M
    Strength: nd
    • Out of Stock
      SmCo Disc D.10X4mm M

    • SmCo Disc D.10X4mm M

    • From 0,35€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 10mm diameter and 4mm thickness marked. You will find a red dot that indicates the pole where is marked.   Max temperature: 350 °C Axial magnetization  
    Quantity Price
    10 - 35 0,83€
    36 - 100 0,62€
    101 - 200 0,54€
    201 - 599 0,46€
    600 - 900 0,35€
  • SmCo Disc D.12X5mm
    Strength: nd
    • SmCo Disc D.12X5mm

    • SmCo Disc D.12X5mm

    • From 1,26€ VAT Inc.
    • Samarium-Cobalt magnetic disc SmCo magnet with 12mm diameter and 5mm thickness. Max temperature: 350 °C Axial magnetization    
    Quantity Price
    10 - 35 3,00€
    36 - 100 2,25€
    101 - 200 1,95€
    201 - 599 1,65€
    600 - 900 1,26€

Custom Made SmCo Magnets

We can manufacture any kind of SmCo Magnet on custom specifications. You can ask for Samarium Cobalt Magnets of any shape and size, with holes, threaded holes, pins, threaded rods, hooks or eyelets. Contact us by phone or email to get a quote and an estimated delivery time.

Do you want to know more about SmCo Magnets?

SmCo magnets are made by mixing and pressing Samarium and Cobalt powders with other elements in lesser concentration (hence the acronym SmCo). This process is called sintering. They can withstand very High Temperatures – up to 350°C, without risks of structural damage or demagnetization. They were the first rare-earth commercially available magnet and the strongest type of permanent magnet before the introduction of Alnico Magnets. Samarium Cobalt magnets are quite brittle and with low mechanical strength.

SmCo Magnets are usually classified based on the ratio of Samarium to Cobalt used during the manufacturing process:

SmCo5 – the ratio of samarium to cobalt is 1:5. Slightly weaker than its counterpat but with maximum restistance to corrosion.

Sm2Co7 – the ratio of samarium to cobalt is 2:7. The strongest version. Marginally susceptible to corrosion because it contains traces of Iron.

For more details you can read our dedicated articles:

Magnets, Heat Exposure and Demagnetization

Permanent Magnets and Heat Resistance: the best magnets to use

If you have any doubt about the right magnet for your application, just contact our technical team by Phone, E-mail or on the Chat (Monday to Friday 8-12.30 / 13.30-17.00).