Harness Samarium Cobalt's Superior Strength

Experience unparalleled magnetic performance and durability with Adams' Samarium Cobalt magnets. Ideal for high-temperature applications, these magnets offer superior holding power, thermal stability, and resistance to corrosion and demagnetization, making them perfect for high-performance motors, magnetic couplings, and industrial lifting.

Samarium Cobalt
Overview

What are Samarium Cobalt Magnets?

Samarium Cobalt magnets are powerful rare earth magnets composed of samarium and cobalt. They are highly suitable for high-temperature environments and applications requiring strong magnetic properties and durability.

Talk to an Adams Expert

Advantages

  • High Magnetic Strength: Superior holding power for various applications.
  • Thermal Stability: Can operate at temperatures between 250°C and 550°C, with Curie temperatures ranging from 700°C to 800°C.
  • Corrosion Resistance: Less prone to oxidation and typically do not require additional coatings.
  • Demagnetization Resistance: High resistance to losing magnetic properties.

Features

  • Hard and Brittle: Prone to chipping and cracking if dropped .
  • Temperature Tolerance: Suitable for high-temperature applications.
  • Machining and Magnetization: Require special handling and magnetizing fixtures; cannot be formed using conventional drilling or milling processes.

Applications

Samarium Cobalt magnets are used in various high-performance applications, including:
  • High-performance motors
  • Magnetic couplings
  • Magnetic separators
  • Electric devices
  • Industrial lifting

1:5 alloy material

1:5 offers 16 MGOe (energy product) to 22 MGOe and is made up of approximately 37% samarium and 63% cobalt. The 1:5 series has a maximum recommended operating temperature of 250°C. SmCo 1:5 magnets require lower field strengths than 2:17 materials to magnetize. In some instances, 1:5  material may be magnetized with multiple poles, provided that a magnetizing fixture is available.

2:17 alloy material

2:17 offers 24 MGOe to 32 MGOe and is composed of about 25% samarium, 5% copper, 18% iron, 2% hafnium or zirconium, with the remainder being cobalt. The 2:17 series has a maximum operating temperature of 350°C. Special grades of 2:17 are available which can operate to even higher temperatures. SmCo 2:17 requires a higher magnetizing field than alloy 1:5 does, and multiple pole magnetization is sometimes possible, provided that a magnetizing fixture is available.

Featured Applications



Samarium Cobalt Discs
Adams offers Samarium Cobalt magnets in discs. Dimensions are listed in inches. Items list below are supplied magnetized through the thickness. Additional sizes, magnetization methods, and grade choices are available upon request and may be on hand from stock.

Item# Diameter Thickness Grade
55B0009 0.118 0.118 18
55B0001 0.187 0.060 18
55B0018 0.250 0.100 24
55B0035 0.250 0.250 26
55B0038 0.312 0.200 20
55B0040 0.375 0.200 20
55B0019 0.500 0.190 18
55B0031 0.625 0.180 18
55B0025 0.750 0.180 26
55B0063 1.500 0.500 26

Samarium Cobalt Blocks

Adams offers Samarium Cobalt magnets in square and rectangular blocks. Dimensions are listed in inches. Blocks listed below are magnetized through the thickness. Additional sizes, magnetization methods, and grade choices are also available upon request and may be on hand from stock.

Item# Thickness Width Length Grade
55C0058 0.188 1.000 1.500 26
55C0016 0.250 0.375 1.000 18
55C0033 0.500 1.000 2.000 26

Demagnetization Curves

A second quadrant demagnetization curve provides information about the magnetic characteristics of a magnet, including the magnetic field strength and how resistant it is to demagnetize. How it is used in a magnetic circuit will affect its performance. When a permanent magnet is fully magnetized, its magnetic domains are aligned. Certain conditions such as temperature and reverse magnetic fields can cause some of the domains to lose this alignment and reverse, triggering the magnet to lose some or all of its magnetic field.
View our SmCo demagnetization curves here

The Solutions
We Offer

Samarium Cobalt Block Magnets

Adams offers Samarium Cobalt magnets in square and rectangular blocks. Samarium magnets can be used for high-temperature applications where neodymium will not work.

Samarium Cobalt Disc Magnets

Samarium Cobalt (SmCo) disc magnets are powerful magnets rare earth magnets composed of samarium and cobalt. They are commonly used in high performance motors, magnetic couplings and magnetic separators. These are brittle magnets and are prone to cracking and chipping. Samarium magnets can be used for high temperature applications where neodymium will not work.

Contact Us

Adams is ready to be a part of your products with off-the-shelf and custom applications. Contact us to find out more.

Contact Us

  • This field is for validation purposes and should be left unchanged.