SmCo Disc Magnet 10mm x 3mm S280

Samarium Cobalt (SmCo) Disc Magnet – 10mm x 3mm | S280

The Samarium Cobalt (SmCo) Disc Magnet – 10mm x 3mm | S280 is a premium rare earth permanent magnet engineered for applications that require outstanding magnetic stability, exceptional high-temperature performance, and superior resistance to corrosion. Manufactured from high-quality S280-grade Samarium Cobalt (SmCo), this precision disc magnet measures 10mm in diameter and 3mm thick, making it an excellent choice for aerospace, medical, industrial, scientific, and precision engineering applications.

Unlike standard neodymium magnets, Samarium Cobalt magnets are specifically designed to maintain consistent magnetic performance at elevated operating temperatures while offering excellent resistance to oxidation, moisture, and harsh chemical environments. These characteristics make SmCo magnets ideal for applications where long-term reliability is essential and where standard neodymium magnets may lose strength or require protective coatings.

The magnet is axially magnetised, with the north and south poles located on the two flat circular faces. This provides a concentrated magnetic field suitable for magnetic holding, sensing, positioning, miniature motors, couplings, instrumentation, and advanced engineering assemblies.

Whether you're manufacturing high-performance electronic devices, designing aerospace components, developing precision sensors, or building specialised laboratory equipment, the 10mm x 3mm S280 Samarium Cobalt Disc Magnet provides dependable magnetic performance in demanding environments.

Key Features

• Premium S280-grade Samarium Cobalt (SmCo) rare earth magnet
• Dimensions: 10mm diameter x 3mm thick
• Excellent high-temperature performance
• Outstanding corrosion and oxidation resistance
• Naturally resistant to moisture and many chemicals
• Axially magnetised for reliable face-to-face magnetic performance
• Stable magnetic properties across a wide operating temperature range
• Precision manufactured for consistent quality
• No protective coating required
• Long-lasting permanent magnet

Common Applications

• Precision sensors
• Electric motors
• Aerospace equipment
• Medical devices
• Scientific instruments
• Laboratory equipment
• Industrial automation
• Magnetic couplings
• Position sensing systems
• Precision engineering assemblies

Ideal For

• Mechanical engineers
• Electronics manufacturers
• Aerospace engineers
• Medical device manufacturers
• OEM equipment manufacturers
• Scientific researchers
• Robotics developers
• Precision instrument manufacturers
• Universities and research laboratories
• Industrial maintenance professionals

Why Choose a 10mm x 3mm S280 Samarium Cobalt Disc Magnet?

The 10mm x 3mm S280 SmCo Disc Magnet is designed for applications where thermal stability, corrosion resistance, and long-term reliability are more important than achieving the absolute highest magnetic strength. While neodymium magnets provide exceptional magnetic force, Samarium Cobalt magnets retain their magnetic properties at significantly higher temperatures and perform reliably in harsh environments where moisture, chemicals, or heat may affect other magnetic materials.

The S280 SmCo grade offers dependable magnetic performance for demanding industrial and scientific applications, while the compact 10mm diameter makes it easy to integrate into precision assemblies, miniature mechanisms, and specialist equipment. This magnet is particularly well suited for applications requiring consistent magnetic characteristics over long operating periods with minimal maintenance.

Technical Specifications

• Product Type: Disc Magnet
• Material: Samarium Cobalt (SmCo)
• Grade: S280
• Shape: Disc
• Diameter: 10mm
• Thickness: 3mm
• Magnetisation: Axial (through the thickness)
• Coating: Uncoated (SmCo material naturally resists corrosion)
• Magnet Type: Permanent Rare Earth Magnet
• Temperature Resistance: Suitable for high-temperature applications compared with standard neodymium magnets

Please Note

Samarium Cobalt magnets are hard and brittle and should be handled carefully to prevent chipping or cracking if dropped or allowed to snap together. Do not drill, machine, or strike the magnet, as this may permanently damage the material.

Although SmCo magnets naturally resist corrosion and generally do not require a protective coating, they remain powerful permanent magnets and should be kept away from children due to the serious swallowing hazard posed by small magnets.

Keep away from pacemakers, implanted medical devices, sensitive electronic equipment, and magnetic storage media. Actual magnetic holding performance will vary depending on the thickness and condition of the steel surface, air gaps, mounting configuration, operating temperature, and surrounding materials. For maximum service life, install the magnet in a way that minimises mechanical stress and protects it from excessive impact.