Alnico Rod Magnet - 4mm x 20mm
Alnico Rod Magnet - 4mm x 20mm
Available in stock
Alnico Rod Magnet - 4mm x 20mm
Compact, durable, and highly resistant to elevated temperatures, this Alnico Rod Magnet measures 4mm in diameter x 20mm in length and is manufactured from premium Alnico magnetic material. Renowned for its excellent thermal stability and long-term magnetic reliability, Alnico magnets are widely used in industrial, scientific, educational, and engineering applications where consistent magnetic performance is required.
Unlike many modern rare earth magnets, Alnico magnets maintain their magnetic properties exceptionally well at elevated temperatures and offer excellent resistance to corrosion without requiring additional protective coatings. Their robust metallic construction makes them ideal for use in sensors, instruments, magnetic assemblies, educational demonstrations, and specialised engineering applications.
Magnetised through the length of the rod (axially magnetised), this compact cylindrical magnet delivers reliable magnetic performance in a small and versatile form factor. Its slender profile makes it suitable for precision applications, custom magnetic assemblies, laboratory use, prototyping, and restoration projects.
Features & Benefits
- High-quality Alnico rod magnet
- Dimensions: 4mm diameter x 20mm length
- Excellent temperature resistance
- Strong resistance to corrosion and oxidation
- Stable long-term magnetic performance
- Magnetised through the length (axial magnetisation)
- Durable metallic construction
- Suitable for industrial, scientific, and educational applications
Common Applications
- Sensors and instrumentation
- Scientific experiments and demonstrations
- Educational magnetic projects
- Precision engineering applications
- Custom magnetic assemblies
- Product design and prototyping
- Laboratory and testing environments
- Restoration and specialist equipment repairs
Why Choose Alnico Magnets?
Alnico magnets are valued for their ability to maintain magnetic strength across a broad temperature range and their excellent long-term stability. They are commonly used in applications where heat resistance, durability, and dependable magnetic performance are more important than maximum magnetic strength.
Please Note
Alnico magnets are durable but can become partially demagnetised if exposed to strong opposing magnetic fields or improper storage conditions. Handle with care and store appropriately to maintain optimal performance. Keep away from children, pacemakers, sensitive electronic devices, and magnetic storage media.
Pull Force Information
Pull Force Information
Pull force refers to the maximum holding strength of a magnet. Measured in kilograms, it represents the amount of weight a magnet can support when attached to 10mm thick mild steel, with full, flat, and direct surface-to-surface contact.
A magnet's pull force can be affected by several factors, including its orientation (horizontal vs. vertical) and the presence of any air gaps between the magnet and the surface it’s attached to.
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