Ferrite Disc Magnet – 20mm x 10mm | Pack of 10

The Ferrite Disc Magnet – 20mm x 10mm | Pack of 10 is a practical and cost-effective permanent magnet suitable for craft, education, manufacturing, displays, signage, DIY projects and general-purpose magnetic applications. Each round ferrite magnet measures 20mm in diameter x 10mm thick, with 10 individual disc magnets supplied per pack.

Also known as ceramic disc magnets, ferrite magnets are manufactured from a ceramic magnetic material and are valued for their good resistance to corrosion, reliable permanent magnetic properties and economical cost. Unlike neodymium rare earth magnets, ferrite magnets generally do not require a protective coating for normal indoor use.

The relatively thick 20mm x 10mm disc format provides a versatile magnetic component for bonding into products, creating magnetic closures, educational demonstrations and attaching compatible items to ferromagnetic steel surfaces.

Key Features

• Pack of 10 ferrite disc magnets
• 20mm diameter
• 10mm thickness
• Round disc-shaped permanent magnets
• Ferrite / ceramic magnetic material
• Cost-effective general-purpose magnet
• Good natural resistance to corrosion
• Good resistance to demagnetisation
• No electricity or external power required
• Suitable for bonding into products and assemblies
• Useful for education, craft, manufacturing and DIY applications
• Suitable for attraction to compatible ferromagnetic iron and steel

Pack Contents

Each pack contains:

• 10 x Ferrite Disc Magnets
• 20mm diameter per magnet
• 10mm thickness per magnet

The pack format is convenient for applications requiring multiple matching magnets, including repetitive manufacturing, craft projects, classroom activities and product assembly.

Common Applications

These 20mm x 10mm ferrite disc magnets can be used for:

• School science projects
• Classroom magnetic demonstrations
• Arts and crafts
• DIY projects
• Fridge magnet assemblies
• Magnetic closures
• Displays and signage
• Product manufacturing
• Fixtures and positioning
• Educational experiments
• Hobby projects
• Magnetic attachment systems
• General-purpose magnetic holding

Ferrite / Ceramic Permanent Magnet

Ferrite magnets, commonly called ceramic magnets, are permanent magnets manufactured using iron oxide combined with ceramic materials.

They are widely used because they provide a practical combination of:

• Permanent magnetic performance
• Economical cost
• Good corrosion resistance
• Resistance to demagnetisation
• Wide availability
• Suitability for high-volume applications

Their characteristic dark grey to black appearance comes from the ferrite magnetic material itself.

Ferrite vs Neodymium Magnets

Ferrite and neodymium are both permanent magnetic materials, but they have different properties.

Ferrite magnets are generally:

• More economical
• Naturally resistant to corrosion
• Less powerful relative to their size
• Commonly used for general-purpose applications

Neodymium magnets generally provide:

• Greater magnetic strength relative to size
• More compact solutions where high magnetic performance is required
• Stronger attraction from a similarly sized magnet

For applications where economical magnetic performance and corrosion resistance are priorities, ferrite can provide an effective alternative to rare earth magnets.

Magnetic Holding Performance

For strongest practical attraction, the flat face of the ferrite disc should make close contact with a clean, flat and sufficiently thick ferromagnetic steel surface.

Actual magnetic holding performance depends on factors including:

• Steel thickness
• Steel composition
• Surface condition
• Contact area
• Air gaps
• Paint and coatings
• Rust or contamination
• Load direction
• Magnet orientation
• Number of magnets used

Magnetic attraction decreases rapidly as the distance between the magnet and target material increases.

A specific pull force or Gauss rating has not been supplied for these magnets and should not be inferred from their dimensions.

Bonding Ferrite Disc Magnets

The simple round shape makes these 20mm x 10mm ferrite discs suitable for bonding into products, housings, displays and craft assemblies.

When using adhesive:

• Ensure the magnet surface is clean and dry
• Clean the mating surface before bonding
• Select an adhesive compatible with both materials
• Follow the adhesive manufacturer's preparation instructions
• Allow the adhesive to fully cure before loading the assembly

The most appropriate adhesive will depend on the substrate, environmental conditions and forces acting on the finished assembly.

Educational and School Science Applications

Ferrite disc magnets are commonly used in educational settings because their magnetic behaviour can be easily demonstrated in classroom experiments and science projects.

Potential demonstrations include:

• Magnetic attraction and repulsion
• North and south magnetic poles
• Magnetic fields
• Ferromagnetic materials
• Magnet-to-magnet interaction
• Magnet-to-steel attraction

Magnets used by children should always be handled under appropriate adult supervision.

Technical Specifications

• Product Type: Ferrite Disc Magnet
• Alternative Names: Ceramic Disc Magnet, Round Ferrite Magnet, Ferrite Round Magnet, Ceramic Permanent Magnet
• Material: Ferrite / Ceramic Magnetic Material
• Shape: Disc / Round
• Diameter: 20mm
• Thickness: 10mm
• Dimensions Per Magnet: 20mm diameter x 10mm thick
• Quantity: 10 magnets
• Sold As: Pack of 10
• Magnet Type: Permanent Magnet
• Power Required: None
• Target Surface: Compatible ferromagnetic iron and steel
• Typical Applications: Craft, education, manufacturing, displays, closures and DIY projects

Durable, Cost-Effective Magnetic Solution

Ferrite magnets are widely used where a simple, economical permanent magnet is required.

Their combination of low material cost, natural corrosion resistance and stable permanent magnetism makes them suitable for both individual projects and repetitive production applications.

The pack of 10 provides multiple matching magnets for projects requiring several magnetic attachment or positioning points.

Handling Ferrite Magnets

Although ferrite magnets are durable in many environments, the ceramic magnetic material is hard and brittle.

Ferrite magnets can chip, crack or break if they:

• Collide forcefully with another magnet
• Are dropped onto a hard surface
• Experience excessive mechanical pressure
• Are drilled, cut or machined using inappropriate methods

Handle the magnets carefully and avoid allowing them to snap together uncontrollably.

Please Note

This product contains 10 individual ferrite disc magnets, each measuring 20mm in diameter x 10mm thick.

No specific magnetic grade, pull force, Gauss rating, dimensional tolerance or maximum operating temperature has been supplied and these specifications should not be assumed.

Ferrite magnets attract compatible ferromagnetic materials such as iron and many steels. They will not strongly attract aluminium, copper, brass, plastic, timber or many grades of stainless steel.

Actual holding performance depends on the target material, steel thickness, contact area, surface condition, air gap and direction of applied force.

Ferrite is a hard and brittle ceramic material. Avoid impacts, uncontrolled collisions, drilling, cutting or machining that could cause the magnets to chip or fracture.

Keep magnets away from small children and sensitive magnetic or electronic equipment.