Ferrite Disc Magnet – 38mm x 5.6mm

The Ferrite Disc Magnet – 38mm x 5.6mm is a versatile ceramic permanent magnet measuring 38mm in diameter x 5.6mm thick. Ferrite magnets provide reliable magnetic performance at an economical price, making this disc magnet suitable for manufacturing, craft, educational, display, holding and general-purpose magnetic applications.

Also known as a ceramic disc magnet, ferrite magnets are manufactured from ferrite magnetic material and are valued for their good resistance to corrosion and demagnetisation. Unlike metallic-looking neodymium magnets, ferrite magnets typically have a dark grey to black ceramic appearance and generally do not require a protective coating for normal use.

With its relatively wide 38mm diameter and slim 5.6mm profile, this ferrite disc provides a useful magnetic surface area while remaining compact enough for integration into products, assemblies, displays and custom magnetic projects.

Key Features

• Ferrite disc magnet
• 38mm diameter
• 5.6mm thickness
• Ceramic permanent magnetic material
• Cost-effective magnetic solution
• Good resistance to corrosion
• Good resistance to demagnetisation
• No electrical power required
• Suitable for indoor and appropriate outdoor applications
• Useful for holding, positioning, craft and manufacturing
• Suitable for educational magnetic experiments and demonstrations

Common Applications

• Manufacturing and assembly
• Product manufacturing
• Craft and hobby projects
• Fridge magnet assemblies
• Displays and signage
• Educational demonstrations
• School science projects
• Magnetic closures
• Holding and positioning
• DIY magnetic projects
• General workshop applications
• Custom magnetic assemblies

Ferrite Ceramic Magnet Construction

Ferrite magnets, commonly referred to as ceramic magnets, are permanent magnets manufactured using iron oxide combined with ceramic materials.

They are one of the most widely used permanent magnet types due to their combination of affordability, magnetic stability and corrosion resistance.

Unlike neodymium rare earth magnets, ferrite magnets generally do not require nickel or another protective metallic coating under normal environmental conditions. This makes them useful for applications where a simple, durable and economical permanent magnet is required.

38mm Diameter x 5.6mm Disc Profile

The 38mm diameter x 5.6mm thickness provides a broad, relatively thin circular magnetic format.

This geometry can be useful where magnetic attraction is required across a larger circular surface without the additional thickness of a deeper disc magnet.

The flat disc shape also makes the magnet suitable for incorporating into:

• Product housings
• Displays
• Craft assemblies
• Magnetic closures
• Educational equipment
• Custom fabricated components

Where the magnet is being recessed into another material, ensure the cavity provides adequate clearance and avoid forcing the brittle ferrite magnet into position.

Ferrite vs Neodymium Magnets

Ferrite and neodymium magnets are both permanent magnets but have different performance characteristics.

Ferrite magnets are generally chosen when:

• Cost effectiveness is important
• Very high magnetic strength is not required
• Good natural corrosion resistance is beneficial
• A ceramic magnetic material is suitable
• Larger magnet dimensions can be accommodated

Neodymium magnets generally provide substantially greater magnetic strength relative to their size and are often preferred where compact dimensions and high magnetic performance are priorities.

For many general-purpose holding, craft, manufacturing and educational applications, ferrite provides an economical alternative.

Technical Specifications

• Product Type: Ferrite Disc Magnet
• Alternative Names: Ceramic Disc Magnet, Ferrite Round Magnet, Ceramic Round Magnet
• Shape: Disc / Round
• Diameter: 38mm
• Thickness: 5.6mm
• Magnetic Material: Ferrite / Ceramic
• Magnet Type: Permanent Magnet
• Coating: Typically not required for ferrite material
• Power Requirement: None
• Primary Function: Magnetic holding, positioning and attraction
• Typical Applications: Manufacturing, craft, education, displays and general-purpose magnetic assemblies

Magnetic Holding Performance

For the strongest practical attraction to a steel surface, the magnet should make direct, flat contact with clean ferromagnetic material.

Actual magnetic holding performance depends on factors including:

• Steel thickness
• Steel composition
• Surface flatness
• Contact area
• Air gaps
• Paint or protective coatings
• Rust and contamination
• Direction of applied force
• Shape and size of the target material

Magnetic holding in a direct pull configuration can differ significantly from performance under a vertical or sliding load.

No specific pull force or magnetic flux density (Gauss) has been provided for this 38mm x 5.6mm ferrite disc magnet, so these values should not be inferred from its dimensions alone.

Bonding Ferrite Disc Magnets

Where mechanical mounting is not available, ferrite disc magnets can be incorporated into suitable assemblies using an appropriate adhesive.

Before bonding:

• Ensure surfaces are clean and dry
• Remove dust, grease and contamination
• Select an adhesive compatible with ferrite and the mating material
• Allow the adhesive to cure according to its manufacturer's instructions
• Avoid impact or excessive mechanical stress during installation

Adhesive suitability should always be tested for the specific substrate, environmental conditions and intended load.

Handling Ferrite Magnets

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

Ferrite magnets may chip, crack or break if they are:

• Dropped onto a hard surface
• Allowed to snap together forcefully
• Subjected to significant impact
• Mechanically stressed
• Drilled, cut or machined using unsuitable methods

Handle the magnet carefully, particularly when working with multiple magnets that may attract each other unexpectedly.

Please Note

A specific magnetic grade, pull force, Gauss rating and maximum operating temperature have not been provided for this product and should not be assumed from its dimensions.

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

Magnetic holding performance varies according to the application, target material, surface conditions and loading direction. Test the magnet in the intended application where holding performance is critical.

Magnets should be kept away from small children and may affect pacemakers, medical implants, magnetic storage media and sensitive electronic equipment.