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Ferrite Magnets

Over many years Frenergy has largely become a specialist supplier of Neodymium magnets to meet the growing market demand for Rare Earth products. However, Ferrite magnets remain a practical and cost-effective alternative to Neodymium magnets and Frenergy continues to stock a wide range of ceramic-based magnet products for our customers.

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Unlike Neodymium Rare Earth magnets which have a polished silver coating, Ferrite magnets, also known as Ceramic Magnets, have a dark-grey colour and stain under friction. Ferrite magnets are stronger than Alnico magnets, however, they are a lot weaker than our number one seller; Neodymium Rare Earth Magnets. The weaker properties of Ceramic magnets make them safer around electronic devices like pacemakers and hearing aids and less likely to interfere with their operation. Having said that, we still recommend a safe distance for both magnet types.

Ferrite Magnetic Properties

Ferrite magnets are attractive to those on a budget because ferrite material is a lot cheaper than Rare Earth material. They have high-temperature resistance (80 - 250 degree Celsius) and much better corrosion resistance. Ideal for outdoor use. Ferrite magnets do not lose their magnetisation over time. They can only be demagnetised by external factors like heat or another strong magnetic field. We also have extensive experience in providing custom magnet orders, so kindly email us with your product requirements for further information.

Ferrite (Ceramic) magnetic material was the most popular and commonly used magnetic material throughout the world for many decades. Ferrite magnets have always ticked a lot of boxes for consumers. The easily recognisable grey, chalky material is lightweight, low cost and, unlike the stronger and much more expensive Neodymium magnetic products, has a very high oxidation resistance. The ceramic nature of Ferrite magnetic products makes them highly resistant to corrosive forces and also heat-tolerant in temperatures up to 250℃ and as low as -40℃. As with other magnetic materials, Ferrite is also a very brittle material and can easily be permanently damaged if impacted by an external force or pressure. Ferrite magnets cannot be screwed, drilled or bent without cracking. To counteract this type of damage and increase their durability, some Ferrite magnets are fitted with a steel cover that helps protect the magnet from accidental impact. These Ferrite Pot magnets also produce a slight increase in holding strength compared to a standard, uncovered Ferrite magnet. The steel casing can also be used as a convenient means to screw or bolt the magnet to another surface so it can be attached to, or removed from, a surface as needed.

Other Ferrite magnets have a rubber-coated exterior that protects the magnet inside. Frenergy has small rubber-coated Ferrite Discs that are sold in a mixed-colour 4-pack that are ideal for magnetic whiteboards at school or in the office.

How to use our Ferrite Magnets

Small or large Ferrite Disc and Block magnets are excellent for hobbies, crafts, and educational purposes and any application where a low strength magnetic field is preferable or an advantage. Once the surface dust has been wiped clean with a cloth these Ferrite magnets can be set in place permanently with epoxy glue. The moderate pull-force of Ferrite magnets is also ideal for use in Latch Magnet door closure devices. Doors and cupboards need to close firmly yet not be too difficult to open. Here too, the fragile Ferrite magnet inside the device is protected by a steel casing to prevent the door from damaging the magnet. A metal striker plate is supplied with the Latch Kits and fixing screws are also included.

Find Ferrite magnets for sale and buy with confidence from the secure Frenergy online store. Free standard shipping Australia-wide applies to all orders over $50! You can see our shipping options and returns policy here.


Are ferrite magnets strong?

Generally speaking, it can be said that Ferrite (Ceramic) Magnets have moderate strength or pull force. Although not as strong as a Neodymium magnet, they have more magnetic strength than Alnico magnetic products. In fact, large Ferrite magnets are very strong and the far-reaching magnetic field of Ferrite magnets make them highly suited to swarf metal collection and for metal recycling or metal decontamination. Small Ferrite magnets that are less than 30mm in diameter are not likely to be strong enough to support heavy weights or cause damage.

Do ferrite magnets rust?

No. This is the most beneficial feature and unique aspect of Ferrite magnetic material. If handled with care and not exposed to another strong magnetic field, a Ferrite magnet will not degrade and will keep its magnetic power for many years or even decades to come.

What are ferrite magnets used for?

Ferrite (Ceramic) magnetic material is considered an advantage in applications where high-temperature manufacturing occurs or for outdoor locations where corrosive forces such as saltwater and salt air are experienced. Ferrite magnets are also an ideal option when reducing product manufacturing costs is a bigger priority than the need for magnetic strength.

Ferrite magnets have been used for decades in loudspeakers and audio equipment technology. Other industries and technologies that use Ferrite magnetic material include:

  • Medical diagnostic equipment and instruments
  • Electric motors, generators and alternators
  • Hybrid and Electric Vehicles
  • Flexible magnetic sheets for advertising and promotional products. These contain a Ferrite powder and rubber compound.
  • Large Ferrite ring magnets are the main component in the Magnetron which is responsible for generating the heat energy inside a microwave oven.

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The Pull Force listed for each magnet is based on lifting 10mm thick steel vertically. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around 30% of the pull force listed due to the effects of gravity and the lack of traction between the surface and the shiny magnet.