Ferrite Magnets

Strontium Ferrite

Hard ferrite magnets, sometimes called ceramic, were developed as a low cost alternative to metallic magnets and have been manufactured since 1954. Strontium is combined with iron atoms to form a magnetic compound that is stronger than alnico and has much better corrosion resistance than rare earth.

Although they provide less energy than other magnets available today, ferrite magnets are frequently preferred because of their stability, high resistance to demagnetisation, outstanding corrosion resistance and, because of their low price per magnetic output, are often the most cost effective solution to a problem. They are widely used in electronics, mining, metallurgy and health therapy applications.

Measured by weight, ferrite magnets represent more than 75% of the world magnet consumption.

Uses include:

• Electric motors
• Audio speakers
• Electronic equipment
• Industrial automation
• Conveyor belts
• Magnetic separators
• Magnetic resonance imaging
• Automotive sensors

About the product

• Chemical composition Ba/Sr0.6Fe2O3.
• Produced by powder metallurgical process.
• Can be cast into any desired shape or size, then magnetised.
• Readily available in various forms.
• Comparatively hard and brittle, cannot be drilled or machined.
• Extremely stable and resistant to demagnetisation.
• Very cost effective price/output ratio.
• Outstanding resistance to corrosion.
• Very good temperature stability.