Magnet Types
Welcome to the Aussie Magnets Magnet Types guide.
Permanent magnets are manufactured from several different magnetic materials, each with unique properties, strengths and temperature limits. The most common permanent magnet types used in industry, engineering and everyday applications include neodymium magnets, ferrite magnets, alnico magnets and samarium cobalt magnets.
Each magnet type offers different advantages in terms of magnetic strength, corrosion resistance, operating temperature and cost.
This guide explains the main types of permanent magnets and helps you understand which type is best suited for your application.
Jump to section:
Neodymium Magnets | Ferrite Magnets | Alnico Magnets | Samarium Cobalt Magnets | Flexible Magnets | Choosing the Right Magnet Type
Neodymium Magnets
Neodymium magnets (NdFeB) are the strongest type of permanent magnet available. They are commonly referred to as rare earth magnets and provide extremely high magnetic strength relative to their size.
Neodymium magnets are widely used in industrial applications, engineering projects, electronics, magnetic assemblies and heavy-duty holding applications.
Because of their strength and compact size, neodymium magnets are used in everything from electric motors to magnetic mounting systems.
Ferrite Magnets
Ferrite magnets, also known as ceramic magnets, are one of the most widely used types of permanent magnets.
They are manufactured from iron oxide and ceramic materials and offer good corrosion resistance and stability at higher temperatures.
Although ferrite magnets are weaker than rare earth magnets, they are very cost-effective and ideal for applications where extreme strength is not required.
Ferrite magnets are commonly used in speakers, motors, magnetic separators and general industrial applications.
Alnico Magnets
Alnico magnets are made from an alloy of aluminium, nickel and cobalt. They were among the earliest high-performance permanent magnets and remain popular for certain applications.
Alnico magnets offer excellent temperature stability and can operate at temperatures far higher than neodymium magnets.
They are commonly used in sensors, guitar pickups, scientific instruments and educational demonstrations.
Their strong and stable magnetic field makes them suitable for specialised applications.
Samarium Cobalt Magnets
Samarium cobalt magnets are another type of rare earth magnet.
They provide very strong magnetic performance while also offering excellent resistance to heat and corrosion.
Compared with neodymium magnets, samarium cobalt magnets perform better in high-temperature environments and harsh industrial conditions.
They are commonly used in aerospace, defence, medical devices and specialised industrial equipment.
→ View Samarium Cobalt Magnet Guide
Flexible Magnets
Flexible magnets are manufactured from ferrite magnetic powder combined with a flexible polymer binder.
This creates a magnet that can be cut, bent or rolled while still retaining magnetic properties.
Flexible magnets are commonly used for magnetic sheets, signage, vehicle graphics, fridge magnets and educational materials.
They are ideal for applications requiring lightweight magnetic materials with flexible shapes.
Choosing the Right Magnet Type
Selecting the right magnet type depends on several factors including required strength, operating temperature, environmental conditions and budget.
Neodymium magnets provide the highest strength, while ferrite magnets offer a cost-effective solution for many everyday applications.
For high temperature environments, alnico or samarium cobalt magnets may be more suitable.
Understanding the properties of each magnet type helps ensure the correct magnet is chosen for the job.
These magnet guides are written by the technical team at Aussie Magnets, an Australian supplier of industrial, commercial and specialist magnets since 1989.