Alnico magnets are permanent magnets made from an alloy of iron, aluminium, nickel and cobalt, chosen for applications where heat or changing temperatures are a factor.

Browse our alnico magnets for sale below, including button, pot and round bar formats for industrial, technical and workshop applications. Product listings show current prices.

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Why choose alnico magnets?

Alnico is valued for stable magnetic performance as temperatures change. It offers less magnetic strength for its size than neodymium, but can be a practical choice where temperature stability is the priority.

Popular uses for alnico magnets

Alnico magnets are commonly used in:

● Instrumentation and measuring equipment

● Motors and motor assemblies

● Sensors and detection equipment

● Magnetic fixtures and holding applications

● Audio equipment, including guitar pickups

● Educational and technical applications

How alnico magnets are made

Alnico magnets are made by casting, where the molten alloy is poured into a mould, or by sintering, where powdered alloy is pressed into shape and heated. Cast alnico suits larger and more complex shapes, while sintered alnico suits smaller magnets made in higher volumes to tighter tolerances.

How to choose an alnico magnet

When choosing an alnico magnet, consider the grade, coating or construction, operating temperature and handling requirements.

Grade

Our range includes alnico 5. Check the product specifications or contact us to confirm the grade and suitability for your application.

Coating

Alnico has good natural corrosion resistance, so unlike neodymium it doesn't usually need a protective coating. Coating requirements still depend on the product construction and environment, so check the product specifications where moisture, chemicals or other conditions are a consideration.

Temperature

Published operating limits vary by product: the SGC-1 button magnet is listed for up to 550°C (1,022°F), while the SGD-1 pot magnet is listed for up to 220°C (428°F). Check the selected product's specifications and contact us to confirm suitability for your assembly and operating conditions.

Machining and handling

Alnico is a hard, brittle alloy. Where finishing is needed, alnico requires specialist grinding or machining, so specify any holes or slots before manufacture. Handle magnets carefully to avoid chipping, keep them away from strong opposing magnetic fields, and store bar magnets with a steel keeper to maintain their strength.

Custom alnico magnets

If a stock alnico magnet doesn't fit your application, we design and build custom magnetic devices and assemblies in-house. Send us the dimensions, intended use, operating environment, quantity and deadline, and we'll check whether a stock option will do the job before quoting custom work.

A Canadian alnico magnet supplier

Jobmaster Magnets Canada is a magnet manufacturer, supplier and custom fabricator based in Oakville, Ontario. We supply stock alnico, neodymium, ceramic and sheet magnets to manufacturing, automotive, automation and plastics businesses across Canada, with in-house design, engineering and manufacturing for custom orders.

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FREQUENTLY ASKED QUESTIONS

Can alnico magnets be demagnetised?

Yes. Alnico magnets are permanent magnets but have lower resistance to demagnetisation than rare earth or ceramic magnets. Strong opposing magnetic fields or unsuitable magnetic conditions can reduce their strength, so correct handling, storage and application design are important.

Do you ship Alnico magnets outside Canada?

Yes, we ship worldwide. Delivery costs depend on your order weight, selected service and destination. See our delivery and shipping information for current options. Collection is available in Oakville, Ontario.

Can Jobmaster help with other alnico grades, custom sizes or assemblies?

For another grade, size or shape, or a complete assembly, contact us with your requirements and we'll confirm the available options.

What should I do if temperature is an important part of my application?

Let us know before you order with the operating temperature range, how long the magnet is exposed to it, the size and format you're considering, and how it will be mounted. We'll confirm whether alnico is the right choice or whether another material suits better.

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