Frequently asked questions about neodymium magnets

Below are short answers to frequently asked questions about neodymium magnets, with links to the detailed articles.

What is a neodymium magnet?

A neodymium magnet is a permanent magnet made of neodymium, iron, and boron (NdFeB). Read more in what is neodymium and where does it come from?

What do N35, N42, N48, or N52 mean?

The N-value represents the magnetic grade. A higher value means more magnetic energy for the same size, but it is not always the best choice. See what do N35, N42, N48, and N52 mean?

How strong is a neodymium magnet?

That depends on the grade, size, shape, and surface. See how strong is a neodymium magnet? and holding force, pulling force, and working load.

What temperatures can neodymium magnets withstand?

Standard neodymium magnets are usually resistant up to about 80 °C. Above that temperature, they can lose their strength. See what happens at high temperatures?

Do neodymium magnets rust?

Neodymium is sensitive to oxidation; that is why the magnets have a coating. Read why do neodymium magnets rust? and which coating or finish should you choose.

Can magnets be used outdoors?

That depends on the coating and the environment. See can magnets be used outdoors?

Do magnets work through wood, glass, or plastic?

Yes, but the strength decreases as the material gets thicker. See can magnets work through wood, glass, and plastic?

Is a magnet dangerous?

Magnets are not toys and should be kept out of reach of children. Keep strong magnets away from pacemakers, electronics, and bank cards, and watch your fingers. More in working safely with magnets.

Which magnet should I choose?

Start with the shape and the mounting method. See which neodymium magnet should you choose? or ask the Magnet Specialist using the magnet advisor.

How quickly will I receive my order?

Orders placed and paid for on workdays before 4:00 PM will be shipped the same day if in stock. Free shipping within the Netherlands from €45.