About Neodymium Magnets

Phones, SSDs and chip cards are safe around everyday magnets. Strong magnets can wipe card stripes, confuse compasses and magnetize watches.

Electric vehicles, wind turbines, robots, drones and medical devices all depend on compact, powerful neodymium magnets.

Flux density measures how concentrated a magnetic field is, in tesla (T) or gauss (G). One tesla equals 10,000 gauss.

It all began rather quietly in 1984. Scientists working independently at General Motors and Sumitomo Special Metals discovered that when they combined the rare earth mineral neodymium together with iron and boron, they could create the world’s strongest permanent magnets: up to 10 times stronger than all other ceramic and alnico magnets available at that time.  Since then, neodymium magnets, also known as NdFeB magnets, have become a critical component in all types of modern electronic devices, from electric motors of all sizes to cellphones, computers, MRI scanners, wind turbines, electric vehicles, and more.   Neodymium Magnets in Cell Phones Cell...

Neodymium magnets work extremely well underwater. But there’s this cantankerous and inconvenient little catch. And it’s called corrosion.Neodymium magnets are typically plated with nickel to prevent rust and corrosion that results from moisture, but unless protected with a special corrosion-resistant coating, they are not waterproof.Nickel-coated neodymium magnets are usually referred to as indoor magnets. They should be kept away from water (especially salt water), as exposure to moisture can cause them to corrode and lose their magnetic strength over time. This is because neodymium magnets have a very high iron content of 64 to 68 percent, making them notoriously susceptible...