About Neodymium Magnets

Pull force, also known as magnetic pull, is a measure of the strength of a magnet's magnetic field. It is the force that a magnet can exert on an object made of ferromagnetic material, such as iron, nickel, or cobalt. The pull force of a magnet is determined by the strength of its magnetic field and the size and shape of the magnet. Often measured in pounds or kilograms, the pull force is the force required to pull that magnet straight free from a thick steel plate. The pull force also tells you the limit of that magnet's holding power.Generally,...

Neodymium magnets are typically coated with Nickel to prevent rust and corrosion from moisture, but unless coated with a special corrosion resistant coating, they are not waterproof. 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. It is important to note that even a small amount of water, such as high humidity, can cause rust to form on the surface of the magnets. If you need to use neodymium magnets in a damp or wet environment, it is best to use a magnet...

Like all magnets, neodymium magnets will eventually lose their strength over time, but this process is slow and can take many years or decades. The rate at which a magnet will lose its strength depends on a number of factors, including the material of the magnet, the environment in which it is stored, and the temperature at which it is kept. Neodymium magnets are made from an alloy of neodymium, iron, and boron, and are known for their strong magnetic properties and durability. This is why they are often referred to as permanent magnets. They can withstand high temperatures and...

Yes. Although they have the highest magnetic field strength and have a higher coercivity (which makes them magnetically stable), neodymium magnets have a lower Curie temperature and are more sensitive to heat and vulnerable to oxidation than samarium-cobalt magnets. While neodymium magnets have been proven to retain their effectiveness up to 80°C or 176°F, this temperature may vary depending on the grade, shape and application of the particular magnet. High temperature grades of neodymium magnets are available for applications that may expose the magnets to heat above the normal maximum operating temperature. If a magnet is heated above its maximum...

They are surprisingly strong, much more powerful than most other magnets you may have handled. When you are separating and working with them, they will jump back together unexpectedly. In fact, the greater force exerted by rare earth magnets creates hazards that are not seen with other types of ceramic or alnico magnets. Neodymium magnets that are larger than a few centimeters are strong enough to cause injuries including pinched and/or lacerated fingers. Strong magnets can even cause broken bones.Magnets that are allowed to get too near to each other can suddenly jump together and strike each other with enough...