Neodymium Magnet Grades: How to Figure Out the Strength and Temperature Rating of Neodymium Magnets

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Neodymium magnets are considered as the strongest and most powerful type of magnets in the world. They were invented in 1982 and they belong to the Rare Earth magnet family. Neodymium magnets are usually referred to as NdFeB magnets because they’re composed mainly of Neodymium (N), Iron (Fe), and Boron (B).

Neodymium magnets have a pretty simple nomenclature. All of them start with a letter N followed by a two-digit number. This number refers to the Maximum Energy Product of the material that the magnet is made of. Generally, the higher the grade, the stronger the magnet.

Currently, the highest grade available is N52. That means N52 is the strongest and most expensive neodymium magnet. N35, on the other hand, is the weakest and least expensive magnet.

At times, a suffix letter may follow the number. These letters represent the Intrinsic Coercivity (Hci) of the material. The higher the Hci, the higher the temperature the Neodymium magnet material can be exposed to before it loses its magnetism. However, there are other factors to consider including the magnet’s physical size, shape, and the total magnetic circuit.


Neodymium Magnets and Magnetic Therapy

Magnetic therapy is a form of alternative medicine wherein permanent magnets are used to cure various health problems. For years now, many people have been using neodymium magnetic jewelry to deal with minor health issues because of their healing properties. Any type of jewelry may be used for this purpose, such as necklaces, bracelets, rings, and anklets.

If you’re interested in trying out neodymium magnetic jewelry for therapeutic purposes, all you have to do is wear it on your skin or close to it. Based on research, neodymium magnetic therapy is natural and safe, and they do not have any side effects. However, if you’re still worried about how your body will respond to the magnet, you may start with wearing it for a short period of time and then gradually increase the duration of the therapy. Many people start experiencing the benefits of neodymium magnets within two weeks of using them.


Few Reminders When Handling Neodymium Magnets
Neodymium Magnets are very strong and powerful so they need to be handled with extreme care and precision. Take note of the following reminders to prevent accidents:

  • Since neodymium magnets are prone to chipping, you will need special machines during operation. It’s also important to have every operation supervised by professional technicians.
  • Don’t forget to protect your hands when you’re working with neodymium magnets. Be especially careful when handling two attracting magnets because you could hurt your fingers by putting your hand  between these magnets.
  • Neodymium magnets should never be heated above 175 °F or 80°C because they will start losing their magnetic properties. This could also cause fire and toxic fumes.
  • Since neodymium magnets can generate strong magnetic fields, do not leave them near cellphones, computers, and other electronic devices to avoid any damage.
  • Keep neodymium magnets away from children. Some magnets are really small, and kids could choke on them.
  • Do not place neodymium magnets near a pacemaker because they could cause malfunction.
  • Transportation of magnetic materials by air in the United States is not allowed.

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