The Properties And Applications Of Neodymium Disc Magnets

by Stephen Ellison

Disc magnets are a type of magnet designed to take a disc shape. The magnets usually feature round and thin shapes. They also have a smooth circumference. These are some of the most commonly applied types of magnets on the market. Disc magnets are used for a wide range of commercial and residential purposes. This write-up focuses on neodymium disc magnets. 

Properties of disc magnets

Disc magnets are usually manufactured from neodymium. Neodymium is a rare-earth magnet made from combining alloys of neodymium, iron, and boron. Magnets made from neodymium are known as permanent magnets. Permanent magnets are a magnet that does not lose their magnetization properties once they are exposed to a magnetic field. These magnets are some of the strongest types of magnets on the market. Note that permanent magnets can last up to a hundred years if they are correctly cared for.

Disc magnets are also known for their strength and durability. This is because they are formed through the casting process. Their strength can be attributed to the fact that they are made from neodymium. Neodymium is a strong magnet that is not prone to issues like breakage. Their strength makes them applicable in a wide range of areas of situations.

Disc magnets also come in a wide range of sizes. Regardless of the size, the magnets maintain their disc shape. Their applications usually determine their sizes. For instance, household magnets may be smaller than disc magnets used for making automotive parts.

Applications of disc magnets

As mentioned earlier, disc magnets can be applied residentially and commercially.

Residential or household applications of disc magnets

In this category, disc magnets can be used in the following ways;

  • Holding items together like replacing clasps
  • Attaching items to the fridge and metal surfaces
  • Extracting batteries from tools or toys
  • Locating metallic objects like studs
  • Home improvement projects
  • Creating magnetic shelves for holding up items and tools
  • Repairing magnetic doors
  • As a cover holder for cars
  • Completing science projects
  • Entertainment purposes (kids can have fun levitating objects using disc magnets)

Note that disc magnets used at home usually are smaller because of the small-scale applications.

Commercial applications of disc magnets

Below are some of the most common commercial applications of disc magnets;

  • Manufacturing magnetic doors
  • Manufacturing aviation components
  • Making business displays for holding up signs
  • Making hoverboards
  • Making internal components of headphones, computers, microwaves, and doorbells, among other products.

Cautions you must take when using neodymium disc magnets

When using neodymium disc magnets, you must practice the following cautions;

  • Avoid using hot glue if you must glue your disc magnets. Exposure to hot glue can cause the magnets to lose their magnetism
  • Avoid exposing the magnets to humidity, significantly if they are not coated or plated, as they could develop rust or corrosion


Many people undermine the importance of disc magnets as they do not realize how significant their applications are, especially in their households. This is mainly because some applications of disc magnets are indirect and hard to recognize. For instance, many do not know that devices like headphones and speakers have magnets in them.

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