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What is the Strongest Magnet You Can Buy?


Distinct varieties of magnets are available on the market, and each one serves a diverse purpose and has a different range of uses.

An essential component of the design process for a magnet assembly is deciding on a suitable magnet material since this will significantly influence its performance. ROBO Magnetics’ decades of manufacturing expertise have taught us a few things to remember when making material and grade choices for your assembly.


Neodymium magnets are rare earth magnets that are very powerful. A permanent magnet implies that it may endure long, which is why they’re so popular. It is one of the most often used rare earth magnets of neodymium, boron, and iron in an alloy.

Commercially accessible, it is the strongest permanent magnet and is inexpensive for the typical individual.

Why Choose Neodymium Magnet?

Aside from the medical, scientific, and automotive industries, neodymium magnets are employed in many other industries, including renewable energy and the car industry. More than 40 years of neodymium magnet development have aided many technical and industrial breakthroughs, some of which may not have been feasible without the neodymium magnets.

For small applications or those with limited space, Neodymium magnets are a great alternative because of their high magnetic coercivity (HCl) and ability to resist demagnetization, making them perfect for a wide range of applications. It can also tolerate temperatures as low as -196 degrees Celsius, making it a popular choice for liquid nitrogen applications (-320 degrees F).

Key Questions to Ask Regarding Neodymium Magnet Applications

When selecting a neodymium magnet material, we need to ask the following questions:

  • What is the required magnetic strength?
  • What does the neodymium magnet need to retain, lift or attract?
  • What are the expected operating temperatures for the neodymium magnet?
  • Is the neodymium magnet to be exposed to corrosive compounds or environment?
  • What is the duration of use or life span of the required neodymium magnets?
  • Does the neodymium magnet have a specific size or weight to work?
  • What sort and amount of material are being connected to this object?
  • Is there a pricing point at which the project is financially viable?

Factors to Consider When Buying a Neodymium Magnet

They are extensively employed in the market because of their great magnetic force, compact size, and high-cost performance. Identifying high-quality neodymium magnets is a challenge. What are the most important things to know?

Thickness and Magnetism Absorption

A neodymium magnet’s performance and drawing might be affected by the thickness of the steel surface attracted. Using a neodymium magnet on a 1mm-thick steel surface will result in the magnet losing 90% of its magnetism and producing just 10% of its maximal performance and pulling power. The thickness of a neodymium magnet is thus critical to guarantee that it performs to its maximum potential.

Material Type Determines Ability to Conduct Magnetism

The neodymium magnet’s performance will be affected by its attracted substance. Before making a purchase, consider the material it is to attract. The superior magnetism of mild steel over alloy steel and cast irons makes it the material of choice. That will diminish the draw of a neodymium magnet on alloy steels and cast irons and will not function at its full potential. Also, cast iron, which is less porous than mild steel, may diminish the magnetic force of a neodymium magnet by as much as 40%.

Magnetic Circuitry VS Air Gaps

Factories should also take air gaps into account before purchasing Neodymium magnets. Air gaps will hamper a neodymium magnet’s performance and pull. A nonmagnetic substance called an “air gap” prevents the magnetism of another neodymium magnet or ferrous item from attracting. If the contact steel is rusted, filthy, painted, or otherwise uneven, air gaps might form, resulting in reduced magnetism.

Sheer Force VS Performance

Before purchasing Neodymium magnets, consider their sheer power. That has an impact on the neodymium magnet’s performance and draw. Depending on the application, neodymium magnets may be mounted in a sheer or vertical position. The sheer position refers to a situation in which neodymium magnets are held vertically. Reduced neodymium magnet performance occurs when the load exceeds the sheer position pull of the neodymium magnet(s).


A neodymium magnet will lose performance if it is subjected to temperatures over its maximum working temperature. Heating over the maximum working temperature repeatedly reduces performance significantly. Before purchasing a neodymium magnet, keep this in mind.


Neodymium magnets are employed for outdoor applications, where adverse weather conditions are typical. A neodymium magnet’s performance and draw may be impacted by water exposure. Water may seep through a neodymium magnet’s plating, causing the neodymium magnet’s performance to deteriorate due to the neodymium magnet’s exposure to water. The usage environment must be taken into account as a result.


Continuously exposed to high temperatures will diminish a neodymium magnet’s performance and pull, as discussed in the section on temperature. As a result, before purchasing a Neodymium magnet, consider variables such as the ambient temperature. Here, you’ll discover a comprehensive selection of our high-temperature neodymium magnets.

Neodymium Magnets: Shapes, Sizes, & Properties

Neodymium magnets are available in a wide range of specifications, sizes, and designs to meet the needs of various industries. Many popular shapes include:

  • balls
  • ring neodymium magnets
  • neodymium magnet cubes
  • rectangular neodymium magnets
  • Others are discs, blocks, bars, and pots which are the possible forms.
  • Counterbore and countersink options are readily available in various sizes and shapes.

So, consider the neodymium magnet Grade and size needed for your application before purchasing.

Physical and Mechanical Properties

Neodymium magnets provide the following advantages over other kinds of permanent magnets:

  • A feature is known as remanence: a stronger magnetic field
  • Resistance to demagnetization: a property known as coercivity
  • High maximum energy product or saturation magnetization: these terms refer to the density of the magnetic field. These neodymium magnets can exert a considerable amount of force because of this.

A Guide to Neodymium Magnet Grade Selection

Your product’s performance will greatly affected if you don’t choose the correct material grade. When selecting a neodymium magnet, ROBO Magnetic is here to assist. Here are some things to keep in mind while deciding on a material Grade:

In the selection of the neodymium magnet material and the grade of that material, the maximum working temperature is a significant consideration. Due to neodymium magnets’ extreme sensitivity to temperature changes, defining your operating temperature range before making a grade selection is crucial.

Holding Force or Magnetic Field Density Requirement

A word of caution: Don’t choose a greater grade of magnetic field density or holding force than you may need. Why use 52 MGOe Neodymium when 45 MGOe Neodymium can do the job just as well? ” While it may be tempting to go with the strongest possible material, this may not be the best option for your specific needs. N55 (55 MGOe Neodymium) is an excellent example of a material with great strength, although it is susceptible to demagnetization at high temperatures. When developing for a high-volume consumer application, it’s possible to overestimate the amount of material you require.

Demagnetizing Resistance

The demagnetizing resistance is the last consideration when selecting a neodymium magnet grade. This element will greatly influence your final design. A material’s intrinsic coercive force (HCI) is directly proportional to its maximum operating temperature. Demagnetization resistance (HCI) is a measurement of HCI. You may raise your operating temperature with a greater HCI. Heat plays a significant role in demagnetizing, although it is by no means the sole one. In addition to magnetic fields generated in your system, the shape of your component plays a significant role in demagnetizing resistance. Damage caused by demagnetization is generally irreversible.

Choosing a Neodymium Magnet Supplier

Your neodymium magnet application and criteria have been laid out; then, it’s time to choose a partner. Selecting the appropriate material grade at the start of your project will significantly influence both cost and possible redesign time. ROBO Magnetic has been a manufacturer and supplier of permanent neodymium magnets since 2006. We are a producer and supplier of high-quality neodymium magnets for commercial, industrial, school, and various applications, with factory prices that are directly competitive and cost-effective. At ROBO Magnetic, we can guide you through this process, eventually saving you time and money, resulting in the best neodymium magnet for your application. In addition to technical support, we can customize neodymium magnets depending on our clients’ specifications and designs. We strive to please our clients by providing competent personnel who can give unique solutions to their demands. Request a quote right now!


Article by

ROBO Magnetic Product Team

We are the manufacturer with 16 years of experience in custom neodymium magnets.

Need A Quote? Get in touch with us directly.

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