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How Are Pot Magnets Made?

What are pot magnets?

Strong magnets, powerful attraction, and small design go into making a pot magnet — these are the qualities that define the strong permanent magnet system that we bring you today. These magnets are embedded into a durable steel cup or channel and are called pot magnets because they can hold so much in your home or workplace.

A pot magnet is a magnet that has powerful permanent magnets(such as Neodymium Magnets, SmCo Magnets, AlNiCo Magnets, and Ferrite Magnets) embedded into a steel cup. The cup comes in either a flat or channel shape with a counter-bored hole, a tapped hole, a countersunk hole, a threaded stud and is an alternative mounting option for items that can't be mounted using traditional magnetic mounting methods. So  It’s also named as a cup magnet or mounting magnet, holding the magnet. If added extra hook, clip, or covered rubber coating, this pot magnet also can be named hook magnet, magnet clip, or rubber covered magnet.

Pot magnets come in several different shapes and sizes, providing countless options for your application. They are designed to hold up to a whopping 8kg-3000kg so that they can be used for all kinds of different applications.

How are pot magnets made?

A pot magnet is made from a permanent magnet and an iron part, the shape can be round, square, or channel.  The magnet is embedded into a durable steel cup or channel by gluing, welding or punching.  it retains its magnetism when not exposed to outside magnetic fields or heat. However, powerful magnetic fields can remove the magnetism of a pot magnet — including those created by some industrial machinery. The loss of magnetism also occurs if a pot magnet is heated or worked at a high temperature. The loss is related to its size and what magnetic material is used.

It's important to do your research when looking for a wide range of pot magnets and magnetic assemblies. There are several different types of magnets at work in this market, each with its strengths and weaknesses.

The world of neodymium magnets is both fascinating and intriguing. There are many different types of magnets on the market, and all have their characteristics, some good and some bad. For example, you've got Samarium Cobalt magnets which are strong and have excellent temperature resistance but can chip. There are also Neodymium Iron Boron magnets(Simply named  NdFeB Magnets, Neodymium Magnets or NIB Magnets) which are even stronger but can deform permanently in a very wide range of temperatures.

NdFeB, SmCo, Alnico, and ferrite are the most common types within pot magnets. Each has its properties and characteristics. Size for size, NdFeB magnet will be most powerful, while ferrite magnet will be cheapest but least powerful. SmCo will fall between the two in terms of power and price, whereas Alnico will have a range of performances depending on its design.

These types have their own properties, even though they all fall into the same magnetic category. For example, NdFeB magnets will be stronger than ferrite versions, but they'll cost more; however, ferrite versions will be much cheaper.

What are the advantages of pot magnets?

  1. The rare earth magnet technology gives you the power to do more with less. Its small size, portable design, and lightweight nature can be operated easily, wherever you are.
  2. A strong magnetic force can be generated using high-quality magnets and less rare-earth.
  3. Neodymium magnets, SmCo magnets, and Ferrite magnets are brittle, but pot magnets are more resistant to chipping and cracking as those permanent magnets are protected after they are embedded into a steel shell or cups.
  4. Pot magnets are versatile. They come in various sizes, shapes, and colors, and they're great to use with many types of mounting options. They're strong enough to hold anything from decorative kitchen accessories to work tools or sports equipment.

What are pot magnet materials?

1. Ferrite magnets

Corrosion Free, curie temperature up to 450-500°C, Long Lifecycle, Low Cost. But different engineers advise max working temperature no more than 100°C or 150 °C or  200°C because its magnetism will be decreasing in high temperatures.  Also please note ferrite magnets maybe lost their magnetism when they meet super-low  temperatures (minus 40 degrees Celsius.)

2. Neodymium iron boron magnets

Highest Performance, curie temperature up to 300-500°C, Due to high magnetism, it can corrode if the plating is damaged, higher cost. If use common grade, such as N35, we advise it only be used at room temperature. If the working temperature is 50°C-80 °C, the magnet should choose M or H grade. Anyway,  N  for room temperature, M no more than 80-100 °C, H no more than 100-120 °C, SH 120-150 °C, UH  150-180 °C, EH 180-220 °C, TH 220-240 °C,  RH  240-260°C. Of course, the cost will become more and more.

3. Samarium cobalt magnets

Good performance, High corrosion resistance and will operate at high temperatures 250°C -300°C. Special grade can reach 500 °C, but smaller force.

4. Alnico magnets

Stronger than ferrite magnet, excellent corrosion resistance, strong magnetic field operates at the high temperature of any magnet, 450°C. Its magnetism is the most stable at high temperatures.


Pot magnets are equipped with a magnetized coating and can "stick" to each other. This provides you with an array of possibilities for their use — they can be used as auxiliary instruments during transport, clamping, mounting, lifting, welding, separation, etc. The surface treatment technology makes them especially flexible and durable for use in various industrial sectors. No matter how careful you are, sometimes there are small scratches or dents on your pot magnet. But this won't affect its functionality in any way. Also, even if the steel pot is a little bit scratched up or damaged, it can still hold any place you want to hold.

Hold Force of Pot Magnet:

Any magnet's "hold force" is determined by the magnet's material and shape. Magnetism is confined to one face only, where it is concentrated to give the maximum holding force possible for the size of the magnet. Max hold force can up to 3000Kgs.


Pot magnets are used to hold metal objects in place. Pot Magnets come in two different forms. One is a channel shape, and the other is a flat square. They have been used as a hands-free alternative to magnetic mounts when a magnetic mount would be impractical. Pot magnets can be attached to a steel surface and then positioned against any other steel surface, such as inside a cabinet. The strength of a pot magnet depends upon the material that has been used while it was being manufactured, and the other thing is the temperature at which it is presented.

 It’s an ideal magnetic assembly for industrial and home use as hanging and wall mounting applications.

  • Hanging Items;
  • Fishing for Lost Objects;
  • Hobby & Leisure;
  • Mounting Article;
  • Clip doc or pic or note on board;


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