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Neodymium magnets are among the strongest magnets available on the market. They stand out with many advantages, making them popular in a wide range of applications:

Key features:
Extremely strong magnetic force, allowing effective attraction even from a distance.
Compact sizes, meaning even small magnets have great power.
High resistance to demagnetization under normal usage conditions.
Wide range of applications, from industrial to everyday use at home.
However, they require caution during use to avoid damage or injury.

To choose the best magnet, it's worth conducting thorough research and considering the shape and attraction power. Start by estimating what size of magnet you will need, e.g., whether you want to use a cylindrical magnet or a magnet with a hole. Remember, a larger magnet is stronger but may also be more dangerous to use. Next, focus on the load-holding capability, which is crucial for selecting a magnet for your project. For more information on attraction power, refer to the product specifications.

Magnets are essential in many projects, both for improving home functionality and as part of products for sale. In some cases, they need to be glued. Here are some tips to help you succeed on the first try.

Application tips:
Always read the instructions for the glue you are using.
Before applying the glue, make sure the surfaces are clean. Residues, grease, or dirt can create a barrier that prevents proper adhesion of the magnet.
It is recommended to sand smooth magnet surfaces to improve glue adhesion.
Gluing magnets to plastic can be more difficult due to issues with achieving proper glue adhesion. Consult the glue manufacturer's technical support for advice on plastics.
The best choice of glue is two-component epoxy resin, which works well in most cases. Recommended glues include: Loctite Plastic Bonder Epoxy, E6000 Adhesive, Super Glue, Gorilla Glue, and many others.
Avoid using hot glue guns as the high temperature can demagnetize the magnets.

For license plate mounting, it is recommended to use two magnets MPL 40x18x10 / N38 - neodymium magnet under the bumper and two magnets MPL 40x20x5 / N38 - neodymium magnet under the license plate. It is important to attach a thin sheet of metal under the plate, which will cover the magnets and protect them from detaching due to heat and vibrations. Since license plates are made of aluminum and are non-magnetic, the metal sheet helps keep the magnets in place. Additionally, the rivets on the plate can create the illusion that the plate is permanently attached, which enhances security against theft.

Magnets attract iron because iron is a ferromagnetic material. The atomic makeup of iron allows easy attraction with the magnetic field of the magnet.

Magnets usually do not attract aluminum because aluminum is not ferromagnetic materials. However, in certain situations, such as the presence of strong magnetic fields, aluminum can exhibit slight reactions.

Magnets attract metal because some metals, such as steel, have magnetically attractive characteristics. When a neodymium magnet approaches a steel surface, magnetic polarizations are created, which bond the magnet to the metal.

Use a compass: A simple method is to use a compass. Be cautious not to let the compass needle touch the magnet to avoid damaging the compass. The compass needle points to the magnetic 'S' pole.
Use a smartphone app: There are apps that help identify the poles of a magnet.
Use a teslameter: A teslameter measures magnetic induction and shows which pole is which.
Magnetic pole detector: You can also purchase a pole detection device that will help you easily identify the poles. For more information on magnetic directions, visit NS magnets.

To magnetize a neodymium magnet, a process called "magnetic induction" must be performed. There are several ways to magnetize a magnet:
Using a strong neodymium magnet: Place the magnet next to a strong neodymium magnet, ensuring the poles of the magnets touch.
With a flow of electricity: Connect the magnet to electrical wires, which causes the electric current generates magnetism in the magnet.
With a specialized device: Magnetic induction devices available in electronics stores allow you to magnetize a magnet using a strong magnetic field.

Important: Magnetizing a neodymium magnet can be difficult if the magnet is weakened or incomplete. More information on magnetization methods and pole directions can be found in our technical guide.

A magnet and a magnetic holder differ in construction and purpose. A magnet is a component made from a magnetic material that attracts ferromagnetic metals such as ferromagnetic metals. It is used in various fields such as electronics, medicine, automotive.

A magnetic holder is a magnet with an enclosed casing that protects it from damage, such as mechanical damage. Thanks to its special design, the magnetic holder may include additional features like threads or handles, making installation and use easier. The benefit of magnetic holders is their higher load capacity, but they have a smaller range of action. For more information about magnets and magnetic holders, visit technology.

To pull out dents from car sheet metal, several methods can be used. One is using a magnet in conjunction with a large ferromagnetic ball on the other side of the sheet. This allows leveling the sheet, but this method is only effective if the sheet is thicker than 0.6 mm.

Another method is the PDR technique (Paintless Dent Repair), which involves straightening the sheet using a special kit (cost approx. 500 PLN). This labor-intensive method allows for dent removal without the need for repainting.

Alternatively, a specialized PDR 1000 device can be used, which generates a magnetic field and is dedicated to removing dents from flexible steel bodies. This solution is fast and effective, and is ideal for car mechanics. For more information about magnets, visit our technology guide.

The magnet RM R6 GOLF - 13000 Gs / N52 from DHIT is one of the best magnets for anti-theft clips, with a high strength of 12000-13000 GS. Thanks to its unique "cylinder" shape with a recessed center, the magnet works doubly on clips of various shapes, allowing for quick and easy removal. The magnet is easy to handle and convenient, and its installation on a counter is very easy. This is a modern and effective tool recommended for retail, such as outlets. Ideal for sellers who value effectiveness and speed. For more information on anti-theft clip removal magnets, visit anti-theft clips.

No, you should not solder or weld neodymium magnets. High temperatures generated during soldering or welding can demagnetize magnets, leading to removal of magnetic properties. Additionally, there is a risk of fire during the process. Burning magnets leads to the emission of toxic gases, which poses a health hazard and can lead to fume poisoning. Instead, use appropriate techniques that do not affect their magnetism.

Separating strong neodymium magnets requires precision and caution. The best way is to utilize tools such as wedges or dedicated magnet separators.
Start by sliding one magnet to the side, instead of pulling it directly. Hold the magnets to prevent them from sudden connection. More information can be found on the separation tools page.

For cutting and grinding neodymium magnets, special diamond discs with water cooling are used. This process requires precision and experience. For more information, visit the diamond tools page.

Connecting several magnets can enhance their performance, but only under specific conditions. Increasing the power has its limitations.

No, a regular magnet cannot effectively replace a advanced magnetic separator. Despite theoretical possibilities this is feasible, in practice using a single magnet instead of a complex magnetic separator will prove inefficient. Magnetic separators are advanced devices that are adjusted to specific requirements and working conditions, often equipped with cleaning mechanisms and fastening components. In sectors such as the food industry, where there are specific requirements for cleaning products using a magnetic field, using a single magnet instead of a separator will not be enough, but also cause issues during auditing by auditors.

Magnets are incredibly versatile tools used in many areas of life and industry:

Examples of applications:
Home: Tool organization, photo mounting, or creating magnetic closures.
Office: Magnetic boards, document holders, organizers.
Industry: Metal separation, mounting components, electric motors.
Education: Physics experiments, teaching magnetism principles.
Hobbies and art: Creating decorative magnets, modeling, DIY projects.

Fridge magnets are mainly made of magnetic foil, which can be easily cut and decorated. Another popular material is resin, used for durable finishes. Fimo allows for handmade magnets, while paper is used for creating photo magnets. Additionally, industrial glues are often used in the production of magnets to attach decorative elements.

Neodymium magnets are widely used in various fields such as electronics, the automotive industry, medicine, agriculture, and more. They can be found in speakers, electric motors, magnets used in the treatment of diseases, and even in magnets used in agriculture for guiding machinery.

Neodymium magnets are used in many fields, such as speakers, electric motors, and also magnetotherapy.

Neodymium magnets are widely used in industry, electronics, and medicine. They are used in converters, wind turbines, and surgical tools. For more examples, visit the magnet applications page.

Magnets stick to refrigerators because a large portion of refrigerators have iron surfaces. Metallic surfaces of refrigerators act as magnetic conductors, which allows magnets to stick.

If you need a strong magnet with a handle, we recommend models from the UMP series, such as:
Magnet UMP 67x28 [M8+M10] F120 GOLD, ideal for work with kids,
Magnet UMP 75x25 [M10x3] F200 GOLD, a universal choice with a 290 kg lift,
Magnet UMP 94x28 [M10] F300 GOLD, for more demanding tasks.
For more information, visit the what magnet for searching page.

Mainly, the primary users of magnets are companies selling measuring devices, electronics, electrical products, automotive businesses as well as manufacturing different industrial machinery. Magnetic capabilities are also highly valued by the furniture sector, clothing industry, particularly related to medical apparel, distributors of closures for fashion accessories and the marketing and promotion.

Making your own fridge magnets is easy. You need any magnet, glue, and a decorative surface (e.g., a wooden figurine). Attach the elements with glue and you're done!

The force of interaction between two magnetic poles is a key aspect of magnet functionality, which can be easily observed in practice:

Basic principles:
Opposite poles (N and S) attract, creating a stable connection.
Like poles (N and N or S and S) repel, making it difficult to bring them together.
The force of interaction depends on the distance between the poles and the power of the magnets.
Magnetic fields can affect conductors as well as some electronic devices, so caution is advised.
Proper utilization of magnetic poles enables effective applications in technologies such as electric motors and separators.

The first laboratory research on materials that could be used for the creation of powerful magnets began in 1966. At that time, scientists K. Strnat and G. Hoffer from the Air Force Materials Laboratory initiated a wide range of studies on new materials constructed using metals forming part of the group known as rare earth metals. In the early phase, the tested alloys planned to be used for producing high-strength magnets consisted of iron, cobalt, and light lanthanides, which include: cerium Ce, praseodymium Pr, neodymium Nd, yttrium Y, samarium Sm, and lanthanum La. These lanthanides show distinctive properties, such as the ability to be strongly magnetized, however one drawback was their low Curie temperature. Today’s high-strength magnets contain iron as well as and also carefully selected lanthanides, which provides them with strong magnetocrystalline anisotropy, and besides that, a few percent cobalt is added to compensate for the low Curie temperature. The debut high-power magnets were developed around 50 years ago from powdered samarium together with a few additional lanthanides. Thus, the first high-strength magnet SmCo₅. Production techniques relied on the phenomenon of directional alignment of the alloy crystals within powdered material in the presence of a magnetic field through sintering. The formation of preforms took place at a high temperature of around 1120°C with a final annealing stage at a temperature 250°C lower. The last process of manufacturing of this powerful magnet involved magnetizing the material under a strong field of 2T. This process, the Curie temperature of the prototype magnet reached 745°C.

During scientists were designing subsequent high-power magnets using samarium, in 1983 it was discovered previously unknown magnetic properties of neodymium in combination with iron and steel. The American company GM a year after the discovery created compound with the chemical structure Nd₂Fe₁₄B, in the proportion of over 70% iron, 15% neodymium, 6% boron. The process for creating powerful neodymium magnets is based on two methods. The Sumitomo plant from Japan, within the structures of Hitachi, similarly as in the case of powerful magnets produced from samarium, used a method of sintering powdered substances, resulting in the production of dense magnets.

In the USA powerful neodymium magnets were manufactured in the plants of GM by means of a method of rapid temperature reduction of molten isotropic powder. Why using boron, neodymium and iron provided much greater efficiency? Using neodymium was much more cost-effective than in the case of samarium, and additionally neodymium is characterized by much better magnetic parameters. Yet the Curie temperature of neodymium was significantly lower, and so it was decided to increase that temperature to 530°C. Such a value was achieved through the addition of a small amount of boron to the composition of the neodymium magnet. Furthermore it is also possible modify the magnetic characteristics of the magnet by incorporating additional elements, such as gallium Ga, copper Cu, niobium Nb plus aluminum Al.

Magnets based on neodymium are currently the strongest types of magnets that have been created so far. Nearly 30 years ago, at the Trinity College Dublin, Michael Coey managed to create a previously unknown magnetic alloy with the formula Sm₂Fe₁₇N₂. The process of creating this material used synthesis of powders of samarium and iron, which were compacted in a powerful magnetic field together with a nitrogen additive, resulting in a Curie temperature range of 470°C and magnetization near 0.9T. These are not results comparable to neodymium magnets, however the newly developed composition of samarium significantly exceeded the first magnets utilizing this element. The last years of the previous century brought further discoveries in the area of powerful magnets and technologies of their creation.
An alloy with a nano-crystalline structure was was developed, made of grains with a size smaller than 100 nm. The grains discovered during the research nano-crystals, in contrast to monocrystalline structures are separated by much larger boundaries with higher surface tension as well as a less ordered internal structure. By using, at the stage of sintering a mixture of elements from the rare earth group along with an iron additive, they are characterized by a high level of magnetic remanence. So good magnetic characteristics also come from one more thing, which means the coupling of magnetic moments iron with neodymium. This allows for outstanding magnetization neodymium-based magnets.

As of today neodymium magnets are manufactured primarily in Asia. The leading producer and also exporter of these goods has become China, due to controlling most global rare earth deposits. In industrial production strong magnets two types of compounds are used: Sm₂Fe₁₇N₂ and Nd₂Fe₁₄B. These are neodymium magnets and nano-crystalline magnets, characterized not only a high level of magnetization, but high magnetic remanence. Utilization strong neodymium magnets is extremely varied. The most important categories of customers are companies manufacturing, offering electronic and electrical devices, in particular automotive companies, using efficient hybrid and electric motors. In the manufacturing of engines of this type neodymium magnets are applied from a mixture with compounds reducing efficiency losses of magnets under high temperature conditions such as dysprosium (Dy) or Terbium (Tb). Thanks to the use of the above-mentioned substances, magnetic coercivity has been greatly improved as well as total efficiency of strong magnets utilized in electrical devices with high nominal power. In the USA for many years now scientific research has been conducted by the REACT Institute, which is responsible for developing alternative alloys and materials. Several years ago, ARPA-E allocated 31.6 million dollars for funding projects and studies under the program on rare-earth substitutes, with the goal of creating substitutes for rare-earth metals as a replacement for natural reserves of elements, which are controlled by the Chinese government.

The production of neodymium magnets is based on two technologies. In Japan use a method of sintering powder mixtures, while in the USA fast cooling has become popular. Depending expectations, neodymium magnets can be made through the use of other elements, such as gallium, copper, or aluminum. Through such combinations it is possible to significantly modify magnetic characteristics of the magnet, its strength, as well as ability to work in high temperatures. It is even possible to make the magnet resistant to harsh atmospheric conditions, for example water, which can cause corrosion. However systematic enhancement of powder metallurgy processes led to achieving various material alloys, which greatly influenced the increase Curie temperature. Made using a modern manufacturing method neodymium-based magnet, achieves magnetization exceeding 1.6Tesla, meaning much higher for example the Earth's magnetic field.

A neodymium magnet is the strongest permanent magnet available on the market. Its incredibly strong magnet comes from the use of a mixture of iron, neodymium, and boron in the right proportions to form a tetragonal crystal structure of Nd₂Fe₁₄B. Such a combination of elements provides unprecedented magnetic properties, including exceptionally high magnetic anisotropy.
Neodymium magnets are typically produced as sinters, but it is also possible to produce neodymium magnets as so-called bonded magnets, using resins or plastics as a binder.

Neodymium magnets are sintered material made from iron, boron, neodymium, and other additives. The production process starts with selecting the correct amounts of each ingredient, which get melted and then cast. The resulting plates are crushed by a hydrogen method and then ground into a powder. The powder obtained this way is subjected to a densification process. The material gets formed by a pseudo-isostatic method under high pressure, which enables achieving high density and uniformity. During the forming process, the material gets magnetized using a magnetic field, which determines the magnetization direction for anisotropic magnets or without a magnetic field for isotropic magnets. Then, the shapes are sintered, and after this step, they undergo mechanical and surface treatment (including coating with protective layers). Finally, the resulting product gets magnetized in a magnetizer, becoming a magnet.

Rare earth magnets are magnets that contain at least in part metals known as earth metals. This group of elements includes: scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. The most famous of these elements for any magnet user are of course neodymium, which is used for the production of NdFeB magnets, and samarium, which is used for the production of SmCo magnets. Rare earth elements are not actually scarce in the Earth's crust. In fact, they are quite abundant, but their deposits are typically scattered and sparse, making it unprofitable to mine them. For this reason, they were called 'rare earth elements.'

Of course, the strongest will be the strongest magnet (e.g. N54 magnet). However, such materials are much more expensive than standard ones. A higher magnet will work at a greater distance, the magnetic field lines will emerge from the pole surface and shoot upward, and there is a chance of attracting an iron piece or another magnet from a longer distance. On the other hand, a flat magnet in practice will have greater lifting capacity, able to hold and lift elements with a larger surface area and dimensions.

Symbols used for neodymium magnets include letters and numbers, where letter symbols like M ('medium'), H ('high'), SH ('super high'), UH ('ultra high'), EH ('extra high') indicate the resistance strength of the magnet to loss of magnetism due to high temperature or influence of opposite magnetic fields, and figures like 35, 38, 42, 45, 48, 50, 52 represent the magnetic energy density of the magnet measured in MGsOe. For example, marking N52SH means that this is a neodymium magnet with a magnetic energy density of 52 Mega Gauss Oersteds - (MGsOe) and extraordinary resistance to demagnetization (SH stands for 'super high').

Neodymium magnets are typically available in simple shapes such as: cylinder, as well as a ring, meaning neodymium cylinders with a hole. These are commonly referred to as cylindrical magnets, but it should also be noted that both flat and ring magnets can be made with specially chamfered holes to allow for the embedding, flush with the surface, of a screw or bolt head. There is also the option to make neodymium magnets in the shape of a sphere, as well as so-called segmented (arc) magnets, which are cut sections of a ring. You can also order magnets in shapes like trapezoids or other geometric figures, provided that the shape can be cut with an electrodischarge machine without breaking the magnet's shape during the process. The brittleness of neodymium magnets limits the ability to produce complex shapes, for example, threads cannot be directly made in the magnet itself.

Neodymium magnets made from the compound an alloy of iron, boron, and neodymium are sintered made from iron, boron, and neodymium. In reality, the composition of a neodymium magnet contains only about thirty percent neodymium, and thanks to its atomic structure, these magnets are so strong.

To magnetize a magnet, so-called magnetizers are used, which are machines where a sufficiently large static electromagnetic field can be generated. After increasing the field (current intensity) to a point called saturation, further increases are ineffective as they do not enhance the magnetic induction of the magnet. The external field is then reduced to zero. The properties of neodymium magnets, made from magnetically hard materials, ensure that after the field is turned off, the magnetization value does not drop to zero but stabilizes at the point Br, which is called remanence induction, or the point of residual magnetism. The magnetizing process is best described by the first quadrant of the magnetic hysteresis loop.

Yes, there are several ways to remagnetize neodymium magnets. The simplest method is to heat the magnet first above the defined maximum working temperature for the magnetic material, usually around 80 degrees Celsius, which will cause partial demagnetization, and then heat it above the Curie temperature, at which point the ferromagnetic material becomes paramagnetic, resulting in complete demagnetization. Other methods for demagnetizing neodymium magnets include applying a sufficiently large constant and opposite magnetic field or subjecting the magnet to an alternating magnetic field.

Neodymium magnets are widely used in many electrical devices: meters, alarm systems, monitors, drones. The main industries where neodymium magnets are used include: toy.

The most important criterion for selecting neodymium-based magnets will be their purpose. Factors to consider include temperature conditions, weather conditions, and finally, the force with which the magnet is supposed to work. The strength of neodymium magnets is often given as lifting capacity in kilograms. It is important to note that this value is measured in laboratories, under ideal conditions, with perfect contact between the magnet and the ferromagnetic substrate, and the direction of the force is perpendicular to the contact surface of the magnet. In case of doubts, please contact the advisors at Dhit sp. z o.o. via the phone listed under contact.

Neodymium magnet shows strong interaction primarily iron and all alloys containing it, as well as metals like gadolinium, nickel, erbium, cobalt, and dysprosium. Whether a particular element is more or less easily attracted by a magnet also depends on the shape of the element. In a long element, such as an iron nail, when it is magnetized by the magnetic field of a permanent magnet, the poles will quickly form, meaning that one end of the nail will be ‘N’ and the other ‘S’. However, if the same nail is melted and shaped into a ball, it will be more difficult to pick it up using a magnetic field, especially when the ball is in motion.

No, it will not double.
The magnetic flux density is the amount of magnetic flux per unit area. While the flux density will become slightly stronger when two magnets are placed vertically on top of each other, since the surface area remains the same, there will be no significant difference. For example, if two magnets of size MW 10mm x 10mm are placed on top of each other, the magnetic flux density will be almost the same as for a single magnet of size MW 10x10 mm.

Magnetism is permanent. Strictly speaking, magnetism weakens over the years, but the demagnetization is so minimal that even after several decades, no significant weakening is felt. Therefore, neodymium magnets are generally considered insensitive to demagnetization and are called permanent magnets. Demagnetization is more likely to occur due to temperature changes and repulsive load rather than the passage of time. Magnets made from Alnico material may require remagnetization because they are more prone to demagnetization due to repulsive loads.

Magnesium is a chemical element with the symbol Mg, known for its exceptional properties such as lightness and corrosion resistance. In the context of interaction with magnets, the situation is more complex compared to ferromagnetic materials like iron or nickel.

Key points:
Magnesium is paramagnetic, meaning it reacts to a magnetic field, but the force of attraction is very weak.
Under normal conditions, magnets do not noticeably attract magnesium, as its paramagnetic properties are insufficient to create a significant force.
To observe the paramagnetism effect of magnesium, a very strong magnetic field and specialized equipment are needed.
Magnesium differs from materials like iron, cobalt, and nickel, which are ferromagnetic and strongly react to magnets.
Due to its properties, magnesium is used in various industries, but it is not used as a magnetic material.

Magnets are essential components of many devices and technologies, but how are they actually made? The process of creating them depends on the type of magnet we want to produce – permanent magnets, electromagnets, or temporary magnets. Here is an overview of the key stages of production.

Magnet manufacturing process:
Material selection: Permanent magnets are made from ferromagnetic materials such as iron, nickel, cobalt, or neodymium-iron-boron alloys (NdFeB).
Shaping: The material is shaped into the desired form through casting, sintering, or pressing magnetic powders.
Magnetization: The finished component is subjected to a strong magnetic field, which causes the magnetic domains in the material to align, giving it magnetic properties.
Finishing: Depending on the application, magnets can be further ground, coated with protective layers, or finished in other ways.
Quality control: Each magnet is tested for its magnetic properties and durability to meet user requirements.
Electromagnets: In the case of electromagnets, the process involves winding a conductor around a ferromagnetic core and connecting it to a power source.

Magnetic field therapy is an alternative healing method that is gaining popularity, though it still generates controversy. It involves using magnets or devices generating a magnetic field to improve health.

Key facts:
Magnetic therapy is primarily used for pain relief, tissue regeneration, and improving blood circulation.
There is research indicating that low-frequency magnetic fields may support the treatment of inflammation, bone fractures, or carpal tunnel syndrome.
The effectiveness of magnetic therapy has not been scientifically proven, and expert opinions are divided.
This therapy is generally safe, but may not be suitable for individuals with pacemakers, metal implants, or during pregnancy.
Always consult with a doctor before starting magnetic field therapy, especially in the case of serious conditions.

Neodymium magnets are the most advanced and powerful permanent magnets, differing from traditional magnets in several ways.

Differences between magnets:
Magnetic strength: Neodymium magnets (NdFeB) are several times stronger than traditional ceramic or ferrite magnets.
Composition: Made from neodymium, iron, and boron, whereas traditional magnets are usually ferrite.
Size: Neodymium magnets can be very small yet extremely strong.
Application: Neodymium magnets are used in modern technologies such as electric motors, hard drives, and medical devices.
Durability: Neodymium magnets are more brittle and less resistant to high temperatures than ferrite magnets, requiring protective coatings.

The strongest magnets available on the market are neodymium magnets (NdFeB). They are widely used in technologies requiring high magnetic strength.

Why are neodymium magnets the strongest?
High magnetic strength: They are capable of generating a very strong magnetic field, even in small sizes.
Modern technologies: Used in devices like electric motors, wind turbines, and speakers.
Compactness: Due to their strength, they can replace larger and weaker magnets.
Alternative: Another type of strong magnet is samarium-cobalt magnets (SmCo), which are more resistant to high temperatures but less common and more expensive.

Anisotropic magnets are formed in the presence of an external magnetic field, which aligns the magnetizing material along the field lines. These magnets are magnetized in one direction, making them stronger. In contrast, isotropic magnets do not require an external field, and their magnetization occurs only at the end of the process. Isotropic magnets are less magnetic, but can be magnetized in any direction, allowing for creating magnets with multiple poles.
More information on magnetic materials can be found on the technology page.

Neodymium magnets are among the strongest permanent magnets. Neodymium magnets define three key parameters that affect their properties: remanence, coercivity, and maximum energy product (BHmax).

Remanence (Br) is the maximum magnetic induction that the magnet can retain after the magnetic field is removed. Neodymium magnets typically have a Br value ranging from 1.1 to 1.4 T.

Coercivity (Hc) is the magnetic field required to erase the remanent magnetization. For neodymium magnets, it typically ranges from 800 to 2000 kA/m.

Maximum energy product (BHmax) is a measure of the energy a magnet can deliver per unit volume. The maximum energy product for neodymium magnets is between 200 and 400 kJ/m³.

These parameters are measured using specialized devices such as gaussmeters, teslameters, and magnetometers. More information can be found on the technology page.

The density of a neodymium magnet is an important technical parameter that determines its mass relative to its volume. The higher the density, the heavier the neodymium magnet.

Here are density values for various magnetic materials:
Water: 1.0 (reference value)
Ferrite magnet: around 4.8
Neodymium magnet: around 7.5
Alnico magnet: around 7.3
Iron: 7.9

Neodymium magnets are heavier than other magnetic materials, making them ideal for applications requiring high magnetic power.

Neodymium magnets, also known as neodymium-iron-boron magnets, were invented by a team of scientists from Japan in 1984. The team included Shunichi Miyazawa, Kiyoshi Watanabe, and Jiro Fujita. The discovery took place at the Rare Earth Research Institute in Japan.

Neodymium magnets became a technological breakthrough due to their exceptional magnetism and relatively low mass compared to traditional magnets. As a result, they have found widespread use in many industries, including electronics, automotive, medicine.

There are no materials that can completely block a magnetic field, but some materials that can significantly reduce its impact. These materials are called magnetic shields.

The most commonly used material for shielding is iron, which has very good magnetic conductivity. Other materials, such as stainless steel, cobalt, nickel, or copper, can also act as magnetic shields, but their effectiveness is lower.

Shielding works by placing a material with high magnetic permeability between the source of the field and the protected area. Such materials create a so-called Faraday cage, which changes the direction of the magnetic field lines and reduces their effect on the protected space.

Yes, every magnet has at least two magnetic poles. Modern magnets can be magnetized multipolar, meaning they can have more than one pair of poles. The technical designation of such magnets is 4-pole, which refers to one, two, or three magnetic poles.

Isotropic magnets, formed without a magnetic field, can have multipolar structure. Anisotropic magnets, which are formed in a strong magnetic field, can also be magnetized multipolar, but only in a specified direction.

Every magnet always has an even number of poles, which is essential for its operation.

Magnets vary in their resistance to high temperatures. Here are the temperature ranges for different types of magnets:
Ferrite and samarium-cobalt magnets - from -60°C to 250°C.
Neodymium magnets - depending on the type, from -130°C to 230°C.
Alnico magnets - can withstand temperatures up to 550°C.

All magnets tolerate low temperatures well, but higher temperatures can lead to demagnetization. It is important to remember that overheating can result in a loss of attraction force and demagnetization.

A magnetic separator is an complex device consisting of multiple magnets that work in magnetic circuits. These circuits increase the magnetic field strength in selected areas. While it is possible to use a magnet instead of a separator, this will be an ineffective solution. Magnets without additional components are less effective. A magnetic separator is designed for working conditions and ensures high efficiency. More information about magnetic separators can be found on the magnetic separator page.

Yes, it is possible to make a one-sided magnetic roller that works as a filter in a heat pump. Magnetic rollers are made from neodymium magnets placed inside a steel tube, which allows fluid to flow in only one direction. These rollers are widely used in heating systems, heat pumps, and other industrial devices to remove magnetic impurities.

More information about magnetic separators can be found on the magnetic separator page.

Neodymium magnets attract ferromagnetic materials such as iron, nickel, and cobalt. Iron, nickel, and cobalt are heavily attracted to neodymium magnets. Steel is also strongly attracted by magnets, as it has ferromagnetic properties. Materials that do not respond to magnets include stainless steel 304 and acid-resistant steel 316L, often used in dental industries.

Markings of neodymium magnets include letters and numbers that define the magnetic properties of the magnet. Letters such as M – "medium", H – "high", SH – "super high", UH – "ultra high", EH – "extra high" indicate coercivity. Numbers like N35, N42, N52 define magnetic energy level, expressed in MGsOe. For example, N42SH means a magnet with a magnetic energy density of 42 MGsOe and high resistance to demagnetization. More information about magnets and their markings can be found in our technology guide.

Neodymium magnets do not affect pure gold, aluminum, or copper. These metals act oppositely in the presence of an alternating magnetic field due to eddy currents. However, neodymium magnets strongly attract elements like iron, nickel, cobalt. More information about magnets and their properties can be found on the technology page.

A permanent magnet, also known as a hard magnet, is a material with a high coercivity that, once magnetized, maintains its magnetic properties. After applying the appropriate magnetic field, the magnetic domains in the material align in one direction and remain in that position even after the field is turned off. Permanent magnets have coercivity HcJ of at least 24 kA/m, and the greater the coercivity, the greater the resistance to demagnetization. Such magnets are used in electrical devices, where resistance to magnetic fields is crucial. More information about magnets can be found on the technology page.

A magnet attracts iron because iron is one of the few ferromagnetic metals that possesses its own magnetic field. Ferromagnetic materials like iron, nickel (Ni), and cobalt (Co), have magnetic domains that direct their fields in one direction. When a magnet approaches iron, the magnet's field directs itself towards the magnetic fields of iron, increasing the attraction force.

Magnetic domains in ferromagnetic materials are small fragments where the magnetic field is directed in one constant direction. When a magnet is brought near, it strengthens the magnetic field in selected domains, causing the remaining domains to align in one direction, making iron attracted to the magnet.

Not true, both poles of a magnet have identical strength.
More about poles can be found on the enes magnet page.

Magnets are commonly used in bodywork repairs. This method requires a large metal ball and a neodymium magnet, allowing the dents to be removed without painting. For more details on the technology page.

Neodymium magnets are durable, losing less than 1% per decade, as long as they are exposed to high temperatures or moisture. Storing them in a dry environment ensures their longevity.

The sliding force of a magnet is the amount of energy needed to slide the magnet along a surface. It depends on friction and the magnet's strength. Check the calculator.

Magnets attract each other when their opposite poles are directed towards each other. This is the basic principle of magnetism, causing the magnetic force to act.

Neodymium magnets typically withstand temperatures from -130°C to up to 230°C, depending on the applied grade.

To boost its magnetic power, you should keep the magnet in proper conditions, apply additional magnetic fields, and use appropriate magnetic setups.

Neodymium magnets can last for many years, provided they are used correctly.

Neodymium magnets lose power very slowly. Typical power loss is around 1% per decade, as long as they are stored in appropriate conditions. More information can be found in the magnet durability section.

The PKWiU code for magnets is 26.80.99, which includes magnetic products. Detailed information can be found in the PKWiU magnets section.

"Magnetization through thickness" refers to the process in which the magnetic field passes through the thickest layer of the magnet, as opposed to through the length or width. This type of magnet are commonly used in industry, where strength in a particular direction is necessary.

Blocking the effect of a magnetic field requires the use of materials like mu-metal, which absorb the magnetic lines. No material that completely stops a magnetic field, but some materials can weaken its effect. More information can be found on the materials for blocking fields page.

Neodymium magnets are often coated with protective coatings to prevent oxidation, especially in humid conditions. The most popular coatings are nickel and chrome, which extend the lifespan of the magnets. Learn more about coatings on the magnet coatings page.

Magnets repel each other when their identical poles are directed towards one another. This phenomenon results from the laws of physics. When the north pole of one magnet is pointing towards the north pole of another (or the south pole towards the south pole), these magnets bounce off. This is a key principle of magnetism.

Neodymium magnets are compounds made of neodymium, boron, and iron. Their tariff code is 8505199089. This means they are classified as magnets in the international customs coding system. It is important to note that the production of these magnets is globally widespread, with China being the main producer. Neodymium magnets are also made in countries such as the United States, Russia, and others to meet the growing demand for these exceptionally strong magnets.

The poles of a magnet can be determined using a magnetic tester or a magnetometer. In a compass, the needle points to the N and S. More information can be found in the magnetic field section.

Temperature affects the strength of magnets. Neodymium magnets may lose strength above the Curie temperature. The operating range is from -130°C to as high as 230°C, depending on the type of magnet.

Neodymium magnets are protected to increase their durability. The most commonly used coatings are three-layer, which increase resistance to moisture. Learn more in the technology section.

Neodymium magnets can be damaged by moisture. Constant contact with water can lead to oxidation, unless the magnet has the proper protective layer. More on protecting magnets from moisture can be found in the moisture protection section.

Neodymium magnets are primarily composed of neodymium, iron, and boron. If they are not protected, they may corrode, especially in moist environments. For protection, most neodymium magnets receive a special protective layer, most commonly nickel, which protects them from oxidation. Plastic and gold coatings are also used, though less frequently.

Neodymium magnets are extremely strong, far stronger than other types of magnets. Their strength can cause hazards if we don’t exercise caution. Larger magnets can even break bones, if body parts get pressed by them. Always take precautions to prevent injury. Watch this video to see examples: YouTube.

Magnets can disrupt the operation of mobile phones, especially in the case of strong neodymium magnets. They can affect the operation of compasses, Hall sensors, and even touchscreens.

For safety, avoid storing your phone near strong magnets. More information can be found on the dangerous magnets page.

Mechanical work with magnets carries risks. The scraps after processing contaminate devices, which can cause malfunctions. The hardness and brittleness of the material complicates precise processing.

Most foreign objects, like magnets, are swallowed without complications and pass through the digestive tract. 80-90% of cases result in natural expulsion within 4-6 days. If a child swallows only one magnet or coin, giving them plenty of water and bread will help with the natural expulsion. When a child swallows two magnets, a problem may arise as they can stick together in the digestive tract. In such a case, you should consult a doctor and take an X-ray to check their location and condition.

The most important thing is to remain calm and give the child time, rather than seeking immediate help. More information can be found on the dangerous magnets page.

The neodymium magnet was discovered by Japanese scientist Sagawa Masato. He was the first to undertake studies related to the magnetic features of rare earth elements, conducting his work at Fujitsu Laboratories for about a decade. Later, moved to Sumimoto Special Metals, and it is claimed that it was there, in the early 80s, that he finally developed the technology and created the modern sintered neodymium magnet based on the compound Nd₂Fe₁₄B. Since then, there has been rapid development in this field.

Choosing the right neodymium magnet depends on many factors that are worth considering to ensure its effectiveness and safety:

Selection tips:
Magnetic force: Consider how much power is required for your application.
Size and shape: Ensure the magnet fits the space where it will be used.
Protective coating: Choose a magnet with a corrosion-resistant coating, such as nickel-plated.
Operating temperature: Neodymium magnets may lose their properties at high temperatures.
Application: Check if the magnet meets the requirements for industry, electronics, or household use.

Magnets on the fridge can be considered harmful due to the possibility of scratching the door of the fridge, especially when they are regularly moved. Moreover, exceptionally strong magnets potentially affect the electronics in some appliances.

Magnets should be removed from the fridge if they pose a risk of scratching its surface. Additionally, strong magnets can cause issues with the electronic systems of the fridge. Occasionally, it is advised to take them off to avoid permanent damage, particularly if they are being across the surface in a careless manner.

Magnet fishing is allowed in Poland, although the lack of specific regulations may cause uncertainties. In other countries, this is regulated by local law:
In the United States, magnet fishing is generally permitted with exceptions, e.g., in South Carolina, where the law prohibits removing artifacts from state waters.
In Indiana, starting in 2025, a permit is required for magnet fishing.
In the UK and the USA, there are restrictions on magnet fishing with regard to removing historical artifacts.
To avoid issues, consult with local authorities before starting this activity.

Magnets can be harmful to the fridge if they scratch its surface. Constant shifting magnets could lead to scratches. However, standard use of magnets seldom is the cause of serious damage.

To remove the security clips from clothing, you can use a clip magnet, such as the Magnes Ultra. Apply the magnet onto the clip and move it until the clip comes off.

Other methods include using hand tools or a lighter, heating the plastic on the protruding part, then using pliers or scissors to cut the clip off, be cautious to avoid damage.

If the security uses tape, try scraping the tape, heating it with a hair dryer and using a soft tool.

For more difficult security types, consult with store assistance. More information can be found on the anti-theft clips page.

Magnets may not attract effectively if the surface is not suitable or if the there’s a barrier between the magnet and the surface. Check the details in our coating guide.

It is not recommended to place magnets on the fridge because they can damage its finish. Moreover, large magnets can distort thin metal surfaces of refrigerators.

Magnets can destroy the fridge if their movement causes scuff marks to the finish of the fridge. Additionally, exceptionally strong magnets can interfere with mechanical systems in some modern refrigerators.

If you plan to use neodymium magnets for treasure hunting, there are a few important things to keep in mind when choosing the right model.
First, neodymium magnets can be divided into two types: based on the design and method of securing the rope. As for securing, magnets mounted from the top are ideal for fishing from docks, bridges, or checking wells. They are also perfect for fishing from boats.
Models like DHIT Magnet GOLD come in five strengths, from 120 kg to 600 kg. On the other hand, magnets with double attachment, like DHIT Magnet GOLD, are the most versatile and allow for fishing both from above and the sides (the two handles can be screwed together at the sides for pair hunting).
As for popularity, the most commonly chosen models are: F200x2 GOLD, F300x2 GOLD, and F550x2. If you have doubts about choosing the right magnet, feel free to contact us. We are happy to advise and help you choose the model that best meets your expectations and goals.
More information about search magnets can be found on the which magnet to use for treasure hunting? or in the search magnets category.