FAQ - questions and answers about neodymium magnets
A neodymium magnet – what is it and how does it work? What do we use these strong magnets for?
Dive in the world of neodymium magnets – discover their strength, applications, and secrets! We provide detailed answers to the most frequently asked questions, helping you better understand how they function and for what purposes they can be used. Find out why neodymium magnets are considered the strongest in the world and how using them can impact your projects.
Shipping, delivery, and returns
Find answers to questions about shipping methods, costs, delivery times, and return policies. Learn how to manage your online orders without hassle.
We accept traditional bank transfers, fast mBank transfers, and we also ship packages with cash on delivery. More information can be found in the transport section.
Orders are shipped every business day, and deliveries arrive within 24-48 hours from the moment payment is confirmed. For cash on delivery, shipments are sent every business day around 4 PM, and InPost parcel lockers around 5 PM.
Working with neodymium magnets
Learn how to safely and effectively handle neodymium magnets – from mounting to separation and usage in various projects.
Self-adhesive magnets allow easy attachment of a magnet to non-magnetic surfaces such as wood and other non-magnetic materials. We offer both block shaped magnets and round magnets with a self-adhesive layer.
Usually, these magnets come in packages where one side is coated with the adhesive on the north pole, and the other side on the south pole. This allows for attraction when needed, e.g., to create clasps or connectors.
Our self-adhesive magnets are made with foam-based adhesive, which is also available separately in the form of double-sided adhesive stickers. This high-performance adhesive provides excellent shear strength, preventing shifting and edge lifting.
To use the magnet, simply peel off the paper from the adhesive and stick it to the chosen spot. The adhesive is strong enough to allow repositioning of the magnet, enabling precise alignment. Once the magnet is in the right position, press it firmly to ensure even bonding.
We recommend waiting 24-48 hours after adhering the magnet so the adhesive can fully cure before applying any force to the joint.
Usually, these magnets come in packages where one side is coated with the adhesive on the north pole, and the other side on the south pole. This allows for attraction when needed, e.g., to create clasps or connectors.
Our self-adhesive magnets are made with foam-based adhesive, which is also available separately in the form of double-sided adhesive stickers. This high-performance adhesive provides excellent shear strength, preventing shifting and edge lifting.
To use the magnet, simply peel off the paper from the adhesive and stick it to the chosen spot. The adhesive is strong enough to allow repositioning of the magnet, enabling precise alignment. Once the magnet is in the right position, press it firmly to ensure even bonding.
We recommend waiting 24-48 hours after adhering the magnet so the adhesive can fully cure before applying any force to the joint.
Neodymium magnets are among the strongest available on the market. They stand out for their numerous advantages, making them popular in a variety of applications:
Key Features:
Extremely strong magnetic force, allowing effective attraction even from a distance.
Compact sizes, meaning even small magnets possess immense power.
High resistance to demagnetization under standard usage conditions.
A wide range of applications, from industrial to everyday household uses.
However, they require careful handling to avoid damage or injuries.
Key Features:
Extremely strong magnetic force, allowing effective attraction even from a distance.
Compact sizes, meaning even small magnets possess immense power.
High resistance to demagnetization under standard usage conditions.
A wide range of applications, from industrial to everyday household uses.
However, they require careful handling to avoid damage or injuries.
To choose the best magnet, it’s worth doing thorough research and considering the size and pull strength. Start by estimating what size of the magnet you need, for example, whether you want to use a flat plate magnet or a magnet with a hole. Remember that a bigger magnet is stronger, but it can also be more dangerous to use. Next, pay attention to the load capacity, which is crucial for selecting a magnet for your project. You can find more information about pull force in the product specifications.
Magnets are essential in many projects, both to improve functions at home and as part of products for sale. In some cases, gluing them is necessary. Here are a few tips to help you succeed on the first try.
Application Tips:
Always read the instructions for the adhesive you are using.
Before applying the adhesive, ensure the surfaces are clean. Residue, grease, or dirt can create a barrier, making it harder for the magnet to adhere correctly.
It is recommended to sand the smooth magnet surface, which improves the glue’s adhesion.
Gluing magnets to plastic can be more challenging due to issues achieving good adhesive grip. Consult the adhesive manufacturer’s technical support for advice related to plastic.
The best choice of adhesive is usually a two-part epoxy resin, which works in most cases. Recommended adhesives include Loctite Plastic Bonder Epoxy, E6000 Adhesive, Super Glue, Gorilla Glue, and many others.
Avoid using hot glue guns because the high temperature can demagnetize magnets.
Application Tips:
Always read the instructions for the adhesive you are using.
Before applying the adhesive, ensure the surfaces are clean. Residue, grease, or dirt can create a barrier, making it harder for the magnet to adhere correctly.
It is recommended to sand the smooth magnet surface, which improves the glue’s adhesion.
Gluing magnets to plastic can be more challenging due to issues achieving good adhesive grip. Consult the adhesive manufacturer’s technical support for advice related to plastic.
The best choice of adhesive is usually a two-part epoxy resin, which works in most cases. Recommended adhesives include Loctite Plastic Bonder Epoxy, E6000 Adhesive, Super Glue, Gorilla Glue, and many others.
Avoid using hot glue guns because the high temperature can demagnetize magnets.
For mounting license plates, it is recommended to use two MPL 40x18x10 / N38 - neodymium magnet magnets under the bumper and two MPL 40x20x5 / N38 - neodymium magnet magnets under the license plate. It is important to attach a thin metal sheet under the plate to cover the magnets and protect them from detaching due to heat and vibrations. Since license plates are made of aluminum and are not magnetic, the sheet will help keep the magnets in the desired position. Additionally, rivets on the plate can give the illusion that the plate is permanently attached, offering extra theft protection.
A magnet attracts iron because iron is a highly magnetic material. Its atomic structure allows for easy anchoring with the poles of the magnet.
Usually, a magnet does not attract aluminum because aluminum is not strongly magnetic metals. However, in specific conditions, such as in the presence of extreme magnets, aluminum may exhibit weak magnetic properties.
A magnet attracts metal because some metals, such as steel, have magnetically attractive properties. When a neodymium magnet comes close to a steel surface, magnetic polarizations are created that bond the magnet with 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 physical 'S' pole of the magnet.
Use a smartphone app: There are apps that help identify a magnet’s poles.
Use a teslameter: A teslameter measures the induction value and indicates which pole is which.
Magnetic pole detector: You can also purchase a magnetic pole detector, which allows you to conveniently identify the poles. More information about magnetic orientations can be found at NS magnets.
Use a smartphone app: There are apps that help identify a magnet’s poles.
Use a teslameter: A teslameter measures the induction value and indicates which pole is which.
Magnetic pole detector: You can also purchase a magnetic pole detector, which allows you to conveniently identify the poles. More information about magnetic orientations can be found at NS magnets.
To magnetize a neodymium magnet, you need to carry out a process called "magnetic induction." There are several ways to magnetize a magnet:
Using a strong neodymium magnet: Place the magnet next to a strong neodymium magnet so that slide them, matching their poles.
Using electric current: Connect the magnet to electrical wires, causing the current to induce a magnetic field.
Using a magnetic induction device: Magnetic induction devices available in electronics stores allow you to magnetize the magnet using a strong magnetic field.
Important: The process of magnetizing a neodymium magnet can be difficult if the magnet is weakened or deformed. More about magnetization methods and pole directions can be found in our technology guide.
Using a strong neodymium magnet: Place the magnet next to a strong neodymium magnet so that slide them, matching their poles.
Using electric current: Connect the magnet to electrical wires, causing the current to induce a magnetic field.
Using a magnetic induction device: Magnetic induction devices available in electronics stores allow you to magnetize the magnet using a strong magnetic field.
Important: The process of magnetizing a neodymium magnet can be difficult if the magnet is weakened or deformed. More about magnetization methods and pole directions can be found in our technology guide.
A magnet and a magnetic holder differ in design and purpose. A magnet is an element made of magnetic material that attracts ferromagnetic metals such as ferromagnetic metals. It is used in various fields, such as industry.
A magnetic holder is a magnet with a housing that protects it from damage, such as mechanical damage. Thanks to its special design, a magnetic holder can have additional features, like threads or handles, making assembly and usage easier. The greatest advantage of holders is their higher load capacity, but they have a shorter range of action. More information about magnets and magnetic holders can be found at technology.
A magnetic holder is a magnet with a housing that protects it from damage, such as mechanical damage. Thanks to its special design, a magnetic holder can have additional features, like threads or handles, making assembly and usage easier. The greatest advantage of holders is their higher load capacity, but they have a shorter range of action. More information about magnets and magnetic holders can be found at technology.
To remove dents from car body panels, there are several methods. One involves using a magnet together with a large ferromagnetic ball on the other side of the sheet. This allows bending the sheet metal, but the method only works if the sheet thickness is above 0.6 mm.
Another method is the PDR technique (dent repair without painting), which involves bending the sheet metal with a special kit (cost around 500 PLN). This time-consuming method allows dents to be fixed without repainting.
Alternatively, you can use a PDR 1000 device, which generates a magnetic field and is dedicated to removing dents in flexible steel body panels. This solution is quick, professional, and excellent for car workshops. More information about magnets can be found in our technology guide.
Another method is the PDR technique (dent repair without painting), which involves bending the sheet metal with a special kit (cost around 500 PLN). This time-consuming method allows dents to be fixed without repainting.
Alternatively, you can use a PDR 1000 device, which generates a magnetic field and is dedicated to removing dents in flexible steel body panels. This solution is quick, professional, and excellent for car workshops. More information about magnets can be found in our technology guide.
The RM R6 GOLF - 13000 Gs / N52 DHIT brand magnet is one of the best magnets for anti-theft clips, with a high power of 12000-13000 GS. Thanks to its unique "cylindrical" design with a center recess, the magnet works twice on clips of different shapes, enabling their quick and easy removal. The magnet is simple to use and intuitive, and its installation on the checkout counter is very straightforward. It is a modern and effective tool recommended for stores, such as outlets. Perfect for retailers who value efficiency and speed. More information about magnets for removing anti-theft clips can be found at anti-theft clips.
No, you should not solder or weld neodymium magnets. High temperature generated during soldering or welding can demagnetize magnets, leading to removal of their magnetic properties. Additionally, there is a fire risk during the process. When magnets burn, toxic substances are released, posing a health hazard and potentially causing poisoning from fumes. Instead, appropriate techniques should be used that do not affect their magnetism.
Separating neodymium magnets requires precision and caution. The best method is to use aids like plates or dedicated magnet separators.
Start by sliding one magnet to the side, rather than pulling it away. Secure the magnets to prevent them from suddenly joining. Find more information at separation tools.
Start by sliding one magnet to the side, rather than pulling it away. Secure the magnets to prevent them from suddenly joining. Find more information at separation tools.
For cutting and grinding neodymium magnets, special diamond discs with intensive water cooling are used. Precision and specialist knowledge are key. More information can be found at diamond tools.
Yes, combining magnets can increase their pull force, but only under certain conditions. However, the effect is limited by the physical properties of magnetic materials.
Magnet applications
Get inspired and see examples of using neodymium magnets at home, in industry, and in creative projects.
Our offer includes a wide variety of magnets to meet the needs of both individual customers and businesses:
Types of Magnets:
Neodymium Magnets: The strongest on the market, ideal for advanced applications.
Ferrite Magnets: An economical solution for less demanding projects.
Rubber-Coated Magnets: Durable and suitable for delicate surfaces.
Specialized Magnets: For sensors, magnetic separators, or holders.
Magnets in Various Shapes: Cylinders, cubes, rings, and custom forms made to order.
Types of Magnets:
Neodymium Magnets: The strongest on the market, ideal for advanced applications.
Ferrite Magnets: An economical solution for less demanding projects.
Rubber-Coated Magnets: Durable and suitable for delicate surfaces.
Specialized Magnets: For sensors, magnetic separators, or holders.
Magnets in Various Shapes: Cylinders, cubes, rings, and custom forms made to order.
No, an ordinary magnet cannot effectively take the place of a advanced magnetic separator. Although in theory it is feasible, in reality using an ordinary magnet instead of a specialized magnetic separator would be unproductive. Magnetic separators are advanced devices that are adapted to particular conditions and work conditions, and they often come with systems that facilitate cleaning and mounting components. In industries such as the food sector, where there are strictly defined standards for cleansing products using a magnetic field, applying an ordinary magnet in place of a separator may not only be insufficient, but also cause problems during an audit by authorities.
Fridge magnets are mainly made from magnetic foil, which are simply cut and decorated. Another popular material is epoxy resin, used to achieve durable finishes. Modeling clay allows creating handmade magnets, and paper is useful for making magnets with pictures. Additionally, industrial glues are often used in magnet production to attach decorative elements.
Neodymium magnets are widely used in many fields, such as electronics, the automotive industry, medicine, agriculture, and more. They can be found in, among others, speakers, electric motors, magnets used in treating diseases, and even magnets used in agriculture to guide commands for agricultural machinery.
Neodymium magnets are employed in electronics, medicine, and automotive, such as speakers, electric motors, and even magnetotherapy.
Neodymium magnets are widely used in electronics, medicine, and the automotive sector. They are used in converters, wind turbines, and surgical tools. For more examples, see magnet applications.
Magnets attach to the fridge because the majority of fridges have iron surfaces. Iron elements on the fridge serve as magnet-attracting surfaces, allowing magnets to maintain grip.
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 children’s work,
Magnet UMP 75x25 [M10x3] F200 GOLD, a universal choice with a holding force of 290 kg,
Magnet UMP 94x28 [M10] F300 GOLD, for more demanding tasks.
For more details, see which magnet for treasure hunting.
Magnet UMP 67x28 [M8+M10] F120 GOLD, ideal for children’s work,
Magnet UMP 75x25 [M10x3] F200 GOLD, a universal choice with a holding force of 290 kg,
Magnet UMP 94x28 [M10] F300 GOLD, for more demanding tasks.
For more details, see which magnet for treasure hunting.
Making your own fridge magnets is simple. You will need any magnet, glue, and a decorative surface (e.g., a wooden figurine). Apply glue to the magnet and that’s it!
Technical information about magnets
Detailed technical data on neodymium magnets – from grades and protective coatings to their properties and applications.
Neodymium magnets operate in the range of temperatures from -130°C up to even 230°C, depending on the applied grade.
The interaction of two magnetic poles is a key aspect of magnet functionality, easily observed in practice:
Basic Principles:
Opposite poles (N and S) attract, forming a stable connection.
Like poles (N and N or S and S) repel, making it challenging to bring them together.
The interaction strength depends on the distance between the poles and the magnet's power.
Magnetic fields can affect conductors and some electronic devices, so caution is advised.
Directed use of magnetic poles allows efficient application in technologies such as electric motors or separators.
Basic Principles:
Opposite poles (N and S) attract, forming a stable connection.
Like poles (N and N or S and S) repel, making it challenging to bring them together.
The interaction strength depends on the distance between the poles and the magnet's power.
Magnetic fields can affect conductors and some electronic devices, so caution is advised.
Directed use of magnetic poles allows efficient application in technologies such as electric motors or separators.
Magnesium is a chemical element with the symbol Mg, known for its unique properties such as lightness and corrosion resistance. In the context of magnetic interaction, the situation is more complex compared to ferromagnetic materials like iron or nickel.
Key facts:
Magnesium is paramagnetic, meaning it responds to a magnetic field, but the attraction is very weak.
Under normal conditions, magnets do not noticeably attract magnesium because its paramagnetic properties are too weak to generate significant force.
To observe magnesium's paramagnetic effect, a very strong magnetic field and specialized equipment are required.
Magnesium differs from materials such as iron, cobalt, or nickel, which are ferromagnetic and strongly react to magnets.
Due to its properties, magnesium is used in many industrial applications but is not utilized as a magnetic material.
Key facts:
Magnesium is paramagnetic, meaning it responds to a magnetic field, but the attraction is very weak.
Under normal conditions, magnets do not noticeably attract magnesium because its paramagnetic properties are too weak to generate significant force.
To observe magnesium's paramagnetic effect, a very strong magnetic field and specialized equipment are required.
Magnesium differs from materials such as iron, cobalt, or nickel, which are ferromagnetic and strongly react to magnets.
Due to its properties, magnesium is used in many industrial applications but is not utilized as a magnetic material.
Magnets are essential components of many devices and technologies, but how are they actually made? The process varies depending on the type of magnet being produced – permanent magnets, electromagnets, or temporary magnets. Here is an overview of the key production steps.
Magnet production process:
Material selection: Permanent magnets are made from ferromagnetic materials such as iron, nickel, cobalt, or alloys like neodymium, iron, and boron (NdFeB).
Shaping: The material is formed into the desired shape through casting, sintering, or pressing magnetic powders.
Magnetization: The finished element is exposed to a strong magnetic field, aligning the magnetic domains in the material to give it magnetic properties.
Final processing: Depending on the intended use, magnets may be polished, coated with protective layers, or finished in other ways.
Quality control: Every magnet is tested for its magnetic properties and durability to ensure it meets user requirements.
Electromagnets: In the case of electromagnets, the process involves winding a conductor around a core made of ferromagnetic material and connecting it to a power source.
Magnet production process:
Material selection: Permanent magnets are made from ferromagnetic materials such as iron, nickel, cobalt, or alloys like neodymium, iron, and boron (NdFeB).
Shaping: The material is formed into the desired shape through casting, sintering, or pressing magnetic powders.
Magnetization: The finished element is exposed to a strong magnetic field, aligning the magnetic domains in the material to give it magnetic properties.
Final processing: Depending on the intended use, magnets may be polished, coated with protective layers, or finished in other ways.
Quality control: Every magnet is tested for its magnetic properties and durability to ensure it meets user requirements.
Electromagnets: In the case of electromagnets, the process involves winding a conductor around a core made of ferromagnetic material and connecting it to a power source.
Magnetic field therapy is an alternative treatment method gaining popularity, although it remains controversial. It involves using magnets or devices generating magnetic fields to improve health.
Key facts:
Magnetic therapy is primarily used for pain relief, tissue regeneration, and improved blood circulation.
Studies suggest that low-frequency magnetic fields may support treatment of inflammation, bone fractures, or carpal tunnel syndrome.
The effectiveness of magnetic therapy has not been conclusively proven scientifically, and expert opinions are divided.
This therapy is generally safe but may not be suitable for people with pacemakers, metal implants, or during pregnancy.
Always consult a doctor before starting magnetic field therapy, especially for serious health conditions.
Key facts:
Magnetic therapy is primarily used for pain relief, tissue regeneration, and improved blood circulation.
Studies suggest that low-frequency magnetic fields may support treatment of inflammation, bone fractures, or carpal tunnel syndrome.
The effectiveness of magnetic therapy has not been conclusively proven scientifically, and expert opinions are divided.
This therapy is generally safe but may not be suitable for people with pacemakers, metal implants, or during pregnancy.
Always consult a doctor before starting magnetic field therapy, especially for serious health conditions.
Neodymium magnets are the most advanced and powerful permanent magnets, differing from traditional magnets in several key aspects.
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 typically ferrite.
Size: Neodymium magnets can be very small while remaining extremely strong.
Applications: Neodymium magnets are used in advanced 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.
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 typically ferrite.
Size: Neodymium magnets can be very small while remaining extremely strong.
Applications: Neodymium magnets are used in advanced 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 can generate very strong magnetic fields even in small sizes.
Advanced technologies: Used in devices such as electric motors, wind turbines, and speakers.
Compactness: Their strength allows them to replace larger, weaker magnets.
Alternative: Another type of strong magnets are samarium-cobalt (SmCo) magnets, which are more resistant to high temperatures but less common and more expensive.
Why are neodymium magnets the strongest?
High magnetic strength: They can generate very strong magnetic fields even in small sizes.
Advanced technologies: Used in devices such as electric motors, wind turbines, and speakers.
Compactness: Their strength allows them to replace larger, weaker magnets.
Alternative: Another type of strong magnets are samarium-cobalt (SmCo) magnets, 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 orients the material along the field lines. These magnets are magnetized in one direction, making them stronger. On the other hand, isotropic magnets are formed without an external field, and their magnetization takes place only at the end of the process. Isotropic magnets are less magnetic but can be magnetized in any direction, enabling the production of magnets with multiple poles.
More information about types of magnetic materials can be found at technology.
More information about types of magnetic materials can be found at technology.
Neodymium magnets are among the strongest permanent magnets. Neodymium magnets are defined by three key parameters that affect their properties: remanence, coercivity (Hc), and maximum energy product (BHmax).
Remanence (Br) is the maximum magnetic induction a magnet can maintain after the external magnetic field is removed. Neodymium magnets typically have a Br of 1.1 to 1.4 T.
Coercivity (Hc) is the magnetic field required to erase the remanent magnetization. For neodymium magnets it is usually from 800 to 2000 kA/m.
Maximum energy product (BHmax) measures the energy the magnet can deliver per unit volume. For neodymium magnets, BHmax is typically from 200 to 400 kJ/m3.
To measure these parameters, specialized devices such as gaussmeters, teslameters, and magnetometers are used. More info can be found at technology.
Remanence (Br) is the maximum magnetic induction a magnet can maintain after the external magnetic field is removed. Neodymium magnets typically have a Br of 1.1 to 1.4 T.
Coercivity (Hc) is the magnetic field required to erase the remanent magnetization. For neodymium magnets it is usually from 800 to 2000 kA/m.
Maximum energy product (BHmax) measures the energy the magnet can deliver per unit volume. For neodymium magnets, BHmax is typically from 200 to 400 kJ/m3.
To measure these parameters, specialized devices such as gaussmeters, teslameters, and magnetometers are used. More info can be found at technology.
The density of a neodymium magnet is an important technical parameter that describes its specific gravity. The higher the density, the heavier the neodymium magnet.
Below are density values for various magnetic materials:
Water: 1.0 (reference value)
Ferrite magnet: about 4.8
Neodymium magnet: about 7.5
Alnico magnet: about 7.3
Iron: 7.9
Neodymium magnets are denser than other magnetic materials, making them ideal for various industrial uses, such as motors or generators.
Below are density values for various magnetic materials:
Water: 1.0 (reference value)
Ferrite magnet: about 4.8
Neodymium magnet: about 7.5
Alnico magnet: about 7.3
Iron: 7.9
Neodymium magnets are denser than other magnetic materials, making them ideal for various industrial uses, such as motors or generators.
Neodymium magnets, also known as neodymium-iron-boron magnets, were invented by a team of Japanese scientists in 1984. The team included Shunichi Miyazawa, Kiyoshi Watanabe, and Jiro Fujita. The discovery took place at the Institute for Rare Earths Research in Japan.
Neodymium magnets became a technological breakthrough thanks to their high magnetic strength and relatively small mass compared to traditional magnets. Because of this, they have found wide application in many industries, including electronics, automotive, and medicine.
Neodymium magnets became a technological breakthrough thanks to their high magnetic strength and relatively small mass compared to traditional magnets. Because of this, they have found wide application in many industries, including electronics, automotive, and medicine.
There are no materials that can completely block a magnetic field, but some materials that can significantly reduce its effect. Such materials are called magnetic shields.
The most commonly used shielding material is iron, which has very good magnetic permeability. Other materials, such as stainless steel, cobalt, nickel, and copper, can also act as magnetic shields, but they are less effective.
Shielding involves placing a material with high magnetic permeability between the field source and the protected area. These materials form a so-called Faraday cage, which changes the direction of magnetic field lines and reduces their impact on the protected space.
The most commonly used shielding material is iron, which has very good magnetic permeability. Other materials, such as stainless steel, cobalt, nickel, and copper, can also act as magnetic shields, but they are less effective.
Shielding involves placing a material with high magnetic permeability between the field source and the protected area. These materials form a so-called Faraday cage, which changes the direction of magnetic field lines and reduces their impact on the protected space.
Yes, every magnet has at least two poles. Modern magnets can be multi-pole magnetized, meaning they have more than one pair of poles. The technical designation of such magnets is 2-pole, which indicate respectively one, two, or three pairs of poles.
Isotropic magnets, formed without a magnetic field, can have a many poles. Anisotropic magnets, formed in a strong magnetic field, can also be multi-pole magnetized, but only in a specific direction.
Each magnet always has an even number of poles, which is key to its operation.
Isotropic magnets, formed without a magnetic field, can have a many poles. Anisotropic magnets, formed in a strong magnetic field, can also be multi-pole magnetized, but only in a specific direction.
Each magnet always has an even number of poles, which is key to its operation.
Magnets vary in their resistance to high temperature. Here are 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 80-230°C.
Alnico magnets – withstand temperatures up to 550°C.
All magnets handle low temperatures well, but higher temperatures can cause demagnetization. Remember that overheating magnets can result in reduced holding force and demagnetization.
Ferrite and samarium-cobalt magnets – from -60°C to 250°C.
Neodymium magnets – depending on the type, from -130°C to 80-230°C.
Alnico magnets – withstand temperatures up to 550°C.
All magnets handle low temperatures well, but higher temperatures can cause demagnetization. Remember that overheating magnets can result in reduced holding force and demagnetization.
A magnetic separator is a sophisticated device composed of multiple magnets working in so-called magnetic circuits. These circuits enhance the intensity of the magnetic field in selected areas. Although it is possible to use a magnet instead of a separator, this would be an ineffective solution. Magnets alone will not have enough power to replace the separator. A magnetic separator is adapted to requirements and ensures high effectiveness. More information about magnetic separators can be found at magnetic separator.
Yes, it is possible to create a single-sided magnetic roller that acts as a filter in a heat pump. Magnetic rollers are made by placing a neodymium magnet inside a steel tube, allowing fluid to flow in only one direction. Such rollers are widely used in heating systems, heat pumps, and other industrial devices for removing contaminants from fluids.
More information about magnetic separators can be found at magnetic separator.
More information about magnetic separators can be found at magnetic separator.
Neodymium magnets attract ferromagnetic materials such as iron (Fe), nickel (Ni), cobalt (Co). These materials are most commonly attracted by neodymium magnets. Steel metals are also firmly attracted by magnets, because it contains iron, which gives it ferromagnetic properties. Materials that do not react to magnets include 304 stainless steel and 316L acid-resistant steel, often used in the dental industry.
Neodymium magnet markings include letters and numbers that indicate the magnetic properties of the magnet. Letters such as M – "medium," H – "high," SH – "super high," UH – "ultra high," EH – "extra high," refer to the magnet’s resistance to demagnetization. Meanwhile, numbers like N35, N42, N52 define the density of magnetic energy, expressed in MGOe. For example, N42SH indicates a magnet with an energy density of 42 MGOe and very high coercivity. More information about magnets and their markings can be found in our technology guide.
Neodymium magnets do not interact with pure gold, aluminum, or copper. These metals repel magnets in the presence of an alternating magnetic field due to the phenomenon of eddy currents. However, neodymium magnets do attract ferromagnetic metals, such as iron (Fe), nickel (Ni), cobalt (Co). More information on magnets and their properties can be found at technology.
A permanent magnet, also called a hard magnet, is a material with a wide magnetic hysteresis loop, which, once magnetized, retains its magnetic properties. After applying an appropriate magnetic field, the magnetic domains in the material align in one direction and remain so even when the field is removed. Permanent magnets are characterized by a coercivity HcJ of at least 24 kA/m, and the higher the coercivity, the more resistant they are to loss of magnetism. Such magnets are used, among others, in motors, where resistance to a magnetic field is essential. More information about magnets can be found at technology.
A magnet attracts iron because iron is a ferromagnetic metal that possesses an internal magnetic force. Ferromagnets like iron, other ferromagnetic metals, contain magnetic domains whose fields point in a single direction. When a magnet comes near iron, its magnetic field amplifies the iron’s magnetic fields, increasing the pull force.
Magnetic domains in ferromagnetic materials are small regions in which the magnetic field is oriented in a single, fixed direction. When a magnet approaches, it intensifies the magnetic field in selected domains, causing the rest of the domains to align with the magnet’s field, resulting in the iron being attracted by the magnet.
Magnetic domains in ferromagnetic materials are small regions in which the magnetic field is oriented in a single, fixed direction. When a magnet approaches, it intensifies the magnetic field in selected domains, causing the rest of the domains to align with the magnet’s field, resulting in the iron being attracted by the magnet.
No, each pole of the magnet are equally strong.
Learn more about poles at enes magnet.
Learn more about poles at enes magnet.
Magnets are commonly employed in car body repair. This method requires a large metal ball and a neodymium magnet, allowing sheet metal bending without painting. Detailed information at technology.
Neodymium magnets retain their strength for many years, losing less than 1% per decade, as long as they are not subjected to unfavorable conditions. Storing them in a dry environment extends their lifespan.
A magnet’s sliding force is the amount of energy needed to slide a magnet across a surface. It depends on the friction and the magnet’s strength. Check the calculator.
Magnets attract each other when their opposite poles are oriented toward each other. This is a fundamental principle of magnetism, causing the magnetic force to operate.
Neodymium magnets operate in the range of temperatures from -130°C up to even 230°C, depending on the applied grade.
To reinforce its magnetic strength, you should keep the magnet in suitable conditions, use additional magnetic fields, and arrange magnets in multipole setups.
Neodymium magnets can function for many years, provided they are properly used.
Neodymium magnets have a minimal drop in force. A typical loss is about 1% per decade, as long as they are protected from high temperature and humidity. More information can be found in the magnet durability section.
Neodymium magnets are classified under PKWiU category 26.80.99, pertaining to various magnetic items. You can find detailed information in the PKWiU for magnets section.
“Magnetization through thickness” refers to the method in which the magnetic lines pass through the thickness of the magnet, rather than along its length or width. Such magnets is popular in technical applications, where a specific force in a particular direction is necessary.
Blocking the effect of a magnetic field requires application of materials like mu-metal, which shield the field lines. No material that completely blocks a magnetic field, but certain substances can lessen its effectiveness. More information can be found at materials for field blocking.
Neodymium magnets are often covered with protective coatings to prevent corrosion, when exposed to moisture. The most popular coatings are copper-nickel and gold, which increase durability of the magnets. Learn more about coatings at magnet coatings.
Magnets repel each other when their like poles are oriented towards one another. This phenomenon arises from the principles of electromagnetism. When the north pole of one magnet is turned toward the north pole of another (or the S pole toward the S pole), these magnets push away. It’s a basic principle of electromagnetism.
Neodymium magnets are compounds consisting of neodymium, boron, and iron. Their customs tariff code is 8505199089. This means they are classified as magnets under the international customs coding system. It is worth noting that the production of these magnets is globally widespread, with China being the main producer. Neodymium magnets are also manufactured in countries like the United States, Russia, and others to meet the growing demand for these exceptionally strong magnets.
A magnet’s poles can be determined using a compass or a magnetometer. Using a compass, the magnetic needle shows the N and south poles. More information can be found in the magnetic field section.
Safety
Guidelines for the safe use of magnets, including information on potential hazards and responsible magnet handling.
Yes, neodymium magnets are safe for health if used properly. However, remember that some neodymium magnets are very strong and can be dangerous if swallowed or come into contact with the body inappropriately.
Temperature affects the magnetic properties of magnets. Neodymium magnets may weaken at high temperatures. Their operating range is from -130°C up to even 230°C, depending on the magnet type.
Neodymium magnets are protected with a coating to increase durability. The most commonly used coatings are triple-layer, which increase resistance to moisture. More in the technology section.
Neodymium magnets can be damaged by moisture. Constant contact with a humid environment may cause corrosion, if the magnet does not have a proper protective layer. More about protecting magnets from moisture can be found in moisture protection.
Neodymium magnets are primarily made of neodymium, iron, and boron. If they are not protected, they can corrode, especially in humid conditions. To prevent this, most neodymium magnets are coated with a protective finish, typically nickel, which guards them against oxidation. Plastic and gold coatings are also used, although less frequently.
Neodymium magnets are very powerful, far surpassing other types of magnets. Their strength creates potential risks if not used properly. Larger magnets can even break bones if body parts get caught between them. Always apply safety measures to avoid such situations. Watch this video for examples: YouTube.
Magnets can disrupt the cell phone, especially if they’re strong. They can affect the compass, Hall sensors, and even the touchscreen.
For safety, avoid storing your phone near strong magnets. More info at dangerous magnets.
For safety, avoid storing your phone near strong magnets. More info at dangerous magnets.
Mechanical work on magnets carries risks. The resulting residue from machining stick to machines, which damages equipment. The specific structure of magnets makes precise machining more difficult.
Most foreign objects, such as magnets, pass through the digestive tract without complications. 80-90% of cases end with natural expulsion within 4-6 days. If the child swallows only one magnet or a coin, simply give them plenty of fluids and bread to aid natural elimination. When the child swallows two magnets, a problem may occur because they can connect in the gastrointestinal tract. In such cases, a doctor’s consultation is necessary and have an X-ray to check their location and condition.
The most important thing is not to panic and wait for the natural process, rather than seeking immediate emergency help. More info can be found at dangerous magnets.
The most important thing is not to panic and wait for the natural process, rather than seeking immediate emergency help. More info can be found at dangerous magnets.
Curiosities about neodymium magnets
Discover interesting facts about neodymium magnets – from their history to their unusual properties.
A neodymium magnet is not the same as the dietary supplement known as magnesium – it is a rare earth element, because neodymium is listed in the SI periodic table as a rare earth. They are currently recognized as the strongest permanent magnets available on the market. Magnets made from neodymium are produced by combining neodymium, iron, and boron with the formula Nd2Fe14B. At present, they are the most powerful magnets produced on a mass scale.
Advantages of neodymium magnets:
the highest energy density in relation to mass,
magnetic stability at around 1% loss per decade,
low production cost.
Advantages of neodymium magnets:
the highest energy density in relation to mass,
magnetic stability at around 1% loss per decade,
low production cost.
Most common user issues
Find solutions for problems such as corrosion, loss of magnetic strength, or difficulties in assembly.
Magnets stick to the fridge because the surface of the fridge is mostly made of metal, which is attractive to magnets. Typical fridges have metal surfaces on the external side, which favor attachment of magnets.
Choosing the right neodymium magnet depends on various factors to ensure its effectiveness and safety:
Selection Tips:
Magnetic Strength: Consider the power required for your application.
Size and Shape: Ensure the magnet fits the space it will be used in.
Protective Coating: Choose a magnet with a corrosion-resistant coating, such as nickel plating.
Operating Temperature: Neodymium magnets may lose their properties at high temperatures.
Application: Check if the magnet meets the requirements for industry, electronics, or household needs.
Selection Tips:
Magnetic Strength: Consider the power required for your application.
Size and Shape: Ensure the magnet fits the space it will be used in.
Protective Coating: Choose a magnet with a corrosion-resistant coating, such as nickel plating.
Operating Temperature: Neodymium magnets may lose their properties at high temperatures.
Application: Check if the magnet meets the requirements for industry, electronics, or household needs.
Magnets on the fridge are sometimes deemed dangerous because they may damage the surface of the fridge, especially if they are carelessly moved around. Also, very strong magnets can affect electronic components in some fridges.
You need to remove magnets from the fridge if they cause scratching its external part. Also, strong magnets potentially could negatively affect the electronic systems of the device. Sometimes, it is recommended to remove them to prevent permanent wear and tear, particularly if the magnets they are moved on the surface in a negligent manner.
Magnet fishing is legal in Poland, although the lack of specific regulations is sometimes a source of confusion. In other countries, the situation depends on local laws:
In the United States, for the most part, magnet fishing is permitted, e.g., in South Carolina, where the law prohibits removing artifacts from state waters.
In Indiana, starting in 2025, a special permit is required for magnet fishing.
In the UK and USA, there are restrictions on magnet fishing in the context of retrieving historical artifacts.
To be sure, check with local authorities before starting this activity.
In the United States, for the most part, magnet fishing is permitted, e.g., in South Carolina, where the law prohibits removing artifacts from state waters.
In Indiana, starting in 2025, a special permit is required for magnet fishing.
In the UK and USA, there are restrictions on magnet fishing in the context of retrieving historical artifacts.
To be sure, check with local authorities before starting this activity.
Magnets may be harmful to the fridge if their moving around causes damaging the surface. Frequent sliding of magnets could potentially trigger surface damage. However, standard application of magnets rarely is the cause of significant damage.
To detach security tags from clothing, you can use a clip magnet, such as the Ultra Magnet. Place it close to the clip and move it until the clip detaches.
Other methods include using scissors or a lighter/soldering iron to heat the plastic on the protruding part, then using pliers or scissors to widen the plastic and remove the security tag, be careful to avoid damaging it.
If the tag uses tape, try removing the tape by heating it with, for example, a hairdryer, using a cotton swab.
For difficult security tags, consult the store staff. More info can be found at anti-theft clips.
Other methods include using scissors or a lighter/soldering iron to heat the plastic on the protruding part, then using pliers or scissors to widen the plastic and remove the security tag, be careful to avoid damaging it.
If the tag uses tape, try removing the tape by heating it with, for example, a hairdryer, using a cotton swab.
For difficult security tags, consult the store staff. More info can be found at anti-theft clips.
Magnets may fail to attract well if the metal is not ferromagnetic or the magnet’s coating is damaged. Check our coating guide for details.
It’s not recommended to put magnets on the fridge because they can damage its finish. Moreover, large magnets may deform the delicate metal surfaces of fridges.
Magnets can destroy the fridge if their constant repositioning causes damage on the fridge’s surface. Moreover, extremely powerful magnets might disrupt the electronic control systems in some modern fridges.
If you plan to go treasure hunting with neodymium magnets, there are a few important things to consider when selecting the right model.
First, neodymium magnets can be divided into two types based on design and how the rope is attached. Regarding the mount, top-mounted magnets are suitable for fishing from piers, bridges, or checking wells. They are also perfect for fishing from a boat.
Models like DHIT Magnet GOLD come in five power levels, from 120 kg to 600 kg. In contrast, double-sided magnets like the DHIT Magnet GOLD are the most versatile and allow fishing from both the top and side (two handles can be screwed together on the sides to fish in pairs).
As for popularity, the most common models are F200x2 GOLD, F300x2 GOLD, and F550x2. If you’re unsure about choosing the right magnet, feel free to contact us. We will gladly advise and help you pick the model that best meets your expectations and goals.
More information about magnets for water searching can be found at which magnet for treasure hunting? or in the magnets for treasure hunting category.
First, neodymium magnets can be divided into two types based on design and how the rope is attached. Regarding the mount, top-mounted magnets are suitable for fishing from piers, bridges, or checking wells. They are also perfect for fishing from a boat.
Models like DHIT Magnet GOLD come in five power levels, from 120 kg to 600 kg. In contrast, double-sided magnets like the DHIT Magnet GOLD are the most versatile and allow fishing from both the top and side (two handles can be screwed together on the sides to fish in pairs).
As for popularity, the most common models are F200x2 GOLD, F300x2 GOLD, and F550x2. If you’re unsure about choosing the right magnet, feel free to contact us. We will gladly advise and help you pick the model that best meets your expectations and goals.
More information about magnets for water searching can be found at which magnet for treasure hunting? or in the magnets for treasure hunting category.