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MPL 25x15x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020392

GTIN/EAN: 5906301811893

5.00
Load capacity 1.89 kg / 18.53 N Magnetic Induction 120.03 mT / 1200 Gs
length
25 mm [±0,1 mm]
Width
15 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
5.63 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical parameters »

1.940 zł net / pcs

2.39 zł with VAT (23% VAT) / pcs

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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical details - MPL 25x15x2 / N38 - lamellar magnet

Specification / characteristics - MPL 25x15x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020392
GTIN/EAN 5906301811893
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 25 mm [±0,1 mm]
Width 15 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 5.63 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.89 kg / 18.53 N
Magnetic Induction ~ ? 120.03 mT / 1200 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 25x15x2 / N38 - lamellar magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Technical modeling of the product - technical parameters

These information constitute the outcome of a physical simulation. Results are based on algorithms for the material Nd2Fe14B. Actual parameters may differ from theoretical values. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MPL 25x15x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1200 Gs
120.0 mT
 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
 low risk
1 mm 1144 Gs
114.4 mT
 1.72 kg / 3.79 pounds
1717.6 g / 16.8 N
 low risk
2 mm 1060 Gs
106.0 mT
 1.48 kg / 3.25 pounds
1475.6 g / 14.5 N
 low risk
3 mm 961 Gs
96.1 mT
 1.21 kg / 2.67 pounds
1212.1 g / 11.9 N
 low risk
5 mm 754 Gs
75.4 mT
 0.75 kg / 1.65 pounds
746.8 g / 7.3 N
 low risk
10 mm 376 Gs
37.6 mT
 0.19 kg / 0.41 pounds
185.6 g / 1.8 N
 low risk
15 mm 193 Gs
19.3 mT
 0.05 kg / 0.11 pounds
48.9 g / 0.5 N
 low risk
20 mm 107 Gs
10.7 mT
 0.02 kg / 0.03 pounds
15.0 g / 0.1 N
 low risk
30 mm 41 Gs
4.1 mT
 0.00 kg / 0.00 pounds
2.2 g / 0.0 N
 low risk
50 mm 10 Gs
1.0 mT
 0.00 kg / 0.00 pounds
0.1 g / 0.0 N
 low risk
Magnetic force weakens drastically with every subsequent millimeter of spacing. Keep in mind that even a very thin break (e.g., contamination, paint, rust) noticeably reduces the pull force. Neodymiums operate strongest at the point of direct contact; air break kills the power. Observe how rapidly the parameters fall, when the product does not adhere flatly to the metal substrate. When calculating the assembly, discard redundant distances.

Table 2: Slippage hold (vertical surface)
MPL 25x15x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.38 kg / 0.83 pounds
378.0 g / 3.7 N
1 mm Stal (~0.2) 0.34 kg / 0.76 pounds
344.0 g / 3.4 N
2 mm Stal (~0.2) 0.30 kg / 0.65 pounds
296.0 g / 2.9 N
3 mm Stal (~0.2) 0.24 kg / 0.53 pounds
242.0 g / 2.4 N
5 mm Stal (~0.2) 0.15 kg / 0.33 pounds
150.0 g / 1.5 N
10 mm Stal (~0.2) 0.04 kg / 0.08 pounds
38.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below calculates the theoretical shear load needed to initiate the sliding of the magnet down against a vertical metal surface (assuming typical friction). The holding force depends on the gap size between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MPL 25x15x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.57 kg / 1.25 pounds
567.0 g / 5.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.38 kg / 0.83 pounds
378.0 g / 3.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.19 kg / 0.42 pounds
189.0 g / 1.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.95 kg / 2.08 pounds
945.0 g / 9.3 N
When mounting a magnet on a vertical surface (e.g., a car body), it will maintain barely approx. 20%-30% of its nominal power. Gravity as well as a weak degree of grip influence the fact that holders slide down easier than they detach. Want to create a vertical fastening? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slide down under a noticeably lighter load. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MPL 25x15x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.19 kg / 0.42 pounds
189.0 g / 1.9 N
1 mm
25%
 0.47 kg / 1.04 pounds
472.5 g / 4.6 N
2 mm
50%
 0.95 kg / 2.08 pounds
945.0 g / 9.3 N
3 mm
75%
 1.42 kg / 3.13 pounds
1417.5 g / 13.9 N
5 mm
100%
 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
10 mm
100%
 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
11 mm
100%
 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
12 mm
100%
 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
A thin sheet is unable to conduct the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a thin surface, the magnetism will penetrate right through and the holding will be smaller. To achieve full efficiency of this neodymium's potential, you need a suitably thick piece of metal. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 25x15x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
 OK
40 °C -2.2% 1.85 kg / 4.08 pounds
1848.4 g / 18.1 N
 OK
60 °C -4.4% 1.81 kg / 3.98 pounds
1806.8 g / 17.7 N
80 °C -6.6% 1.77 kg / 3.89 pounds
1765.3 g / 17.3 N
100 °C -28.8% 1.35 kg / 2.97 pounds
1345.7 g / 13.2 N
Classic neodymiums lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly demagnetize this product. With every degree above norm, the neodymium's capacity temporarily decreases. Do not use this product near heat sources exceeding its safe range. Ignoring the limit will result in irreversible degradation of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (low Pc) may lose charge permanently under lower heat stress than long magnets. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 25x15x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.33 kg / 7.34 pounds
2 260 Gs
0.50 kg / 1.10 pounds
499 g / 4.9 N
 N/A
1 mm 3.20 kg / 7.05 pounds
2 353 Gs
0.48 kg / 1.06 pounds
480 g / 4.7 N
 2.88 kg / 6.35 pounds
~0 Gs
2 mm 3.03 kg / 6.67 pounds
2 288 Gs
0.45 kg / 1.00 pounds
454 g / 4.5 N
 2.72 kg / 6.00 pounds
~0 Gs
3 mm 2.82 kg / 6.22 pounds
2 210 Gs
0.42 kg / 0.93 pounds
423 g / 4.2 N
 2.54 kg / 5.60 pounds
~0 Gs
5 mm 2.37 kg / 5.22 pounds
2 024 Gs
0.36 kg / 0.78 pounds
355 g / 3.5 N
 2.13 kg / 4.70 pounds
~0 Gs
10 mm 1.32 kg / 2.90 pounds
1 509 Gs
0.20 kg / 0.44 pounds
197 g / 1.9 N
 1.18 kg / 2.61 pounds
~0 Gs
20 mm 0.33 kg / 0.72 pounds
752 Gs
0.05 kg / 0.11 pounds
49 g / 0.5 N
 0.29 kg / 0.65 pounds
~0 Gs
50 mm 0.01 kg / 0.02 pounds
128 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.01 pounds
81 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
54 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
38 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
28 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
21 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets interact from a much further distance than a magnet and steel setup. The setup of magnet-to-magnet generates a stronger field and a larger range of action. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the collision energy is massive. The levitation is a bit weaker than the connection force, but still impressive.
*The magnetic induction for N-N configuration reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Calculations demonstrate friction force of two matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 25x15x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.5 cm
Remote 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
A strong magnetic field is a real danger to electronic devices and medical implants. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and plastic. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MPL 25x15x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 19.92 km/h
(5.53 m/s)
 0.09 J
30 mm 20.70 km/h
(5.75 m/s)
 0.09 J
50 mm 20.69 km/h
(5.75 m/s)
 0.09 J
100 mm 20.72 km/h
(5.76 m/s)
 0.09 J
NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can destroy the magnet or painful pinches to skin. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when handling with powerful specimens.

Table 9: Surface protection spec
MPL 25x15x2 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MPL 25x15x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 600 Mx 56.0 µWb
Pc Coefficient 0.14 Low (Flat)
Flux value emitted by the pole surface. Essential parameter when building generators as well as sensors. The Pc coefficient defines the working geometry.

Table 11: Submerged application
MPL 25x15x2 / N38

Environment Effective steel pull Effect
Air (land) 1.89 kg Standard
Water (riverbed) 2.16 kg
(+0.27 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Caution: On a vertical surface, the magnet holds merely a fraction of its max power.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely weakens the holding force.

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.14

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

Material specification

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 020392-2026
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Force (pull)

Magnetic Induction

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Component MPL 25x15x2 / N38 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 1.89 kg), this product is available immediately from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 25x15x2 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 25x15x2 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 1.89 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 25x15x2 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 25x15x2 / N38 model is magnetized through the thickness (dimension 2 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 25 mm (length), 15 mm (width), and 2 mm (thickness). It is a magnetic block with dimensions 25x15x2 mm and a self-weight of 5.63 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain full power for around ten years – the loss is just ~1% (according to analyses),
  • Magnets effectively defend themselves against loss of magnetization caused by foreign field sources,
  • Thanks to the shimmering finish, the layer of nickel, gold, or silver-plated gives an elegant appearance,
  • The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of exact forming as well as modifying to concrete applications,
  • Huge importance in advanced technology sectors – they find application in data components, electromotive mechanisms, precision medical tools, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of producing threads in the magnet and complicated shapes - recommended is cover - magnet mounting.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these products can be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Detachment force of the magnet in optimal conditions – what contributes to it?

The load parameter shown represents the peak performance, measured under optimal environment, specifically:
  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • whose transverse dimension is min. 10 mm
  • with an polished touching surface
  • without any air gap between the magnet and steel
  • under perpendicular force direction (90-degree angle)
  • at conditions approx. 20°C

Lifting capacity in practice – influencing factors

Please note that the application force will differ influenced by the following factors, starting with the most relevant:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Base massiveness – insufficiently thick sheet does not close the flux, causing part of the power to be wasted into the air.
  • Plate material – mild steel attracts best. Higher carbon content reduce magnetic properties and lifting capacity.
  • Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Warnings
Metal Allergy

Some people suffer from a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Frequent touching may cause dermatitis. It is best to use safety gloves.

Dust is flammable

Machining of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Electronic hazard

Data protection: Strong magnets can damage payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Adults only

NdFeB magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and necessitates immediate surgery.

Operating temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Immense force

Handle with care. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can move away.

Impact on smartphones

Note: rare earth magnets generate a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Hand protection

Large magnets can smash fingers instantly. Do not put your hand between two strong magnets.

Material brittleness

Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

Danger to pacemakers

People with a pacemaker must maintain an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.

Important! Details about hazards in the article: Safety of working with magnets.