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MPL 20x3x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020130

GTIN/EAN: 5906301811367

5.00
Load capacity 2.33 kg / 22.90 N Magnetic Induction 370.68 mT / 3707 Gs
length
20 mm [±0,1 mm]
Width
3 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
0.9 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product details »

0.320 zł net / pcs

0.394 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 parameters of the product - MPL 20x3x2 / N38 - lamellar magnet

Specification / characteristics - MPL 20x3x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020130
GTIN/EAN 5906301811367
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 20 mm [±0,1 mm]
Width 3 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.9 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.33 kg / 22.90 N
Magnetic Induction ~ ? 370.68 mT / 3707 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x3x2 / 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

Engineering modeling of the assembly - technical parameters

Presented information are the outcome of a physical simulation. Results were calculated on models for the class Nd2Fe14B. Actual performance might slightly differ. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - power drop
MPL 20x3x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3700 Gs
370.0 mT
 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
 warning
1 mm 2103 Gs
210.3 mT
 0.75 kg / 1.66 lbs
752.3 g / 7.4 N
 low risk
2 mm 1172 Gs
117.2 mT
 0.23 kg / 0.52 lbs
233.7 g / 2.3 N
 low risk
3 mm 721 Gs
72.1 mT
 0.09 kg / 0.20 lbs
88.5 g / 0.9 N
 low risk
5 mm 345 Gs
34.5 mT
 0.02 kg / 0.04 lbs
20.3 g / 0.2 N
 low risk
10 mm 101 Gs
10.1 mT
 0.00 kg / 0.00 lbs
1.7 g / 0.0 N
 low risk
15 mm 42 Gs
4.2 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
20 mm 21 Gs
2.1 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
30 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
50 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Pulling power weakens drastically with every subsequent millimeter of spacing. Keep in mind that every additional insulation layer (e.g., contamination, varnish, veneer) strongly weakens the grip. Neodymiums work strongest at the point of direct contact; air break kills the force. Notice how quickly the pull force drop, when the product does not touch flatly to the metal substrate. When designing the assembly, avoid redundant distances.

Table 2: Sliding hold (vertical surface)
MPL 20x3x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.47 kg / 1.03 lbs
466.0 g / 4.6 N
1 mm Stal (~0.2) 0.15 kg / 0.33 lbs
150.0 g / 1.5 N
2 mm Stal (~0.2) 0.05 kg / 0.10 lbs
46.0 g / 0.5 N
3 mm Stal (~0.2) 0.02 kg / 0.04 lbs
18.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The table below presents the estimated weight limit required to initiate the downward movement of the magnet down along a upright metal surface (considering standard friction). This parameter depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 20x3x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.70 kg / 1.54 lbs
699.0 g / 6.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.47 kg / 1.03 lbs
466.0 g / 4.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.23 kg / 0.51 lbs
233.0 g / 2.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.17 kg / 2.57 lbs
1165.0 g / 11.4 N
When placing a magnet on a upright surface (e.g., a fridge), it will maintain barely about 1/5 of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that holders move down faster than they pull off. Designing a wall mount? Note that the sliding force is much weaker than the maximum static pull force. On a smooth steel, the element will give way down under a noticeably lighter weight. Application of an anti-slip layer can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x3x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.23 kg / 0.51 lbs
233.0 g / 2.3 N
1 mm
25%
 0.58 kg / 1.28 lbs
582.5 g / 5.7 N
2 mm
50%
 1.17 kg / 2.57 lbs
1165.0 g / 11.4 N
3 mm
75%
 1.75 kg / 3.85 lbs
1747.5 g / 17.1 N
5 mm
100%
 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
10 mm
100%
 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
11 mm
100%
 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
12 mm
100%
 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
A too thin steel is incapable of take in the full magnetic flux, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the magnetism will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this magnet's potential, you need a suitably thick element of metal. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MPL 20x3x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.33 kg / 5.14 lbs
2330.0 g / 22.9 N
 OK
40 °C -2.2% 2.28 kg / 5.02 lbs
2278.7 g / 22.4 N
 OK
60 °C -4.4% 2.23 kg / 4.91 lbs
2227.5 g / 21.9 N
80 °C -6.6% 2.18 kg / 4.80 lbs
2176.2 g / 21.3 N
100 °C -28.8% 1.66 kg / 3.66 lbs
1659.0 g / 16.3 N
Classic neodymiums change their properties parameters past the thermal threshold. Watch out for overheating – excessive heat can permanently destroy this product. With increasing heat, the magnet's power momentarily lowers. Refrain from using this product in hot environments higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetism.
*Technical advisory: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) may lose charge permanently sooner than long magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MPL 20x3x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.06 kg / 11.17 lbs
4 866 Gs
0.76 kg / 1.67 lbs
760 g / 7.5 N
 N/A
1 mm 3.01 kg / 6.64 lbs
5 705 Gs
0.45 kg / 1.00 lbs
452 g / 4.4 N
 2.71 kg / 5.97 lbs
~0 Gs
2 mm 1.64 kg / 3.61 lbs
4 205 Gs
0.25 kg / 0.54 lbs
245 g / 2.4 N
 1.47 kg / 3.24 lbs
~0 Gs
3 mm 0.89 kg / 1.97 lbs
3 106 Gs
0.13 kg / 0.29 lbs
134 g / 1.3 N
 0.80 kg / 1.77 lbs
~0 Gs
5 mm 0.31 kg / 0.67 lbs
1 816 Gs
0.05 kg / 0.10 lbs
46 g / 0.4 N
 0.27 kg / 0.61 lbs
~0 Gs
10 mm 0.04 kg / 0.10 lbs
690 Gs
0.01 kg / 0.01 lbs
7 g / 0.1 N
 0.04 kg / 0.09 lbs
~0 Gs
20 mm 0.00 kg / 0.01 lbs
202 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
24 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
14 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
9 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
6 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
5 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
3 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets attract each other from a wider radius than a magnet and steel setup. The connection of magnet-to-magnet produces a massive flux and a larger range of performance. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still impressive.
*Field value between like poles reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Important: Figures show sliding force of two same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - warnings
MPL 20x3x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 3.0 cm
Timepiece 20 Gs (2.0 mT) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
A strong magnetic field poses a large risk to IT equipment as well as medical implants. These magnets generate a flux that destroys function of digital equipment. Be aware: the unseen radiation acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 20x3x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.68 km/h
(6.86 m/s)
 0.02 J
30 mm 24.71 km/h
(6.86 m/s)
 0.02 J
50 mm 24.70 km/h
(6.86 m/s)
 0.02 J
100 mm 24.71 km/h
(6.86 m/s)
 0.02 J
Magnetic elements are delicate – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 20x3x2 / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MPL 20x3x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 748 Mx 17.5 µWb
Pc Coefficient 0.32 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data in coil applications and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 20x3x2 / N38

Environment Effective steel pull Effect
Air (land) 2.33 kg Standard
Water (riverbed) 2.67 kg
(+0.34 kg buoyancy gain)
+14.5%
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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its max power.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Power loss vs temp

*For N38 material, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.32

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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.

Engineering data and GPSR

Elemental analysis

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%

Ecology and recycling (GPSR)

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: 020130-2026
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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 20x3x2 mm and a weight of 0.9 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 2.33 kg), this product is available immediately from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is sliding 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 20x3x2 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 2.33 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (20x3 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 20 mm (length), 3 mm (width), and 2 mm (thickness). The key parameter here is the holding force amounting to approximately 2.33 kg (force ~22.90 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of neodymium magnets.

Pros

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They retain full power for nearly 10 years – the drop is just ~1% (according to analyses),
  • They maintain their magnetic properties even under strong external field,
  • In other words, due to the metallic layer of silver, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a powerful 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 shape) at temperatures up to 230°C and above...
  • In view of the option of precise forming and customization to specialized solutions, NdFeB magnets can be produced in a variety of geometric configurations, which amplifies use scope,
  • Significant place in high-tech industry – they serve a role in magnetic memories, electric drive systems, advanced medical instruments, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions

Cons

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated forms.
  • Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical when they are in the body.
  • Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Information about lifting capacity was defined for ideal contact conditions, including:
  • using a sheet made of high-permeability steel, functioning as a ideal flux conductor
  • whose thickness reaches at least 10 mm
  • with an ideally smooth contact surface
  • without the slightest air gap between the magnet and steel
  • under vertical force vector (90-degree angle)
  • at standard ambient temperature

Practical aspects of lifting capacity – factors

Bear in mind that the working load may be lower depending on elements below, in order of importance:
  • Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures decrease magnetic permeability and lifting capacity.
  • Smoothness – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets
Protective goggles

NdFeB magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them breaking into shards.

Do not overheat magnets

Control the heat. Heating the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Threat to electronics

Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Danger to pacemakers

Individuals with a pacemaker have to keep an large gap from magnets. The magnetic field can disrupt the functioning of the implant.

Nickel allergy

Studies show that nickel (the usual finish) is a common allergen. For allergy sufferers, refrain from touching magnets with bare hands and opt for coated magnets.

Compass and GPS

Note: rare earth magnets produce a field that confuses sensitive sensors. Keep a separation from your phone, device, and GPS.

Powerful field

Use magnets consciously. Their immense force can surprise even experienced users. Stay alert and do not underestimate their power.

Hand protection

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Fire risk

Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Do not give to children

Adult use only. Tiny parts can be swallowed, leading to severe trauma. Store away from children and animals.

Security! Learn more about risks in the article: Safety of working with magnets.