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MPL 40x20x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020582

GTIN/EAN: 5906301815754

Load capacity 2.24 kg / 21.97 N Magnetic Induction 87.16 mT / 872 Gs
length
40 mm [±0,1 mm]
Width
20 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
12 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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5.60 zł net / pcs

6.89 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What pull rating should I choose for a workshop block magnet?
A catalogue pull rating is measured under stated test conditions. A painted or thin steel surface, a gap or a load acting along the surface can reduce the practical grip. Choose a margin based on the actual installation and read the product card.
Are block neodymium magnets available in more durable versions?
Sintered NdFeB is brittle and can corrode if its coating is damaged. Check the coating and operating-temperature limit of the selected product. A housing may help protect a magnet in an application exposed to impacts.
How should I choose block magnets for mounting a structure?
First check the steel grade and thickness, then any gap created by paint or dirt, and finally the direction of the applied load. Compare these conditions with the specifications of the selected magnet; do not rely on grade alone.

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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Product card - MPL 40x20x2 / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020582
GTIN/EAN 5906301815754
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
length 40 mm [±0,1 mm]
Width 20 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 12 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.24 kg / 21.97 N
Magnetic Induction ~ ? 87.16 mT / 872 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x2 / 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

These information constitute the result of a physical analysis. Results were calculated on algorithms for the class Nd2Fe14B. Actual performance might slightly differ. Treat these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - power drop
MPL 40x20x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 871 Gs
87.1 mT
 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
 strong
1 mm 848 Gs
84.8 mT
 2.12 kg / 4.68 LBS
2121.3 g / 20.8 N
 strong
2 mm 811 Gs
81.1 mT
 1.94 kg / 4.28 LBS
1942.2 g / 19.1 N
 low risk
3 mm 765 Gs
76.5 mT
 1.73 kg / 3.81 LBS
1727.1 g / 16.9 N
 low risk
5 mm 658 Gs
65.8 mT
 1.28 kg / 2.81 LBS
1276.3 g / 12.5 N
 low risk
10 mm 409 Gs
40.9 mT
 0.49 kg / 1.09 LBS
493.2 g / 4.8 N
 low risk
15 mm 249 Gs
24.9 mT
 0.18 kg / 0.40 LBS
183.3 g / 1.8 N
 low risk
20 mm 157 Gs
15.7 mT
 0.07 kg / 0.16 LBS
72.3 g / 0.7 N
 low risk
30 mm 69 Gs
6.9 mT
 0.01 kg / 0.03 LBS
14.2 g / 0.1 N
 low risk
50 mm 20 Gs
2.0 mT
 0.00 kg / 0.00 LBS
1.2 g / 0.0 N
 low risk
Magnetic force decreases sharply with every subsequent millimeter of spacing. Remember that even a very thin break (e.g., dirt, paint, veneer) significantly diminishes the holding power. Neodymiums hold strongest during direct contact; distance nullifies the power. Analyze how rapidly the pull force plummet, when the product does not adhere flatly to the steel surface. When calculating the mounting, avoid unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MPL 40x20x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.45 kg / 0.99 LBS
448.0 g / 4.4 N
1 mm Raw steel (µ ≈ 0.2) 0.42 kg / 0.93 LBS
424.0 g / 4.2 N
2 mm Raw steel (µ ≈ 0.2) 0.39 kg / 0.86 LBS
388.0 g / 3.8 N
3 mm Raw steel (µ ≈ 0.2) 0.35 kg / 0.76 LBS
346.0 g / 3.4 N
5 mm Raw steel (µ ≈ 0.2) 0.26 kg / 0.56 LBS
256.0 g / 2.5 N
10 mm Raw steel (µ ≈ 0.2) 0.10 kg / 0.22 LBS
98.0 g / 1.0 N
15 mm Raw steel (µ ≈ 0.2) 0.04 kg / 0.08 LBS
36.0 g / 0.4 N
20 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.03 LBS
14.0 g / 0.1 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The following data defines the estimated force required to start the shifting of the magnet down along a vertical steel wall (assuming typical friction coefficient). The holding force depends on the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x2 / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.67 kg / 1.48 LBS
672.0 g / 6.6 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.45 kg / 0.99 LBS
448.0 g / 4.4 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.22 kg / 0.49 LBS
224.0 g / 2.2 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
1.12 kg / 2.47 LBS
1120.0 g / 11.0 N
When hanging a magnet on a vertical plane (e.g., a fridge), it you can count on only approx. 1/5 of its maximum pull force. Gravity as well as a low friction coefficient influence the fact that magnets slide down easier than they pull off. Designing a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will give way down under a significantly smaller weight. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x20x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.22 kg / 0.49 LBS
224.0 g / 2.2 N
1 mm
25%
 0.56 kg / 1.23 LBS
560.0 g / 5.5 N
2 mm
50%
 1.12 kg / 2.47 LBS
1120.0 g / 11.0 N
3 mm
75%
 1.68 kg / 3.70 LBS
1680.0 g / 16.5 N
5 mm
100%
 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
10 mm
100%
 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
11 mm
100%
 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
12 mm
100%
 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
A thin sheet cannot focus the entire magnetic field, which weakens actual performance of the holder. Should you mount a strong magnet to a thin surface, the magnetism will penetrate right through and the holding will be smaller. To squeeze 100% of this magnet's power, you need a suitably thick element of metal. The saturation effect causes that on delicate walls (e.g., thin profiles), the product holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 40x20x2 / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.24 kg / 4.94 LBS
2240.0 g / 22.0 N
 Estimate
40 °C -4.4% 2.14 kg / 4.72 LBS
2142.5 g / 21.0 N
 Estimate
60 °C -8.6% 2.05 kg / 4.51 LBS
2047.2 g / 20.1 N
 Estimate
80 °C -12.8% 1.95 kg / 4.31 LBS
1954.1 g / 19.2 N
 Material limit
100 °C — — Out of range — no model
The table estimates the reversible force change relative to 20°C, assuming a Br coefficient of -0.11%/°C and force proportional to Br². This is a simplified model with unchanged contact and geometry, not a measurement. Above the material limit, neither force nor irreversible magnetization loss is predicted.
The temperature limit comes from this product’s material data. Permissible conditions also depend on geometry and the magnetic circuit. Without B-H curves for the specific grade and temperature, Pc alone does not determine irreversible demagnetization. Values within the material range do not guarantee the allowable temperature of the complete assembly.

Table 6: Two magnets (repulsion) - field range
MPL 40x20x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.75 kg / 8.26 LBS
1 683 Gs
0.56 kg / 1.24 LBS
562 g / 5.5 N
 N/A
1 mm 3.66 kg / 8.07 LBS
1 723 Gs
0.55 kg / 1.21 LBS
549 g / 5.4 N
 3.30 kg / 7.27 LBS
~0 Gs
2 mm 3.55 kg / 7.82 LBS
1 696 Gs
0.53 kg / 1.17 LBS
532 g / 5.2 N
 3.19 kg / 7.04 LBS
~0 Gs
3 mm 3.41 kg / 7.51 LBS
1 662 Gs
0.51 kg / 1.13 LBS
511 g / 5.0 N
 3.07 kg / 6.76 LBS
~0 Gs
5 mm 3.07 kg / 6.77 LBS
1 579 Gs
0.46 kg / 1.02 LBS
461 g / 4.5 N
 2.77 kg / 6.10 LBS
~0 Gs
10 mm 2.13 kg / 4.71 LBS
1 316 Gs
0.32 kg / 0.71 LBS
320 g / 3.1 N
 1.92 kg / 4.23 LBS
~0 Gs
20 mm 0.82 kg / 1.82 LBS
818 Gs
0.12 kg / 0.27 LBS
124 g / 1.2 N
 0.74 kg / 1.64 LBS
~0 Gs
50 mm 0.05 kg / 0.11 LBS
205 Gs
0.01 kg / 0.02 LBS
8 g / 0.1 N
 0.05 kg / 0.10 LBS
~0 Gs
60 mm 0.02 kg / 0.05 LBS
139 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
 0.02 kg / 0.05 LBS
~0 Gs
70 mm 0.01 kg / 0.03 LBS
97 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
 0.01 kg / 0.02 LBS
~0 Gs
80 mm 0.01 kg / 0.01 LBS
71 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.01 LBS
52 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
40 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products attract each other from a much further distance than a neodymium and metal setup. The connection of two magnets generates a stronger field and a larger range of performance. Want to build a strong closure? Utilize two neodymiums instead of one magnet and a steel. Remember that when connecting a pair of magnets, the impact force is huge. The levitation is slightly lower than the attraction, but still large.
*Field value in repulsion mode reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Important: Figures apply to shear force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Axial field levels — not safety zones
MPL 40x20x2 / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 8.5 cm
< 10 Gs < 1.0 mT 6.5 cm
< 20 Gs < 2.0 mT 5.0 cm
< 40 Gs < 4.0 mT 4.0 cm
< 50 Gs < 5.0 mT 3.5 cm
< 400 Gs < 40.0 mT 1.5 cm
< 600 Gs < 60.0 mT 1.0 cm
Reference field levels for a model of one magnet, on its axis in air, with a 5 mm distance step. These are not device immunity limits or safe distances for implants. Do not use this table to assess the safety of a pacemaker, defibrillator or other implant; follow the device manufacturer’s and your clinician’s guidance. Steel and other magnets change the field distribution.

Table 8: Impact energy (cracking risk) - warning
MPL 40x20x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 16.83 km/h
(4.68 m/s)
 0.13 J
30 mm 18.33 km/h
(5.09 m/s)
 0.16 J
50 mm 18.36 km/h
(5.10 m/s)
 0.16 J
100 mm 18.40 km/h
(5.11 m/s)
 0.16 J
Neodymium magnets are prone to chipping – a collision with steel causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can destroy the magnet or painful pinches to fingers. Be sure to control the product during bringing near metal so it doesn't hit violently against the metal. A collision at high speed ends with a crack of the neodymium. Wear eye protection when playing with large magnets.

Table 9: Corrosion resistance
MPL 40x20x2 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MPL 40x20x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 8 693 Mx 86.9 µWb
Pc Coefficient 0.10 Low (Flat)
Total magnetic flux passing through the pole surface. Essential parameter when building generators as well as sensors. The Pc coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 40x20x2 / N38

Environment Effective steel pull Effect
Air (land) 2.24 kg Standard
Water (riverbed) 2.56 kg
(+0.32 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!
The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Caution: On a vertical surface, the magnet retains merely ~20% of its max power.

2. Steel thickness impact

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

3. Temperature resistance

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.10

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.

Technical and environmental data

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%

Sustainability

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: 020582-2026
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This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 40x20x2 mm and a weight of 12 g, guarantees the highest quality connection. This magnetic block with a force of 21.97 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
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. Watch your fingers! Magnets with a force of 2.24 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 40x20x2 / 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. 2.24 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.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. 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: 40 mm (length), 20 mm (width), and 2 mm (thickness). It is a magnetic block with dimensions 40x20x2 mm and a self-weight of 12 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • Their strength is durable, and after approximately ten years it decreases only by ~1% (according to research),
  • They are resistant to demagnetization induced by external field influence,
  • The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in shaping and the ability to modify to complex applications,
  • Universal use in high-tech industry – they are utilized in hard drives, drive modules, advanced medical instruments, as well as technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex shapes.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

The declared magnet strength refers to the maximum value, recorded under optimal environment, specifically:
  • on a base made of mild steel, optimally conducting the magnetic field
  • possessing a thickness of at least 10 mm to avoid saturation
  • characterized by smoothness
  • with zero gap (without coatings)
  • under axial application of breakaway force (90-degree angle)
  • in neutral thermal conditions

Determinants of practical lifting force of a magnet

In practice, the actual lifting capacity results from a number of factors, listed from most significant:
  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel type – mild steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
  • Smoothness – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.

Warnings
Crushing risk

Large magnets can crush fingers instantly. Do not put your hand between two attracting surfaces.

Allergy Warning

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or opt for versions in plastic housing.

Eye protection

Beware of splinters. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Dust explosion hazard

Fire warning: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.

Impact on smartphones

Navigation devices and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Pacemakers

People with a pacemaker should maintain an absolute distance from magnets. The magnetic field can interfere with the operation of the life-saving device.

Permanent damage

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

No play value

NdFeB magnets are not toys. Eating multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Safe operation

Use magnets with awareness. Their huge power can surprise even professionals. Plan your moves and respect their power.

Magnetic media

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Caution! Want to know more? Read our article: Why are neodymium magnets dangerous?