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MPL 3x3x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020148

GTIN/EAN: 5906301811541

5.00
Load capacity 0.34 kg / 3.37 N Magnetic Induction 538.48 mT / 5385 Gs
length
3 mm [±0,1 mm]
Width
3 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
0.2 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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0.1500 zł net / pcs

0.1845 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 - MPL 3x3x3 / N38 - lamellar magnet

Specification / characteristics - MPL 3x3x3 / N38 - lamellar magnet

properties
properties values
Cat. no. 020148
GTIN/EAN 5906301811541
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 3 mm [±0,1 mm]
Width 3 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 0.2 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.34 kg / 3.37 N
Magnetic Induction ~ ? 538.48 mT / 5385 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 3x3x3 / 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 magnet - technical parameters

The following information represent the result of a mathematical calculation. Results were calculated on algorithms for the material Nd2Fe14B. Actual conditions may differ from theoretical values. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
MPL 3x3x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5372 Gs
537.2 mT
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
 low risk
1 mm 2530 Gs
253.0 mT
 0.08 kg / 0.17 pounds
75.4 g / 0.7 N
 low risk
2 mm 1127 Gs
112.7 mT
 0.01 kg / 0.03 pounds
15.0 g / 0.1 N
 low risk
3 mm 562 Gs
56.2 mT
 0.00 kg / 0.01 pounds
3.7 g / 0.0 N
 low risk
5 mm 192 Gs
19.2 mT
 0.00 kg / 0.00 pounds
0.4 g / 0.0 N
 low risk
10 mm 35 Gs
3.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
15 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
20 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
30 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
50 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
Grip strength weakens significantly per each millimeter of gap. Note that even a microscopic distance (e.g., contamination, varnish, dust) noticeably reduces the pull force. Neodymiums work strongest in perfect adhesion; distance weakens the power. Notice how flashily the pull force plummet, when the product does not adhere tightly to the metal substrate. When calculating the arrangement, discard redundant distances.

Table 2: Vertical force (vertical surface)
MPL 3x3x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.07 kg / 0.15 pounds
68.0 g / 0.7 N
1 mm Stal (~0.2) 0.02 kg / 0.04 pounds
16.0 g / 0.2 N
2 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
3 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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 defines the estimated weight limit needed to start the shifting of the magnet down on a upright steel plate (considering standard friction). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 3x3x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.10 kg / 0.22 pounds
102.0 g / 1.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.07 kg / 0.15 pounds
68.0 g / 0.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 pounds
34.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.17 kg / 0.37 pounds
170.0 g / 1.7 N
When hanging a magnet on a upright wall (e.g., a car body), it will only hold barely approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip cause that products slide down easier than they detach. Want to create a vertical fastening? Consider that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the magnet will slide down under a significantly smaller cargo. Using a rubber layer can drastically improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MPL 3x3x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.03 kg / 0.07 pounds
34.0 g / 0.3 N
1 mm
25%
 0.09 kg / 0.19 pounds
85.0 g / 0.8 N
2 mm
50%
 0.17 kg / 0.37 pounds
170.0 g / 1.7 N
3 mm
75%
 0.26 kg / 0.56 pounds
255.0 g / 2.5 N
5 mm
100%
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
10 mm
100%
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
11 mm
100%
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
12 mm
100%
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
A thin sheet is unable to conduct the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To achieve the maximum of this magnet's potential, you require a sufficiently solid element of metal. The material oversaturation means that on sheet metal structures (e.g., car bodies), the product works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MPL 3x3x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
 OK
40 °C -2.2% 0.33 kg / 0.73 pounds
332.5 g / 3.3 N
 OK
60 °C -4.4% 0.33 kg / 0.72 pounds
325.0 g / 3.2 N
 OK
80 °C -6.6% 0.32 kg / 0.70 pounds
317.6 g / 3.1 N
100 °C -28.8% 0.24 kg / 0.53 pounds
242.1 g / 2.4 N
Classic neodymiums irreversibly lose parameters past the thermal threshold. Watch out for overheating – heat can permanently damage this product. With every degree above norm, the neodymium's force momentarily lowers. Refrain from using this product near heat sources higher than its operating temperature limit. Too high temperature will cause irreversible degradation of magnetism.
*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 3x3x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.60 kg / 3.53 pounds
5 931 Gs
0.24 kg / 0.53 pounds
240 g / 2.4 N
 N/A
1 mm 0.80 kg / 1.77 pounds
7 610 Gs
0.12 kg / 0.27 pounds
120 g / 1.2 N
 0.72 kg / 1.59 pounds
~0 Gs
2 mm 0.36 kg / 0.78 pounds
5 061 Gs
0.05 kg / 0.12 pounds
53 g / 0.5 N
 0.32 kg / 0.70 pounds
~0 Gs
3 mm 0.15 kg / 0.34 pounds
3 343 Gs
0.02 kg / 0.05 pounds
23 g / 0.2 N
 0.14 kg / 0.31 pounds
~0 Gs
5 mm 0.03 kg / 0.08 pounds
1 568 Gs
0.01 kg / 0.01 pounds
5 g / 0.1 N
 0.03 kg / 0.07 pounds
~0 Gs
10 mm 0.00 kg / 0.00 pounds
384 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
70 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
6 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
3 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
2 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
1 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
1 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
1 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel combination. The setup of magnet-to-magnet creates a more powerful interaction and a further horizon of performance. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is massive. The repulsion force is slightly lower than the attraction, but still large.
*Field value in repulsion mode is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Important: Results show shear force of dual identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 3x3x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Timepiece 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.0 cm
Remote 50 Gs (5.0 mT) 1.0 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Extremely neodym field poses a large risk to IT equipment and pacemakers. These NdFeB products produce a flux that destroys function of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and plastic. Increased vigilance must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MPL 3x3x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 17.19 km/h
(4.77 m/s)
 0.00 J
30 mm 17.19 km/h
(4.78 m/s)
 0.00 J
50 mm 17.19 km/h
(4.77 m/s)
 0.00 J
100 mm 17.19 km/h
(4.78 m/s)
 0.00 J
NdFeB products are delicate – a collision with steel can result in shattering. Control the attraction moment – a neodymium left loose speeds with massive force. Striking energy can cause material chips or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
MPL 3x3x3 / 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 (Pc)
MPL 3x3x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 495 Mx 5.0 µWb
Pc Coefficient 0.84 High (Stable)
Total magnetic flux passing through the magnet pole. Key data for generator designers and motors. Pc value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 3x3x3 / N38

Environment Effective steel pull Effect
Air (land) 0.34 kg Standard
Water (riverbed) 0.39 kg
(+0.05 kg buoyancy gain)
+14.5%
Rust risk: 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. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

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

2. Steel thickness impact

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.84

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

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: 020148-2026
Measurement Calculator

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Model MPL 3x3x3 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 0.34 kg), this product is available off-the-shelf 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. Watch your fingers! Magnets with a force of 0.34 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 3x3x3 / N38, it is best to use strong epoxy glues (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 3x3x3 / N38 model is magnetized through the thickness (dimension 3 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (3x3 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 3x3x3 mm, which, at a weight of 0.2 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 0.34 kg (force ~3.37 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of rare earth magnets.

Strengths

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • Their strength remains stable, and after approximately ten years it drops only by ~1% (theoretically),
  • They do not lose their magnetic properties even under close interference source,
  • By covering with a decorative layer of gold, the element has an elegant look,
  • The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in constructing and the ability to adapt to complex applications,
  • Huge importance in modern technologies – they are commonly used in hard drives, drive modules, advanced medical instruments, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Weaknesses

Problematic aspects of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Limited possibility of creating nuts in the magnet and complex forms - preferred is casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can complicate diagnosis 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

Holding force characteristics

Highest magnetic holding force – what it depends on?

The force parameter is a result of laboratory testing performed under standard conditions:
  • with the use of a yoke made of special test steel, ensuring full magnetic saturation
  • whose thickness is min. 10 mm
  • with a plane perfectly flat
  • under conditions of gap-free contact (metal-to-metal)
  • under vertical force direction (90-degree angle)
  • at ambient temperature room level

Lifting capacity in real conditions – factors

In practice, the actual lifting capacity depends on several key aspects, presented from crucial:
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Metal type – different alloys attracts identically. High carbon content worsen the attraction effect.
  • Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets
Danger to pacemakers

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Permanent damage

Control the heat. Heating the magnet to high heat will ruin its properties and strength.

Respect the power

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Protect data

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can destroy these devices and erase data from cards.

Mechanical processing

Powder generated during grinding of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Avoid contact if allergic

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness appears, immediately stop working with magnets and use protective gear.

Compass and GPS

An intense magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Material brittleness

NdFeB magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets leads to them shattering into small pieces.

Finger safety

Big blocks can crush fingers in a fraction of a second. Never put your hand between two strong magnets.

Danger to the youngest

Absolutely keep magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are very dangerous.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?