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MP 10x4.3x4 / N38 - ring magnet

ring magnet

Catalog no 030178

GTIN/EAN: 5906301811954

5.00
Load capacity 2.28 kg / 22.35 N Magnetic Induction 386.91 mT / 3869 Gs
Diameter
10 mm [±0,1 mm]
internal diameter Ø
4.3 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
1.92 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check technical specifications »

0.850 zł net / pcs

1.045 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

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 of the product - MP 10x4.3x4 / N38 - ring magnet

Specification / characteristics - MP 10x4.3x4 / N38 - ring magnet

properties
properties values
Cat. no. 030178
GTIN/EAN 5906301811954
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter 10 mm [±0,1 mm]
internal diameter Ø 4.3 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 1.92 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.28 kg / 22.35 N
Magnetic Induction ~ ? 386.91 mT / 3869 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 10x4.3x4 / N38 - ring 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 - report

Presented data are the direct effect of a physical simulation. Results rely on algorithms for the material Nd2Fe14B. Operational performance may deviate from the simulation results. Please consider these calculations as a supplementary guide during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MP 10x4.3x4 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6115 Gs
611.5 mT
 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
 medium risk
1 mm 4915 Gs
491.5 mT
 1.47 kg / 3.25 lbs
1473.3 g / 14.5 N
 low risk
2 mm 3833 Gs
383.3 mT
 0.90 kg / 1.97 lbs
895.7 g / 8.8 N
 low risk
3 mm 2949 Gs
294.9 mT
 0.53 kg / 1.17 lbs
530.3 g / 5.2 N
 low risk
5 mm 1761 Gs
176.1 mT
 0.19 kg / 0.42 lbs
189.1 g / 1.9 N
 low risk
10 mm 612 Gs
61.2 mT
 0.02 kg / 0.05 lbs
22.8 g / 0.2 N
 low risk
15 mm 284 Gs
28.4 mT
 0.00 kg / 0.01 lbs
4.9 g / 0.0 N
 low risk
20 mm 157 Gs
15.7 mT
 0.00 kg / 0.00 lbs
1.5 g / 0.0 N
 low risk
30 mm 64 Gs
6.4 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
50 mm 19 Gs
1.9 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Pulling power drops drastically with every mm of distance. Keep in mind that even a microscopic distance (e.g., contamination, paint, rust) noticeably weakens the grip. Magnets hold optimally at the point of direct contact; air break drastically cuts the power. See how rapidly the parameters drop, when the product does not adhere directly to the steel surface. When calculating the mounting, avoid redundant distances.

Table 2: Vertical capacity (vertical surface)
MP 10x4.3x4 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.46 kg / 1.01 lbs
456.0 g / 4.5 N
1 mm Stal (~0.2) 0.29 kg / 0.65 lbs
294.0 g / 2.9 N
2 mm Stal (~0.2) 0.18 kg / 0.40 lbs
180.0 g / 1.8 N
3 mm Stal (~0.2) 0.11 kg / 0.23 lbs
106.0 g / 1.0 N
5 mm Stal (~0.2) 0.04 kg / 0.08 lbs
38.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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 force necessary to cause the downward movement of the magnet down on a upright steel wall (assuming standard friction). This parameter is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MP 10x4.3x4 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.68 kg / 1.51 lbs
684.0 g / 6.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.46 kg / 1.01 lbs
456.0 g / 4.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.23 kg / 0.50 lbs
228.0 g / 2.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
When mounting a magnet on a upright surface (e.g., a car body), it will only hold only approx. 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that holders move down easier than they pop off the substrate. Want to create a vertical fastening? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will give way down under a much lighter cargo. Application of an anti-slip coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 10x4.3x4 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.23 kg / 0.50 lbs
228.0 g / 2.2 N
1 mm
25%
 0.57 kg / 1.26 lbs
570.0 g / 5.6 N
2 mm
50%
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
3 mm
75%
 1.71 kg / 3.77 lbs
1710.0 g / 16.8 N
5 mm
100%
 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
10 mm
100%
 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
11 mm
100%
 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
12 mm
100%
 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
A too thin steel is incapable of take in the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a too thin substrate, the field will penetrate right through and the holding will be smaller. To squeeze full efficiency of this neodymium's potential, you require a sufficiently solid element of metal. The saturation effect means that on thin elements (e.g., appliance housings), the holder works worse. We advise picking the steel cross-section according to the table below.

Table 5: Working in heat (material behavior) - power drop
MP 10x4.3x4 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.28 kg / 5.03 lbs
2280.0 g / 22.4 N
 OK
40 °C -2.2% 2.23 kg / 4.92 lbs
2229.8 g / 21.9 N
 OK
60 °C -4.4% 2.18 kg / 4.81 lbs
2179.7 g / 21.4 N
 OK
80 °C -6.6% 2.13 kg / 4.69 lbs
2129.5 g / 20.9 N
100 °C -28.8% 1.62 kg / 3.58 lbs
1623.4 g / 15.9 N
Ordinary NdFeB products change their properties parameters above the temperature limit. Avoid high temperatures – heat can permanently demagnetize this product. With increasing heat, the magnet's force momentarily drops. Do not use this product near heat sources exceeding its safe range. Too high temperature will lead to destruction of magnetism.
*Engineering note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner compared to rod magnets. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MP 10x4.3x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 12.93 kg / 28.50 lbs
6 169 Gs
1.94 kg / 4.27 lbs
1939 g / 19.0 N
 N/A
1 mm 10.50 kg / 23.16 lbs
11 025 Gs
1.58 kg / 3.47 lbs
1576 g / 15.5 N
 9.45 kg / 20.84 lbs
~0 Gs
2 mm 8.35 kg / 18.41 lbs
9 831 Gs
1.25 kg / 2.76 lbs
1253 g / 12.3 N
 7.52 kg / 16.57 lbs
~0 Gs
3 mm 6.55 kg / 14.43 lbs
8 703 Gs
0.98 kg / 2.17 lbs
982 g / 9.6 N
 5.89 kg / 12.99 lbs
~0 Gs
5 mm 3.91 kg / 8.63 lbs
6 729 Gs
0.59 kg / 1.29 lbs
587 g / 5.8 N
 3.52 kg / 7.76 lbs
~0 Gs
10 mm 1.07 kg / 2.36 lbs
3 522 Gs
0.16 kg / 0.35 lbs
161 g / 1.6 N
 0.96 kg / 2.13 lbs
~0 Gs
20 mm 0.13 kg / 0.29 lbs
1 223 Gs
0.02 kg / 0.04 lbs
19 g / 0.2 N
 0.12 kg / 0.26 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
194 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
129 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
91 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
66 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
50 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
39 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 wider radius than a neodymium and metal setup. The connection of magnet-to-magnet generates a stronger field and a wider radius of operation. Designing a strong closure? Use a pair of magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the impact force is huge. The repulsion force is a bit weaker than the attraction, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Calculations apply to sliding force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - warnings
MP 10x4.3x4 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 9.0 cm
Hearing aid 10 Gs (1.0 mT) 7.0 cm
Timepiece 20 Gs (2.0 mT) 5.0 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Remote 50 Gs (5.0 mT) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
A strong magnetic field poses a large risk to electronics and pacemakers. These NdFeB products produce a field that destroys function of digital equipment. Notice: the unseen radiation acts through matter and glass. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MP 10x4.3x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.10 km/h
(6.97 m/s)
 0.05 J
30 mm 25.30 km/h
(7.03 m/s)
 0.05 J
50 mm 25.30 km/h
(7.03 m/s)
 0.05 J
100 mm 25.30 km/h
(7.03 m/s)
 0.05 J
Neodymium magnets are very brittle – a collision with steel causes immediate chipping. Pay attention to connection velocity – a magnet released freely speeds with massive force. Impact 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 contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when handling with powerful specimens.

Table 9: Surface protection spec
MP 10x4.3x4 / 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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MP 10x4.3x4 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 017 Mx 40.2 µWb
Pc Coefficient 1.44 High (Stable)
Total magnetic flux emitted by the pole surface. Essential parameter for generator designers and motors. Pc value determines the magnet's operating point.

Table 11: Submerged application
MP 10x4.3x4 / N38

Environment Effective steel pull Effect
Air (land) 2.28 kg Standard
Water (riverbed) 2.61 kg
(+0.33 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Warning: On a vertical surface, the magnet retains merely ~20% of its nominal pull.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Thermal stability

*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) = 1.44

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: 030178-2026
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The ring magnet with a hole MP 10x4.3x4 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 2.28 kg works great as a cabinet closure, speaker holder, or spacer element in devices.
This is a crucial issue when working with model MP 10x4.3x4 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.
Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.
A screw or bolt with a thread diameter smaller than 4.3 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (10 mm), so it doesn't protrude beyond the outline.
The presented product is a ring magnet with dimensions Ø10 mm (outer diameter) and height 4 mm. The key parameter here is the lifting capacity amounting to approximately 2.28 kg (force ~22.35 N). The mounting hole diameter is precisely 4.3 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros and cons of neodymium magnets.

Advantages

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • They have unchanged lifting capacity, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
  • Magnets very well resist against loss of magnetization caused by ambient magnetic noise,
  • A magnet with a shiny silver surface has an effective appearance,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of exact machining as well as adapting to defined requirements,
  • Significant place in advanced technology sectors – they are utilized in hard drives, drive modules, precision medical tools, also technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Problematic aspects of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases 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
  • 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, in case of application outdoors
  • We recommend a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

The lifting capacity listed is a result of laboratory testing conducted under the following configuration:
  • using a sheet made of high-permeability steel, acting as a magnetic yoke
  • with a cross-section no less than 10 mm
  • with an ground touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • during detachment in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Lifting capacity in real conditions – factors

Holding efficiency is influenced by working environment parameters, mainly (from priority):
  • Gap (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate lowers the load capacity.

Safe handling of NdFeB magnets
Sensitization to coating

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If redness appears, cease working with magnets and use protective gear.

Respect the power

Use magnets consciously. Their immense force can shock even professionals. Plan your moves and respect their force.

Machining danger

Dust generated during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Bodily injuries

Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Maximum temperature

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Implant safety

Individuals with a pacemaker should maintain an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.

Material brittleness

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Eye protection is mandatory.

No play value

NdFeB magnets are not intended for children. Eating several magnets may result in them attracting across intestines, which poses a critical condition and requires immediate surgery.

Precision electronics

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Cards and drives

Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

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