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MP 20x5x5 / N38 - ring magnet

ring magnet

Catalog no 030186

GTIN/EAN: 5906301812036

5.00
Load capacity 6.49 kg / 63.68 N Magnetic Induction 277.16 mT / 2772 Gs
Diameter
20 mm [±0,1 mm]
internal diameter Ø
5 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
11.04 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical details »

2.24 zł net / pcs

2.76 zł with VAT (23% VAT) / pcs

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price from 300 pcs
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price from 1150 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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Product card - MP 20x5x5 / N38 - ring magnet

Specification / characteristics - MP 20x5x5 / N38 - ring magnet

properties
properties values
Cat. no. 030186
GTIN/EAN 5906301812036
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 20 mm [±0,1 mm]
internal diameter Ø 5 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 11.04 g
Magnetization Direction ↑ axial
Load capacity ~ ? 6.49 kg / 63.68 N
Magnetic Induction ~ ? 277.16 mT / 2772 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x5x5 / 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

Technical modeling of the assembly - data

These information constitute the outcome of a engineering analysis. Values were calculated on models for the class Nd2Fe14B. Actual parameters may deviate from the simulation results. Use these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - power drop
MP 20x5x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5917 Gs
591.7 mT
 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
 strong
1 mm 5321 Gs
532.1 mT
 5.25 kg / 11.57 lbs
5249.3 g / 51.5 N
 strong
2 mm 4736 Gs
473.6 mT
 4.16 kg / 9.17 lbs
4158.8 g / 40.8 N
 strong
3 mm 4184 Gs
418.4 mT
 3.25 kg / 7.15 lbs
3245.0 g / 31.8 N
 strong
5 mm 3216 Gs
321.6 mT
 1.92 kg / 4.23 lbs
1917.2 g / 18.8 N
 weak grip
10 mm 1650 Gs
165.0 mT
 0.50 kg / 1.11 lbs
504.5 g / 4.9 N
 weak grip
15 mm 907 Gs
90.7 mT
 0.15 kg / 0.34 lbs
152.6 g / 1.5 N
 weak grip
20 mm 544 Gs
54.4 mT
 0.05 kg / 0.12 lbs
54.9 g / 0.5 N
 weak grip
30 mm 240 Gs
24.0 mT
 0.01 kg / 0.02 lbs
10.7 g / 0.1 N
 weak grip
50 mm 75 Gs
7.5 mT
 0.00 kg / 0.00 lbs
1.0 g / 0.0 N
 weak grip
Grip strength weakens significantly with every mm of spacing. Remember that even a very thin break (e.g., dirt, varnish, rust) significantly weakens the grip. Magnets work most effectively in perfect adhesion; distance nullifies the force. Analyze how quickly the pull force plummet, when the magnet does not adhere tightly to the metal substrate. When planning the mounting, avoid redundant distances.

Table 2: Sliding hold (wall)
MP 20x5x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.30 kg / 2.86 lbs
1298.0 g / 12.7 N
1 mm Stal (~0.2) 1.05 kg / 2.31 lbs
1050.0 g / 10.3 N
2 mm Stal (~0.2) 0.83 kg / 1.83 lbs
832.0 g / 8.2 N
3 mm Stal (~0.2) 0.65 kg / 1.43 lbs
650.0 g / 6.4 N
5 mm Stal (~0.2) 0.38 kg / 0.85 lbs
384.0 g / 3.8 N
10 mm Stal (~0.2) 0.10 kg / 0.22 lbs
100.0 g / 1.0 N
15 mm Stal (~0.2) 0.03 kg / 0.07 lbs
30.0 g / 0.3 N
20 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The following data presents the theoretical weight limit sufficient to start the downward movement of the magnet vertically along a vertical metal surface (considering typical friction). This parameter depends on the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 20x5x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.95 kg / 4.29 lbs
1947.0 g / 19.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.30 kg / 2.86 lbs
1298.0 g / 12.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.65 kg / 1.43 lbs
649.0 g / 6.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.25 kg / 7.15 lbs
3245.0 g / 31.8 N
When mounting a holder on a vertical wall (e.g., a fridge), it you can count on just approx. 1/5 of its nominal power. Gravity and a weak degree of grip cause that holders slide down easier than they pop off the substrate. Designing a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will give way down under a noticeably lighter cargo. Application of an anti-slip layer can drastically improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 20x5x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.65 kg / 1.43 lbs
649.0 g / 6.4 N
1 mm
25%
 1.62 kg / 3.58 lbs
1622.5 g / 15.9 N
2 mm
50%
 3.25 kg / 7.15 lbs
3245.0 g / 31.8 N
3 mm
75%
 4.87 kg / 10.73 lbs
4867.5 g / 47.8 N
5 mm
100%
 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
10 mm
100%
 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
11 mm
100%
 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
12 mm
100%
 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
A too thin steel is unable to focus the full magnetic flux, which wastes potential of the holder. Should you attach a powerful product to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To utilize 100% of this neodymium's power, you need a suitably thick backing of steel. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the product holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
MP 20x5x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 6.49 kg / 14.31 lbs
6490.0 g / 63.7 N
 OK
40 °C -2.2% 6.35 kg / 13.99 lbs
6347.2 g / 62.3 N
 OK
60 °C -4.4% 6.20 kg / 13.68 lbs
6204.4 g / 60.9 N
 OK
80 °C -6.6% 6.06 kg / 13.36 lbs
6061.7 g / 59.5 N
100 °C -28.8% 4.62 kg / 10.19 lbs
4620.9 g / 45.3 N
Classic neodymiums irreversibly lose parameters past the thermal threshold. Avoid high temperatures – high temperature can permanently damage this magnet. As the temperature rises, the neodymium's capacity momentarily decreases. Do not use this magnet close to ovens higher than its working range. Ignoring the limit will lead to permanent loss of magnetism.
*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently under lower heat stress than long magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MP 20x5x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 54.03 kg / 119.11 lbs
6 121 Gs
8.10 kg / 17.87 lbs
8104 g / 79.5 N
 N/A
1 mm 48.76 kg / 107.50 lbs
11 242 Gs
7.31 kg / 16.13 lbs
7314 g / 71.8 N
 43.89 kg / 96.75 lbs
~0 Gs
2 mm 43.70 kg / 96.34 lbs
10 642 Gs
6.55 kg / 14.45 lbs
6555 g / 64.3 N
 39.33 kg / 86.71 lbs
~0 Gs
3 mm 38.98 kg / 85.94 lbs
10 051 Gs
5.85 kg / 12.89 lbs
5847 g / 57.4 N
 35.08 kg / 77.34 lbs
~0 Gs
5 mm 30.63 kg / 67.54 lbs
8 910 Gs
4.60 kg / 10.13 lbs
4595 g / 45.1 N
 27.57 kg / 60.78 lbs
~0 Gs
10 mm 15.96 kg / 35.19 lbs
6 432 Gs
2.39 kg / 5.28 lbs
2394 g / 23.5 N
 14.36 kg / 31.67 lbs
~0 Gs
20 mm 4.20 kg / 9.26 lbs
3 299 Gs
0.63 kg / 1.39 lbs
630 g / 6.2 N
 3.78 kg / 8.33 lbs
~0 Gs
50 mm 0.19 kg / 0.42 lbs
702 Gs
0.03 kg / 0.06 lbs
29 g / 0.3 N
 0.17 kg / 0.38 lbs
~0 Gs
60 mm 0.09 kg / 0.20 lbs
480 Gs
0.01 kg / 0.03 lbs
13 g / 0.1 N
 0.08 kg / 0.18 lbs
~0 Gs
70 mm 0.05 kg / 0.10 lbs
342 Gs
0.01 kg / 0.01 lbs
7 g / 0.1 N
 0.04 kg / 0.09 lbs
~0 Gs
80 mm 0.02 kg / 0.05 lbs
253 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
 0.02 kg / 0.05 lbs
~0 Gs
90 mm 0.01 kg / 0.03 lbs
193 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.03 lbs
~0 Gs
100 mm 0.01 kg / 0.02 lbs
150 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products interact from a wider radius than a neodymium and metal setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of action. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Field value for N-N configuration drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Note: Estimates refer to shear force of two matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - precautionary measures
MP 20x5x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 14.5 cm
Hearing aid 10 Gs (1.0 mT) 11.5 cm
Mechanical watch 20 Gs (2.0 mT) 9.0 cm
Mobile device 40 Gs (4.0 mT) 6.5 cm
Remote 50 Gs (5.0 mT) 6.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
A strong magnetic field is a real danger to electronic devices as well as pacemakers. These NdFeB products generate a flux that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and housings. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MP 20x5x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.79 km/h
(6.61 m/s)
 0.24 J
30 mm 24.82 km/h
(6.89 m/s)
 0.26 J
50 mm 24.86 km/h
(6.90 m/s)
 0.26 J
100 mm 24.86 km/h
(6.91 m/s)
 0.26 J
Neodymium magnets are very brittle – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or injury to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Coating parameters (durability)
MP 20x5x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MP 20x5x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 16 116 Mx 161.2 µWb
Pc Coefficient 1.13 High (Stable)
Flux value emitted by the magnet pole. Essential parameter for generator designers as well as sensors. Pc value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 20x5x5 / N38

Environment Effective steel pull Effect
Air (land) 6.49 kg Standard
Water (riverbed) 7.43 kg
(+0.94 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!
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Vertical hold

*Caution: On a vertical surface, the magnet holds just a fraction of its nominal pull.

2. Steel thickness impact

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

3. Temperature resistance

*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) = 1.13

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

Chemical composition

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: 030186-2026
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The ring-shaped magnet MP 20x5x5 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 6.49 kg works great as a door latch, speaker holder, or spacer element in devices.
This is a crucial issue when working with model MP 20x5x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.
These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.
The inner hole diameter determines the maximum size of the mounting element. 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 (20 mm), so it doesn't protrude beyond the outline.
It is a magnetic ring with a diameter of 20 mm and thickness 5 mm. The key parameter here is the lifting capacity amounting to approximately 6.49 kg (force ~63.68 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 5 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Strengths

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They do not lose magnetism, even during approximately 10 years – the decrease in power is only ~1% (based on measurements),
  • They retain their magnetic properties even under external field action,
  • A magnet with a shiny nickel surface looks better,
  • Neodymium magnets generate maximum magnetic induction on a contact point, which increases force concentration,
  • 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...
  • Possibility of accurate modeling and modifying to precise requirements,
  • Fundamental importance in modern industrial fields – they are used in mass storage devices, drive modules, medical equipment, as well as complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • 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 secure oxidation as well as corrosion.
  • Limited possibility of producing threads in the magnet and complex shapes - preferred is casing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to complex production process, their price is higher than average,

Lifting parameters

Maximum magnetic pulling force – what affects it?

Information about lifting capacity was defined for optimal configuration, assuming:
  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • with a thickness of at least 10 mm
  • characterized by smoothness
  • with zero gap (without coatings)
  • during pulling in a direction perpendicular to the mounting surface
  • at temperature room level

Impact of factors on magnetic holding capacity in practice

Real force is affected by specific conditions, such as (from most important):
  • Gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Steel thickness – too thin steel does not accept the full field, causing part of the power to be wasted to the other side.
  • Plate material – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and holding force.
  • Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate lowers the holding force.

Precautions when working with neodymium magnets
This is not a toy

These products are not toys. Swallowing several magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.

ICD Warning

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Permanent damage

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Bodily injuries

Risk of injury: The attraction force is so immense that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.

Nickel coating and allergies

A percentage of the population suffer from a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Prolonged contact might lead to skin redness. It is best to use safety gloves.

Magnet fragility

Neodymium magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them shattering into shards.

Threat to navigation

Navigation devices and smartphones are highly susceptible to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Dust explosion hazard

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Conscious usage

Handle magnets with awareness. Their powerful strength can surprise even professionals. Stay alert and respect their power.

Electronic hazard

Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.

Caution! Learn more about hazards in the article: Magnet Safety Guide.