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MW 7x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010099

GTIN/EAN: 5906301810988

5.00
Load capacity 0.99 kg / 9.76 N Magnetic Induction 307.23 mT / 3072 Gs
Diameter Ø
7 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
0.58 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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0.310 zł net / pcs

0.381 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

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 details - MW 7x2 / N38 - cylindrical magnet

Specification / characteristics - MW 7x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010099
GTIN/EAN 5906301810988
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 Ø 7 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.58 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.99 kg / 9.76 N
Magnetic Induction ~ ? 307.23 mT / 3072 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 7x2 / N38 - cylindrical 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 simulation of the product - technical parameters

The following information represent the outcome of a engineering simulation. Values were calculated on algorithms for the material Nd2Fe14B. Operational performance may differ from theoretical values. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MW 7x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3070 Gs
307.0 mT
 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
 weak grip
1 mm 2332 Gs
233.2 mT
 0.57 kg / 1.26 lbs
571.1 g / 5.6 N
 weak grip
2 mm 1590 Gs
159.0 mT
 0.27 kg / 0.59 lbs
265.5 g / 2.6 N
 weak grip
3 mm 1044 Gs
104.4 mT
 0.11 kg / 0.25 lbs
114.6 g / 1.1 N
 weak grip
5 mm 466 Gs
46.6 mT
 0.02 kg / 0.05 lbs
22.8 g / 0.2 N
 weak grip
10 mm 100 Gs
10.0 mT
 0.00 kg / 0.00 lbs
1.1 g / 0.0 N
 weak grip
15 mm 35 Gs
3.5 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 weak grip
20 mm 16 Gs
1.6 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
30 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
Magnetic force decreases significantly with every mm of gap. Remember that every additional insulation layer (e.g., contamination, varnish, rust) noticeably weakens the grip. Magnetic products work optimally in perfect adhesion; gap drastically cuts the power. Notice how rapidly the load capacity drop, when the product does not adhere flatly to the metal substrate. When planning the mounting, eliminate redundant distances.

Table 2: Shear capacity (vertical surface)
MW 7x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.20 kg / 0.44 lbs
198.0 g / 1.9 N
1 mm Stal (~0.2) 0.11 kg / 0.25 lbs
114.0 g / 1.1 N
2 mm Stal (~0.2) 0.05 kg / 0.12 lbs
54.0 g / 0.5 N
3 mm Stal (~0.2) 0.02 kg / 0.05 lbs
22.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The following data presents the estimated force needed to start the sliding of the magnet downwards along a upright steel plate (assuming standard friction). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 7x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.30 kg / 0.65 lbs
297.0 g / 2.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.20 kg / 0.44 lbs
198.0 g / 1.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.10 kg / 0.22 lbs
99.0 g / 1.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.50 kg / 1.09 lbs
495.0 g / 4.9 N
When placing a holder on a upright plane (e.g., a car body), it you can count on just approx. 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that holders slip easier than they pull off. Want to create a vertical fastening? Remember that the shear force is much weaker than the perpendicular breakaway force. On a painted metal, the holder will give way down under a much lighter load. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 7x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.10 kg / 0.22 lbs
99.0 g / 1.0 N
1 mm
25%
 0.25 kg / 0.55 lbs
247.5 g / 2.4 N
2 mm
50%
 0.50 kg / 1.09 lbs
495.0 g / 4.9 N
3 mm
75%
 0.74 kg / 1.64 lbs
742.5 g / 7.3 N
5 mm
100%
 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
10 mm
100%
 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
11 mm
100%
 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
12 mm
100%
 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
A thin sheet is not enough to focus the full magnetic flux, 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 utilize full efficiency of this neodymium's potential, you require a sufficiently solid backing of metal. The material oversaturation means that on thin elements (e.g., car bodies), the magnet shows lower pull force. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal stability (stability) - thermal limit
MW 7x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
 OK
40 °C -2.2% 0.97 kg / 2.13 lbs
968.2 g / 9.5 N
 OK
60 °C -4.4% 0.95 kg / 2.09 lbs
946.4 g / 9.3 N
80 °C -6.6% 0.92 kg / 2.04 lbs
924.7 g / 9.1 N
100 °C -28.8% 0.70 kg / 1.55 lbs
704.9 g / 6.9 N
Classic neodymiums change their properties power past the thermal threshold. Watch out for overheating – heat can irreversibly damage this product. As the temperature rises, the neodymium's capacity briefly drops. Avoid using this product in hot environments higher than its operating temperature limit. Ignoring the limit will cause destruction of magnetic properties.
*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) risk losing magnetic properties sooner than long magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 7x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.24 kg / 4.93 lbs
4 653 Gs
0.34 kg / 0.74 lbs
335 g / 3.3 N
 N/A
1 mm 1.76 kg / 3.89 lbs
5 454 Gs
0.26 kg / 0.58 lbs
265 g / 2.6 N
 1.59 kg / 3.50 lbs
~0 Gs
2 mm 1.29 kg / 2.84 lbs
4 663 Gs
0.19 kg / 0.43 lbs
193 g / 1.9 N
 1.16 kg / 2.56 lbs
~0 Gs
3 mm 0.89 kg / 1.97 lbs
3 884 Gs
0.13 kg / 0.30 lbs
134 g / 1.3 N
 0.81 kg / 1.77 lbs
~0 Gs
5 mm 0.40 kg / 0.87 lbs
2 581 Gs
0.06 kg / 0.13 lbs
59 g / 0.6 N
 0.36 kg / 0.78 lbs
~0 Gs
10 mm 0.05 kg / 0.11 lbs
932 Gs
0.01 kg / 0.02 lbs
8 g / 0.1 N
 0.05 kg / 0.10 lbs
~0 Gs
20 mm 0.00 kg / 0.01 lbs
200 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
17 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
10 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
6 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
4 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
3 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
2 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products interact from a wider radius than a magnet and sheet setup. Such a system of magnet-to-magnet produces a massive flux and a larger range of performance. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is extreme. The repulsion force is slightly lower 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: Calculations show shear force of a pair of identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MW 7x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Powerful magnet radiation poses a large risk to electronics as well as medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and housings. Special caution must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MW 7x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.73 km/h
(7.15 m/s)
 0.01 J
30 mm 25.75 km/h
(7.15 m/s)
 0.01 J
50 mm 25.75 km/h
(7.15 m/s)
 0.01 J
100 mm 25.75 km/h
(7.15 m/s)
 0.01 J
Magnetic elements are delicate – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely speeds with massive force. Kinetic force can cause material chips or injury to fingers. Be sure to control the product during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MW 7x2 / 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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MW 7x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 284 Mx 12.8 µWb
Pc Coefficient 0.39 Low (Flat)
Flux value emitted by the magnet pole. Key data in coil applications and motors. The Pc coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 7x2 / N38

Environment Effective steel pull Effect
Air (land) 0.99 kg Standard
Water (riverbed) 1.13 kg
(+0.14 kg buoyancy gain)
+14.5%
Rust risk: 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

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

2. Plate thickness effect

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

3. Power loss vs temp

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.39

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Elemental analysis

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

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: 010099-2026
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This product is an exceptionally strong cylindrical magnet, manufactured from modern NdFeB material, which, with dimensions of Ø7x2 mm, guarantees the highest energy density. This specific item features an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.99 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building generators, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 9.76 N with a weight of only 0.58 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 7.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø7x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø7x2 mm, which, at a weight of 0.58 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.99 kg (force ~9.76 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 7 mm. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages and disadvantages of neodymium magnets.

Benefits

Apart from their notable power, neodymium magnets have these key benefits:
  • They do not lose magnetism, even over around 10 years – the drop in strength is only ~1% (theoretically),
  • They possess excellent resistance to magnetic field loss due to external magnetic sources,
  • Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an modern appearance,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to freedom in forming and the ability to adapt to unusual requirements,
  • Universal use in high-tech industry – they serve a role in mass storage devices, motor assemblies, diagnostic systems, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in small systems

Disadvantages

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using cover - magnetic mechanism.
  • Health risk related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these products 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

Maximum lifting force for a neodymium magnet – what contributes to it?

Breakaway force is the result of a measurement for optimal configuration, including:
  • with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose thickness is min. 10 mm
  • with a surface free of scratches
  • without any air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in temp. approx. 20°C

Practical lifting capacity: influencing factors

In practice, the real power is determined by several key aspects, ranked from the most important:
  • Gap (betwixt the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Base massiveness – too thin sheet does not close the flux, causing part of the flux to be escaped into the air.
  • Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Smoothness – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings
Swallowing risk

Product intended for adults. Small elements pose a choking risk, leading to intestinal necrosis. Store out of reach of kids and pets.

Medical interference

For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Fire warning

Dust generated during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Safe operation

Use magnets with awareness. Their huge power can surprise even experienced users. Plan your moves and do not underestimate their force.

Keep away from electronics

GPS units and smartphones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Safe distance

Do not bring magnets close to a wallet, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Crushing risk

Big blocks can break fingers in a fraction of a second. Never place your hand between two attracting surfaces.

Maximum temperature

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

Magnet fragility

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.

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