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MW 20x2.5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010042

GTIN/EAN: 5906301810414

5.00
Load capacity 2.41 kg / 23.63 N Magnetic Induction 150.34 mT / 1503 Gs
Diameter Ø
20 mm [±0,1 mm]
Height
2.5 mm [±0,1 mm]
Weight
5.89 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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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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Physical properties - MW 20x2.5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x2.5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010042
GTIN/EAN 5906301810414
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 20 mm [±0,1 mm]
Height 2.5 mm [±0,1 mm]
Weight 5.89 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.41 kg / 23.63 N
Magnetic Induction ~ ? 150.34 mT / 1503 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x2.5 / 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

Technical modeling of the product - technical parameters

Presented values represent the outcome of a engineering simulation. Values are based on models for the material Nd2Fe14B. Real-world conditions might slightly differ. Treat these data as a reference point during assembly planning.

Table 1: Static force (force vs gap) - power drop
MW 20x2.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1503 Gs
150.3 mT
 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
 medium risk
1 mm 1431 Gs
143.1 mT
 2.18 kg / 4.82 lbs
2184.9 g / 21.4 N
 medium risk
2 mm 1328 Gs
132.8 mT
 1.88 kg / 4.15 lbs
1882.0 g / 18.5 N
 safe
3 mm 1206 Gs
120.6 mT
 1.55 kg / 3.42 lbs
1552.2 g / 15.2 N
 safe
5 mm 947 Gs
94.7 mT
 0.96 kg / 2.11 lbs
957.1 g / 9.4 N
 safe
10 mm 457 Gs
45.7 mT
 0.22 kg / 0.49 lbs
223.1 g / 2.2 N
 safe
15 mm 224 Gs
22.4 mT
 0.05 kg / 0.12 lbs
53.7 g / 0.5 N
 safe
20 mm 120 Gs
12.0 mT
 0.02 kg / 0.03 lbs
15.4 g / 0.2 N
 safe
30 mm 44 Gs
4.4 mT
 0.00 kg / 0.00 lbs
2.1 g / 0.0 N
 safe
50 mm 11 Gs
1.1 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 safe
Pulling power decreases drastically with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., contamination, varnish, rust) strongly diminishes the holding power. Magnetic products work strongest during direct contact; gap drastically cuts the power. Observe how quickly the parameters plummet, when the magnet does not touch directly to the steel surface. When calculating the mounting, discard additional spacers.

Table 2: Vertical force (wall)
MW 20x2.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.48 kg / 1.06 lbs
482.0 g / 4.7 N
1 mm Stal (~0.2) 0.44 kg / 0.96 lbs
436.0 g / 4.3 N
2 mm Stal (~0.2) 0.38 kg / 0.83 lbs
376.0 g / 3.7 N
3 mm Stal (~0.2) 0.31 kg / 0.68 lbs
310.0 g / 3.0 N
5 mm Stal (~0.2) 0.19 kg / 0.42 lbs
192.0 g / 1.9 N
10 mm Stal (~0.2) 0.04 kg / 0.10 lbs
44.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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 defines the approximate shear load sufficient to cause the downward movement of the magnet vertically against a upright steel wall (considering standard friction). This value varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x2.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.72 kg / 1.59 lbs
723.0 g / 7.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.48 kg / 1.06 lbs
482.0 g / 4.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.24 kg / 0.53 lbs
241.0 g / 2.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.21 kg / 2.66 lbs
1205.0 g / 11.8 N
When placing a holder on a upright plane (e.g., a board), it will only hold barely about 20%-30% of nominal attraction strength. Gravity and a low friction coefficient influence the fact that magnets slip faster than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a noticeably lighter load. Utilizing a rubberized pad can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 20x2.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.24 kg / 0.53 lbs
241.0 g / 2.4 N
1 mm
25%
 0.60 kg / 1.33 lbs
602.5 g / 5.9 N
2 mm
50%
 1.21 kg / 2.66 lbs
1205.0 g / 11.8 N
3 mm
75%
 1.81 kg / 3.98 lbs
1807.5 g / 17.7 N
5 mm
100%
 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
10 mm
100%
 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
11 mm
100%
 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
12 mm
100%
 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
A too thin steel is unable to focus the entire magnetic field, which wastes potential of the holder. If you attach a powerful product to a thin surface, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you need a suitably thick backing of steel. The material oversaturation means that on delicate walls (e.g., appliance housings), the magnet works worse. We advise picking the steel thickness according to the table below.

Table 5: Working in heat (stability) - power drop
MW 20x2.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.41 kg / 5.31 lbs
2410.0 g / 23.6 N
 OK
40 °C -2.2% 2.36 kg / 5.20 lbs
2357.0 g / 23.1 N
 OK
60 °C -4.4% 2.30 kg / 5.08 lbs
2304.0 g / 22.6 N
80 °C -6.6% 2.25 kg / 4.96 lbs
2250.9 g / 22.1 N
100 °C -28.8% 1.72 kg / 3.78 lbs
1715.9 g / 16.8 N
Standard neodymium magnets change their properties power after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently destroy this magnet. As the temperature rises, the neodymium's force briefly lowers. Do not use this magnet near heat sources higher than its safe range. Ignoring the limit will lead to destruction of magnetic properties.
*Engineering note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) risk losing magnetic properties at lower temperatures than taller cylinders. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MW 20x2.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.38 kg / 9.65 lbs
2 771 Gs
0.66 kg / 1.45 lbs
656 g / 6.4 N
 N/A
1 mm 4.20 kg / 9.25 lbs
2 944 Gs
0.63 kg / 1.39 lbs
629 g / 6.2 N
 3.78 kg / 8.33 lbs
~0 Gs
2 mm 3.97 kg / 8.75 lbs
2 862 Gs
0.60 kg / 1.31 lbs
595 g / 5.8 N
 3.57 kg / 7.87 lbs
~0 Gs
3 mm 3.70 kg / 8.17 lbs
2 766 Gs
0.56 kg / 1.22 lbs
556 g / 5.5 N
 3.33 kg / 7.35 lbs
~0 Gs
5 mm 3.12 kg / 6.88 lbs
2 538 Gs
0.47 kg / 1.03 lbs
468 g / 4.6 N
 2.81 kg / 6.19 lbs
~0 Gs
10 mm 1.74 kg / 3.83 lbs
1 895 Gs
0.26 kg / 0.57 lbs
261 g / 2.6 N
 1.56 kg / 3.45 lbs
~0 Gs
20 mm 0.41 kg / 0.89 lbs
915 Gs
0.06 kg / 0.13 lbs
61 g / 0.6 N
 0.36 kg / 0.80 lbs
~0 Gs
50 mm 0.01 kg / 0.02 lbs
140 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.01 lbs
88 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
58 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
41 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
29 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
22 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 significantly greater distance than a magnet and sheet combination. The connection of magnet-to-magnet generates a stronger field and a wider radius of performance. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is huge. The levitation is a bit weaker than the attraction, but still large.
*Field value for N-N configuration is approximately ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Results apply to friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 20x2.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.0 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Timepiece 20 Gs (2.0 mT) 4.5 cm
Mobile device 40 Gs (4.0 mT) 3.5 cm
Remote 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field poses a real danger to electronic devices and pacemakers. These magnets produce a flux that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 20x2.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 21.89 km/h
(6.08 m/s)
 0.11 J
30 mm 22.67 km/h
(6.30 m/s)
 0.12 J
50 mm 22.68 km/h
(6.30 m/s)
 0.12 J
100 mm 22.68 km/h
(6.30 m/s)
 0.12 J
NdFeB products are delicate – a strong collision with metal causes immediate chipping. Watch the impact speed – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MW 20x2.5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Pc)
MW 20x2.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 996 Mx 60.0 µWb
Pc Coefficient 0.19 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data when building generators as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 20x2.5 / N38

Environment Effective steel pull Effect
Air (land) 2.41 kg Standard
Water (riverbed) 2.76 kg
(+0.35 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

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

2. Steel saturation

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

3. Heat tolerance

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.19

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: 010042-2026
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The presented product is an extremely powerful cylindrical magnet, manufactured from durable NdFeB material, which, at dimensions of Ø20x2.5 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 2.41 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 23.63 N with a weight of only 5.89 g, this rod is indispensable in miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø20x2.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
This model is characterized by dimensions Ø20x2.5 mm, which, at a weight of 5.89 g, makes it an element with high magnetic energy density. The value of 23.63 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.89 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 2.5 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Strengths and weaknesses of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They do not lose magnetism, even during approximately 10 years – the reduction in lifting capacity is only ~1% (based on measurements),
  • They maintain their magnetic properties even under external field action,
  • Thanks to the elegant finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
  • Neodymium magnets generate maximum magnetic induction on a contact point, which ensures high operational effectiveness,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Due to the option of accurate forming and customization to custom needs, magnetic components can be manufactured in a variety of shapes and sizes, which increases their versatility,
  • Fundamental importance in high-tech industry – they are used in HDD drives, brushless drives, precision medical tools, also multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in creating nuts and complex forms in magnets, we propose using a housing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Highest magnetic holding force – what affects it?

Holding force of 2.41 kg is a result of laboratory testing conducted under specific, ideal conditions:
  • with the application of a yoke made of special test steel, ensuring full magnetic saturation
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a plane perfectly flat
  • without the slightest air gap between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

In practice, the real power depends on several key aspects, listed from the most important:
  • Distance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be wasted to the other side.
  • Plate material – low-carbon steel attracts best. Alloy steels decrease magnetic properties and holding force.
  • Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate reduces the holding force.

Warnings
Beware of splinters

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Permanent damage

Avoid heat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Medical implants

Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Powerful field

Be careful. Rare earth magnets attract from a distance and snap with massive power, often quicker than you can move away.

Allergic reactions

A percentage of the population have a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Frequent touching can result in a rash. We suggest use safety gloves.

Flammability

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

GPS and phone interference

Note: neodymium magnets generate a field that confuses precision electronics. Maintain a separation from your phone, tablet, and navigation systems.

Safe distance

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

Crushing risk

Pinching hazard: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

Choking Hazard

Neodymium magnets are not suitable for play. Accidental ingestion of several magnets may result in them connecting inside the digestive tract, which poses a critical condition and necessitates immediate surgery.

Security! Need more info? Read our article: Why are neodymium magnets dangerous?