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MW 25x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010049

GTIN/EAN: 5906301810483

5.00
Load capacity 7.98 kg / 78.25 N Magnetic Induction 230.20 mT / 2302 Gs
Diameter Ø
25 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
18.41 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product parameters »

6.82 zł net / pcs

8.39 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 specification - MW 25x5 / N38 - cylindrical magnet

Specification / characteristics - MW 25x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010049
GTIN/EAN 5906301810483
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 25 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 18.41 g
Magnetization Direction ↑ axial
Load capacity ~ ? 7.98 kg / 78.25 N
Magnetic Induction ~ ? 230.20 mT / 2302 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x5 / 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

Physical simulation of the magnet - technical parameters

The following values are the outcome of a mathematical simulation. Values were calculated on algorithms for the class Nd2Fe14B. Operational conditions might slightly deviate from the simulation results. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MW 25x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2302 Gs
230.2 mT
 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
 strong
1 mm 2189 Gs
218.9 mT
 7.21 kg / 15.91 LBS
7214.9 g / 70.8 N
 strong
2 mm 2050 Gs
205.0 mT
 6.33 kg / 13.95 LBS
6329.3 g / 62.1 N
 strong
3 mm 1895 Gs
189.5 mT
 5.41 kg / 11.93 LBS
5410.7 g / 53.1 N
 strong
5 mm 1570 Gs
157.0 mT
 3.72 kg / 8.19 LBS
3715.4 g / 36.4 N
 strong
10 mm 890 Gs
89.0 mT
 1.19 kg / 2.63 LBS
1192.8 g / 11.7 N
 safe
15 mm 495 Gs
49.5 mT
 0.37 kg / 0.81 LBS
368.5 g / 3.6 N
 safe
20 mm 288 Gs
28.8 mT
 0.12 kg / 0.28 LBS
124.8 g / 1.2 N
 safe
30 mm 116 Gs
11.6 mT
 0.02 kg / 0.04 LBS
20.2 g / 0.2 N
 safe
50 mm 31 Gs
3.1 mT
 0.00 kg / 0.00 LBS
1.4 g / 0.0 N
 safe
Magnetic force weakens drastically per each millimeter of gap. Note that every additional insulation layer (e.g., dirt, paint, rust) significantly diminishes the holding power. Magnets hold most effectively during direct contact; gap weakens the force. Observe how flashily the load capacity fall, when the magnet does not adhere directly to the steel surface. When designing the mounting, discard unnecessary gaps.

Table 2: Sliding load (wall)
MW 25x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.60 kg / 3.52 LBS
1596.0 g / 15.7 N
1 mm Stal (~0.2) 1.44 kg / 3.18 LBS
1442.0 g / 14.1 N
2 mm Stal (~0.2) 1.27 kg / 2.79 LBS
1266.0 g / 12.4 N
3 mm Stal (~0.2) 1.08 kg / 2.39 LBS
1082.0 g / 10.6 N
5 mm Stal (~0.2) 0.74 kg / 1.64 LBS
744.0 g / 7.3 N
10 mm Stal (~0.2) 0.24 kg / 0.52 LBS
238.0 g / 2.3 N
15 mm Stal (~0.2) 0.07 kg / 0.16 LBS
74.0 g / 0.7 N
20 mm Stal (~0.2) 0.02 kg / 0.05 LBS
24.0 g / 0.2 N
30 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
This section calculates the theoretical weight limit required to initiate the downward movement of the magnet down along a vertical metal surface (considering typical friction). The holding force is relative to the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 25x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.39 kg / 5.28 LBS
2394.0 g / 23.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.60 kg / 3.52 LBS
1596.0 g / 15.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.80 kg / 1.76 LBS
798.0 g / 7.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.99 kg / 8.80 LBS
3990.0 g / 39.1 N
When mounting a magnet on a vertical plane (e.g., a fridge), it you can count on barely approx. 1/5 of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that magnets slip easier than they pop off the substrate. Designing a wall mount? Consider that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will slip down under a significantly smaller cargo. Application of an anti-slip coating can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 25x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.80 kg / 1.76 LBS
798.0 g / 7.8 N
1 mm
25%
 2.00 kg / 4.40 LBS
1995.0 g / 19.6 N
2 mm
50%
 3.99 kg / 8.80 LBS
3990.0 g / 39.1 N
3 mm
75%
 5.99 kg / 13.19 LBS
5985.0 g / 58.7 N
5 mm
100%
 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
10 mm
100%
 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
11 mm
100%
 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
12 mm
100%
 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
A thin metal plate is incapable of take in the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the field will pass right through and the holding will be smaller. To achieve the maximum of this magnet's power, you require a sufficiently solid element of steel. The saturation phenomenon causes that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
MW 25x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 7.98 kg / 17.59 LBS
7980.0 g / 78.3 N
 OK
40 °C -2.2% 7.80 kg / 17.21 LBS
7804.4 g / 76.6 N
 OK
60 °C -4.4% 7.63 kg / 16.82 LBS
7628.9 g / 74.8 N
80 °C -6.6% 7.45 kg / 16.43 LBS
7453.3 g / 73.1 N
100 °C -28.8% 5.68 kg / 12.53 LBS
5681.8 g / 55.7 N
Standard neodymium magnets irreversibly lose strength above the temperature limit. Protect against heat – excessive heat can permanently destroy this magnet. With increasing heat, the neodymium's force temporarily lowers. Avoid using this magnet close to ovens higher than its safe range. Exceeding the critical threshold will cause irreversible degradation of magnetic properties.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress than long magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 25x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 16.03 kg / 35.34 LBS
3 871 Gs
2.40 kg / 5.30 LBS
2405 g / 23.6 N
 N/A
1 mm 15.31 kg / 33.75 LBS
4 498 Gs
2.30 kg / 5.06 LBS
2296 g / 22.5 N
 13.78 kg / 30.38 LBS
~0 Gs
2 mm 14.49 kg / 31.95 LBS
4 377 Gs
2.17 kg / 4.79 LBS
2174 g / 21.3 N
 13.05 kg / 28.76 LBS
~0 Gs
3 mm 13.62 kg / 30.03 LBS
4 243 Gs
2.04 kg / 4.50 LBS
2043 g / 20.0 N
 12.26 kg / 27.03 LBS
~0 Gs
5 mm 11.79 kg / 26.00 LBS
3 948 Gs
1.77 kg / 3.90 LBS
1769 g / 17.4 N
 10.61 kg / 23.40 LBS
~0 Gs
10 mm 7.46 kg / 16.46 LBS
3 141 Gs
1.12 kg / 2.47 LBS
1120 g / 11.0 N
 6.72 kg / 14.81 LBS
~0 Gs
20 mm 2.40 kg / 5.28 LBS
1 780 Gs
0.36 kg / 0.79 LBS
359 g / 3.5 N
 2.16 kg / 4.75 LBS
~0 Gs
50 mm 0.10 kg / 0.21 LBS
355 Gs
0.01 kg / 0.03 LBS
14 g / 0.1 N
 0.09 kg / 0.19 LBS
~0 Gs
60 mm 0.04 kg / 0.09 LBS
231 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
 0.04 kg / 0.08 LBS
~0 Gs
70 mm 0.02 kg / 0.04 LBS
158 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
 0.02 kg / 0.04 LBS
~0 Gs
80 mm 0.01 kg / 0.02 LBS
112 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.01 kg / 0.01 LBS
82 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.01 LBS
62 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 magnet and steel combination. The connection of magnet-to-magnet produces a massive flux and a larger range of operation. Want to build a powerful holder? Apply two magnets instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the pinch force is huge. The levitation is a bit weaker than the attraction, but still significant.
*Field value between like poles drops to ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Attention: Estimates refer to friction force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.0 cm
Hearing aid 10 Gs (1.0 mT) 8.0 cm
Mechanical watch 20 Gs (2.0 mT) 6.0 cm
Mobile device 40 Gs (4.0 mT) 5.0 cm
Car key 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
A strong magnetic field is a real danger to IT equipment as well as pacemakers. These neodymiums generate a field that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and housings. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MW 25x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.68 km/h
(6.58 m/s)
 0.40 J
30 mm 25.14 km/h
(6.98 m/s)
 0.45 J
50 mm 25.18 km/h
(6.99 m/s)
 0.45 J
100 mm 25.18 km/h
(6.99 m/s)
 0.45 J
Neodymium magnets are prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Impact energy can cause material chips or dangerous crushing to fingers. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MW 25x5 / 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: Electrical data (Flux)
MW 25x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 13 107 Mx 131.1 µWb
Pc Coefficient 0.29 Low (Flat)
Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. The Pc coefficient defines the working geometry.

Table 11: Submerged application
MW 25x5 / N38

Environment Effective steel pull Effect
Air (land) 7.98 kg Standard
Water (riverbed) 9.14 kg
(+1.16 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
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

*Note: On a vertical surface, the magnet retains just ~20% of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29

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.

Technical specification and ecology

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%

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: 010049-2026
Measurement Calculator

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This product is an incredibly powerful cylinder magnet, manufactured from advanced NdFeB material, which, at dimensions of Ø25x5 mm, guarantees maximum efficiency. This specific item features high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 7.98 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 78.25 N with a weight of only 18.41 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø25x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 25 mm and height 5 mm. The value of 78.25 N means that the magnet is capable of holding a weight many times exceeding its own mass of 18.41 g. The product has a [NiCuNi] coating, which protects the surface against external factors, 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 25 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 through the diameter if your project requires it.

Pros and cons of rare earth magnets.

Advantages

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They retain magnetic properties for around 10 years – the drop is just ~1% (according to analyses),
  • They do not lose their magnetic properties even under close interference source,
  • In other words, due to the metallic layer of gold, the element gains a professional look,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the potential of free shaping and customization to individualized needs, neodymium magnets can be manufactured in a broad palette of geometric configurations, which amplifies use scope,
  • Wide application in high-tech industry – they serve a role in HDD drives, electric drive systems, advanced medical instruments, also modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also raises their durability
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We suggest casing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex shapes.
  • Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

The declared magnet strength refers to the maximum value, obtained under ideal test conditions, meaning:
  • using a plate made of high-permeability steel, acting as a circuit closing element
  • whose transverse dimension is min. 10 mm
  • with a surface cleaned and smooth
  • with total lack of distance (no impurities)
  • during detachment in a direction vertical to the plane
  • in neutral thermal conditions

What influences lifting capacity in practice

Holding efficiency is influenced by working environment parameters, including (from most important):
  • Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Load vector – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Surface condition – ground elements ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
  • Temperature – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets
Life threat

Warning for patients: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Material brittleness

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them breaking into shards.

Keep away from computers

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.

Pinching danger

Big blocks can break fingers in a fraction of a second. Do not place your hand between two attracting surfaces.

Safe operation

Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Nickel coating and allergies

Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness occurs, immediately stop handling magnets and use protective gear.

Dust is flammable

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

Threat to navigation

Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Choking Hazard

NdFeB magnets are not toys. Swallowing several magnets may result in them pinching intestinal walls, which constitutes a critical condition and necessitates urgent medical intervention.

Do not overheat magnets

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.

Important! Want to know more? Check our post: Why are neodymium magnets dangerous?