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MW 20x1.5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010039

GTIN/EAN: 5906301810384

5.00
Load capacity 0.97 kg / 9.50 N Magnetic Induction 91.96 mT / 920 Gs
Diameter Ø
20 mm [±0,1 mm]
Height
1.5 mm [±0,1 mm]
Weight
3.53 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
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1.280 zł net / pcs

1.574 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 parameters of the product - MW 20x1.5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x1.5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010039
GTIN/EAN 5906301810384
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 1.5 mm [±0,1 mm]
Weight 3.53 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.97 kg / 9.50 N
Magnetic Induction ~ ? 91.96 mT / 920 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x1.5 / N38 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. 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 simulation of the assembly - technical parameters

These information represent the direct effect of a mathematical analysis. Values were calculated on algorithms for the class Nd2Fe14B. Operational conditions may differ. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs gap) - power drop
MW 20x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 920 Gs
92.0 mT
 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
 low risk
1 mm 887 Gs
88.7 mT
 0.90 kg / 1.99 LBS
902.2 g / 8.9 N
 low risk
2 mm 832 Gs
83.2 mT
 0.79 kg / 1.75 LBS
794.6 g / 7.8 N
 low risk
3 mm 763 Gs
76.3 mT
 0.67 kg / 1.47 LBS
667.4 g / 6.5 N
 low risk
5 mm 606 Gs
60.6 mT
 0.42 kg / 0.93 LBS
421.6 g / 4.1 N
 low risk
10 mm 294 Gs
29.4 mT
 0.10 kg / 0.22 LBS
99.5 g / 1.0 N
 low risk
15 mm 144 Gs
14.4 mT
 0.02 kg / 0.05 LBS
23.6 g / 0.2 N
 low risk
20 mm 76 Gs
7.6 mT
 0.01 kg / 0.01 LBS
6.7 g / 0.1 N
 low risk
30 mm 28 Gs
2.8 mT
 0.00 kg / 0.00 LBS
0.9 g / 0.0 N
 low risk
50 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 low risk
Pulling power weakens sharply per each millimeter of spacing. Keep in mind that even a microscopic distance (e.g., dirt, paint, dust) significantly diminishes the holding power. Neodymiums operate optimally during direct contact; gap weakens the force. Notice how flashily the pull force fall, when the product does not touch tightly to the steel surface. When planning the mounting, discard additional spacers.

Table 2: Slippage capacity (vertical surface)
MW 20x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.19 kg / 0.43 LBS
194.0 g / 1.9 N
1 mm Stal (~0.2) 0.18 kg / 0.40 LBS
180.0 g / 1.8 N
2 mm Stal (~0.2) 0.16 kg / 0.35 LBS
158.0 g / 1.5 N
3 mm Stal (~0.2) 0.13 kg / 0.30 LBS
134.0 g / 1.3 N
5 mm Stal (~0.2) 0.08 kg / 0.19 LBS
84.0 g / 0.8 N
10 mm Stal (~0.2) 0.02 kg / 0.04 LBS
20.0 g / 0.2 N
15 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 indicates the estimated force needed to start the slippage of the magnet down against a vertical steel wall (considering typical friction coefficient). The holding force is relative to the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 20x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.29 kg / 0.64 LBS
291.0 g / 2.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.19 kg / 0.43 LBS
194.0 g / 1.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.10 kg / 0.21 LBS
97.0 g / 1.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.49 kg / 1.07 LBS
485.0 g / 4.8 N
When mounting a magnet on a vertical surface (e.g., a board), it you can count on only about 1/5 of nominal attraction strength. Gravitational force as well as a low friction coefficient mean that products slide down faster than they pull off. Designing a hanger? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a noticeably lighter weight. Using a rubber coating can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 20x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.10 kg / 0.21 LBS
97.0 g / 1.0 N
1 mm
25%
 0.24 kg / 0.53 LBS
242.5 g / 2.4 N
2 mm
50%
 0.49 kg / 1.07 LBS
485.0 g / 4.8 N
3 mm
75%
 0.73 kg / 1.60 LBS
727.5 g / 7.1 N
5 mm
100%
 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
10 mm
100%
 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
11 mm
100%
 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
12 mm
100%
 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
A too thin steel cannot absorb the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To utilize full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The saturation phenomenon causes that on thin elements (e.g., car bodies), the product holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 20x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.97 kg / 2.14 LBS
970.0 g / 9.5 N
 OK
40 °C -2.2% 0.95 kg / 2.09 LBS
948.7 g / 9.3 N
 OK
60 °C -4.4% 0.93 kg / 2.04 LBS
927.3 g / 9.1 N
80 °C -6.6% 0.91 kg / 2.00 LBS
906.0 g / 8.9 N
100 °C -28.8% 0.69 kg / 1.52 LBS
690.6 g / 6.8 N
Classic neodymiums irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. With every degree above norm, the magnet's force briefly lowers. Do not use this product close to ovens exceeding its working range. Exceeding the critical threshold will cause destruction of magnetism.
*Engineering note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) risk losing magnetic properties under lower heat stress compared to rod magnets. Red status in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 20x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.64 kg / 3.61 LBS
1 781 Gs
0.25 kg / 0.54 LBS
246 g / 2.4 N
 N/A
1 mm 1.59 kg / 3.51 LBS
1 813 Gs
0.24 kg / 0.53 LBS
239 g / 2.3 N
 1.43 kg / 3.16 LBS
~0 Gs
2 mm 1.52 kg / 3.36 LBS
1 774 Gs
0.23 kg / 0.50 LBS
228 g / 2.2 N
 1.37 kg / 3.02 LBS
~0 Gs
3 mm 1.44 kg / 3.17 LBS
1 724 Gs
0.22 kg / 0.48 LBS
216 g / 2.1 N
 1.29 kg / 2.85 LBS
~0 Gs
5 mm 1.24 kg / 2.73 LBS
1 598 Gs
0.19 kg / 0.41 LBS
185 g / 1.8 N
 1.11 kg / 2.45 LBS
~0 Gs
10 mm 0.71 kg / 1.57 LBS
1 212 Gs
0.11 kg / 0.24 LBS
107 g / 1.0 N
 0.64 kg / 1.41 LBS
~0 Gs
20 mm 0.17 kg / 0.37 LBS
589 Gs
0.03 kg / 0.06 LBS
25 g / 0.2 N
 0.15 kg / 0.33 LBS
~0 Gs
50 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
60 mm 0.00 kg / 0.00 LBS
55 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
36 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
25 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
18 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
13 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. The connection of two magnets creates a more powerful interaction and a wider radius of action. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when bringing together two magnets, the impact force is massive. The repulsion force is marginally weaker than the attraction, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Important: Calculations demonstrate shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - warnings
MW 20x1.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Powerful magnet radiation is a real danger to IT equipment and medical implants. These magnets generate a field that destroys function of sensitive medical devices. Notice: the unseen radiation penetrates the body and glass. Special caution must be taken by people with hearing aids and drug dispensers. 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: Dynamics (kinetic energy) - collision effects
MW 20x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.48 km/h
(5.13 m/s)
 0.05 J
30 mm 19.15 km/h
(5.32 m/s)
 0.05 J
50 mm 19.16 km/h
(5.32 m/s)
 0.05 J
100 mm 19.16 km/h
(5.32 m/s)
 0.05 J
NdFeB products are prone to chipping – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can destroy the magnet or painful pinches to skin. Always hold the magnet during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Corrosion resistance
MW 20x1.5 / 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)
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: Construction data (Pc)
MW 20x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 979 Mx 39.8 µWb
Pc Coefficient 0.12 Low (Flat)
Total magnetic flux emitted by the pole surface. Key data for generator designers and motors. The Pc coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 20x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.97 kg Standard
Water (riverbed) 1.11 kg
(+0.14 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

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

2. Plate thickness effect

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

3. Thermal stability

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.12

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%

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: 010039-2026
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MW 5x5 / N38 - cylindrical magnet

0.394 zł brutto / pcs
This product is an incredibly powerful cylinder magnet, made from durable NdFeB material, which, with dimensions of Ø20x1.5 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.97 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 9.50 N with a weight of only 3.53 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø20x1.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø20x1.5 mm, which, at a weight of 3.53 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.97 kg (force ~9.50 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 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 20 mm. Such an arrangement is most desirable 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.

Strengths and weaknesses of rare earth magnets.

Pros

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (theoretically),
  • Magnets perfectly protect themselves against demagnetization caused by external fields,
  • In other words, due to the reflective layer of nickel, the element gains visual value,
  • The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • In view of the possibility of flexible forming and adaptation to individualized needs, neodymium magnets can be manufactured in a variety of forms and dimensions, which amplifies use scope,
  • Huge importance in modern technologies – they serve a role in HDD drives, electromotive mechanisms, advanced medical instruments, as well as modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

What to avoid - cons of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complicated shapes.
  • Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets is a challenge,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

Information about lifting capacity was determined for the most favorable conditions, assuming:
  • on a block made of structural steel, optimally conducting the magnetic flux
  • with a thickness of at least 10 mm
  • with a surface free of scratches
  • with direct contact (no paint)
  • for force applied at a right angle (in the magnet axis)
  • at room temperature

Key elements affecting lifting force

In practice, the real power depends on a number of factors, listed from most significant:
  • Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces weaken the grip.
  • Thermal environment – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate decreases the holding force.

Warnings
Safe operation

Handle magnets consciously. Their huge power can surprise even experienced users. Stay alert and do not underestimate their force.

Bone fractures

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Impact on smartphones

A strong magnetic field disrupts the functioning of compasses in phones and navigation systems. Keep magnets near a device to prevent breaking the sensors.

Metal Allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness occurs, immediately stop handling magnets and wear gloves.

Eye protection

Neodymium magnets are sintered ceramics, which means they are fragile like glass. Clashing of two magnets will cause them cracking into shards.

Warning for heart patients

People with a heart stimulator have to keep an safe separation from magnets. The magnetism can disrupt the functioning of the implant.

Keep away from computers

Very strong magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Do not overheat magnets

Regular neodymium magnets (N-type) lose power when the temperature surpasses 80°C. This process is irreversible.

This is not a toy

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.

Dust is flammable

Fire hazard: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.

Security! Need more info? Check our post: Why are neodymium magnets dangerous?