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MW 20x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010044

GTIN/EAN: 5906301810438

5.00
Load capacity 6.93 kg / 67.95 N Magnetic Induction 277.16 mT / 2772 Gs
Diameter Ø
20 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
11.78 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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4.52 zł net / 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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Detailed specification - MW 20x5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010044
GTIN/EAN 5906301810438
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 5 mm [±0,1 mm]
Weight 11.78 g
Magnetization Direction ↑ axial
Load capacity ~ ? 6.93 kg / 67.95 N
Magnetic Induction ~ ? 277.16 mT / 2772 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x5 / 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

Physical modeling of the product - data

Presented values constitute the result of a engineering calculation. Results are based on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ. Treat these calculations as a reference point when designing systems.

Table 1: Static force (force vs gap) - power drop
MW 20x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2771 Gs
277.1 mT
 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
 medium risk
1 mm 2573 Gs
257.3 mT
 5.97 kg / 13.17 LBS
5975.0 g / 58.6 N
 medium risk
2 mm 2340 Gs
234.0 mT
 4.94 kg / 10.89 LBS
4940.1 g / 48.5 N
 medium risk
3 mm 2092 Gs
209.2 mT
 3.95 kg / 8.70 LBS
3948.3 g / 38.7 N
 medium risk
5 mm 1611 Gs
161.1 mT
 2.34 kg / 5.17 LBS
2343.4 g / 23.0 N
 medium risk
10 mm 775 Gs
77.5 mT
 0.54 kg / 1.19 LBS
541.6 g / 5.3 N
 weak grip
15 mm 387 Gs
38.7 mT
 0.13 kg / 0.30 LBS
135.0 g / 1.3 N
 weak grip
20 mm 211 Gs
21.1 mT
 0.04 kg / 0.09 LBS
40.2 g / 0.4 N
 weak grip
30 mm 80 Gs
8.0 mT
 0.01 kg / 0.01 LBS
5.7 g / 0.1 N
 weak grip
50 mm 20 Gs
2.0 mT
 0.00 kg / 0.00 LBS
0.4 g / 0.0 N
 weak grip
Pulling power decreases significantly with every subsequent millimeter of gap. Remember that every additional insulation layer (e.g., contamination, varnish, rust) noticeably reduces the pull force. Neodymiums work most effectively during direct contact; air break nullifies the force. See how rapidly the load capacity drop, when the product does not adhere tightly to the steel surface. When designing the assembly, discard redundant distances.

Table 2: Vertical hold (vertical surface)
MW 20x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.39 kg / 3.06 LBS
1386.0 g / 13.6 N
1 mm Stal (~0.2) 1.19 kg / 2.63 LBS
1194.0 g / 11.7 N
2 mm Stal (~0.2) 0.99 kg / 2.18 LBS
988.0 g / 9.7 N
3 mm Stal (~0.2) 0.79 kg / 1.74 LBS
790.0 g / 7.7 N
5 mm Stal (~0.2) 0.47 kg / 1.03 LBS
468.0 g / 4.6 N
10 mm Stal (~0.2) 0.11 kg / 0.24 LBS
108.0 g / 1.1 N
15 mm Stal (~0.2) 0.03 kg / 0.06 LBS
26.0 g / 0.3 N
20 mm Stal (~0.2) 0.01 kg / 0.02 LBS
8.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The table below presents the approximate weight limit necessary to cause the downward movement of the magnet vertically along a vertical steel wall (assuming typical friction coefficient). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.08 kg / 4.58 LBS
2079.0 g / 20.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.39 kg / 3.06 LBS
1386.0 g / 13.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.69 kg / 1.53 LBS
693.0 g / 6.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.47 kg / 7.64 LBS
3465.0 g / 34.0 N
When placing a magnet on a vertical surface (e.g., a fridge), it you can count on barely approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that products slide down easier than they pop off the substrate. Designing a wall mount? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the magnet will slip down under a significantly smaller cargo. Using a rubber layer can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MW 20x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.69 kg / 1.53 LBS
693.0 g / 6.8 N
1 mm
25%
 1.73 kg / 3.82 LBS
1732.5 g / 17.0 N
2 mm
50%
 3.47 kg / 7.64 LBS
3465.0 g / 34.0 N
3 mm
75%
 5.20 kg / 11.46 LBS
5197.5 g / 51.0 N
5 mm
100%
 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
10 mm
100%
 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
11 mm
100%
 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
12 mm
100%
 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
A thin metal plate cannot conduct the entire magnetic field, which squanders power of the magnet. Should you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you require a sufficiently solid piece of metal. The material oversaturation causes that on delicate walls (e.g., appliance housings), the magnet holds weaker. We advise picking the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 20x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 6.93 kg / 15.28 LBS
6930.0 g / 68.0 N
 OK
40 °C -2.2% 6.78 kg / 14.94 LBS
6777.5 g / 66.5 N
 OK
60 °C -4.4% 6.63 kg / 14.61 LBS
6625.1 g / 65.0 N
80 °C -6.6% 6.47 kg / 14.27 LBS
6472.6 g / 63.5 N
100 °C -28.8% 4.93 kg / 10.88 LBS
4934.2 g / 48.4 N
Classic neodymiums change their properties parameters after exceeding the maximum temperature. Watch out for overheating – high temperature can permanently destroy this product. As the temperature rises, the neodymium's power briefly drops. Refrain from using this product close to ovens exceeding its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetic properties.
*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 20x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 14.87 kg / 32.79 LBS
4 380 Gs
2.23 kg / 4.92 LBS
2231 g / 21.9 N
 N/A
1 mm 13.89 kg / 30.63 LBS
5 357 Gs
2.08 kg / 4.59 LBS
2084 g / 20.4 N
 12.50 kg / 27.57 LBS
~0 Gs
2 mm 12.82 kg / 28.27 LBS
5 146 Gs
1.92 kg / 4.24 LBS
1923 g / 18.9 N
 11.54 kg / 25.44 LBS
~0 Gs
3 mm 11.71 kg / 25.82 LBS
4 918 Gs
1.76 kg / 3.87 LBS
1757 g / 17.2 N
 10.54 kg / 23.24 LBS
~0 Gs
5 mm 9.51 kg / 20.97 LBS
4 433 Gs
1.43 kg / 3.15 LBS
1427 g / 14.0 N
 8.56 kg / 18.88 LBS
~0 Gs
10 mm 5.03 kg / 11.09 LBS
3 223 Gs
0.75 kg / 1.66 LBS
754 g / 7.4 N
 4.53 kg / 9.98 LBS
~0 Gs
20 mm 1.16 kg / 2.56 LBS
1 549 Gs
0.17 kg / 0.38 LBS
174 g / 1.7 N
 1.05 kg / 2.31 LBS
~0 Gs
50 mm 0.03 kg / 0.07 LBS
251 Gs
0.00 kg / 0.01 LBS
5 g / 0.0 N
 0.03 kg / 0.06 LBS
~0 Gs
60 mm 0.01 kg / 0.03 LBS
159 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
 0.01 kg / 0.02 LBS
~0 Gs
70 mm 0.01 kg / 0.01 LBS
107 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.01 LBS
75 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
54 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
41 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 neodymium and metal setup. The setup of two magnets produces a massive flux and a larger range of action. Planning to create a powerful holder? Use a pair of magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the collision energy is massive. The repulsion force is a bit weaker than the attraction, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Note: Results show shear force of two identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 20x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 6.5 cm
Timepiece 20 Gs (2.0 mT) 5.5 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Remote 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation poses a real danger to electronics as well as pacemakers. These NdFeB products generate a field that disrupts operation of sensitive medical devices. Be aware: the unseen radiation penetrates the body and glass. Special caution must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MW 20x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.91 km/h
(6.92 m/s)
 0.28 J
30 mm 25.76 km/h
(7.16 m/s)
 0.30 J
50 mm 25.78 km/h
(7.16 m/s)
 0.30 J
100 mm 25.78 km/h
(7.16 m/s)
 0.30 J
NdFeB products are prone to chipping – a violent impact against metal can result in shattering. Control the attraction moment – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments 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 ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Coating parameters (durability)
MW 20x5 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 20x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 9 675 Mx 96.7 µWb
Pc Coefficient 0.35 Low (Flat)
Total magnetic flux passing through the pole surface. Key data when building generators and motors. Pc value defines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 20x5 / N38

Environment Effective steel pull Effect
Air (land) 6.93 kg Standard
Water (riverbed) 7.93 kg
(+1.00 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.
In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Vertical hold

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

2. Steel saturation

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35

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

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%

Ecology and recycling (GPSR)

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: 010044-2026
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The presented product is a very strong rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø20x5 mm, guarantees the highest energy density. The MW 20x5 / N38 component is characterized by a tolerance of ±0.1mm and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 6.93 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 effectively protects it against corrosion in standard operating conditions, ensuring 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 high power of 67.95 N with a weight of only 11.78 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 recommended way is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using two-component epoxy glues. To ensure stability in industry, 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 professional neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø20x5), 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 Ø20x5 mm, which, at a weight of 11.78 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 6.93 kg (force ~67.95 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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 20 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros and cons of Nd2Fe14B magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They do not lose strength, even during nearly 10 years – the drop in power is only ~1% (according to tests),
  • Neodymium magnets are distinguished by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
  • The use of an refined finish of noble metals (nickel, gold, silver) causes the element to present itself better,
  • Magnetic induction on the surface of the magnet turns out to be very high,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
  • Thanks to modularity in forming and the capacity to modify to client solutions,
  • Fundamental importance in electronics industry – they are commonly used in data components, brushless drives, diagnostic systems, as well as modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Cons of neodymium magnets: application proposals
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited possibility of producing threads in the magnet and complex shapes - preferred is casing - mounting mechanism.
  • Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these devices 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

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

Information about lifting capacity was determined for the most favorable conditions, taking into account:
  • with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with a plane perfectly flat
  • with total lack of distance (no coatings)
  • for force acting at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

In real-world applications, the actual holding force depends on many variables, presented from the most important:
  • Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
  • Material type – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet and the plate decreases the holding force.

Safety rules for work with NdFeB magnets
Magnetic interference

Be aware: neodymium magnets produce a field that interferes with precision electronics. Maintain a separation from your phone, tablet, and GPS.

Bone fractures

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Use thick gloves.

Thermal limits

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

ICD Warning

Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Magnet fragility

Despite metallic appearance, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Protect data

Data protection: Neodymium magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Dust is flammable

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Immense force

Use magnets with awareness. Their huge power can shock even experienced users. Plan your moves and respect their force.

Swallowing risk

Strictly store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are tragic.

Avoid contact if allergic

Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction happens, cease working with magnets and wear gloves.

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