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MW 3x2 zestaw 100 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010539

GTIN/EAN: 5906301815303

Load capacity 0.30 kg / 2.99 N Magnetic Induction 493.99 mT / 4940 Gs
Diameter Ø
3 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
11 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product parameters »

16.25 zł net / pcs

19.99 zł with VAT (23% VAT) / pcs

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Frequently asked questions

Where can I buy strong cylindrical neodymium magnets?
See the available cylinders in the DHIT catalogue. Compare dimensions, grade and the pull-force value on each product card; grade alone does not determine the pull force of a finished magnet.
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Yes, but size alone is not enough to predict the result. Geometry, the steel surface and the direction of load affect the grip. Compare the specifications of the selected dimensions on their product cards.
Which cylindrical magnet can work at a higher temperature?
Check the operating-temperature limit of the particular model rather than assuming one limit for all N grades. The offered N52 models are rated up to 60°C. For hotter applications, ask for a product with a confirmed specification for the actual working temperature.

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 - MW 3x2 zestaw 100 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 3x2 zestaw 100 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010539
GTIN/EAN 5906301815303
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 3 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 11 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.30 kg / 2.99 N
Magnetic Induction ~ ? 493.99 mT / 4940 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 3x2 zestaw 100 szt. / 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 - data

These information are the outcome of a engineering analysis. Results are based on models for the class Nd2Fe14B. Actual conditions may deviate from the simulation results. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - power drop
MW 3x2 zestaw 100 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4928 Gs
492.8 mT
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
 weak grip
1 mm 2106 Gs
210.6 mT
 0.05 kg / 0.12 lbs
54.8 g / 0.5 N
 weak grip
2 mm 845 Gs
84.5 mT
 0.01 kg / 0.02 lbs
8.8 g / 0.1 N
 weak grip
3 mm 393 Gs
39.3 mT
 0.00 kg / 0.00 lbs
1.9 g / 0.0 N
 weak grip
5 mm 124 Gs
12.4 mT
 0.00 kg / 0.00 lbs
0.2 g / 0.0 N
 weak grip
10 mm 21 Gs
2.1 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
15 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
20 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
30 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
50 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 weak grip
Magnetic force drops significantly with every subsequent millimeter of distance. Keep in mind that even a microscopic distance (e.g., contamination, paint, veneer) strongly reduces the pull force. Magnetic products operate strongest during direct contact; distance drastically cuts the force. See how rapidly the parameters fall, when the product does not adhere flatly to the steel surface. When calculating the mounting, eliminate unnecessary gaps.

Table 2: Slippage load (vertical surface)
MW 3x2 zestaw 100 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.06 kg / 0.13 lbs
60.0 g / 0.6 N
1 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
2 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
3 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
5 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The table below shows the estimated holding capacity necessary to initiate the sliding of the magnet down on a vertical steel wall (assuming typical friction). This parameter is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 3x2 zestaw 100 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.09 kg / 0.20 lbs
90.0 g / 0.9 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.06 kg / 0.13 lbs
60.0 g / 0.6 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.03 kg / 0.07 lbs
30.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.15 kg / 0.33 lbs
150.0 g / 1.5 N
When placing a magnet on a vertical surface (e.g., a fridge), it you can count on barely approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that magnets slip easier than they pull off. Designing a wall mount? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a noticeably lighter load. Utilizing a rubberized layer can drastically improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 3x2 zestaw 100 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.03 kg / 0.07 lbs
30.0 g / 0.3 N
1 mm
25%
 0.08 kg / 0.17 lbs
75.0 g / 0.7 N
2 mm
50%
 0.15 kg / 0.33 lbs
150.0 g / 1.5 N
3 mm
75%
 0.22 kg / 0.50 lbs
225.0 g / 2.2 N
5 mm
100%
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
10 mm
100%
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
11 mm
100%
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
12 mm
100%
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
A thin sheet is incapable of conduct the entire magnetic field, which wastes potential of the magnet. Should you install a neodymium to a weak sheet, the magnetism will pass right through and the holding will be smaller. To achieve full efficiency of this magnet's potential, you require a sufficiently solid element of metal. The saturation phenomenon causes that on delicate walls (e.g., car bodies), the holder shows lower pull force. We advise picking the steel thickness according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MW 3x2 zestaw 100 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
 Estimate
40 °C -4.4% 0.29 kg / 0.63 lbs
286.9 g / 2.8 N
 Estimate
60 °C -8.6% 0.27 kg / 0.60 lbs
274.2 g / 2.7 N
 Estimate
80 °C -12.8% 0.26 kg / 0.58 lbs
261.7 g / 2.6 N
 Material limit
100 °C — — Out of range — no model
The table estimates the reversible force change relative to 20°C, assuming a Br coefficient of -0.11%/°C and force proportional to Br². This is a simplified model with unchanged contact and geometry, not a measurement. Above the material limit, neither force nor irreversible magnetization loss is predicted.
The temperature limit comes from this product’s material data. Permissible conditions also depend on geometry and the magnetic circuit. Without B-H curves for the specific grade and temperature, Pc alone does not determine irreversible demagnetization. Values within the material range do not guarantee the allowable temperature of the complete assembly.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 3x2 zestaw 100 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.06 kg / 2.33 lbs
5 766 Gs
0.16 kg / 0.35 lbs
159 g / 1.6 N
 N/A
1 mm 0.49 kg / 1.08 lbs
6 712 Gs
0.07 kg / 0.16 lbs
74 g / 0.7 N
 0.44 kg / 0.97 lbs
~0 Gs
2 mm 0.19 kg / 0.43 lbs
4 213 Gs
0.03 kg / 0.06 lbs
29 g / 0.3 N
 0.17 kg / 0.38 lbs
~0 Gs
3 mm 0.08 kg / 0.17 lbs
2 629 Gs
0.01 kg / 0.02 lbs
11 g / 0.1 N
 0.07 kg / 0.15 lbs
~0 Gs
5 mm 0.01 kg / 0.03 lbs
1 131 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.03 lbs
~0 Gs
10 mm 0.00 kg / 0.00 lbs
248 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
20 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
50 mm 0.00 kg / 0.00 lbs
3 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
2 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
1 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
1 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
1 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
0 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 sheet combination. The connection of magnet-to-magnet generates a stronger field and a larger range of operation. Designing a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when bringing together two magnets, the collision energy is huge. The repulsion force is marginally weaker than the attraction, but still significant.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
* Estimates apply to friction force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Axial field levels — not safety zones
MW 3x2 zestaw 100 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 2.0 cm
< 10 Gs < 1.0 mT 1.5 cm
< 20 Gs < 2.0 mT 1.5 cm
< 40 Gs < 4.0 mT 1.0 cm
< 50 Gs < 5.0 mT 1.0 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm
Reference field levels for a model of one magnet, on its axis in air, with a 5 mm distance step. These are not device immunity limits or safe distances for implants. Do not use this table to assess the safety of a pacemaker, defibrillator or other implant; follow the device manufacturer’s and your clinician’s guidance. Steel and other magnets change the field distribution.

Table 8: Dynamics (cracking risk) - collision effects
MW 3x2 zestaw 100 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 2.06 km/h
(0.57 m/s)
 0.00 J
30 mm 2.06 km/h
(0.57 m/s)
 0.00 J
50 mm 2.06 km/h
(0.57 m/s)
 0.00 J
100 mm 2.06 km/h
(0.57 m/s)
 0.00 J
NdFeB products are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Striking energy can cause material chips or injury to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MW 3x2 zestaw 100 szt. / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 3x2 zestaw 100 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 353 Mx 3.5 µWb
Pc Coefficient 0.71 High (Stable)
Total magnetic flux passing through the pole surface. Essential parameter in coil applications and motors. Pc value defines the working geometry.

Table 11: Submerged application
MW 3x2 zestaw 100 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.30 kg Standard
Water (riverbed) 0.34 kg
(+0.04 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!
The magnetic field penetrates through water without any losses. 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 merely a fraction of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.71

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 and environmental data

Chemical composition

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: 010539-2026
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The offered product is an incredibly powerful rod magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø3x2 mm, guarantees the highest energy density. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.30 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 2.99 N with a weight of only 11 g, this rod is indispensable in miniature devices and wherever every gram matters.
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., 3.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Choose the material grade together with the dimensions and working conditions. A grade designation alone does not determine the pull force of the finished magnet. Check the properties and working temperature of this specific model on its product card; contact us before ordering for an unusual application.
This model is characterized by dimensions Ø3x2 mm, which, at a weight of 11 g, makes it an element with high magnetic energy density. The value of 2.99 N means that the magnet is capable of holding a weight many times exceeding its own mass of 11 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 3 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.

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their tremendous pulling force, neodymium magnets offer the following advantages:
  • They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (in testing),
  • They retain their magnetic properties even under close interference source,
  • Thanks to the shimmering finish, the surface of nickel, gold, or silver gives an clean appearance,
  • Magnets exhibit excellent magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the potential of accurate molding and adaptation to custom solutions, neodymium magnets can be produced in a broad palette of forms and dimensions, which makes them more universal,
  • Universal use in modern industrial fields – they are used in HDD drives, drive modules, medical equipment, also modern systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Problematic aspects of neodymium magnets: application proposals
  • 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 protects them against impacts but also increases their durability
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing threads and complicated shapes in magnets, we recommend using casing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these devices can be problematic in diagnostics medical when they are in the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Maximum magnetic pulling force – what affects it?

The lifting capacity listed is a result of laboratory testing conducted under specific, ideal conditions:
  • on a plate made of structural steel, optimally conducting the magnetic field
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by even structure
  • under conditions of ideal adhesion (metal-to-metal)
  • under vertical force direction (90-degree angle)
  • at room temperature

Lifting capacity in real conditions – factors

Real force is influenced by working environment parameters, mainly (from priority):
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be wasted into the air.
  • Steel type – mild steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
  • Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.

Precautions when working with neodymium magnets
Handling rules

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Serious injuries

Large magnets can smash fingers instantly. Do not place your hand between two strong magnets.

Product not for children

These products are not toys. Swallowing a few magnets can lead to them attracting across intestines, which constitutes a direct threat to life and requires immediate surgery.

Protective goggles

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Electronic hazard

Avoid bringing magnets close to a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Magnetic interference

GPS units and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Allergic reactions

Nickel alert: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, cease working with magnets and use protective gear.

Dust explosion hazard

Powder generated during cutting of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Permanent damage

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Warning for heart patients

Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Important! Need more info? Check our post: Are neodymium magnets dangerous?