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MW 12x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010018

GTIN/EAN: 5906301810179

5.00
Load capacity 2.49 kg / 24.43 N Magnetic Induction 277.09 mT / 2771 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
2.54 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product specifications »

1.340 zł net / pcs

1.648 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 data of the product - MW 12x3 / N38 - cylindrical magnet

Specification / characteristics - MW 12x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010018
GTIN/EAN 5906301810179
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 12 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 2.54 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.49 kg / 24.43 N
Magnetic Induction ~ ? 277.09 mT / 2771 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x3 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Technical modeling of the assembly - report

The following values constitute the outcome of a physical simulation. Results were calculated on algorithms for the class Nd2Fe14B. Actual performance might slightly deviate from the simulation results. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - characteristics
MW 12x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2770 Gs
277.0 mT
 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
 warning
1 mm 2420 Gs
242.0 mT
 1.90 kg / 4.19 pounds
1900.6 g / 18.6 N
 safe
2 mm 2009 Gs
200.9 mT
 1.31 kg / 2.89 pounds
1309.4 g / 12.8 N
 safe
3 mm 1611 Gs
161.1 mT
 0.84 kg / 1.86 pounds
842.7 g / 8.3 N
 safe
5 mm 991 Gs
99.1 mT
 0.32 kg / 0.70 pounds
318.7 g / 3.1 N
 safe
10 mm 313 Gs
31.3 mT
 0.03 kg / 0.07 pounds
31.8 g / 0.3 N
 safe
15 mm 125 Gs
12.5 mT
 0.01 kg / 0.01 pounds
5.1 g / 0.0 N
 safe
20 mm 61 Gs
6.1 mT
 0.00 kg / 0.00 pounds
1.2 g / 0.0 N
 safe
30 mm 20 Gs
2.0 mT
 0.00 kg / 0.00 pounds
0.1 g / 0.0 N
 safe
50 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Magnetic force decreases drastically per each millimeter of spacing. Remember that even a microscopic distance (e.g., contamination, paint, dust) strongly weakens the grip. Magnets operate most effectively in perfect adhesion; gap drastically cuts the force. Observe how flashily the pull force fall, when the magnet does not adhere directly to the metal substrate. When calculating the arrangement, discard additional spacers.

Table 2: Vertical force (wall)
MW 12x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.50 kg / 1.10 pounds
498.0 g / 4.9 N
1 mm Stal (~0.2) 0.38 kg / 0.84 pounds
380.0 g / 3.7 N
2 mm Stal (~0.2) 0.26 kg / 0.58 pounds
262.0 g / 2.6 N
3 mm Stal (~0.2) 0.17 kg / 0.37 pounds
168.0 g / 1.6 N
5 mm Stal (~0.2) 0.06 kg / 0.14 pounds
64.0 g / 0.6 N
10 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below calculates the approximate force necessary to cause the shifting of the magnet downwards along a vertical steel plate (assuming typical friction). This value is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 12x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.75 kg / 1.65 pounds
747.0 g / 7.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.50 kg / 1.10 pounds
498.0 g / 4.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.25 kg / 0.55 pounds
249.0 g / 2.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.25 kg / 2.74 pounds
1245.0 g / 12.2 N
When placing a holder on a vertical wall (e.g., a car body), it you can count on just approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip influence the fact that products move down easier than they pull off. Designing a vertical fastening? Consider that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the holder will slide down under a much lighter weight. Application of an anti-slip coating can significantly raise the stability.

Table 4: Steel thickness (saturation) - power losses
MW 12x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.25 kg / 0.55 pounds
249.0 g / 2.4 N
1 mm
25%
 0.62 kg / 1.37 pounds
622.5 g / 6.1 N
2 mm
50%
 1.25 kg / 2.74 pounds
1245.0 g / 12.2 N
3 mm
75%
 1.87 kg / 4.12 pounds
1867.5 g / 18.3 N
5 mm
100%
 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
10 mm
100%
 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
11 mm
100%
 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
12 mm
100%
 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
A too thin steel is unable to conduct the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To squeeze 100% of this magnet's potential, you require a sufficiently solid backing of steel. The saturation phenomenon causes that on sheet metal structures (e.g., thin profiles), the magnet holds weaker. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MW 12x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.49 kg / 5.49 pounds
2490.0 g / 24.4 N
 OK
40 °C -2.2% 2.44 kg / 5.37 pounds
2435.2 g / 23.9 N
 OK
60 °C -4.4% 2.38 kg / 5.25 pounds
2380.4 g / 23.4 N
80 °C -6.6% 2.33 kg / 5.13 pounds
2325.7 g / 22.8 N
100 °C -28.8% 1.77 kg / 3.91 pounds
1772.9 g / 17.4 N
Ordinary NdFeB products change their properties power above the temperature limit. Watch out for overheating – heat can permanently demagnetize this magnet. As the temperature rises, the neodymium's power temporarily decreases. Do not use this magnet close to ovens higher than its working range. Exceeding the critical threshold will cause irreversible degradation of magnetism.
*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.35 kg / 11.79 pounds
4 377 Gs
0.80 kg / 1.77 pounds
802 g / 7.9 N
 N/A
1 mm 4.75 kg / 10.46 pounds
5 218 Gs
0.71 kg / 1.57 pounds
712 g / 7.0 N
 4.27 kg / 9.42 pounds
~0 Gs
2 mm 4.08 kg / 9.00 pounds
4 840 Gs
0.61 kg / 1.35 pounds
612 g / 6.0 N
 3.67 kg / 8.10 pounds
~0 Gs
3 mm 3.42 kg / 7.55 pounds
4 433 Gs
0.51 kg / 1.13 pounds
514 g / 5.0 N
 3.08 kg / 6.80 pounds
~0 Gs
5 mm 2.27 kg / 5.01 pounds
3 610 Gs
0.34 kg / 0.75 pounds
341 g / 3.3 N
 2.04 kg / 4.51 pounds
~0 Gs
10 mm 0.68 kg / 1.51 pounds
1 982 Gs
0.10 kg / 0.23 pounds
103 g / 1.0 N
 0.62 kg / 1.36 pounds
~0 Gs
20 mm 0.07 kg / 0.15 pounds
626 Gs
0.01 kg / 0.02 pounds
10 g / 0.1 N
 0.06 kg / 0.14 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
67 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
41 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
27 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
18 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
13 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
10 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums interact from a much further distance than a magnet and steel combination. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of operation. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Remember that when connecting a pair of magnets, the impact force is massive. The levitation is a bit weaker than the connection force, but still large.
*Field value between like poles drops to ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Estimates refer to shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MW 12x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Mobile device 40 Gs (4.0 mT) 2.5 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 electronics and pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the invisible magnetic field acts through matter and glass. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MW 12x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.61 km/h
(7.11 m/s)
 0.06 J
30 mm 25.78 km/h
(7.16 m/s)
 0.07 J
50 mm 25.79 km/h
(7.16 m/s)
 0.07 J
100 mm 25.79 km/h
(7.16 m/s)
 0.07 J
NdFeB products are prone to chipping – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or painful pinches to skin. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MW 12x3 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Pc)
MW 12x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 483 Mx 34.8 µWb
Pc Coefficient 0.35 Low (Flat)
Flux value passing through the magnet pole. Key data in coil applications as well as sensors. Pc value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 12x3 / N38

Environment Effective steel pull Effect
Air (land) 2.49 kg Standard
Water (riverbed) 2.85 kg
(+0.36 kg buoyancy gain)
+14.5%
Rust risk: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Caution: On a vertical surface, the magnet holds only a fraction of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Temperature resistance

*For N38 grade, the max working temp 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.

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%

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: 010018-2026
Magnet Unit Converter

Force (pull)

Magnetic Induction

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The presented product is an incredibly powerful cylindrical magnet, composed of advanced NdFeB material, which, with dimensions of Ø12x3 mm, guarantees optimal power. The MW 12x3 / N38 model boasts high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 2.49 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 24.43 N with a weight of only 2.54 g, this rod is indispensable in electronics and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability 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 even stronger magnets in the same volume (Ø12x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø12x3 mm, which, at a weight of 2.54 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 2.49 kg (force ~24.43 N), which, with such compact dimensions, proves the high grade 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 12 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.

Pros and cons of rare earth magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (according to research),
  • Magnets perfectly protect themselves against loss of magnetization caused by external fields,
  • The use of an refined coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Neodymium magnets achieve maximum magnetic induction on a their surface, which increases force concentration,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to versatility in designing and the ability to modify to complex applications,
  • Significant place in modern industrial fields – they find application in mass storage devices, motor assemblies, diagnostic systems, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which allows their use in compact constructions

Disadvantages

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in producing threads and complex shapes in magnets, we propose using cover - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Lifting parameters

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

The force parameter is a result of laboratory testing conducted under the following configuration:
  • on a plate made of mild steel, effectively closing the magnetic field
  • possessing a thickness of at least 10 mm to avoid saturation
  • with a surface cleaned and smooth
  • with zero gap (no coatings)
  • for force applied at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Magnet lifting force in use – key factors

Real force impacted by specific conditions, mainly (from most important):
  • Air gap (betwixt the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Direction of force – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be wasted to the other side.
  • Chemical composition of the base – mild steel attracts best. Alloy admixtures lower magnetic properties and holding force.
  • Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

H&S for magnets
Keep away from children

These products are not toys. Eating multiple magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates urgent medical intervention.

Serious injuries

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

Respect the power

Handle magnets with awareness. Their immense force can surprise even experienced users. Be vigilant and respect their force.

Compass and GPS

Navigation devices and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

Power loss in heat

Watch the temperature. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.

Cards and drives

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

Fragile material

NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets will cause them cracking into shards.

Dust is flammable

Fire warning: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

ICD Warning

Individuals with a pacemaker have to maintain an safe separation from magnets. The magnetic field can stop the operation of the implant.

Nickel coating and allergies

Studies show that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or opt for versions in plastic housing.

Attention! Details about hazards in the article: Safety of working with magnets.