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MW 50x20 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010080

GTIN/EAN: 5906301810797

Load capacity 70.10 kg / 687.66 N Magnetic Induction 387.23 mT / 3872 Gs
Diameter Ø
50 mm [±0,1 mm]
Height
20 mm [±0,1 mm]
Weight
294.52 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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86.96 zł net / pcs

106.96 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 details - MW 50x20 / N38 - cylindrical magnet

Specification / characteristics - MW 50x20 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010080
GTIN/EAN 5906301810797
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 50 mm [±0,1 mm]
Height 20 mm [±0,1 mm]
Weight 294.52 g
Magnetization Direction ↑ axial
Load capacity ~ ? 70.10 kg / 687.66 N
Magnetic Induction ~ ? 387.23 mT / 3872 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 50x20 / 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 - report

These information constitute the outcome of a physical calculation. Values were calculated on algorithms for the class Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs distance) - power drop
MW 50x20 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3872 Gs
387.2 mT
 70.10 kg / 154.54 pounds
70100.0 g / 687.7 N
 critical level
1 mm 3740 Gs
374.0 mT
 65.41 kg / 144.20 pounds
65408.0 g / 641.7 N
 critical level
2 mm 3601 Gs
360.1 mT
 60.65 kg / 133.72 pounds
60652.7 g / 595.0 N
 critical level
3 mm 3459 Gs
345.9 mT
 55.95 kg / 123.35 pounds
55950.5 g / 548.9 N
 critical level
5 mm 3168 Gs
316.8 mT
 46.94 kg / 103.47 pounds
46935.3 g / 460.4 N
 critical level
10 mm 2460 Gs
246.0 mT
 28.31 kg / 62.40 pounds
28306.3 g / 277.7 N
 critical level
15 mm 1855 Gs
185.5 mT
 16.10 kg / 35.48 pounds
16095.6 g / 157.9 N
 critical level
20 mm 1384 Gs
138.4 mT
 8.96 kg / 19.76 pounds
8963.2 g / 87.9 N
 strong
30 mm 782 Gs
78.2 mT
 2.86 kg / 6.31 pounds
2863.1 g / 28.1 N
 strong
50 mm 293 Gs
29.3 mT
 0.40 kg / 0.89 pounds
402.4 g / 3.9 N
 safe
Pulling power drops significantly with every mm of gap. Remember that even the smallest gap (e.g., dirt, varnish, rust) strongly reduces the pull force. Magnets work strongest during direct contact; gap kills the power. See how flashily the pull force drop, when the magnet does not touch tightly to the steel surface. When calculating the mounting, eliminate redundant distances.

Table 2: Sliding capacity (wall)
MW 50x20 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 14.02 kg / 30.91 pounds
14020.0 g / 137.5 N
1 mm Stal (~0.2) 13.08 kg / 28.84 pounds
13082.0 g / 128.3 N
2 mm Stal (~0.2) 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
3 mm Stal (~0.2) 11.19 kg / 24.67 pounds
11190.0 g / 109.8 N
5 mm Stal (~0.2) 9.39 kg / 20.70 pounds
9388.0 g / 92.1 N
10 mm Stal (~0.2) 5.66 kg / 12.48 pounds
5662.0 g / 55.5 N
15 mm Stal (~0.2) 3.22 kg / 7.10 pounds
3220.0 g / 31.6 N
20 mm Stal (~0.2) 1.79 kg / 3.95 pounds
1792.0 g / 17.6 N
30 mm Stal (~0.2) 0.57 kg / 1.26 pounds
572.0 g / 5.6 N
50 mm Stal (~0.2) 0.08 kg / 0.18 pounds
80.0 g / 0.8 N
The table below indicates the estimated force required to cause the sliding of the magnet down on a vertical metal surface (assuming typical friction). This parameter varies with the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 50x20 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
21.03 kg / 46.36 pounds
21030.0 g / 206.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
14.02 kg / 30.91 pounds
14020.0 g / 137.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
7.01 kg / 15.45 pounds
7010.0 g / 68.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
35.05 kg / 77.27 pounds
35050.0 g / 343.8 N
When hanging a magnet on a vertical plane (e.g., a car body), it you can count on just about 1/5 of its maximum pull force. Gravitational force and a low friction coefficient cause that magnets slide down faster than they pop off the substrate. Want to create a hanger? Note that the sliding force is much weaker than the maximum static pull force. On a painted metal, the magnet will slip down under a much lighter load. Using a rubber pad can significantly improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 50x20 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
3%
 2.34 kg / 5.15 pounds
2336.7 g / 22.9 N
1 mm
8%
 5.84 kg / 12.88 pounds
5841.7 g / 57.3 N
2 mm
17%
 11.68 kg / 25.76 pounds
11683.3 g / 114.6 N
3 mm
25%
 17.53 kg / 38.64 pounds
17525.0 g / 171.9 N
5 mm
42%
 29.21 kg / 64.39 pounds
29208.3 g / 286.5 N
10 mm
83%
 58.42 kg / 128.79 pounds
58416.7 g / 573.1 N
11 mm
92%
 64.26 kg / 141.67 pounds
64258.3 g / 630.4 N
12 mm
100%
 70.10 kg / 154.54 pounds
70100.0 g / 687.7 N
A thin metal plate cannot conduct the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To utilize full efficiency of this neodymium's power, you need a suitably thick element of steel. The material oversaturation causes that on thin elements (e.g., thin profiles), the product holds weaker. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (stability) - resistance threshold
MW 50x20 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 70.10 kg / 154.54 pounds
70100.0 g / 687.7 N
 OK
40 °C -2.2% 68.56 kg / 151.14 pounds
68557.8 g / 672.6 N
 OK
60 °C -4.4% 67.02 kg / 147.74 pounds
67015.6 g / 657.4 N
80 °C -6.6% 65.47 kg / 144.34 pounds
65473.4 g / 642.3 N
100 °C -28.8% 49.91 kg / 110.04 pounds
49911.2 g / 489.6 N
Standard neodymium magnets change their properties strength past the thermal threshold. Protect against heat – heat can permanently demagnetize this magnet. As the temperature rises, the neodymium's capacity momentarily decreases. Avoid using this magnet in hot environments higher than its safe range. Ignoring the limit will cause irreversible degradation of magnetism.
*Engineering note: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) may lose charge permanently sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 50x20 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 181.46 kg / 400.06 pounds
5 255 Gs
27.22 kg / 60.01 pounds
27220 g / 267.0 N
 N/A
1 mm 175.47 kg / 386.84 pounds
7 615 Gs
26.32 kg / 58.03 pounds
26321 g / 258.2 N
 157.92 kg / 348.16 pounds
~0 Gs
2 mm 169.32 kg / 373.28 pounds
7 480 Gs
25.40 kg / 55.99 pounds
25398 g / 249.2 N
 152.39 kg / 335.96 pounds
~0 Gs
3 mm 163.16 kg / 359.70 pounds
7 343 Gs
24.47 kg / 53.96 pounds
24474 g / 240.1 N
 146.84 kg / 323.73 pounds
~0 Gs
5 mm 150.90 kg / 332.67 pounds
7 061 Gs
22.63 kg / 49.90 pounds
22634 g / 222.0 N
 135.81 kg / 299.40 pounds
~0 Gs
10 mm 121.50 kg / 267.86 pounds
6 336 Gs
18.22 kg / 40.18 pounds
18225 g / 178.8 N
 109.35 kg / 241.07 pounds
~0 Gs
20 mm 73.28 kg / 161.54 pounds
4 921 Gs
10.99 kg / 24.23 pounds
10991 g / 107.8 N
 65.95 kg / 145.39 pounds
~0 Gs
50 mm 12.99 kg / 28.63 pounds
2 071 Gs
1.95 kg / 4.29 pounds
1948 g / 19.1 N
 11.69 kg / 25.76 pounds
~0 Gs
60 mm 7.41 kg / 16.34 pounds
1 565 Gs
1.11 kg / 2.45 pounds
1112 g / 10.9 N
 6.67 kg / 14.71 pounds
~0 Gs
70 mm 4.35 kg / 9.58 pounds
1 198 Gs
0.65 kg / 1.44 pounds
652 g / 6.4 N
 3.91 kg / 8.62 pounds
~0 Gs
80 mm 2.62 kg / 5.78 pounds
931 Gs
0.39 kg / 0.87 pounds
393 g / 3.9 N
 2.36 kg / 5.20 pounds
~0 Gs
90 mm 1.63 kg / 3.59 pounds
734 Gs
0.24 kg / 0.54 pounds
245 g / 2.4 N
 1.47 kg / 3.23 pounds
~0 Gs
100 mm 1.04 kg / 2.30 pounds
587 Gs
0.16 kg / 0.34 pounds
156 g / 1.5 N
 0.94 kg / 2.07 pounds
~0 Gs
Two magnetic products interact from a significantly greater distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a further horizon of operation. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Remember that when bringing together two magnets, the impact force is massive. The repulsion force is slightly lower than the connection force, but still large.
*The magnetic induction between like poles is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Note: Figures refer to friction force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MW 50x20 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 24.0 cm
Hearing aid 10 Gs (1.0 mT) 19.0 cm
Mechanical watch 20 Gs (2.0 mT) 15.0 cm
Mobile device 40 Gs (4.0 mT) 11.5 cm
Car key 50 Gs (5.0 mT) 10.5 cm
Payment card 400 Gs (40.0 mT) 4.5 cm
HDD hard drive 600 Gs (60.0 mT) 3.5 cm
A strong magnetic field is a large risk to electronics as well as medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and glass. Special caution must be taken by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MW 50x20 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 20.30 km/h
(5.64 m/s)
 4.68 J
30 mm 24.58 km/h
(6.83 m/s)
 6.87 J
50 mm 25.00 km/h
(6.95 m/s)
 7.10 J
100 mm 25.09 km/h
(6.97 m/s)
 7.15 J
Neodymium magnets are very brittle – a collision with steel risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 50x20 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 50x20 / N38

Parameter Value SI Unit / Description
Magnetic Flux 78 540 Mx 785.4 µWb
Pc Coefficient 0.50 Low (Flat)
Flux value emitted by the magnet pole. Essential parameter when building generators and motors. Pc value defines the working geometry.

Table 11: Physics of underwater searching
MW 50x20 / N38

Environment Effective steel pull Effect
Air (land) 70.10 kg Standard
Water (riverbed) 80.26 kg
(+10.16 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Warning: On a vertical wall, the magnet retains just ~20% of its nominal pull.

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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

Elemental analysis

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010080-2026
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This product is a very strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø50x20 mm, guarantees maximum efficiency. This specific item is characterized by 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. 70.10 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 687.66 N with a weight of only 294.52 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 50.1 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 high repeatability of the connection.
Magnets NdFeB grade N38 are strong enough 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 (Ø50x20), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 50 mm and height 20 mm. The value of 687.66 N means that the magnet is capable of holding a weight many times exceeding its own mass of 294.52 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 20 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • They retain attractive force for almost ten years – the drop is just ~1% (in theory),
  • They show high resistance to demagnetization induced by external magnetic fields,
  • By applying a smooth layer of gold, the element presents an aesthetic look,
  • Magnets are characterized by excellent magnetic induction on the outer side,
  • 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...
  • Possibility of precise forming and modifying to concrete applications,
  • Key role in future technologies – they serve a role in magnetic memories, electromotive mechanisms, precision medical tools, as well as industrial machines.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their strength 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 durability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of producing threads in the magnet and complicated shapes - preferred is cover - magnet mounting.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Best holding force of the magnet in ideal parameters – what affects it?

The specified lifting capacity represents the limit force, recorded under laboratory conditions, specifically:
  • on a block made of structural steel, optimally conducting the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • with an ideally smooth touching surface
  • with total lack of distance (no paint)
  • during pulling in a direction perpendicular to the mounting surface
  • in stable room temperature

Lifting capacity in real conditions – factors

During everyday use, the real power is determined by a number of factors, presented from crucial:
  • Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Plate material – mild steel attracts best. Higher carbon content lower magnetic permeability and lifting capacity.
  • Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate reduces the holding force.

H&S for magnets
Danger to the youngest

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are life-threatening.

Data carriers

Device Safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Conscious usage

Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can react.

Allergy Warning

A percentage of the population suffer from a hypersensitivity to nickel, which is the common plating for neodymium magnets. Frequent touching can result in an allergic reaction. We suggest wear safety gloves.

Serious injuries

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Power loss in heat

Control the heat. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.

Do not drill into magnets

Dust created during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Material brittleness

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets leads to them shattering into small pieces.

Phone sensors

GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

ICD Warning

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Important! Learn more about hazards in the article: Safety of working with magnets.