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MPL 5x5x1.5 / N38 - lamellar magnet

lamellar magnet

Catalog no 020172

GTIN/EAN: 5906301811787

5.00
Load capacity 0.58 kg / 5.68 N Magnetic Induction 293.49 mT / 2935 Gs
length
5 mm [±0,1 mm]
Width
5 mm [±0,1 mm]
Height
1.5 mm [±0,1 mm]
Weight
0.28 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view technical specifications »

0.1500 zł net / pcs

0.1845 zł with VAT (23% VAT) / pcs

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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

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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Product card - MPL 5x5x1.5 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x1.5 / N38 - lamellar magnet

properties
properties values
Cat. no. 020172
GTIN/EAN 5906301811787
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 5 mm [±0,1 mm]
Width 5 mm [±0,1 mm]
Height 1.5 mm [±0,1 mm]
Weight 0.28 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.58 kg / 5.68 N
Magnetic Induction ~ ? 293.49 mT / 2935 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1.5 / N38 - lamellar 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

Engineering analysis of the magnet - report

The following values represent the result of a engineering analysis. Values rely on models for the class Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Treat these data as a reference point for designers.

Table 1: Static force (force vs distance) - power drop
MPL 5x5x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2932 Gs
293.2 mT
 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
 safe
1 mm 2036 Gs
203.6 mT
 0.28 kg / 0.62 pounds
279.6 g / 2.7 N
 safe
2 mm 1228 Gs
122.8 mT
 0.10 kg / 0.22 pounds
101.7 g / 1.0 N
 safe
3 mm 727 Gs
72.7 mT
 0.04 kg / 0.08 pounds
35.7 g / 0.3 N
 safe
5 mm 285 Gs
28.5 mT
 0.01 kg / 0.01 pounds
5.5 g / 0.1 N
 safe
10 mm 54 Gs
5.4 mT
 0.00 kg / 0.00 pounds
0.2 g / 0.0 N
 safe
15 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
20 mm 8 Gs
0.8 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
30 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Grip strength decreases significantly with every mm of distance. Remember that even a very thin break (e.g., contamination, varnish, rust) noticeably reduces the pull force. Magnetic products hold most effectively in perfect adhesion; distance weakens the power. Observe how quickly the pull force plummet, when the magnet does not touch flatly to the steel surface. When calculating the assembly, eliminate additional spacers.

Table 2: Vertical hold (wall)
MPL 5x5x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.12 kg / 0.26 pounds
116.0 g / 1.1 N
1 mm Stal (~0.2) 0.06 kg / 0.12 pounds
56.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 pounds
20.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.02 pounds
8.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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 following data calculates the approximate holding capacity needed to initiate the shifting of the magnet vertically along a upright metal surface (considering standard friction coefficient). The holding force depends on the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 5x5x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.12 kg / 0.26 pounds
116.0 g / 1.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.06 kg / 0.13 pounds
58.0 g / 0.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.29 kg / 0.64 pounds
290.0 g / 2.8 N
When mounting a magnet on a upright surface (e.g., a car body), it you can count on just about 1/5 of its maximum pull force. Gravity and a low friction coefficient cause that magnets slide down faster than they detach. Want to create a hanger? Consider that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller load. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 5x5x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.06 kg / 0.13 pounds
58.0 g / 0.6 N
1 mm
25%
 0.15 kg / 0.32 pounds
145.0 g / 1.4 N
2 mm
50%
 0.29 kg / 0.64 pounds
290.0 g / 2.8 N
3 mm
75%
 0.43 kg / 0.96 pounds
435.0 g / 4.3 N
5 mm
100%
 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
10 mm
100%
 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
11 mm
100%
 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
12 mm
100%
 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
A thin metal plate is not enough to focus the entire magnetic field, which weakens actual performance of the holder. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this magnet's potential, you need a suitably thick element of steel. The material oversaturation means that on delicate walls (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (material behavior) - power drop
MPL 5x5x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
 OK
40 °C -2.2% 0.57 kg / 1.25 pounds
567.2 g / 5.6 N
 OK
60 °C -4.4% 0.55 kg / 1.22 pounds
554.5 g / 5.4 N
80 °C -6.6% 0.54 kg / 1.19 pounds
541.7 g / 5.3 N
100 °C -28.8% 0.41 kg / 0.91 pounds
413.0 g / 4.1 N
Classic neodymiums irreversibly lose power above the temperature limit. Protect against heat – high temperature can permanently destroy this magnet. With every degree above norm, the neodymium's power briefly lowers. Avoid using this magnet close to ovens exceeding its working range. Exceeding the critical threshold will lead to permanent loss of magnetism.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low Pc) risk losing magnetic properties at lower temperatures than taller cylinders. Red status in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field collision
MPL 5x5x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.33 kg / 2.92 pounds
4 518 Gs
0.20 kg / 0.44 pounds
199 g / 1.9 N
 N/A
1 mm 0.97 kg / 2.15 pounds
5 027 Gs
0.15 kg / 0.32 pounds
146 g / 1.4 N
 0.88 kg / 1.93 pounds
~0 Gs
2 mm 0.64 kg / 1.41 pounds
4 071 Gs
0.10 kg / 0.21 pounds
96 g / 0.9 N
 0.57 kg / 1.27 pounds
~0 Gs
3 mm 0.39 kg / 0.86 pounds
3 188 Gs
0.06 kg / 0.13 pounds
59 g / 0.6 N
 0.35 kg / 0.78 pounds
~0 Gs
5 mm 0.14 kg / 0.30 pounds
1 886 Gs
0.02 kg / 0.05 pounds
21 g / 0.2 N
 0.12 kg / 0.27 pounds
~0 Gs
10 mm 0.01 kg / 0.03 pounds
569 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.02 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
108 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
9 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
5 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
3 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
2 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
2 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
1 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets attract each other from a much further distance than a magnet and sheet setup. Such a system of two magnets produces a massive flux and a wider radius of performance. Designing a powerful holder? Apply two magnets instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the collision energy is huge. The levitation is marginally weaker than the attraction, but still large.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Figures demonstrate friction force of two same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MPL 5x5x1.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Timepiece 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Powerful magnet radiation poses a real danger to IT equipment as well as pacemakers. These neodymiums produce a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field acts through matter and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MPL 5x5x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.39 km/h
(7.05 m/s)
 0.01 J
30 mm 25.39 km/h
(7.05 m/s)
 0.01 J
50 mm 25.37 km/h
(7.05 m/s)
 0.01 J
100 mm 25.40 km/h
(7.05 m/s)
 0.01 J
NdFeB products are prone to chipping – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Kinetic force can destroy the magnet or painful pinches to fingers. Always hold the magnet during installation so it doesn't slam with momentum 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
MPL 5x5x1.5 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MPL 5x5x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 799 Mx 8.0 µWb
Pc Coefficient 0.36 Low (Flat)
Total magnetic flux passing through the pole surface. Key data for generator designers as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Physics of underwater searching
MPL 5x5x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.58 kg Standard
Water (riverbed) 0.66 kg
(+0.08 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

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

2. Steel saturation

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

3. Power loss vs temp

*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) = 0.36

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.

Technical and environmental data

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: 020172-2026
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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 5x5x1.5 mm and a weight of 0.28 g, guarantees the highest quality connection. As a block magnet with high power (approx. 0.58 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 0.58 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 5x5x1.5 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 0.58 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 5x5x1.5 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 5x5x1.5 mm, which, at a weight of 0.28 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 0.58 kg (force ~5.68 N), which, with such a flat shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Strengths and weaknesses of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their power is durable, and after approximately ten years it drops only by ~1% (theoretically),
  • Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by external interference,
  • Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an clean appearance,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Considering the ability of free shaping and customization to individualized requirements, NdFeB magnets can be created in a variety of forms and dimensions, which amplifies use scope,
  • Fundamental importance in high-tech industry – they are commonly used in hard drives, drive modules, advanced medical instruments, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions

Weaknesses

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets start to 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.
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using a housing - magnetic holder.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these products can complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Lifting parameters

Maximum magnetic pulling force – what affects it?

Breakaway force was defined for ideal contact conditions, taking into account:
  • on a plate made of mild steel, effectively closing the magnetic field
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with an ground touching surface
  • under conditions of no distance (surface-to-surface)
  • during pulling in a direction perpendicular to the mounting surface
  • in stable room temperature

Magnet lifting force in use – key factors

During everyday use, the actual holding force results from many variables, listed from the most important:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel gives the best results. Alloy steels lower magnetic properties and holding force.
  • Smoothness – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate lowers the load capacity.

Warnings
Danger to the youngest

Adult use only. Tiny parts pose a choking risk, leading to serious injuries. Store away from kids and pets.

Fire risk

Machining of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Pinching danger

Risk of injury: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Keep away from computers

Avoid bringing magnets close to a wallet, computer, or TV. The magnetic field can permanently damage these devices and erase data from cards.

GPS and phone interference

Note: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your mobile, device, and navigation systems.

Avoid contact if allergic

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If you have an allergy, refrain from touching magnets with bare hands and opt for encased magnets.

Beware of splinters

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.

Demagnetization risk

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

ICD Warning

People with a ICD should keep an large gap from magnets. The magnetic field can interfere with the operation of the implant.

Respect the power

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Security! Details about hazards in the article: Magnet Safety Guide.