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MPL 40x40x15 / N38 - lamellar magnet

lamellar magnet

Catalog no 020161

GTIN/EAN: 5906301811671

5.00
Load capacity 46.94 kg / 460.51 N Magnetic Induction 345.80 mT / 3458 Gs
length
40 mm [±0,1 mm]
Width
40 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
180 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

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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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Physical properties - MPL 40x40x15 / N38 - lamellar magnet

Specification / characteristics - MPL 40x40x15 / N38 - lamellar magnet

properties
properties values
Cat. no. 020161
GTIN/EAN 5906301811671
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 40 mm [±0,1 mm]
Width 40 mm [±0,1 mm]
Height 15 mm [±0,1 mm]
Weight 180 g
Magnetization Direction ↑ axial
Load capacity ~ ? 46.94 kg / 460.51 N
Magnetic Induction ~ ? 345.80 mT / 3458 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x40x15 / N38 - lamellar 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 assembly - technical parameters

Presented information constitute the direct effect of a physical simulation. Values are based on models for the class Nd2Fe14B. Actual parameters might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x40x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3458 Gs
345.8 mT
 46.94 kg / 103.48 LBS
46940.0 g / 460.5 N
 dangerous!
1 mm 3333 Gs
333.3 mT
 43.62 kg / 96.16 LBS
43616.1 g / 427.9 N
 dangerous!
2 mm 3199 Gs
319.9 mT
 40.19 kg / 88.60 LBS
40189.1 g / 394.3 N
 dangerous!
3 mm 3060 Gs
306.0 mT
 36.77 kg / 81.06 LBS
36767.3 g / 360.7 N
 dangerous!
5 mm 2773 Gs
277.3 mT
 30.19 kg / 66.55 LBS
30187.9 g / 296.1 N
 dangerous!
10 mm 2078 Gs
207.8 mT
 16.95 kg / 37.37 LBS
16950.2 g / 166.3 N
 dangerous!
15 mm 1507 Gs
150.7 mT
 8.91 kg / 19.65 LBS
8913.7 g / 87.4 N
 medium risk
20 mm 1085 Gs
108.5 mT
 4.62 kg / 10.19 LBS
4622.3 g / 45.3 N
 medium risk
30 mm 580 Gs
58.0 mT
 1.32 kg / 2.92 LBS
1322.9 g / 13.0 N
 safe
50 mm 204 Gs
20.4 mT
 0.16 kg / 0.36 LBS
164.0 g / 1.6 N
 safe
Grip strength weakens significantly with every mm of gap. Note that even the smallest gap (e.g., dirt, varnish, dust) significantly weakens the grip. Magnetic products hold most effectively at the point of direct contact; distance weakens the power. Notice how rapidly the pull force plummet, when the magnet does not touch directly to the metal substrate. When planning the mounting, avoid unnecessary gaps.

Table 2: Slippage load (wall)
MPL 40x40x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 9.39 kg / 20.70 LBS
9388.0 g / 92.1 N
1 mm Stal (~0.2) 8.72 kg / 19.23 LBS
8724.0 g / 85.6 N
2 mm Stal (~0.2) 8.04 kg / 17.72 LBS
8038.0 g / 78.9 N
3 mm Stal (~0.2) 7.35 kg / 16.21 LBS
7354.0 g / 72.1 N
5 mm Stal (~0.2) 6.04 kg / 13.31 LBS
6038.0 g / 59.2 N
10 mm Stal (~0.2) 3.39 kg / 7.47 LBS
3390.0 g / 33.3 N
15 mm Stal (~0.2) 1.78 kg / 3.93 LBS
1782.0 g / 17.5 N
20 mm Stal (~0.2) 0.92 kg / 2.04 LBS
924.0 g / 9.1 N
30 mm Stal (~0.2) 0.26 kg / 0.58 LBS
264.0 g / 2.6 N
50 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
The table below defines the approximate shear load sufficient to initiate the downward movement of the magnet down on a vertical metal surface (assuming typical friction). This value is a function of the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x40x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
14.08 kg / 31.05 LBS
14082.0 g / 138.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
9.39 kg / 20.70 LBS
9388.0 g / 92.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
4.69 kg / 10.35 LBS
4694.0 g / 46.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
23.47 kg / 51.74 LBS
23470.0 g / 230.2 N
When mounting a holder on a vertical wall (e.g., a car body), it you can count on barely about 1/5 of its nominal power. Gravitational force and a weak degree of grip mean that products slip faster than they detach. Planning a vertical fastening? Consider that the shear force is much weaker than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a much lighter load. Using a rubber coating can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x40x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 2.35 kg / 5.17 LBS
2347.0 g / 23.0 N
1 mm
13%
 5.87 kg / 12.94 LBS
5867.5 g / 57.6 N
2 mm
25%
 11.74 kg / 25.87 LBS
11735.0 g / 115.1 N
3 mm
38%
 17.60 kg / 38.81 LBS
17602.5 g / 172.7 N
5 mm
63%
 29.34 kg / 64.68 LBS
29337.5 g / 287.8 N
10 mm
100%
 46.94 kg / 103.48 LBS
46940.0 g / 460.5 N
11 mm
100%
 46.94 kg / 103.48 LBS
46940.0 g / 460.5 N
12 mm
100%
 46.94 kg / 103.48 LBS
46940.0 g / 460.5 N
A thin sheet cannot focus the full magnetic flux, which wastes potential of the magnet. If you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To achieve the maximum of this magnet's power, you require a sufficiently solid element of steel. The saturation phenomenon causes that on thin elements (e.g., thin profiles), the product holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Working in heat (material behavior) - power drop
MPL 40x40x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 46.94 kg / 103.48 LBS
46940.0 g / 460.5 N
 OK
40 °C -2.2% 45.91 kg / 101.21 LBS
45907.3 g / 450.4 N
 OK
60 °C -4.4% 44.87 kg / 98.93 LBS
44874.6 g / 440.2 N
80 °C -6.6% 43.84 kg / 96.65 LBS
43842.0 g / 430.1 N
100 °C -28.8% 33.42 kg / 73.68 LBS
33421.3 g / 327.9 N
Ordinary NdFeB products change their properties strength above the temperature limit. Protect against heat – heat can irreversibly damage this magnet. As the temperature rises, the neodymium's capacity briefly lowers. Avoid using this magnet near heat sources exceeding its operating temperature limit. Too high temperature will lead to destruction of magnetic properties.
*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 40x40x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 117.92 kg / 259.97 LBS
4 963 Gs
17.69 kg / 39.00 LBS
17688 g / 173.5 N
 N/A
1 mm 113.82 kg / 250.94 LBS
6 794 Gs
17.07 kg / 37.64 LBS
17074 g / 167.5 N
 102.44 kg / 225.84 LBS
~0 Gs
2 mm 109.57 kg / 241.57 LBS
6 666 Gs
16.44 kg / 36.23 LBS
16436 g / 161.2 N
 98.62 kg / 217.41 LBS
~0 Gs
3 mm 105.28 kg / 232.10 LBS
6 534 Gs
15.79 kg / 34.81 LBS
15792 g / 154.9 N
 94.75 kg / 208.89 LBS
~0 Gs
5 mm 96.65 kg / 213.08 LBS
6 261 Gs
14.50 kg / 31.96 LBS
14498 g / 142.2 N
 86.99 kg / 191.77 LBS
~0 Gs
10 mm 75.84 kg / 167.19 LBS
5 546 Gs
11.38 kg / 25.08 LBS
11376 g / 111.6 N
 68.25 kg / 150.47 LBS
~0 Gs
20 mm 42.58 kg / 93.88 LBS
4 155 Gs
6.39 kg / 14.08 LBS
6387 g / 62.7 N
 38.32 kg / 84.49 LBS
~0 Gs
50 mm 6.12 kg / 13.49 LBS
1 575 Gs
0.92 kg / 2.02 LBS
918 g / 9.0 N
 5.51 kg / 12.14 LBS
~0 Gs
60 mm 3.32 kg / 7.33 LBS
1 161 Gs
0.50 kg / 1.10 LBS
499 g / 4.9 N
 2.99 kg / 6.59 LBS
~0 Gs
70 mm 1.87 kg / 4.12 LBS
871 Gs
0.28 kg / 0.62 LBS
281 g / 2.8 N
 1.68 kg / 3.71 LBS
~0 Gs
80 mm 1.09 kg / 2.41 LBS
665 Gs
0.16 kg / 0.36 LBS
164 g / 1.6 N
 0.98 kg / 2.17 LBS
~0 Gs
90 mm 0.66 kg / 1.46 LBS
517 Gs
0.10 kg / 0.22 LBS
99 g / 1.0 N
 0.59 kg / 1.31 LBS
~0 Gs
100 mm 0.41 kg / 0.91 LBS
409 Gs
0.06 kg / 0.14 LBS
62 g / 0.6 N
 0.37 kg / 0.82 LBS
~0 Gs
Two magnetic products attract each other from a much further distance than a magnet and sheet combination. Such a system of magnet-to-magnet generates a stronger field and a wider radius of action. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is slightly lower than the attraction, but still impressive.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Important: Results demonstrate friction force of two identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 40x40x15 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 20.5 cm
Hearing aid 10 Gs (1.0 mT) 16.0 cm
Mechanical watch 20 Gs (2.0 mT) 12.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 10.0 cm
Car key 50 Gs (5.0 mT) 9.0 cm
Payment card 400 Gs (40.0 mT) 4.0 cm
HDD hard drive 600 Gs (60.0 mT) 3.0 cm
Extremely neodym field is a real danger to IT equipment as well as medical implants. These NdFeB products produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation penetrates the body and glass. Increased vigilance must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MPL 40x40x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 20.87 km/h
(5.80 m/s)
 3.02 J
30 mm 24.64 km/h
(6.84 m/s)
 4.22 J
50 mm 24.94 km/h
(6.93 m/s)
 4.32 J
100 mm 25.00 km/h
(6.94 m/s)
 4.34 J
Neodymium magnets are delicate – a strong collision with metal causes immediate chipping. Control the attraction moment – a neodymium left loose turns into a projectile. Kinetic force can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when handling with large magnets.

Table 9: Coating parameters (durability)
MPL 40x40x15 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MPL 40x40x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 58 107 Mx 581.1 µWb
Pc Coefficient 0.43 Low (Flat)
Total magnetic flux passing through the pole surface. Essential parameter in coil applications and motors. The Pc coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 40x40x15 / N38

Environment Effective steel pull Effect
Air (land) 46.94 kg Standard
Water (riverbed) 53.75 kg
(+6.81 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!
The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains merely a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.43

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 specification and ecology

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%

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: 020161-2026
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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x40x15 mm and a weight of 180 g, guarantees the highest quality connection. This magnetic block with a force of 460.51 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 46.94 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 40x40x15 / 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. 46.94 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 40x40x15 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (40x40 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 40x40x15 mm, which, at a weight of 180 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 46.94 kg (force ~460.51 N), which, with such a compact shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of rare earth magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose magnetism, even over around 10 years – the reduction in strength is only ~1% (theoretically),
  • Magnets effectively protect themselves against loss of magnetization caused by external fields,
  • The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to present itself better,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • In view of the option of flexible shaping and adaptation to individualized requirements, neodymium magnets can be created in a broad palette of shapes and sizes, which makes them more universal,
  • Wide application in innovative solutions – they are used in hard drives, electric drive systems, diagnostic systems, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in miniature devices

Weaknesses

Drawbacks and weaknesses of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small elements of these products are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

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

Breakaway force was determined for optimal configuration, assuming:
  • with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
  • whose transverse dimension equals approx. 10 mm
  • characterized by lack of roughness
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Bear in mind that the application force will differ depending on the following factors, in order of importance:
  • Distance (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
  • Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets
Fire warning

Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.

Cards and drives

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

Compass and GPS

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

Do not underestimate power

Be careful. Neodymium magnets act from a long distance and snap with huge force, often faster than you can react.

Physical harm

Large magnets can smash fingers instantly. Never place your hand betwixt two attracting surfaces.

Heat sensitivity

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

Avoid contact if allergic

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, cease handling magnets and use protective gear.

Beware of splinters

Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Implant safety

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

Product not for children

Always store magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are very dangerous.

Caution! More info about hazards in the article: Safety of working with magnets.