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MPL 40x18x10 SH / N38 - lamellar magnet

lamellar magnet

Catalog no 020157

GTIN/EAN: 5906301811633

5.00
Load capacity 23.81 kg / 233.58 N Magnetic Induction 366.66 mT / 3667 Gs
length
40 mm [±0,1 mm]
Width
18 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
54 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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29.50 zł net / 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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Detailed specification - MPL 40x18x10 SH / N38 - lamellar magnet

Specification / characteristics - MPL 40x18x10 SH / N38 - lamellar magnet

properties
properties values
Cat. no. 020157
GTIN/EAN 5906301811633
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 18 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 54 g
Magnetization Direction ↑ axial
Load capacity ~ ? 23.81 kg / 233.58 N
Magnetic Induction ~ ? 366.66 mT / 3667 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x18x10 SH / 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 simulation of the assembly - technical parameters

The following data represent the direct effect of a engineering calculation. Results were calculated on algorithms for the class Nd2Fe14B. Operational parameters might slightly deviate from the simulation results. Use these calculations as a reference point for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
MPL 40x18x10 SH / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3666 Gs
366.6 mT
 23.81 kg / 52.49 LBS
23810.0 g / 233.6 N
 dangerous!
1 mm 3399 Gs
339.9 mT
 20.48 kg / 45.14 LBS
20476.1 g / 200.9 N
 dangerous!
2 mm 3120 Gs
312.0 mT
 17.25 kg / 38.02 LBS
17245.9 g / 169.2 N
 dangerous!
3 mm 2841 Gs
284.1 mT
 14.30 kg / 31.54 LBS
14304.1 g / 140.3 N
 dangerous!
5 mm 2321 Gs
232.1 mT
 9.55 kg / 21.05 LBS
9547.8 g / 93.7 N
 medium risk
10 mm 1370 Gs
137.0 mT
 3.32 kg / 7.33 LBS
3324.4 g / 32.6 N
 medium risk
15 mm 833 Gs
83.3 mT
 1.23 kg / 2.71 LBS
1229.0 g / 12.1 N
 weak grip
20 mm 530 Gs
53.0 mT
 0.50 kg / 1.10 LBS
498.1 g / 4.9 N
 weak grip
30 mm 244 Gs
24.4 mT
 0.11 kg / 0.23 LBS
105.3 g / 1.0 N
 weak grip
50 mm 75 Gs
7.5 mT
 0.01 kg / 0.02 LBS
9.9 g / 0.1 N
 weak grip
Pulling power drops significantly with every mm of gap. Remember that even a microscopic distance (e.g., dirt, varnish, dust) significantly weakens the grip. Magnetic products hold strongest at the point of direct contact; distance drastically cuts the force. Observe how flashily the load capacity drop, when the product does not touch flatly to the metal substrate. When calculating the arrangement, eliminate redundant distances.

Table 2: Slippage load (vertical surface)
MPL 40x18x10 SH / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 4.76 kg / 10.50 LBS
4762.0 g / 46.7 N
1 mm Stal (~0.2) 4.10 kg / 9.03 LBS
4096.0 g / 40.2 N
2 mm Stal (~0.2) 3.45 kg / 7.61 LBS
3450.0 g / 33.8 N
3 mm Stal (~0.2) 2.86 kg / 6.31 LBS
2860.0 g / 28.1 N
5 mm Stal (~0.2) 1.91 kg / 4.21 LBS
1910.0 g / 18.7 N
10 mm Stal (~0.2) 0.66 kg / 1.46 LBS
664.0 g / 6.5 N
15 mm Stal (~0.2) 0.25 kg / 0.54 LBS
246.0 g / 2.4 N
20 mm Stal (~0.2) 0.10 kg / 0.22 LBS
100.0 g / 1.0 N
30 mm Stal (~0.2) 0.02 kg / 0.05 LBS
22.0 g / 0.2 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
This section shows the estimated force sufficient to cause the sliding of the magnet down on a upright metal surface (assuming standard friction coefficient). The holding force depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x18x10 SH / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
7.14 kg / 15.75 LBS
7143.0 g / 70.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.76 kg / 10.50 LBS
4762.0 g / 46.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.38 kg / 5.25 LBS
2381.0 g / 23.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
11.91 kg / 26.25 LBS
11905.0 g / 116.8 N
When mounting a magnet on a upright wall (e.g., a fridge), it you can count on just about 1/5 of nominal attraction strength. Gravity and a weak degree of grip cause that magnets slip faster than they pop off the substrate. Designing a vertical fastening? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slide down under a significantly smaller weight. Application of an anti-slip pad can effectively improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x18x10 SH / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 1.19 kg / 2.62 LBS
1190.5 g / 11.7 N
1 mm
13%
 2.98 kg / 6.56 LBS
2976.3 g / 29.2 N
2 mm
25%
 5.95 kg / 13.12 LBS
5952.5 g / 58.4 N
3 mm
38%
 8.93 kg / 19.68 LBS
8928.7 g / 87.6 N
5 mm
63%
 14.88 kg / 32.81 LBS
14881.3 g / 146.0 N
10 mm
100%
 23.81 kg / 52.49 LBS
23810.0 g / 233.6 N
11 mm
100%
 23.81 kg / 52.49 LBS
23810.0 g / 233.6 N
12 mm
100%
 23.81 kg / 52.49 LBS
23810.0 g / 233.6 N
A thin metal plate cannot focus the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a too thin substrate, the magnetism will pass 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 metal. The saturation effect means that on delicate walls (e.g., thin profiles), the magnet holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x18x10 SH / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 23.81 kg / 52.49 LBS
23810.0 g / 233.6 N
 OK
40 °C -2.2% 23.29 kg / 51.34 LBS
23286.2 g / 228.4 N
 OK
60 °C -4.4% 22.76 kg / 50.18 LBS
22762.4 g / 223.3 N
80 °C -6.6% 22.24 kg / 49.03 LBS
22238.5 g / 218.2 N
100 °C -28.8% 16.95 kg / 37.37 LBS
16952.7 g / 166.3 N
Standard neodymium magnets lose strength past the thermal threshold. Watch out for overheating – heat can irreversibly demagnetize this product. With increasing heat, the neodymium's capacity briefly drops. Do not use this product close to ovens higher than its working range. Too high temperature will lead to irreversible degradation of magnetic properties.
*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low Pc) may lose charge permanently sooner than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MPL 40x18x10 SH / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 59.64 kg / 131.49 LBS
5 034 Gs
8.95 kg / 19.72 LBS
8947 g / 87.8 N
 N/A
1 mm 55.50 kg / 122.35 LBS
7 072 Gs
8.32 kg / 18.35 LBS
8325 g / 81.7 N
 49.95 kg / 110.12 LBS
~0 Gs
2 mm 51.29 kg / 113.08 LBS
6 799 Gs
7.69 kg / 16.96 LBS
7694 g / 75.5 N
 46.16 kg / 101.77 LBS
~0 Gs
3 mm 47.18 kg / 104.01 LBS
6 520 Gs
7.08 kg / 15.60 LBS
7076 g / 69.4 N
 42.46 kg / 93.61 LBS
~0 Gs
5 mm 39.41 kg / 86.88 LBS
5 959 Gs
5.91 kg / 13.03 LBS
5912 g / 58.0 N
 35.47 kg / 78.20 LBS
~0 Gs
10 mm 23.92 kg / 52.73 LBS
4 643 Gs
3.59 kg / 7.91 LBS
3588 g / 35.2 N
 21.53 kg / 47.46 LBS
~0 Gs
20 mm 8.33 kg / 18.36 LBS
2 739 Gs
1.25 kg / 2.75 LBS
1249 g / 12.3 N
 7.49 kg / 16.52 LBS
~0 Gs
50 mm 0.55 kg / 1.22 LBS
705 Gs
0.08 kg / 0.18 LBS
83 g / 0.8 N
 0.50 kg / 1.09 LBS
~0 Gs
60 mm 0.26 kg / 0.58 LBS
487 Gs
0.04 kg / 0.09 LBS
40 g / 0.4 N
 0.24 kg / 0.52 LBS
~0 Gs
70 mm 0.13 kg / 0.30 LBS
348 Gs
0.02 kg / 0.04 LBS
20 g / 0.2 N
 0.12 kg / 0.27 LBS
~0 Gs
80 mm 0.07 kg / 0.16 LBS
256 Gs
0.01 kg / 0.02 LBS
11 g / 0.1 N
 0.07 kg / 0.14 LBS
~0 Gs
90 mm 0.04 kg / 0.09 LBS
194 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
 0.04 kg / 0.08 LBS
~0 Gs
100 mm 0.02 kg / 0.05 LBS
149 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
 0.02 kg / 0.05 LBS
~0 Gs
Two magnetic products interact from a much further distance than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a wider radius of operation. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the impact force is extreme. The levitation is slightly lower than the connection force, but still significant.
*Field value in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
* Results show friction force of two matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 40x18x10 SH / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 14.0 cm
Hearing aid 10 Gs (1.0 mT) 11.0 cm
Mechanical watch 20 Gs (2.0 mT) 8.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 6.5 cm
Remote 50 Gs (5.0 mT) 6.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
A strong magnetic field is a real danger to IT equipment as well as medical implants. These neodymiums generate a flux that prevents correct functioning of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MPL 40x18x10 SH / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.75 km/h
(6.32 m/s)
 1.08 J
30 mm 24.44 km/h
(6.79 m/s)
 1.24 J
50 mm 24.51 km/h
(6.81 m/s)
 1.25 J
100 mm 24.52 km/h
(6.81 m/s)
 1.25 J
Magnetic elements are prone to chipping – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can cause material chips or injury to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when working with large magnets.

Table 9: Anti-corrosion coating durability
MPL 40x18x10 SH / 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: Construction data (Flux)
MPL 40x18x10 SH / N38

Parameter Value SI Unit / Description
Magnetic Flux 26 060 Mx 260.6 µWb
Pc Coefficient 0.43 Low (Flat)
Flux value emitted by the magnet pole. Key data when building generators as well as sensors. Pc value determines the working geometry.

Table 11: Physics of underwater searching
MPL 40x18x10 SH / N38

Environment Effective steel pull Effect
Air (land) 23.81 kg Standard
Water (riverbed) 27.26 kg
(+3.45 kg buoyancy gain)
+14.5%
Warning: 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. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Caution: On a vertical wall, the magnet holds just approx. 20-30% of its max power.

2. Efficiency vs thickness

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

3. Heat tolerance

*For standard magnets, the critical limit is 80°C.

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

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

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 specification and ecology

Material specification

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: 020157-2026
Magnet Unit Converter

Magnet pull force

Magnetic Induction

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x18x10 mm and a weight of 54 g, guarantees the highest quality connection. As a block magnet with high power (approx. 23.81 kg), this product is available immediately from our warehouse in Poland. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
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 23.81 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.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 23.81 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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 (40x18 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 40 mm (length), 18 mm (width), and 10 mm (thickness). It is a magnetic block with dimensions 40x18x10 mm and a self-weight of 54 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Besides their remarkable strength, neodymium magnets offer the following advantages:
  • They retain magnetic properties for almost ten years – the drop is just ~1% (in theory),
  • Neodymium magnets are characterized by extremely resistant to magnetic field loss caused by magnetic disturbances,
  • By applying a shiny layer of gold, the element presents an aesthetic look,
  • Magnets are characterized by very high magnetic induction on the surface,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
  • Due to the potential of free shaping and adaptation to custom needs, neodymium magnets can be manufactured in a wide range of shapes and sizes, which increases their versatility,
  • Fundamental importance in modern technologies – they are utilized in hard drives, electric drive systems, medical devices, and modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Limited ability of creating nuts in the magnet and complicated forms - recommended is casing - mounting mechanism.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Maximum lifting capacity of the magnet – what it depends on?

The load parameter shown refers to the peak performance, obtained under laboratory conditions, specifically:
  • with the application of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with an ground contact surface
  • with total lack of distance (without impurities)
  • during pulling in a direction vertical to the plane
  • in neutral thermal conditions

Magnet lifting force in use – key factors

Real force impacted by working environment parameters, including (from most important):
  • Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – mild steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
  • Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets
Keep away from electronics

Note: neodymium magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, tablet, and GPS.

Danger to the youngest

Neodymium magnets are not toys. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and necessitates urgent medical intervention.

Dust explosion hazard

Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.

Safe operation

Exercise caution. Rare earth magnets attract from a long distance and connect with huge force, often quicker than you can react.

Nickel coating and allergies

It is widely known that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid direct skin contact or select coated magnets.

Medical implants

People with a pacemaker have to keep an safe separation from magnets. The magnetism can disrupt the operation of the implant.

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Protect data

Do not bring magnets close to a purse, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Finger safety

Big blocks can crush fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.

Heat warning

Keep cool. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Caution! Learn more about risks in the article: Magnet Safety Guide.