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MPL 30x15x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020389

GTIN/EAN: 5906301811886

5.00
Load capacity 16.84 kg / 165.22 N Magnetic Induction 413.45 mT / 4135 Gs
length
30 mm [±0,1 mm]
Width
15 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
33.75 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

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24.48 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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Technical data - MPL 30x15x10 / N38 - lamellar magnet

Specification / characteristics - MPL 30x15x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020389
GTIN/EAN 5906301811886
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 30 mm [±0,1 mm]
Width 15 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 33.75 g
Magnetization Direction ↑ axial
Load capacity ~ ? 16.84 kg / 165.22 N
Magnetic Induction ~ ? 413.45 mT / 4135 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x15x10 / 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

Physical simulation of the product - report

These values constitute the result of a mathematical simulation. Values rely on algorithms for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Use these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - power drop
MPL 30x15x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4133 Gs
413.3 mT
 16.84 kg / 37.13 pounds
16840.0 g / 165.2 N
 crushing
1 mm 3754 Gs
375.4 mT
 13.89 kg / 30.62 pounds
13889.5 g / 136.3 N
 crushing
2 mm 3365 Gs
336.5 mT
 11.16 kg / 24.60 pounds
11159.2 g / 109.5 N
 crushing
3 mm 2988 Gs
298.8 mT
 8.80 kg / 19.41 pounds
8803.6 g / 86.4 N
 strong
5 mm 2321 Gs
232.1 mT
 5.31 kg / 11.71 pounds
5309.9 g / 52.1 N
 strong
10 mm 1225 Gs
122.5 mT
 1.48 kg / 3.26 pounds
1480.1 g / 14.5 N
 safe
15 mm 684 Gs
68.4 mT
 0.46 kg / 1.02 pounds
461.6 g / 4.5 N
 safe
20 mm 409 Gs
40.9 mT
 0.16 kg / 0.36 pounds
164.8 g / 1.6 N
 safe
30 mm 173 Gs
17.3 mT
 0.03 kg / 0.07 pounds
29.6 g / 0.3 N
 safe
50 mm 50 Gs
5.0 mT
 0.00 kg / 0.01 pounds
2.4 g / 0.0 N
 safe
Grip strength drops sharply per each millimeter of spacing. Remember that even the smallest gap (e.g., dirt, varnish, rust) significantly reduces the pull force. Magnets operate most effectively during direct contact; gap weakens the force. See how quickly the load capacity plummet, when the product does not adhere flatly to the steel surface. When designing the assembly, eliminate redundant distances.

Table 2: Vertical capacity (vertical surface)
MPL 30x15x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 3.37 kg / 7.43 pounds
3368.0 g / 33.0 N
1 mm Stal (~0.2) 2.78 kg / 6.12 pounds
2778.0 g / 27.3 N
2 mm Stal (~0.2) 2.23 kg / 4.92 pounds
2232.0 g / 21.9 N
3 mm Stal (~0.2) 1.76 kg / 3.88 pounds
1760.0 g / 17.3 N
5 mm Stal (~0.2) 1.06 kg / 2.34 pounds
1062.0 g / 10.4 N
10 mm Stal (~0.2) 0.30 kg / 0.65 pounds
296.0 g / 2.9 N
15 mm Stal (~0.2) 0.09 kg / 0.20 pounds
92.0 g / 0.9 N
20 mm Stal (~0.2) 0.03 kg / 0.07 pounds
32.0 g / 0.3 N
30 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
This section shows the approximate weight limit required to initiate the downward movement of the magnet downwards against a upright steel plate (considering standard friction coefficient). This value is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 30x15x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
5.05 kg / 11.14 pounds
5052.0 g / 49.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
3.37 kg / 7.43 pounds
3368.0 g / 33.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.68 kg / 3.71 pounds
1684.0 g / 16.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
8.42 kg / 18.56 pounds
8420.0 g / 82.6 N
When mounting a element on a upright surface (e.g., a fridge), it will only hold just approx. 1/5 of its maximum pull force. Gravitational force and a low friction coefficient mean that products move down easier than they pop off the substrate. Designing a wall mount? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the element will slip down under a significantly smaller load. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MPL 30x15x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.84 kg / 1.86 pounds
842.0 g / 8.3 N
1 mm
13%
 2.11 kg / 4.64 pounds
2105.0 g / 20.7 N
2 mm
25%
 4.21 kg / 9.28 pounds
4210.0 g / 41.3 N
3 mm
38%
 6.31 kg / 13.92 pounds
6315.0 g / 62.0 N
5 mm
63%
 10.53 kg / 23.20 pounds
10525.0 g / 103.3 N
10 mm
100%
 16.84 kg / 37.13 pounds
16840.0 g / 165.2 N
11 mm
100%
 16.84 kg / 37.13 pounds
16840.0 g / 165.2 N
12 mm
100%
 16.84 kg / 37.13 pounds
16840.0 g / 165.2 N
A thin sheet is unable to conduct the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a too thin substrate, the field will penetrate right through and the holding will be smaller. To achieve full efficiency of this magnet's power, you require a sufficiently solid backing of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the holder holds weaker. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 30x15x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 16.84 kg / 37.13 pounds
16840.0 g / 165.2 N
 OK
40 °C -2.2% 16.47 kg / 36.31 pounds
16469.5 g / 161.6 N
 OK
60 °C -4.4% 16.10 kg / 35.49 pounds
16099.0 g / 157.9 N
80 °C -6.6% 15.73 kg / 34.68 pounds
15728.6 g / 154.3 N
100 °C -28.8% 11.99 kg / 26.43 pounds
11990.1 g / 117.6 N
Classic neodymiums change their properties power after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently destroy this product. With increasing heat, the magnet's capacity momentarily decreases. Avoid using this product near heat sources exceeding its operating temperature limit. Ignoring the limit will result in permanent loss of magnetic properties.
*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) risk losing magnetic properties sooner than taller cylinders. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 30x15x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 47.39 kg / 104.48 pounds
5 357 Gs
7.11 kg / 15.67 pounds
7109 g / 69.7 N
 N/A
1 mm 43.23 kg / 95.30 pounds
7 895 Gs
6.48 kg / 14.29 pounds
6484 g / 63.6 N
 38.90 kg / 85.77 pounds
~0 Gs
2 mm 39.09 kg / 86.17 pounds
7 507 Gs
5.86 kg / 12.93 pounds
5863 g / 57.5 N
 35.18 kg / 77.56 pounds
~0 Gs
3 mm 35.13 kg / 77.45 pounds
7 117 Gs
5.27 kg / 11.62 pounds
5270 g / 51.7 N
 31.62 kg / 69.70 pounds
~0 Gs
5 mm 27.95 kg / 61.61 pounds
6 348 Gs
4.19 kg / 9.24 pounds
4192 g / 41.1 N
 25.15 kg / 55.45 pounds
~0 Gs
10 mm 14.94 kg / 32.94 pounds
4 642 Gs
2.24 kg / 4.94 pounds
2242 g / 22.0 N
 13.45 kg / 29.65 pounds
~0 Gs
20 mm 4.17 kg / 9.18 pounds
2 451 Gs
0.62 kg / 1.38 pounds
625 g / 6.1 N
 3.75 kg / 8.26 pounds
~0 Gs
50 mm 0.19 kg / 0.41 pounds
519 Gs
0.03 kg / 0.06 pounds
28 g / 0.3 N
 0.17 kg / 0.37 pounds
~0 Gs
60 mm 0.08 kg / 0.18 pounds
347 Gs
0.01 kg / 0.03 pounds
13 g / 0.1 N
 0.08 kg / 0.17 pounds
~0 Gs
70 mm 0.04 kg / 0.09 pounds
242 Gs
0.01 kg / 0.01 pounds
6 g / 0.1 N
 0.04 kg / 0.08 pounds
~0 Gs
80 mm 0.02 kg / 0.05 pounds
175 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
90 mm 0.01 kg / 0.03 pounds
130 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.02 pounds
~0 Gs
100 mm 0.01 kg / 0.02 pounds
99 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products attract each other from a wider radius than a neodymium and metal setup. The setup of two magnets produces a massive flux and a larger range of operation. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when bringing together two magnets, the collision energy is extreme. The repulsion force is a bit weaker than the attraction, but still impressive.
*Field value in repulsion mode reaches ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Calculations show shear force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - warnings
MPL 30x15x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 12.0 cm
Hearing aid 10 Gs (1.0 mT) 9.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.5 cm
Mobile device 40 Gs (4.0 mT) 5.5 cm
Remote 50 Gs (5.0 mT) 5.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Powerful magnet radiation is a serious hazard to electronics as well as medical implants. These magnets generate a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation acts through matter and housings. Increased vigilance must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, car keys, speakers, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MPL 30x15x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.40 km/h
(6.22 m/s)
 0.65 J
30 mm 23.47 km/h
(6.52 m/s)
 0.72 J
50 mm 23.50 km/h
(6.53 m/s)
 0.72 J
100 mm 23.51 km/h
(6.53 m/s)
 0.72 J
NdFeB products are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a neodymium left loose turns into a projectile. Impact energy can destroy the magnet or injury to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Corrosion resistance
MPL 30x15x10 / 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: Construction data (Flux)
MPL 30x15x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 18 390 Mx 183.9 µWb
Pc Coefficient 0.52 Low (Flat)
Total magnetic flux passing through the pole surface. Key data when building generators and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 30x15x10 / N38

Environment Effective steel pull Effect
Air (land) 16.84 kg Standard
Water (riverbed) 19.28 kg
(+2.44 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical surface, the magnet holds merely ~20% of its nominal pull.

2. Efficiency vs thickness

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

3. Thermal stability

*For N38 material, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.52

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

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%

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: 020389-2026
Measurement Calculator

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Component MPL 30x15x10 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 16.84 kg), this product is available immediately from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is sliding 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 16.84 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 16.84 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 30x15x10 / N38, we recommend utilizing strong epoxy glues (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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 30x15x10 / N38 model is magnetized axially (dimension 10 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (30x15 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.
The presented product is a neodymium magnet with precisely defined parameters: 30 mm (length), 15 mm (width), and 10 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 16.84 kg (force ~165.22 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They have unchanged lifting capacity, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They retain their magnetic properties even under external field action,
  • In other words, due to the smooth layer of nickel, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
  • 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...
  • Due to the possibility of accurate molding and customization to individualized projects, neodymium magnets can be modeled in a variety of shapes and sizes, which expands the range of possible applications,
  • Huge importance in modern industrial fields – they serve a role in magnetic memories, motor assemblies, medical equipment, as well as technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in small systems

Weaknesses

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using a housing - magnetic mount.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum magnetic pulling force – what contributes to it?

The load parameter shown concerns the limit force, obtained under ideal test conditions, namely:
  • using a plate made of high-permeability steel, serving as a ideal flux conductor
  • whose thickness is min. 10 mm
  • with an polished contact surface
  • without any insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

Bear in mind that the application force will differ depending on the following factors, starting with the most relevant:
  • Clearance – existence of any layer (rust, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Steel type – low-carbon steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
  • Smoothness – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the load capacity.

Safe handling of NdFeB magnets
Machining danger

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Swallowing risk

Product intended for adults. Tiny parts can be swallowed, leading to serious injuries. Store away from kids and pets.

Compass and GPS

A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Handling guide

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Finger safety

Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!

Medical interference

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Skin irritation risks

Certain individuals suffer from a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to dermatitis. We strongly advise wear protective gloves.

Threat to electronics

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Eye protection

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them cracking into shards.

Do not overheat magnets

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Security! More info about risks in the article: Magnet Safety Guide.