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MW 8x1.5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010101

GTIN/EAN: 5906301811008

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

0.57 g

Magnetization Direction

↑ axial

Load capacity

0.74 kg / 7.27 N

Magnetic Induction

217.52 mT / 2175 Gs

Coating

[NiCuNi] Nickel

technical details »

0.455 ZŁ with VAT / pcs + price for transport

0.370 ZŁ net + 23% VAT / pcs

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Specifications as well as appearance of neodymium magnets can be tested on our power calculator.

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Technical parameters - MW 8x1.5 / N38 - cylindrical magnet

Specification / characteristics - MW 8x1.5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010101
GTIN/EAN 5906301811008
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 8 mm [±0,1 mm]
Height 1.5 mm [±0,1 mm]
Weight 0.57 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.74 kg / 7.27 N
Magnetic Induction ~ ? 217.52 mT / 2175 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x1.5 / N38 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 312 - 380 °C
Curie Temperature TF 593 - 716 °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 - technical parameters

The following data are the result of a engineering calculation. Values are based on models for the class Nd2Fe14B. Operational conditions may deviate from the simulation results. Treat these calculations as a supplementary guide for designers.

Table 1: Static force (force vs gap) - characteristics
MW 8x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2174 Gs
217.4 mT
 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
 weak grip
1 mm 1782 Gs
178.2 mT
 0.50 kg / 1.10 pounds
497.3 g / 4.9 N
 weak grip
2 mm 1310 Gs
131.0 mT
 0.27 kg / 0.59 pounds
268.7 g / 2.6 N
 weak grip
3 mm 914 Gs
91.4 mT
 0.13 kg / 0.29 pounds
130.8 g / 1.3 N
 weak grip
5 mm 439 Gs
43.9 mT
 0.03 kg / 0.07 pounds
30.2 g / 0.3 N
 weak grip
10 mm 99 Gs
9.9 mT
 0.00 kg / 0.00 pounds
1.5 g / 0.0 N
 weak grip
15 mm 35 Gs
3.5 mT
 0.00 kg / 0.00 pounds
0.2 g / 0.0 N
 weak grip
20 mm 16 Gs
1.6 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 weak grip
30 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 weak grip
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 weak grip
Magnetic force weakens drastically with every mm of distance. Keep in mind that even a very thin break (e.g., dirt, varnish, dust) strongly reduces the pull force. Neodymiums work optimally in perfect adhesion; distance kills the force. Analyze how flashily the pull force plummet, when the product does not adhere tightly to the metal substrate. When planning the assembly, eliminate unnecessary gaps.

Table 2: Sliding capacity (vertical surface)
MW 8x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.15 kg / 0.33 pounds
148.0 g / 1.5 N
1 mm Stal (~0.2) 0.10 kg / 0.22 pounds
100.0 g / 1.0 N
2 mm Stal (~0.2) 0.05 kg / 0.12 pounds
54.0 g / 0.5 N
3 mm Stal (~0.2) 0.03 kg / 0.06 pounds
26.0 g / 0.3 N
5 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 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 table below shows the theoretical holding capacity sufficient to cause the sliding of the magnet vertically on a vertical steel wall (considering standard friction coefficient). This parameter depends on the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 8x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.22 kg / 0.49 pounds
222.0 g / 2.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.37 kg / 0.82 pounds
370.0 g / 3.6 N
When mounting a magnet on a vertical surface (e.g., a car body), it will only hold only approx. 1/5 of nominal attraction strength. Gravity and a weak degree of grip influence the fact that magnets slip easier than they pop off the substrate. Designing a hanger? Consider that the sliding force is much weaker than the maximum static pull force. On a painted metal, the element will slip down under a significantly smaller cargo. Application of an anti-slip pad can drastically improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 8x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.07 kg / 0.16 pounds
74.0 g / 0.7 N
1 mm
25%
 0.19 kg / 0.41 pounds
185.0 g / 1.8 N
2 mm
50%
 0.37 kg / 0.82 pounds
370.0 g / 3.6 N
3 mm
75%
 0.55 kg / 1.22 pounds
555.0 g / 5.4 N
5 mm
100%
 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
10 mm
100%
 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
11 mm
100%
 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
12 mm
100%
 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
A thin sheet cannot conduct the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To achieve the maximum of this magnet's potential, you require a sufficiently solid element of steel. The saturation phenomenon causes that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MW 8x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.74 kg / 1.63 pounds
740.0 g / 7.3 N
 OK
40 °C -2.2% 0.72 kg / 1.60 pounds
723.7 g / 7.1 N
 OK
60 °C -4.4% 0.71 kg / 1.56 pounds
707.4 g / 6.9 N
80 °C -6.6% 0.69 kg / 1.52 pounds
691.2 g / 6.8 N
100 °C -28.8% 0.53 kg / 1.16 pounds
526.9 g / 5.2 N
Standard neodymium magnets change their properties strength past the thermal threshold. Protect against heat – heat can irreversibly destroy this product. With every degree above norm, the neodymium's power momentarily drops. Do not use this magnet close to heaters exceeding its safe range. Ignoring the limit will cause destruction of magnetic properties.
*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) may lose charge permanently under lower heat stress compared to rod magnets. The danger warning in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 8x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.46 kg / 3.23 pounds
3 712 Gs
0.22 kg / 0.48 pounds
220 g / 2.2 N
 N/A
1 mm 1.24 kg / 2.74 pounds
4 007 Gs
0.19 kg / 0.41 pounds
187 g / 1.8 N
 1.12 kg / 2.47 pounds
~0 Gs
2 mm 0.98 kg / 2.17 pounds
3 565 Gs
0.15 kg / 0.33 pounds
148 g / 1.4 N
 0.89 kg / 1.95 pounds
~0 Gs
3 mm 0.74 kg / 1.63 pounds
3 086 Gs
0.11 kg / 0.24 pounds
111 g / 1.1 N
 0.66 kg / 1.46 pounds
~0 Gs
5 mm 0.37 kg / 0.82 pounds
2 196 Gs
0.06 kg / 0.12 pounds
56 g / 0.5 N
 0.34 kg / 0.74 pounds
~0 Gs
10 mm 0.06 kg / 0.13 pounds
878 Gs
0.01 kg / 0.02 pounds
9 g / 0.1 N
 0.05 kg / 0.12 pounds
~0 Gs
20 mm 0.00 kg / 0.01 pounds
199 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
17 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
10 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
6 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
4 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
3 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
2 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums interact from a much further distance than a magnet and sheet combination. Such a system of two magnets generates a stronger field and a larger range of action. Designing a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Results demonstrate sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MW 8x1.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.0 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.0 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) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
A strong magnetic field is a large risk to IT equipment and pacemakers. These NdFeB products produce a field that disrupts operation of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 8x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 36.39 km/h
(10.11 m/s)
 0.03 J
30 mm 62.94 km/h
(17.48 m/s)
 0.09 J
50 mm 81.25 km/h
(22.57 m/s)
 0.15 J
100 mm 114.91 km/h
(31.92 m/s)
 0.29 J
Neodymium magnets are prone to chipping – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or injury to skin. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MW 8x1.5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 8x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 285 Mx 12.9 µWb
Pc Coefficient 0.27 Low (Flat)
Flux value emitted by the pole surface. Essential parameter for generator designers and motors. Pc value defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 8x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.74 kg Standard
Water (riverbed) 0.85 kg
(+0.11 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. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) severely reduces the holding force.

3. Temperature resistance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.27

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR
Elemental analysis
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
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: 010101-2026
Magnet Unit Converter
Pulling force
Field Strength
Input a figure in a single field to receive results in the other units at once.

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The offered product is an exceptionally strong rod magnet, composed of durable NdFeB material, which, with dimensions of Ø8x1.5 mm, guarantees the highest energy density. The MW 8x1.5 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 0.74 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 7.27 N with a weight of only 0.57 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø8x1.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø8x1.5 mm, which, at a weight of 0.57 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.74 kg (force ~7.27 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 8 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • Their magnetic field remains stable, and after approximately ten years it decreases only by ~1% (according to research),
  • Magnets perfectly protect themselves against demagnetization caused by ambient magnetic noise,
  • Thanks to the elegant finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to versatility in designing and the ability to modify to specific needs,
  • Universal use in electronics industry – they are commonly used in data components, brushless drives, precision medical tools, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in compact constructions

Weaknesses

Problematic aspects of neodymium magnets and proposals for their use:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • Neodymium magnets lose power 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 extremely resistant to heat
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Furthermore, small elements of these products can complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • on a block made of mild steel, perfectly concentrating the magnetic field
  • possessing a massiveness of min. 10 mm to avoid saturation
  • with an polished touching surface
  • under conditions of no distance (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • at conditions approx. 20°C

Determinants of lifting force in real conditions

Real force is influenced by working environment parameters, such as (from priority):
  • Gap (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
  • Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Heat – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate reduces the holding force.

Warnings
Metal Allergy

It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or select encased magnets.

Keep away from electronics

A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.

Thermal limits

Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Safe distance

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

Dust is flammable

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Handling guide

Handle magnets consciously. Their powerful strength can surprise even experienced users. Plan your moves and do not underestimate their power.

ICD Warning

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

Pinching danger

Large magnets can crush fingers instantly. Under no circumstances place your hand betwixt two attracting surfaces.

Product not for children

Absolutely keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are fatal.

Fragile material

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them cracking into shards.

Caution! Want to know more? Read our article: Why are neodymium magnets dangerous?