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MPL 5x5x1.2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020171

GTIN/EAN: 5906301811770

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1.2 mm [±0,1 mm]

Weight

0.22 g

Magnetization Direction

↑ axial

Load capacity

0.44 kg / 4.28 N

Magnetic Induction

245.17 mT / 2452 Gs

Coating

[NiCuNi] Nickel

view specifications »

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Technical - MPL 5x5x1.2 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x1.2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020171
GTIN/EAN 5906301811770
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 5 mm [±0,1 mm]
Width 5 mm [±0,1 mm]
Height 1.2 mm [±0,1 mm]
Weight 0.22 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.44 kg / 4.28 N
Magnetic Induction ~ ? 245.17 mT / 2452 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1.2 / 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 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

Technical simulation of the product - report

The following information represent the result of a mathematical simulation. Results rely on models for the material Nd2Fe14B. Actual conditions may deviate from the simulation results. Use these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - power drop
MPL 5x5x1.2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2450 Gs
245.0 mT
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
 low risk
1 mm 1739 Gs
173.9 mT
 0.22 kg / 0.49 LBS
221.8 g / 2.2 N
 low risk
2 mm 1054 Gs
105.4 mT
 0.08 kg / 0.18 LBS
81.4 g / 0.8 N
 low risk
3 mm 622 Gs
62.2 mT
 0.03 kg / 0.06 LBS
28.4 g / 0.3 N
 low risk
5 mm 241 Gs
24.1 mT
 0.00 kg / 0.01 LBS
4.3 g / 0.0 N
 low risk
10 mm 45 Gs
4.5 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 low risk
15 mm 15 Gs
1.5 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
20 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
30 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
50 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
Grip strength decreases drastically per each millimeter of spacing. Note that every additional insulation layer (e.g., contamination, varnish, veneer) strongly weakens the grip. Neodymiums hold optimally at the point of direct contact; gap kills the power. Observe how quickly the parameters fall, when the magnet does not adhere directly to the steel surface. When designing the arrangement, discard additional spacers.

Table 2: Slippage force (vertical surface)
MPL 5x5x1.2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.09 kg / 0.19 LBS
88.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.10 LBS
44.0 g / 0.4 N
2 mm Stal (~0.2) 0.02 kg / 0.04 LBS
16.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
This section presents the approximate holding capacity necessary to initiate the downward movement of the magnet vertically along a vertical steel wall (considering standard friction). This parameter is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 5x5x1.2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.13 kg / 0.29 LBS
132.0 g / 1.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.09 kg / 0.19 LBS
88.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.22 kg / 0.49 LBS
220.0 g / 2.2 N
When hanging a element on a upright wall (e.g., a fridge), it will only hold barely about 20%-30% of its nominal power. Gravitational force as well as a weak degree of grip cause that products slip easier than they pull off. Planning a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a much lighter weight. Application of an anti-slip coating can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MPL 5x5x1.2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.04 kg / 0.10 LBS
44.0 g / 0.4 N
1 mm
25%
 0.11 kg / 0.24 LBS
110.0 g / 1.1 N
2 mm
50%
 0.22 kg / 0.49 LBS
220.0 g / 2.2 N
3 mm
75%
 0.33 kg / 0.73 LBS
330.0 g / 3.2 N
5 mm
100%
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
10 mm
100%
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
11 mm
100%
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
12 mm
100%
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
A thin metal plate cannot conduct the entire magnetic field, which weakens actual performance of the magnet. If you mount a strong magnet to a too thin substrate, the field will pass right through and the pull force will drop sharply. To utilize full efficiency of this neodymium's potential, you require a sufficiently solid element of steel. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the product shows lower pull force. We recommend selecting the steel dimension from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MPL 5x5x1.2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
 OK
40 °C -2.2% 0.43 kg / 0.95 LBS
430.3 g / 4.2 N
 OK
60 °C -4.4% 0.42 kg / 0.93 LBS
420.6 g / 4.1 N
80 °C -6.6% 0.41 kg / 0.91 LBS
411.0 g / 4.0 N
100 °C -28.8% 0.31 kg / 0.69 LBS
313.3 g / 3.1 N
Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly destroy this magnet. As the temperature rises, the neodymium's power briefly drops. Refrain from using this magnet near heat sources higher than its safe range. Exceeding the critical threshold will cause destruction of magnetic properties.
*Engineering note: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (low Pc) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MPL 5x5x1.2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.92 kg / 2.04 LBS
4 027 Gs
0.14 kg / 0.31 LBS
139 g / 1.4 N
 N/A
1 mm 0.70 kg / 1.54 LBS
4 260 Gs
0.10 kg / 0.23 LBS
105 g / 1.0 N
 0.63 kg / 1.39 LBS
~0 Gs
2 mm 0.47 kg / 1.03 LBS
3 478 Gs
0.07 kg / 0.15 LBS
70 g / 0.7 N
 0.42 kg / 0.93 LBS
~0 Gs
3 mm 0.29 kg / 0.63 LBS
2 734 Gs
0.04 kg / 0.10 LBS
43 g / 0.4 N
 0.26 kg / 0.57 LBS
~0 Gs
5 mm 0.10 kg / 0.22 LBS
1 617 Gs
0.02 kg / 0.03 LBS
15 g / 0.1 N
 0.09 kg / 0.20 LBS
~0 Gs
10 mm 0.01 kg / 0.02 LBS
482 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
90 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
7 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
4 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
3 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
1 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
1 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products interact from a wider radius than a neodymium and metal combination. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Want to build a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the pinch force is extreme. The repulsion force is slightly lower than the connection force, but still significant.
*Field value between like poles is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Results apply to shear force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MPL 5x5x1.2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Mechanical watch 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.0 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Extremely neodym field poses a large risk to IT equipment and medical implants. These magnets generate a flux that destroys function of digital equipment. Be aware: the invisible magnetic field penetrates the body and plastic. Special caution must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MPL 5x5x1.2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 45.11 km/h
(12.53 m/s)
 0.02 J
30 mm 78.12 km/h
(21.70 m/s)
 0.05 J
50 mm 100.85 km/h
(28.01 m/s)
 0.09 J
100 mm 142.63 km/h
(39.62 m/s)
 0.17 J
Magnetic elements are delicate – a collision with steel causes immediate chipping. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can cause material chips or dangerous crushing to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MPL 5x5x1.2 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MPL 5x5x1.2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 695 Mx 7.0 µWb
Pc Coefficient 0.30 Low (Flat)
Flux value emitted by the pole surface. Key data for generator designers and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 5x5x1.2 / N38

Environment Effective steel pull Effect
Air (land) 0.44 kg Standard
Water (riverbed) 0.50 kg
(+0.06 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Vertical hold

*Warning: On a vertical surface, the magnet holds merely approx. 20-30% of its nominal pull.

2. Steel thickness impact

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.30

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
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%
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: 020171-2026
Measurement Calculator
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This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 5x5x1.2 mm and a weight of 0.22 g, guarantees the highest quality connection. This magnetic block with a force of 4.28 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. To separate the MPL 5x5x1.2 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 5x5x1.2 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 0.44 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.
For mounting flat magnets MPL 5x5x1.2 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 5x5x1.2 / N38 model is magnetized axially (dimension 1.2 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 (5x5 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 5x5x1.2 mm, which, at a weight of 0.22 g, makes it an element with high energy density. It is a magnetic block with dimensions 5x5x1.2 mm and a self-weight of 0.22 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of neodymium magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
  • They retain their magnetic properties even under external field action,
  • A magnet with a shiny nickel surface looks better,
  • Magnets exhibit impressive magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Due to the potential of flexible forming and adaptation to unique solutions, neodymium magnets can be created in a broad palette of forms and dimensions, which increases their versatility,
  • Versatile presence in electronics industry – they are commonly used in magnetic memories, brushless drives, medical devices, as well as complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • Due to limitations in realizing threads and complex shapes in magnets, we propose using casing - magnetic mount.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

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

The lifting capacity listed is a result of laboratory testing executed under standard conditions:
  • with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
  • possessing a thickness of min. 10 mm to avoid saturation
  • with an polished touching surface
  • without any air gap between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual holding force depends on many variables, listed from most significant:
  • Distance – existence of foreign body (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Plate texture – smooth surfaces ensure maximum contact, which increases force. Rough surfaces weaken the grip.
  • Temperature – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.

Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.

H&S for magnets
Do not drill into magnets

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Power loss in heat

Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.

Life threat

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Respect the power

Exercise caution. Rare earth magnets attract from a distance and snap with huge force, often faster than you can move away.

Keep away from computers

Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Nickel allergy

Certain individuals have a sensitization to Ni, which is the standard coating for NdFeB magnets. Prolonged contact may cause an allergic reaction. We suggest wear protective gloves.

GPS Danger

Be aware: rare earth magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, tablet, and GPS.

Swallowing risk

Strictly keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are life-threatening.

Bodily injuries

Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Fragile material

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Important! More info about hazards in the article: Magnet Safety Guide.