← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MW 15x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010031

GTIN/EAN: 5906301810308

5.00
Load capacity 5.39 kg / 52.83 N Magnetic Induction 343.70 mT / 3437 Gs
Diameter Ø
15 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
6.63 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view properties »

2.60 zł net / pcs

3.20 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
2.60 zł
3.20 zł
price from 250 pcs
2.44 zł
3.01 zł
price from 1000 pcs
2.29 zł
2.81 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

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.

Order by 14:00 and we’ll ship today!

Technical specification of the product - MW 15x5 / N38 - cylindrical magnet

Specification / characteristics - MW 15x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010031
GTIN/EAN 5906301810308
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 15 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 6.63 g
Magnetization Direction ↑ axial
Load capacity ~ ? 5.39 kg / 52.83 N
Magnetic Induction ~ ? 343.70 mT / 3437 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x5 / N38 - cylindrical 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 analysis of the assembly - report

These values represent the outcome of a engineering analysis. Values are based on algorithms for the material Nd2Fe14B. Actual conditions may differ. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
MW 15x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3436 Gs
343.6 mT
 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
 warning
1 mm 3054 Gs
305.4 mT
 4.26 kg / 9.39 lbs
4258.2 g / 41.8 N
 warning
2 mm 2633 Gs
263.3 mT
 3.17 kg / 6.98 lbs
3165.4 g / 31.1 N
 warning
3 mm 2221 Gs
222.1 mT
 2.25 kg / 4.96 lbs
2251.5 g / 22.1 N
 warning
5 mm 1521 Gs
152.1 mT
 1.06 kg / 2.33 lbs
1056.2 g / 10.4 N
 safe
10 mm 585 Gs
58.5 mT
 0.16 kg / 0.35 lbs
156.5 g / 1.5 N
 safe
15 mm 260 Gs
26.0 mT
 0.03 kg / 0.07 lbs
30.8 g / 0.3 N
 safe
20 mm 133 Gs
13.3 mT
 0.01 kg / 0.02 lbs
8.1 g / 0.1 N
 safe
30 mm 47 Gs
4.7 mT
 0.00 kg / 0.00 lbs
1.0 g / 0.0 N
 safe
50 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 safe
Grip strength decreases sharply with every mm of gap. Keep in mind that even a microscopic distance (e.g., contamination, varnish, rust) strongly weakens the grip. Magnets work most effectively at the point of direct contact; distance kills the force. Observe how rapidly the load capacity plummet, when the product does not adhere directly to the metal substrate. When calculating the mounting, discard unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MW 15x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.08 kg / 2.38 lbs
1078.0 g / 10.6 N
1 mm Stal (~0.2) 0.85 kg / 1.88 lbs
852.0 g / 8.4 N
2 mm Stal (~0.2) 0.63 kg / 1.40 lbs
634.0 g / 6.2 N
3 mm Stal (~0.2) 0.45 kg / 0.99 lbs
450.0 g / 4.4 N
5 mm Stal (~0.2) 0.21 kg / 0.47 lbs
212.0 g / 2.1 N
10 mm Stal (~0.2) 0.03 kg / 0.07 lbs
32.0 g / 0.3 N
15 mm Stal (~0.2) 0.01 kg / 0.01 lbs
6.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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
The following data calculates the estimated holding capacity needed to cause the sliding of the magnet down along a vertical steel plate (considering typical friction coefficient). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MW 15x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.62 kg / 3.56 lbs
1617.0 g / 15.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.08 kg / 2.38 lbs
1078.0 g / 10.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.54 kg / 1.19 lbs
539.0 g / 5.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.70 kg / 5.94 lbs
2695.0 g / 26.4 N
When hanging a holder on a vertical plane (e.g., a car body), it will maintain barely approx. 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that magnets slide down easier than they detach. Want to create a wall mount? Remember that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the element will give way down under a significantly smaller weight. Using a rubber layer can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 15x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.54 kg / 1.19 lbs
539.0 g / 5.3 N
1 mm
25%
 1.35 kg / 2.97 lbs
1347.5 g / 13.2 N
2 mm
50%
 2.70 kg / 5.94 lbs
2695.0 g / 26.4 N
3 mm
75%
 4.04 kg / 8.91 lbs
4042.5 g / 39.7 N
5 mm
100%
 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
10 mm
100%
 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
11 mm
100%
 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
12 mm
100%
 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
A thin sheet cannot focus the full magnetic flux, which squanders power of the holder. Should you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To achieve the maximum of this neodymium's potential, you require a sufficiently solid piece of metal. The saturation phenomenon causes that on thin elements (e.g., appliance housings), the magnet holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 15x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 5.39 kg / 11.88 lbs
5390.0 g / 52.9 N
 OK
40 °C -2.2% 5.27 kg / 11.62 lbs
5271.4 g / 51.7 N
 OK
60 °C -4.4% 5.15 kg / 11.36 lbs
5152.8 g / 50.5 N
80 °C -6.6% 5.03 kg / 11.10 lbs
5034.3 g / 49.4 N
100 °C -28.8% 3.84 kg / 8.46 lbs
3837.7 g / 37.6 N
Standard neodymium magnets lose parameters past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly destroy this product. With increasing heat, the neodymium's capacity momentarily lowers. Refrain from using this product close to ovens exceeding its working range. Too high temperature will cause permanent loss of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress than taller cylinders. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 15x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 12.86 kg / 28.35 lbs
4 954 Gs
1.93 kg / 4.25 lbs
1929 g / 18.9 N
 N/A
1 mm 11.54 kg / 25.43 lbs
6 508 Gs
1.73 kg / 3.81 lbs
1730 g / 17.0 N
 10.38 kg / 22.89 lbs
~0 Gs
2 mm 10.16 kg / 22.40 lbs
6 107 Gs
1.52 kg / 3.36 lbs
1524 g / 14.9 N
 9.14 kg / 20.16 lbs
~0 Gs
3 mm 8.82 kg / 19.44 lbs
5 689 Gs
1.32 kg / 2.92 lbs
1322 g / 13.0 N
 7.93 kg / 17.49 lbs
~0 Gs
5 mm 6.40 kg / 14.11 lbs
4 847 Gs
0.96 kg / 2.12 lbs
960 g / 9.4 N
 5.76 kg / 12.70 lbs
~0 Gs
10 mm 2.52 kg / 5.56 lbs
3 042 Gs
0.38 kg / 0.83 lbs
378 g / 3.7 N
 2.27 kg / 5.00 lbs
~0 Gs
20 mm 0.37 kg / 0.82 lbs
1 171 Gs
0.06 kg / 0.12 lbs
56 g / 0.5 N
 0.34 kg / 0.74 lbs
~0 Gs
50 mm 0.01 kg / 0.01 lbs
153 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.01 lbs
95 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
63 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
44 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
32 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
23 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products attract each other from a much further distance than a magnet and steel setup. The connection of two magnets generates a stronger field and a further horizon of action. Designing a strong closure? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when bringing together two magnets, the impact force is huge. The levitation is slightly lower than the attraction, but still impressive.
*Field value between like poles drops to ~0 Gs in the exact middle of the gap (due to field cancellation).
* Figures show friction force of two identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 15x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.0 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Timepiece 20 Gs (2.0 mT) 4.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.5 cm
Remote 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
A strong magnetic field poses a large risk to electronic devices and medical implants. These neodymiums generate a field that disrupts operation of sensitive medical devices. Remember: the unseen radiation acts through matter and glass. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 15x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.33 km/h
(7.04 m/s)
 0.16 J
30 mm 25.70 km/h
(7.14 m/s)
 0.17 J
50 mm 25.70 km/h
(7.14 m/s)
 0.17 J
100 mm 25.70 km/h
(7.14 m/s)
 0.17 J
Magnetic elements are delicate – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Corrosion resistance
MW 15x5 / 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 (Pc)
MW 15x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 6 428 Mx 64.3 µWb
Pc Coefficient 0.44 Low (Flat)
Total magnetic flux emitted by the pole surface. Key data when building generators as well as sensors. Pc value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 15x5 / N38

Environment Effective steel pull Effect
Air (land) 5.39 kg Standard
Water (riverbed) 6.17 kg
(+0.78 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

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

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.44

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%

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: 010031-2026
Quick Unit Converter

Pulling force

Magnetic Field

Input your figure in one of the inputs, and the remaining units will recalculate on the fly.

Other products

MP 41x15x10 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 41x15x10 / N38 - ring magnet

50.00 zł brutto / pcs
JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs
Product available Ships today (order by 14:00)

JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs

8.99 zł brutto / pcs
SMZR 32x250 / N52 - magnetic separator with handle
Product available Ships today (order by 14:00)

SMZR 32x250 / N52 - magnetic separator with handle

774.90 zł brutto / pcs
MP 10x6x4 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 10x6x4 / N38 - ring magnet

0.898 zł brutto / pcs
The offered product is an exceptionally strong rod magnet, composed of durable NdFeB material, which, with dimensions of Ø15x5 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 5.39 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 52.83 N with a weight of only 6.63 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø15x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 5 mm. The value of 52.83 N means that the magnet is capable of holding a weight many times exceeding its own mass of 6.63 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 through the diameter if your project requires it.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:
  • Their strength remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
  • Neodymium magnets prove to be highly resistant to loss of magnetic properties caused by external field sources,
  • A magnet with a shiny gold surface is more attractive,
  • Neodymium magnets achieve maximum magnetic induction on a small area, which allows for strong attraction,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Thanks to freedom in constructing and the ability to adapt to specific needs,
  • Universal use in modern industrial fields – they are used in data components, drive modules, advanced medical instruments, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in small systems

Cons

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • Neodymium 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. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can complicate diagnosis medical when they are in the body.
  • Due to complex production process, their price is higher than average,

Pull force analysis

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

The lifting capacity listed is a measurement result conducted under standard conditions:
  • on a base made of structural steel, optimally conducting the magnetic flux
  • whose thickness reaches at least 10 mm
  • with an ground contact surface
  • without any clearance between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • at temperature room level

Determinants of practical lifting force of a magnet

Effective lifting capacity is influenced by specific conditions, mainly (from most important):
  • Distance – existence of any layer (paint, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick sheet does not close the flux, causing part of the power to be wasted into the air.
  • Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Smoothness – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was assessed using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets
Data carriers

Device Safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Mechanical processing

Mechanical processing of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Handling rules

Handle magnets with awareness. Their powerful strength can shock even experienced users. Be vigilant and do not underestimate their force.

Life threat

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Shattering risk

Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Do not overheat magnets

Watch the temperature. Heating the magnet to high heat will ruin its properties and strength.

Warning for allergy sufferers

Certain individuals experience a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Extended handling might lead to an allergic reaction. We recommend wear protective gloves.

Keep away from children

Neodymium magnets are not suitable for play. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.

Phone sensors

An intense magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Bodily injuries

Protect your hands. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Security! More info about risks in the article: Safety of working with magnets.