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

MW 10x4 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010010

GTIN/EAN: 5906301810094

5.00
Load capacity 2.80 kg / 27.42 N Magnetic Induction 386.91 mT / 3869 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
2.36 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check parameters »

0.830 zł net / pcs

1.021 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
0.830 zł
1.021 zł
price from 1125 pcs
0.730 zł
0.898 zł
price from 2250 pcs
0.705 zł
0.868 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!

Physical properties - MW 10x4 / N38 - cylindrical magnet

Specification / characteristics - MW 10x4 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010010
GTIN/EAN 5906301810094
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 10 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 2.36 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.80 kg / 27.42 N
Magnetic Induction ~ ? 386.91 mT / 3869 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x4 / 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 simulation of the assembly - data

These information constitute the outcome of a engineering simulation. Results rely on algorithms for the material Nd2Fe14B. Actual conditions may differ from theoretical values. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs distance) - power drop
MW 10x4 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3867 Gs
386.7 mT
 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
 strong
1 mm 3168 Gs
316.8 mT
 1.88 kg / 4.14 lbs
1879.8 g / 18.4 N
 low risk
2 mm 2460 Gs
246.0 mT
 1.13 kg / 2.50 lbs
1133.7 g / 11.1 N
 low risk
3 mm 1855 Gs
185.5 mT
 0.64 kg / 1.42 lbs
644.6 g / 6.3 N
 low risk
5 mm 1036 Gs
103.6 mT
 0.20 kg / 0.44 lbs
200.9 g / 2.0 N
 low risk
10 mm 293 Gs
29.3 mT
 0.02 kg / 0.04 lbs
16.1 g / 0.2 N
 low risk
15 mm 114 Gs
11.4 mT
 0.00 kg / 0.01 lbs
2.4 g / 0.0 N
 low risk
20 mm 55 Gs
5.5 mT
 0.00 kg / 0.00 lbs
0.6 g / 0.0 N
 low risk
30 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
50 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Magnetic force drops sharply with every mm of gap. Remember that even a microscopic distance (e.g., contamination, paint, dust) significantly reduces the pull force. Neodymiums work optimally in perfect adhesion; air break nullifies the force. Analyze how rapidly the load capacity fall, when the product does not touch flatly to the metal substrate. When planning the assembly, eliminate unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MW 10x4 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.56 kg / 1.23 lbs
560.0 g / 5.5 N
1 mm Stal (~0.2) 0.38 kg / 0.83 lbs
376.0 g / 3.7 N
2 mm Stal (~0.2) 0.23 kg / 0.50 lbs
226.0 g / 2.2 N
3 mm Stal (~0.2) 0.13 kg / 0.28 lbs
128.0 g / 1.3 N
5 mm Stal (~0.2) 0.04 kg / 0.09 lbs
40.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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 indicates the theoretical force needed to initiate the sliding of the magnet vertically along a upright steel wall (assuming standard friction coefficient). The holding force varies with the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 10x4 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.84 kg / 1.85 lbs
840.0 g / 8.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.28 kg / 0.62 lbs
280.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.40 kg / 3.09 lbs
1400.0 g / 13.7 N
When hanging a magnet on a upright plane (e.g., a car body), it will only hold only about 20%-30% of nominal attraction strength. Gravity as well as a weak degree of grip mean that holders slip faster than they pop off the substrate. Designing a wall mount? Remember that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a much lighter weight. Using a rubber coating can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x4 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.28 kg / 0.62 lbs
280.0 g / 2.7 N
1 mm
25%
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
2 mm
50%
 1.40 kg / 3.09 lbs
1400.0 g / 13.7 N
3 mm
75%
 2.10 kg / 4.63 lbs
2100.0 g / 20.6 N
5 mm
100%
 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
10 mm
100%
 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
11 mm
100%
 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
12 mm
100%
 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
A too thin steel is not enough to take in the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you need a suitably thick element of metal. The material oversaturation means that on delicate walls (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MW 10x4 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.80 kg / 6.17 lbs
2800.0 g / 27.5 N
 OK
40 °C -2.2% 2.74 kg / 6.04 lbs
2738.4 g / 26.9 N
 OK
60 °C -4.4% 2.68 kg / 5.90 lbs
2676.8 g / 26.3 N
80 °C -6.6% 2.62 kg / 5.77 lbs
2615.2 g / 25.7 N
100 °C -28.8% 1.99 kg / 4.40 lbs
1993.6 g / 19.6 N
Ordinary NdFeB products lose power above the temperature limit. Avoid high temperatures – high temperature can irreversibly destroy this product. With every degree above norm, the neodymium's force temporarily drops. Refrain from using this product near heat sources higher than its safe range. Too high temperature will cause destruction of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 10x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 7.24 kg / 15.96 lbs
5 247 Gs
1.09 kg / 2.39 lbs
1086 g / 10.7 N
 N/A
1 mm 6.04 kg / 13.31 lbs
7 061 Gs
0.91 kg / 2.00 lbs
905 g / 8.9 N
 5.43 kg / 11.98 lbs
~0 Gs
2 mm 4.86 kg / 10.71 lbs
6 336 Gs
0.73 kg / 1.61 lbs
729 g / 7.2 N
 4.37 kg / 9.64 lbs
~0 Gs
3 mm 3.81 kg / 8.41 lbs
5 612 Gs
0.57 kg / 1.26 lbs
572 g / 5.6 N
 3.43 kg / 7.56 lbs
~0 Gs
5 mm 2.22 kg / 4.90 lbs
4 283 Gs
0.33 kg / 0.73 lbs
333 g / 3.3 N
 2.00 kg / 4.41 lbs
~0 Gs
10 mm 0.52 kg / 1.15 lbs
2 071 Gs
0.08 kg / 0.17 lbs
78 g / 0.8 N
 0.47 kg / 1.03 lbs
~0 Gs
20 mm 0.04 kg / 0.09 lbs
587 Gs
0.01 kg / 0.01 lbs
6 g / 0.1 N
 0.04 kg / 0.08 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
61 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
37 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
24 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
16 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
12 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
9 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets interact from a significantly greater distance than a magnet and sheet setup. Such a system of two magnets produces a massive flux and a larger range of action. Planning to create a strong closure? Apply two magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the collision energy is massive. The levitation is marginally weaker than the connection force, but still large.
*Field value between like poles is approximately ~0 Gs in the exact middle of the gap (resulting from vector opposition).
Attention: Calculations apply to shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 10x4 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a large risk to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Special caution must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MW 10x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.00 km/h
(6.94 m/s)
 0.06 J
30 mm 25.09 km/h
(6.97 m/s)
 0.06 J
50 mm 25.09 km/h
(6.97 m/s)
 0.06 J
100 mm 25.09 km/h
(6.97 m/s)
 0.06 J
Magnetic elements are prone to chipping – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Be sure to control the product during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 10x4 / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Pc)
MW 10x4 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 142 Mx 31.4 µWb
Pc Coefficient 0.50 Low (Flat)
Flux value passing through the magnet pole. Key data in coil applications as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 10x4 / N38

Environment Effective steel pull Effect
Air (land) 2.80 kg Standard
Water (riverbed) 3.21 kg
(+0.41 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. Buoyancy helps in lifting finds.

1. Vertical hold

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

2. Steel saturation

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

3. Heat tolerance

*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) = 0.50

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

Chemical composition

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: 010010-2026
Magnet Unit Converter

Pulling force

Magnetic Induction

Just complete any input, to let the converter fill in the rest automatically.

Other deals

MW 70x40 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 70x40 / N38 - cylindrical magnet

395.40 zł brutto / pcs
UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread
Product available Ships today (order by 14:00)

UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

3.89 zł brutto / pcs
MW 10x6 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 10x6 / N38 - cylindrical magnet

1.045 zł brutto / pcs
MP 20x8x6 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 20x8x6 / N38 - ring magnet

5.17 zł brutto / pcs
The presented product is an incredibly powerful cylindrical magnet, made from advanced NdFeB material, which, with dimensions of Ø10x4 mm, guarantees optimal power. The MW 10x4 / N38 model boasts an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 2.80 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 27.42 N with a weight of only 2.36 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 10.1 mm) using two-component epoxy glues. To ensure stability in industry, 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 frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø10x4), 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 Ø10x4 mm, which, at a weight of 2.36 g, makes it an element with high magnetic energy density. The value of 27.42 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.36 g. The product has a [NiCuNi] coating, which secures it against external factors, 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 10 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 through the diameter if your project requires it.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • Their power is durable, and after approximately ten years it drops only by ~1% (theoretically),
  • Neodymium magnets are characterized by highly resistant to loss of magnetic properties caused by external interference,
  • In other words, due to the smooth layer of nickel, the element looks attractive,
  • They are known for high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to the option of flexible molding and adaptation to unique projects, NdFeB magnets can be modeled in a broad palette of forms and dimensions, which increases their versatility,
  • Wide application in advanced technology sectors – they are utilized in computer drives, electric motors, medical devices, also modern systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • 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
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing nuts and complex forms in magnets, we propose using cover - magnetic mechanism.
  • Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Furthermore, tiny parts of these products can disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, taking into account:
  • using a sheet made of low-carbon steel, functioning as a circuit closing element
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • characterized by smoothness
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at room temperature

Key elements affecting lifting force

Real force is influenced by specific conditions, such as (from most important):
  • Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Metal type – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
  • Surface condition – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Precautions when working with NdFeB magnets
Threat to navigation

An intense magnetic field disrupts the operation of compasses in phones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.

Operating temperature

Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and strength.

This is not a toy

Adult use only. Small elements pose a choking risk, leading to serious injuries. Keep out of reach of kids and pets.

Life threat

Warning for patients: Powerful magnets disrupt electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Fire warning

Powder produced during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Risk of cracking

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

Cards and drives

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Serious injuries

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Safe operation

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Warning for allergy sufferers

Some people suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in dermatitis. We suggest use protective gloves.

Important! Looking for details? Check our post: Why are neodymium magnets dangerous?