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MW 10x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010008

GTIN/EAN: 5906301810070

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.77 g

Magnetization Direction

↑ axial

Load capacity

2.15 kg / 21.04 N

Magnetic Induction

318.70 mT / 3187 Gs

Coating

[NiCuNi] Nickel

technical parameters »

0.726 ZŁ with VAT / pcs + price for transport

0.590 ZŁ net + 23% VAT / pcs

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Technical of the product - MW 10x3 / N38 - cylindrical magnet

Specification / characteristics - MW 10x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010008
GTIN/EAN 5906301810070
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 3 mm [±0,1 mm]
Weight 1.77 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.15 kg / 21.04 N
Magnetic Induction ~ ? 318.70 mT / 3187 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x3 / 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

Technical modeling of the magnet - technical parameters

Presented values represent the result of a physical simulation. Values rely on algorithms for the class Nd2Fe14B. Real-world parameters may differ from theoretical values. Please consider these data as a reference point during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MW 10x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3185 Gs
318.5 mT
 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
 medium risk
1 mm 2657 Gs
265.7 mT
 1.50 kg / 3.30 lbs
1496.2 g / 14.7 N
 low risk
2 mm 2081 Gs
208.1 mT
 0.92 kg / 2.02 lbs
918.1 g / 9.0 N
 low risk
3 mm 1573 Gs
157.3 mT
 0.52 kg / 1.16 lbs
524.4 g / 5.1 N
 low risk
5 mm 874 Gs
87.4 mT
 0.16 kg / 0.36 lbs
161.7 g / 1.6 N
 low risk
10 mm 241 Gs
24.1 mT
 0.01 kg / 0.03 lbs
12.3 g / 0.1 N
 low risk
15 mm 92 Gs
9.2 mT
 0.00 kg / 0.00 lbs
1.8 g / 0.0 N
 low risk
20 mm 44 Gs
4.4 mT
 0.00 kg / 0.00 lbs
0.4 g / 0.0 N
 low risk
30 mm 14 Gs
1.4 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
50 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Pulling power drops sharply with every mm of distance. Remember that even a microscopic distance (e.g., contamination, paint, veneer) significantly weakens the grip. Neodymiums work strongest at the point of direct contact; distance weakens the power. Observe how rapidly the parameters fall, when the product does not touch directly to the steel surface. When calculating the assembly, eliminate unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MW 10x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.43 kg / 0.95 lbs
430.0 g / 4.2 N
1 mm Stal (~0.2) 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
2 mm Stal (~0.2) 0.18 kg / 0.41 lbs
184.0 g / 1.8 N
3 mm Stal (~0.2) 0.10 kg / 0.23 lbs
104.0 g / 1.0 N
5 mm Stal (~0.2) 0.03 kg / 0.07 lbs
32.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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
The table below indicates the approximate force necessary to start the slippage of the magnet down along a vertical steel wall (considering standard friction coefficient). This parameter is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 10x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.64 kg / 1.42 lbs
645.0 g / 6.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.43 kg / 0.95 lbs
430.0 g / 4.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.22 kg / 0.47 lbs
215.0 g / 2.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.08 kg / 2.37 lbs
1075.0 g / 10.5 N
When placing a magnet on a upright surface (e.g., a board), it will maintain only approx. 20%-30% of nominal attraction strength. Gravitational force as well as a low friction coefficient cause that magnets move down easier than they detach. Want to create a hanger? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a much lighter cargo. Utilizing a rubberized coating can effectively raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 10x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.22 kg / 0.47 lbs
215.0 g / 2.1 N
1 mm
25%
 0.54 kg / 1.18 lbs
537.5 g / 5.3 N
2 mm
50%
 1.08 kg / 2.37 lbs
1075.0 g / 10.5 N
3 mm
75%
 1.61 kg / 3.55 lbs
1612.5 g / 15.8 N
5 mm
100%
 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
10 mm
100%
 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
11 mm
100%
 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
12 mm
100%
 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
A thin sheet is incapable of conduct the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the flux will pass right through and the holding will be smaller. To achieve full efficiency of this neodymium's potential, you need a suitably thick piece of steel. The saturation effect causes that on delicate walls (e.g., car bodies), the product holds weaker. We advise picking the steel dimension from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MW 10x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.15 kg / 4.74 lbs
2150.0 g / 21.1 N
 OK
40 °C -2.2% 2.10 kg / 4.64 lbs
2102.7 g / 20.6 N
 OK
60 °C -4.4% 2.06 kg / 4.53 lbs
2055.4 g / 20.2 N
80 °C -6.6% 2.01 kg / 4.43 lbs
2008.1 g / 19.7 N
100 °C -28.8% 1.53 kg / 3.37 lbs
1530.8 g / 15.0 N
Ordinary NdFeB products irreversibly lose power after exceeding the maximum temperature. Protect against heat – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the magnet's force temporarily decreases. Avoid using this product close to ovens higher than its safe range. Too high temperature will lead to destruction of magnetism.
*Engineering note: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently sooner compared to rod magnets. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MW 10x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.91 kg / 10.83 lbs
4 754 Gs
0.74 kg / 1.62 lbs
737 g / 7.2 N
 N/A
1 mm 4.18 kg / 9.22 lbs
5 877 Gs
0.63 kg / 1.38 lbs
627 g / 6.2 N
 3.76 kg / 8.30 lbs
~0 Gs
2 mm 3.42 kg / 7.54 lbs
5 314 Gs
0.51 kg / 1.13 lbs
513 g / 5.0 N
 3.08 kg / 6.78 lbs
~0 Gs
3 mm 2.71 kg / 5.98 lbs
4 732 Gs
0.41 kg / 0.90 lbs
407 g / 4.0 N
 2.44 kg / 5.38 lbs
~0 Gs
5 mm 1.59 kg / 3.52 lbs
3 630 Gs
0.24 kg / 0.53 lbs
239 g / 2.3 N
 1.44 kg / 3.16 lbs
~0 Gs
10 mm 0.37 kg / 0.81 lbs
1 747 Gs
0.06 kg / 0.12 lbs
55 g / 0.5 N
 0.33 kg / 0.73 lbs
~0 Gs
20 mm 0.03 kg / 0.06 lbs
483 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
 0.03 kg / 0.06 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
48 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
29 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
19 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
13 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
9 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
7 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 significantly greater distance than a magnet and steel combination. The setup of two magnets creates a more powerful interaction and a wider radius of operation. Want to build a powerful holder? Apply two magnets instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the collision energy is extreme. The repulsion force is a bit weaker than the connection force, but still large.
*Flux density for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Note: Calculations refer to shear force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MW 10x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 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) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Powerful magnet radiation poses a serious hazard to electronic devices and medical implants. These neodymiums produce a field that prevents correct functioning of digital equipment. Remember: the unseen radiation penetrates the body and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MW 10x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 35.27 km/h
(9.80 m/s)
 0.08 J
30 mm 60.88 km/h
(16.91 m/s)
 0.25 J
50 mm 78.60 km/h
(21.83 m/s)
 0.42 J
100 mm 111.15 km/h
(30.88 m/s)
 0.84 J
NdFeB products are very brittle – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or injury to skin. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 10x3 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 10x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 694 Mx 26.9 µWb
Pc Coefficient 0.40 Low (Flat)
Flux value passing through the magnet pole. Key data when building generators as well as sensors. Pc value defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 10x3 / N38

Environment Effective steel pull Effect
Air (land) 2.15 kg Standard
Water (riverbed) 2.46 kg
(+0.31 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.
1. Vertical hold

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Temperature resistance

*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) = 0.40

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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%
Environmental data
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: 010008-2026
Magnet Unit Converter
Pulling force
Magnetic Field
Insert your figure in one of the inputs, and all other values change automatically.

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The offered product is an exceptionally strong cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø10x3 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 2.15 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 21.04 N with a weight of only 1.77 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 long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are strong enough for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø10x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 3 mm. The key parameter here is the lifting capacity amounting to approximately 2.15 kg (force ~21.04 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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.

Pros and cons of neodymium magnets.

Advantages

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They retain full power for almost ten years – the drop is just ~1% (based on simulations),
  • They are resistant to demagnetization induced by external field influence,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • 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 modularity in constructing and the ability to customize to unusual requirements,
  • Wide application in high-tech industry – they are utilized in computer drives, electromotive mechanisms, medical equipment, and multitasking production systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of making nuts in the magnet and complicated forms - recommended is casing - magnet mounting.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Magnet power was determined for optimal configuration, taking into account:
  • using a sheet made of high-permeability steel, serving as a magnetic yoke
  • whose thickness equals approx. 10 mm
  • with a plane free of scratches
  • with direct contact (without paint)
  • during pulling in a direction perpendicular to the mounting surface
  • in neutral thermal conditions

Magnet lifting force in use – key factors

Please note that the application force will differ depending on the following factors, starting with the most relevant:
  • Air gap (betwixt the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
  • Load vector – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Plate material – mild steel attracts best. Alloy admixtures reduce magnetic properties and holding force.
  • Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Crushing force

Large magnets can crush fingers in a fraction of a second. Do not place your hand between two strong magnets.

Danger to the youngest

Absolutely store magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.

Caution required

Use magnets consciously. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their force.

Precision electronics

A strong magnetic field negatively affects the functioning of magnetometers in phones and GPS navigation. Maintain magnets close to a smartphone to avoid breaking the sensors.

Warning for heart patients

Patients with a heart stimulator have to keep an absolute distance from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets will cause them cracking into small pieces.

Power loss in heat

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Cards and drives

Powerful magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Machining danger

Dust produced during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Nickel coating and allergies

A percentage of the population suffer from a sensitization to Ni, which is the standard coating for NdFeB magnets. Extended handling may cause a rash. We recommend use safety gloves.

Safety First! Learn more about hazards in the article: Safety of working with magnets.