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MW 10x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010005

GTIN/EAN: 5906301810049

5.00
Load capacity 2.60 kg / 25.51 N Magnetic Induction 587.44 mT / 5874 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
8.84 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
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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.

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Weight along with structure of neodymium magnets can be tested using our magnetic mass calculator.

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Physical properties - MW 10x15 / N38 - cylindrical magnet

Specification / characteristics - MW 10x15 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010005
GTIN/EAN 5906301810049
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 15 mm [±0,1 mm]
Weight 8.84 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.60 kg / 25.51 N
Magnetic Induction ~ ? 587.44 mT / 5874 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x15 / N38 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 312 - 380 °C
Curie Temperature TF 593 - 716 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Engineering analysis of the magnet - data

These values constitute the result of a physical calculation. Values were calculated on models for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Use these data as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs gap) - characteristics
MW 10x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5870 Gs
587.0 mT
 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
 medium risk
1 mm 4702 Gs
470.2 mT
 1.67 kg / 3.68 LBS
1668.3 g / 16.4 N
 safe
2 mm 3645 Gs
364.5 mT
 1.00 kg / 2.21 LBS
1002.8 g / 9.8 N
 safe
3 mm 2784 Gs
278.4 mT
 0.58 kg / 1.29 LBS
584.8 g / 5.7 N
 safe
5 mm 1631 Gs
163.1 mT
 0.20 kg / 0.44 LBS
200.7 g / 2.0 N
 safe
10 mm 534 Gs
53.4 mT
 0.02 kg / 0.05 LBS
21.5 g / 0.2 N
 safe
15 mm 234 Gs
23.4 mT
 0.00 kg / 0.01 LBS
4.1 g / 0.0 N
 safe
20 mm 123 Gs
12.3 mT
 0.00 kg / 0.00 LBS
1.1 g / 0.0 N
 safe
30 mm 46 Gs
4.6 mT
 0.00 kg / 0.00 LBS
0.2 g / 0.0 N
 safe
50 mm 13 Gs
1.3 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Magnetic force decreases significantly with every subsequent millimeter of gap. Note that even the smallest gap (e.g., contamination, paint, veneer) strongly weakens the grip. Neodymiums work optimally at the point of direct contact; gap weakens the force. Analyze how flashily the pull force plummet, when the product does not touch flatly to the metal substrate. When planning the assembly, eliminate redundant distances.

Table 2: Vertical capacity (vertical surface)
MW 10x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.52 kg / 1.15 LBS
520.0 g / 5.1 N
1 mm Stal (~0.2) 0.33 kg / 0.74 LBS
334.0 g / 3.3 N
2 mm Stal (~0.2) 0.20 kg / 0.44 LBS
200.0 g / 2.0 N
3 mm Stal (~0.2) 0.12 kg / 0.26 LBS
116.0 g / 1.1 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
The table below defines the theoretical force sufficient to cause the sliding of the magnet downwards against a upright metal surface (assuming standard friction). The holding force depends on the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 10x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.78 kg / 1.72 LBS
780.0 g / 7.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.52 kg / 1.15 LBS
520.0 g / 5.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.26 kg / 0.57 LBS
260.0 g / 2.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.30 kg / 2.87 LBS
1300.0 g / 12.8 N
When hanging a holder on a upright wall (e.g., a board), it will maintain barely about 1/5 of nominal attraction strength. Gravity and a low friction coefficient influence the fact that holders move down easier than they pull off. Designing a hanger? Remember that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will give way down under a noticeably lighter cargo. Utilizing a rubberized coating can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.26 kg / 0.57 LBS
260.0 g / 2.6 N
1 mm
25%
 0.65 kg / 1.43 LBS
650.0 g / 6.4 N
2 mm
50%
 1.30 kg / 2.87 LBS
1300.0 g / 12.8 N
3 mm
75%
 1.95 kg / 4.30 LBS
1950.0 g / 19.1 N
5 mm
100%
 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
10 mm
100%
 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
11 mm
100%
 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
12 mm
100%
 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
A thin sheet is not enough to absorb the entire magnetic field, which weakens actual performance of the magnet. Should you mount a strong magnet to a thin surface, the flux will pass right through and the attraction force will be weaker. To squeeze 100% of this magnet's potential, you need a suitably thick backing of metal. The material oversaturation causes that on thin elements (e.g., thin profiles), the holder holds weaker. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (stability) - thermal limit
MW 10x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.60 kg / 5.73 LBS
2600.0 g / 25.5 N
 OK
40 °C -2.2% 2.54 kg / 5.61 LBS
2542.8 g / 24.9 N
 OK
60 °C -4.4% 2.49 kg / 5.48 LBS
2485.6 g / 24.4 N
 OK
80 °C -6.6% 2.43 kg / 5.35 LBS
2428.4 g / 23.8 N
100 °C -28.8% 1.85 kg / 4.08 LBS
1851.2 g / 18.2 N
Ordinary NdFeB products change their properties power past the thermal threshold. Avoid high temperatures – excessive heat can permanently destroy this magnet. With every degree above norm, the neodymium's force briefly lowers. Refrain from using this magnet close to ovens exceeding its working range. Too high temperature will lead to destruction of magnetic properties.
*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MW 10x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 16.68 kg / 36.78 LBS
6 103 Gs
2.50 kg / 5.52 LBS
2502 g / 24.5 N
 N/A
1 mm 13.52 kg / 29.80 LBS
10 567 Gs
2.03 kg / 4.47 LBS
2028 g / 19.9 N
 12.17 kg / 26.82 LBS
~0 Gs
2 mm 10.70 kg / 23.60 LBS
9 404 Gs
1.61 kg / 3.54 LBS
1606 g / 15.8 N
 9.63 kg / 21.24 LBS
~0 Gs
3 mm 8.35 kg / 18.40 LBS
8 304 Gs
1.25 kg / 2.76 LBS
1252 g / 12.3 N
 7.51 kg / 16.56 LBS
~0 Gs
5 mm 4.92 kg / 10.85 LBS
6 377 Gs
0.74 kg / 1.63 LBS
738 g / 7.2 N
 4.43 kg / 9.77 LBS
~0 Gs
10 mm 1.29 kg / 2.84 LBS
3 262 Gs
0.19 kg / 0.43 LBS
193 g / 1.9 N
 1.16 kg / 2.56 LBS
~0 Gs
20 mm 0.14 kg / 0.30 LBS
1 068 Gs
0.02 kg / 0.05 LBS
21 g / 0.2 N
 0.12 kg / 0.27 LBS
~0 Gs
50 mm 0.00 kg / 0.01 LBS
145 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
93 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
45 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
33 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
25 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 neodymium and metal combination. Such a system of two magnets produces a massive flux and a larger range of operation. Want to build a powerful holder? Apply two magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the collision energy is massive. The repulsion force is a bit weaker than the connection force, but still large.
*Field value between like poles drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
* Estimates show shear force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MW 10x15 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.5 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Mechanical watch 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 IT equipment and pacemakers. These neodymiums generate a flux that prevents correct functioning of digital equipment. Remember: the unseen radiation passes through tissues and plastic. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MW 10x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 12.35 km/h
(3.43 m/s)
 0.05 J
30 mm 12.43 km/h
(3.45 m/s)
 0.05 J
50 mm 12.43 km/h
(3.45 m/s)
 0.05 J
100 mm 12.43 km/h
(3.45 m/s)
 0.05 J
Neodymium magnets are very brittle – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
MW 10x15 / 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 (Flux)
MW 10x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 950 Mx 49.5 µWb
Pc Coefficient 1.09 High (Stable)
Total magnetic flux emitted by the magnet pole. Essential parameter when building generators as well as sensors. Pc value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 10x15 / N38

Environment Effective steel pull Effect
Air (land) 2.60 kg Standard
Water (riverbed) 2.98 kg
(+0.38 kg buoyancy gain)
+14.5%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
In water, the magnet feels stronger thanks to Archimedes' principle. 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 retains only ~20% of its perpendicular strength.

2. Plate thickness effect

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.09

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 and environmental data

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: 010005-2026
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The offered product is an extremely powerful cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø10x15 mm, guarantees maximum efficiency. This specific item boasts a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 2.60 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 25.51 N with a weight of only 8.84 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø10x15), 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 Ø10x15 mm, which, at a weight of 8.84 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 2.60 kg (force ~25.51 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 15 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths as well as weaknesses of rare earth magnets.

Benefits

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
  • They are resistant to demagnetization induced by external magnetic fields,
  • In other words, due to the shiny layer of nickel, the element is aesthetically pleasing,
  • Magnets are distinguished by exceptionally strong magnetic induction on the outer layer,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Considering the possibility of precise molding and adaptation to unique solutions, NdFeB magnets can be manufactured in a variety of shapes and sizes, which expands the range of possible applications,
  • Significant place in advanced technology sectors – they are commonly used in computer drives, electric drive systems, advanced medical instruments, as well as multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • Due to limitations in producing threads and complicated forms in magnets, we propose using a housing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these products can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

The declared magnet strength represents the limit force, recorded under ideal test conditions, namely:
  • using a sheet made of high-permeability steel, acting as a circuit closing element
  • whose thickness equals approx. 10 mm
  • with an ideally smooth contact surface
  • with total lack of distance (without coatings)
  • under perpendicular force direction (90-degree angle)
  • at room temperature

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on many variables, presented from the most important:
  • Distance – existence of foreign body (paint, tape, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safety rules for work with NdFeB magnets
Electronic devices

Data protection: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Power loss in heat

Control the heat. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Metal Allergy

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and choose encased magnets.

Caution required

Use magnets consciously. Their huge power can shock even experienced users. Plan your moves and respect their power.

Crushing risk

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Danger to the youngest

These products are not suitable for play. Swallowing several magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Do not drill into magnets

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Magnet fragility

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

ICD Warning

For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Phone sensors

GPS units and smartphones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

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