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MW 15x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010026

GTIN/EAN: 5906301810254

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

1.33 g

Magnetization Direction

↑ axial

Load capacity

0.44 kg / 4.29 N

Magnetic Induction

81.93 mT / 819 Gs

Coating

[NiCuNi] Nickel

0.800 with VAT / pcs + price for transport

0.650 ZŁ net + 23% VAT / pcs

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Technical data of the product - MW 15x1 / N38 - cylindrical magnet

Specification / characteristics - MW 15x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010026
GTIN/EAN 5906301810254
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 1 mm [±0,1 mm]
Weight 1.33 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.44 kg / 4.29 N
Magnetic Induction ~ ? 81.93 mT / 819 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x1 / 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

Physical simulation of the magnet - data

These values represent the direct effect of a mathematical calculation. Results are based on models for the material Nd2Fe14B. Actual performance might slightly differ from theoretical values. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MW 15x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 819 Gs
81.9 mT
0.44 kg / 0.97 lbs
440.0 g / 4.3 N
low risk
1 mm 778 Gs
77.8 mT
0.40 kg / 0.88 lbs
397.0 g / 3.9 N
low risk
2 mm 705 Gs
70.5 mT
0.33 kg / 0.72 lbs
326.0 g / 3.2 N
low risk
3 mm 615 Gs
61.5 mT
0.25 kg / 0.55 lbs
248.0 g / 2.4 N
low risk
5 mm 434 Gs
43.4 mT
0.12 kg / 0.27 lbs
123.5 g / 1.2 N
low risk
10 mm 163 Gs
16.3 mT
0.02 kg / 0.04 lbs
17.3 g / 0.2 N
low risk
15 mm 68 Gs
6.8 mT
0.00 kg / 0.01 lbs
3.1 g / 0.0 N
low risk
20 mm 34 Gs
3.4 mT
0.00 kg / 0.00 lbs
0.7 g / 0.0 N
low risk
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 lbs
0.1 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

Table 2: Slippage force (vertical surface)
MW 15x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.09 kg / 0.19 lbs
88.0 g / 0.9 N
1 mm Stal (~0.2) 0.08 kg / 0.18 lbs
80.0 g / 0.8 N
2 mm Stal (~0.2) 0.07 kg / 0.15 lbs
66.0 g / 0.6 N
3 mm Stal (~0.2) 0.05 kg / 0.11 lbs
50.0 g / 0.5 N
5 mm Stal (~0.2) 0.02 kg / 0.05 lbs
24.0 g / 0.2 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

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.13 kg / 0.29 lbs
132.0 g / 1.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.09 kg / 0.19 lbs
88.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.10 lbs
44.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.22 kg / 0.49 lbs
220.0 g / 2.2 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 15x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.04 kg / 0.10 lbs
44.0 g / 0.4 N
1 mm
25%
0.11 kg / 0.24 lbs
110.0 g / 1.1 N
2 mm
50%
0.22 kg / 0.49 lbs
220.0 g / 2.2 N
3 mm
75%
0.33 kg / 0.73 lbs
330.0 g / 3.2 N
5 mm
100%
0.44 kg / 0.97 lbs
440.0 g / 4.3 N
10 mm
100%
0.44 kg / 0.97 lbs
440.0 g / 4.3 N
11 mm
100%
0.44 kg / 0.97 lbs
440.0 g / 4.3 N
12 mm
100%
0.44 kg / 0.97 lbs
440.0 g / 4.3 N

Table 5: Working in heat (stability) - power drop
MW 15x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.44 kg / 0.97 lbs
440.0 g / 4.3 N
OK
40 °C -2.2% 0.43 kg / 0.95 lbs
430.3 g / 4.2 N
OK
60 °C -4.4% 0.42 kg / 0.93 lbs
420.6 g / 4.1 N
80 °C -6.6% 0.41 kg / 0.91 lbs
411.0 g / 4.0 N
100 °C -28.8% 0.31 kg / 0.69 lbs
313.3 g / 3.1 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 15x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.73 kg / 1.61 lbs
1 597 Gs
0.11 kg / 0.24 lbs
110 g / 1.1 N
N/A
1 mm 0.70 kg / 1.55 lbs
1 607 Gs
0.11 kg / 0.23 lbs
106 g / 1.0 N
0.63 kg / 1.40 lbs
~0 Gs
2 mm 0.66 kg / 1.45 lbs
1 556 Gs
0.10 kg / 0.22 lbs
99 g / 1.0 N
0.59 kg / 1.31 lbs
~0 Gs
3 mm 0.60 kg / 1.33 lbs
1 489 Gs
0.09 kg / 0.20 lbs
91 g / 0.9 N
0.54 kg / 1.20 lbs
~0 Gs
5 mm 0.48 kg / 1.05 lbs
1 323 Gs
0.07 kg / 0.16 lbs
71 g / 0.7 N
0.43 kg / 0.95 lbs
~0 Gs
10 mm 0.21 kg / 0.45 lbs
868 Gs
0.03 kg / 0.07 lbs
31 g / 0.3 N
0.18 kg / 0.41 lbs
~0 Gs
20 mm 0.03 kg / 0.06 lbs
325 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
37 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
23 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
15 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
10 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
7 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
5 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Safety (HSE) (implants) - precautionary measures
MW 15x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Timepiece 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 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) 0.5 cm

Table 8: Dynamics (cracking risk) - warning
MW 15x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.79 km/h
(5.22 m/s)
0.02 J
30 mm 31.78 km/h
(8.83 m/s)
0.05 J
50 mm 41.02 km/h
(11.39 m/s)
0.09 J
100 mm 58.01 km/h
(16.11 m/s)
0.17 J

Table 9: Coating parameters (durability)
MW 15x1 / 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)

Table 10: Electrical data (Pc)
MW 15x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 025 Mx 20.3 µWb
Pc Coefficient 0.11 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 15x1 / N38

Environment Effective steel pull Effect
Air (land) 0.44 kg Standard
Water (riverbed) 0.50 kg
(+0.06 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Vertical hold

*Caution: On a vertical surface, the magnet holds merely a fraction of its nominal pull.

2. Steel saturation

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

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.11

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.

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: 010026-2026
Quick Unit Converter
Force (pull)

Magnetic Field

Other proposals

The offered product is a very strong rod magnet, composed of durable NdFeB material, which, with dimensions of Ø15x1 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 0.44 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring 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 4.29 N with a weight of only 1.33 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need the strongest magnets in the same volume (Ø15x1), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 1 mm. The key parameter here is the holding force amounting to approximately 0.44 kg (force ~4.29 N), which, with such defined dimensions, proves the high power 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 15 mm. 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 and weaknesses of Nd2Fe14B magnets.

Strengths

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • Their magnetic field remains stable, and after approximately 10 years it drops only by ~1% (theoretically),
  • Neodymium magnets remain highly resistant to magnetic field loss caused by magnetic disturbances,
  • Thanks to the smooth finish, the layer of nickel, gold-plated, or silver gives an modern appearance,
  • Neodymium magnets deliver maximum magnetic induction on a small area, which increases force concentration,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of custom machining and modifying to specific needs,
  • Versatile presence in modern industrial fields – they serve a role in computer drives, electromotive mechanisms, medical devices, also industrial machines.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing threads and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
  • Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Best holding force of the magnet in ideal parameterswhat it depends on?

The specified lifting capacity concerns the maximum value, measured under optimal environment, meaning:
  • using a sheet made of high-permeability steel, acting as a ideal flux conductor
  • with a thickness minimum 10 mm
  • characterized by even structure
  • under conditions of no distance (surface-to-surface)
  • during pulling in a direction perpendicular to the plane
  • at standard ambient temperature

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual holding force depends on many variables, listed from the most important:
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Surface structure – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Warnings
Combustion hazard

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Swallowing risk

Neodymium magnets are not intended for children. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.

Nickel coating and allergies

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop handling magnets and wear gloves.

Permanent damage

Keep cool. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Threat to electronics

Intense magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Life threat

Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Bone fractures

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!

Magnet fragility

Neodymium magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Precision electronics

A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Keep magnets near a device to avoid breaking the sensors.

Caution required

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their force.

Warning! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98