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MW 15x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010027

GTIN/EAN: 5906301810261

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

13.25 g

Magnetization Direction

↑ axial

Load capacity

7.70 kg / 75.55 N

Magnetic Induction

495.60 mT / 4956 Gs

Coating

[NiCuNi] Nickel

4.51 with VAT / pcs + price for transport

3.67 ZŁ net + 23% VAT / pcs

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Parameters as well as form of a neodymium magnet can be checked with our modular calculator.

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Physical properties - MW 15x10 / N38 - cylindrical magnet

Specification / characteristics - MW 15x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010027
GTIN/EAN 5906301810261
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 10 mm [±0,1 mm]
Weight 13.25 g
Magnetization Direction ↑ axial
Load capacity ~ ? 7.70 kg / 75.55 N
Magnetic Induction ~ ? 495.60 mT / 4956 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x10 / 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 analysis of the assembly - technical parameters

These data represent the outcome of a engineering calculation. Results rely on algorithms for the class Nd2Fe14B. Real-world performance may differ. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 15x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4954 Gs
495.4 mT
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
strong
1 mm 4303 Gs
430.3 mT
5.81 kg / 12.81 pounds
5810.9 g / 57.0 N
strong
2 mm 3660 Gs
366.0 mT
4.20 kg / 9.27 pounds
4203.8 g / 41.2 N
strong
3 mm 3068 Gs
306.8 mT
2.95 kg / 6.51 pounds
2953.2 g / 29.0 N
strong
5 mm 2106 Gs
210.6 mT
1.39 kg / 3.07 pounds
1392.2 g / 13.7 N
weak grip
10 mm 845 Gs
84.5 mT
0.22 kg / 0.49 pounds
224.2 g / 2.2 N
weak grip
15 mm 393 Gs
39.3 mT
0.05 kg / 0.11 pounds
48.5 g / 0.5 N
weak grip
20 mm 210 Gs
21.0 mT
0.01 kg / 0.03 pounds
13.8 g / 0.1 N
weak grip
30 mm 79 Gs
7.9 mT
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
weak grip
50 mm 21 Gs
2.1 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip

Table 2: Slippage load (vertical surface)
MW 15x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.54 kg / 3.40 pounds
1540.0 g / 15.1 N
1 mm Stal (~0.2) 1.16 kg / 2.56 pounds
1162.0 g / 11.4 N
2 mm Stal (~0.2) 0.84 kg / 1.85 pounds
840.0 g / 8.2 N
3 mm Stal (~0.2) 0.59 kg / 1.30 pounds
590.0 g / 5.8 N
5 mm Stal (~0.2) 0.28 kg / 0.61 pounds
278.0 g / 2.7 N
10 mm Stal (~0.2) 0.04 kg / 0.10 pounds
44.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.31 kg / 5.09 pounds
2310.0 g / 22.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.54 kg / 3.40 pounds
1540.0 g / 15.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.77 kg / 1.70 pounds
770.0 g / 7.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.85 kg / 8.49 pounds
3850.0 g / 37.8 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 15x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.77 kg / 1.70 pounds
770.0 g / 7.6 N
1 mm
25%
1.93 kg / 4.24 pounds
1925.0 g / 18.9 N
2 mm
50%
3.85 kg / 8.49 pounds
3850.0 g / 37.8 N
3 mm
75%
5.78 kg / 12.73 pounds
5775.0 g / 56.7 N
5 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
10 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
11 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
12 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N

Table 5: Working in heat (material behavior) - thermal limit
MW 15x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
OK
40 °C -2.2% 7.53 kg / 16.60 pounds
7530.6 g / 73.9 N
OK
60 °C -4.4% 7.36 kg / 16.23 pounds
7361.2 g / 72.2 N
OK
80 °C -6.6% 7.19 kg / 15.86 pounds
7191.8 g / 70.6 N
100 °C -28.8% 5.48 kg / 12.09 pounds
5482.4 g / 53.8 N

Table 6: Two magnets (repulsion) - field collision
MW 15x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 26.73 kg / 58.93 pounds
5 797 Gs
4.01 kg / 8.84 pounds
4010 g / 39.3 N
N/A
1 mm 23.38 kg / 51.55 pounds
9 265 Gs
3.51 kg / 7.73 pounds
3507 g / 34.4 N
21.04 kg / 46.39 pounds
~0 Gs
2 mm 20.17 kg / 44.48 pounds
8 606 Gs
3.03 kg / 6.67 pounds
3026 g / 29.7 N
18.16 kg / 40.03 pounds
~0 Gs
3 mm 17.23 kg / 37.99 pounds
7 955 Gs
2.59 kg / 5.70 pounds
2585 g / 25.4 N
15.51 kg / 34.19 pounds
~0 Gs
5 mm 12.27 kg / 27.05 pounds
6 712 Gs
1.84 kg / 4.06 pounds
1840 g / 18.1 N
11.04 kg / 24.34 pounds
~0 Gs
10 mm 4.83 kg / 10.66 pounds
4 213 Gs
0.73 kg / 1.60 pounds
725 g / 7.1 N
4.35 kg / 9.59 pounds
~0 Gs
20 mm 0.78 kg / 1.72 pounds
1 690 Gs
0.12 kg / 0.26 pounds
117 g / 1.1 N
0.70 kg / 1.54 pounds
~0 Gs
50 mm 0.02 kg / 0.04 pounds
248 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
0.02 kg / 0.03 pounds
~0 Gs
60 mm 0.01 kg / 0.01 pounds
158 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.01 pounds
107 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
75 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
55 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
41 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MW 15x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 7.0 cm
Timepiece 20 Gs (2.0 mT) 5.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 4.0 cm
Remote 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 15x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.75 km/h
(6.88 m/s)
0.31 J
30 mm 42.12 km/h
(11.70 m/s)
0.91 J
50 mm 54.36 km/h
(15.10 m/s)
1.51 J
100 mm 76.88 km/h
(21.36 m/s)
3.02 J

Table 9: Anti-corrosion coating durability
MW 15x10 / 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: Construction data (Pc)
MW 15x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 8 827 Mx 88.3 µWb
Pc Coefficient 0.71 High (Stable)

Table 11: Physics of underwater searching
MW 15x10 / N38

Environment Effective steel pull Effect
Air (land) 7.70 kg Standard
Water (riverbed) 8.82 kg
(+1.12 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.
1. Wall mount (shear)

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely reduces the holding force.

3. Power loss vs temp

*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) = 0.71

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
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%
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: 010027-2026
Quick Unit Converter
Pulling force

Magnetic Field

Other deals

This product is an extremely powerful cylindrical magnet, manufactured from advanced NdFeB material, which, at dimensions of Ø15x10 mm, guarantees maximum efficiency. The MW 15x10 / N38 component boasts a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 7.70 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 75.55 N with a weight of only 13.25 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 15.1 mm) using two-component epoxy glues. To ensure long-term durability 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 frequently chosen standard for industrial neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø15x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
This model is characterized by dimensions Ø15x10 mm, which, at a weight of 13.25 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 7.70 kg (force ~75.55 N), which, with such compact 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. 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 rare earth magnets.

Advantages

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They do not lose power, even after around ten years – the reduction in strength is only ~1% (according to tests),
  • They are noted for resistance to demagnetization induced by external field influence,
  • In other words, due to the smooth layer of gold, the element becomes visually attractive,
  • Magnetic induction on the working part of the magnet remains maximum,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
  • Thanks to modularity in shaping and the capacity to customize to individual projects,
  • Universal use in innovative solutions – they are commonly used in computer drives, electromotive mechanisms, medical equipment, also modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions

Limitations

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also raises their 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
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complex shapes.
  • Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Additionally, small elements of these products can be problematic in diagnostics medical after entering the body.
  • Due to neodymium price, their price is relatively high,

Pull force analysis

Maximum holding power of the magnet – what it depends on?

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:
  • with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with a surface free of scratches
  • without the slightest air gap between the magnet and steel
  • during pulling in a direction vertical to the mounting surface
  • at temperature room level

What influences lifting capacity in practice

During everyday use, the actual holding force results from a number of factors, presented from most significant:
  • Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Load vector – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures decrease magnetic properties and holding force.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity was measured with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with NdFeB magnets
Keep away from electronics

Navigation devices and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Bone fractures

Big blocks can break fingers instantly. Never put your hand between two strong magnets.

Respect the power

Use magnets with awareness. Their immense force can surprise even experienced users. Plan your moves and respect their force.

Combustion hazard

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

Health Danger

People with a ICD should keep an safe separation from magnets. The magnetic field can interfere with the operation of the implant.

Magnetic media

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.

Heat sensitivity

Regular neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Nickel allergy

Some people suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact may cause a rash. We recommend use protective gloves.

Choking Hazard

NdFeB magnets are not intended for children. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and requires immediate surgery.

Caution! More info about hazards in the article: Safety of working with magnets.