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Discover your passion involving underwater treasure hunting! Our specialized grips (F200, F400) provide grip certainty and huge lifting capacity. Stainless steel construction and strong lines will perform in any water.

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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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Technical parameters - 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 simulation of the product - technical parameters

These information constitute the result of a engineering simulation. Results rely on models for the material Nd2Fe14B. Operational parameters may differ. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
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 lbs
7700.0 g / 75.5 N
warning
1 mm 4303 Gs
430.3 mT
5.81 kg / 12.81 lbs
5810.9 g / 57.0 N
warning
2 mm 3660 Gs
366.0 mT
4.20 kg / 9.27 lbs
4203.8 g / 41.2 N
warning
3 mm 3068 Gs
306.8 mT
2.95 kg / 6.51 lbs
2953.2 g / 29.0 N
warning
5 mm 2106 Gs
210.6 mT
1.39 kg / 3.07 lbs
1392.2 g / 13.7 N
low risk
10 mm 845 Gs
84.5 mT
0.22 kg / 0.49 lbs
224.2 g / 2.2 N
low risk
15 mm 393 Gs
39.3 mT
0.05 kg / 0.11 lbs
48.5 g / 0.5 N
low risk
20 mm 210 Gs
21.0 mT
0.01 kg / 0.03 lbs
13.8 g / 0.1 N
low risk
30 mm 79 Gs
7.9 mT
0.00 kg / 0.00 lbs
2.0 g / 0.0 N
low risk
50 mm 21 Gs
2.1 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
low risk

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

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.54 kg / 3.40 lbs
1540.0 g / 15.1 N
1 mm Stal (~0.2) 1.16 kg / 2.56 lbs
1162.0 g / 11.4 N
2 mm Stal (~0.2) 0.84 kg / 1.85 lbs
840.0 g / 8.2 N
3 mm Stal (~0.2) 0.59 kg / 1.30 lbs
590.0 g / 5.8 N
5 mm Stal (~0.2) 0.28 kg / 0.61 lbs
278.0 g / 2.7 N
10 mm Stal (~0.2) 0.04 kg / 0.10 lbs
44.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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: Wall mounting (sliding) - vertical pull
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 lbs
2310.0 g / 22.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.54 kg / 3.40 lbs
1540.0 g / 15.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.77 kg / 1.70 lbs
770.0 g / 7.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.85 kg / 8.49 lbs
3850.0 g / 37.8 N

Table 4: Steel thickness (saturation) - power losses
MW 15x10 / N38

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

Table 5: Thermal stability (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 lbs
7700.0 g / 75.5 N
OK
40 °C -2.2% 7.53 kg / 16.60 lbs
7530.6 g / 73.9 N
OK
60 °C -4.4% 7.36 kg / 16.23 lbs
7361.2 g / 72.2 N
OK
80 °C -6.6% 7.19 kg / 15.86 lbs
7191.8 g / 70.6 N
100 °C -28.8% 5.48 kg / 12.09 lbs
5482.4 g / 53.8 N

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

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

Table 7: Hazards (implants) - precautionary measures
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
Mechanical watch 20 Gs (2.0 mT) 5.5 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Car key 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: Coating parameters (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 (Flux)
MW 15x10 / N38

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

Table 11: Underwater work (magnet fishing)
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Warning: On a vertical wall, the magnet retains only a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Thermal stability

*For N38 grade, the safety 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 specification and ecology
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
Measurement Calculator
Pulling force

Field Strength

Other deals

This product is an incredibly powerful rod magnet, composed of modern NdFeB material, which, with dimensions of Ø15x10 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 7.70 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects 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 filters, where field concentration on a small surface counts. Thanks to the pull force of 75.55 N with a weight of only 13.25 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering an optimal price-to-power ratio 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.
The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 10 mm. The key parameter here is the holding force amounting to approximately 7.70 kg (force ~75.55 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Strengths

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • Their power is durable, and after approximately ten years it drops only by ~1% (theoretically),
  • They retain their magnetic properties even under external field action,
  • The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the ability of flexible forming and adaptation to custom projects, NdFeB magnets can be produced in a variety of geometric configurations, which increases their versatility,
  • Huge importance in future technologies – they find application in HDD drives, brushless drives, advanced medical instruments, as well as technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also raises their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We recommend a housing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. Additionally, tiny parts of these products are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat it depends on?

The specified lifting capacity represents the peak performance, measured under laboratory conditions, specifically:
  • using a plate made of mild steel, acting as a magnetic yoke
  • with a cross-section no less than 10 mm
  • characterized by lack of roughness
  • under conditions of ideal adhesion (metal-to-metal)
  • under axial force vector (90-degree angle)
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

In real-world applications, the actual holding force results from a number of factors, presented from crucial:
  • Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Warnings
Electronic devices

Device Safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, medical aids, mechanical watches).

Do not underestimate power

Be careful. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can react.

Heat sensitivity

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Allergic reactions

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If you have an allergy, prevent direct skin contact and choose versions in plastic housing.

Keep away from children

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are very dangerous.

Impact on smartphones

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Mechanical processing

Machining of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Hand protection

Large magnets can break fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Magnets are brittle

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets leads to them cracking into shards.

Implant safety

People with a pacemaker should maintain an absolute distance from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Warning! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98