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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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Physical properties - 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

Engineering modeling of the product - report

The following values are the result of a physical simulation. Results rely on algorithms for the material Nd2Fe14B. Actual performance may deviate from the simulation results. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs distance) - 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 pounds
440.0 g / 4.3 N
safe
1 mm 778 Gs
77.8 mT
0.40 kg / 0.88 pounds
397.0 g / 3.9 N
safe
2 mm 705 Gs
70.5 mT
0.33 kg / 0.72 pounds
326.0 g / 3.2 N
safe
3 mm 615 Gs
61.5 mT
0.25 kg / 0.55 pounds
248.0 g / 2.4 N
safe
5 mm 434 Gs
43.4 mT
0.12 kg / 0.27 pounds
123.5 g / 1.2 N
safe
10 mm 163 Gs
16.3 mT
0.02 kg / 0.04 pounds
17.3 g / 0.2 N
safe
15 mm 68 Gs
6.8 mT
0.00 kg / 0.01 pounds
3.1 g / 0.0 N
safe
20 mm 34 Gs
3.4 mT
0.00 kg / 0.00 pounds
0.7 g / 0.0 N
safe
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

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 pounds
88.0 g / 0.9 N
1 mm Stal (~0.2) 0.08 kg / 0.18 pounds
80.0 g / 0.8 N
2 mm Stal (~0.2) 0.07 kg / 0.15 pounds
66.0 g / 0.6 N
3 mm Stal (~0.2) 0.05 kg / 0.11 pounds
50.0 g / 0.5 N
5 mm Stal (~0.2) 0.02 kg / 0.05 pounds
24.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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: Wall mounting (shearing) - vertical pull
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 pounds
132.0 g / 1.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.09 kg / 0.19 pounds
88.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.10 pounds
44.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.22 kg / 0.49 pounds
220.0 g / 2.2 N

Table 4: Material efficiency (saturation) - 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 pounds
44.0 g / 0.4 N
1 mm
25%
0.11 kg / 0.24 pounds
110.0 g / 1.1 N
2 mm
50%
0.22 kg / 0.49 pounds
220.0 g / 2.2 N
3 mm
75%
0.33 kg / 0.73 pounds
330.0 g / 3.2 N
5 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
10 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
11 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
12 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N

Table 5: Working in heat (material behavior) - resistance threshold
MW 15x1 / N38

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

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

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.73 kg / 1.61 pounds
1 597 Gs
0.11 kg / 0.24 pounds
110 g / 1.1 N
N/A
1 mm 0.70 kg / 1.55 pounds
1 607 Gs
0.11 kg / 0.23 pounds
106 g / 1.0 N
0.63 kg / 1.40 pounds
~0 Gs
2 mm 0.66 kg / 1.45 pounds
1 556 Gs
0.10 kg / 0.22 pounds
99 g / 1.0 N
0.59 kg / 1.31 pounds
~0 Gs
3 mm 0.60 kg / 1.33 pounds
1 489 Gs
0.09 kg / 0.20 pounds
91 g / 0.9 N
0.54 kg / 1.20 pounds
~0 Gs
5 mm 0.48 kg / 1.05 pounds
1 323 Gs
0.07 kg / 0.16 pounds
71 g / 0.7 N
0.43 kg / 0.95 pounds
~0 Gs
10 mm 0.21 kg / 0.45 pounds
868 Gs
0.03 kg / 0.07 pounds
31 g / 0.3 N
0.18 kg / 0.41 pounds
~0 Gs
20 mm 0.03 kg / 0.06 pounds
325 Gs
0.00 kg / 0.01 pounds
4 g / 0.0 N
0.03 kg / 0.06 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
37 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
23 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
15 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
10 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
7 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
5 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
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
Mobile device 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: Construction 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: Submerged application
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains just ~20% of its nominal pull.

2. Plate thickness effect

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

3. Temperature resistance

*For N38 grade, 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
Elemental analysis
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%
Ecology and recycling (GPSR)
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
Magnet Unit Converter
Pulling force

Magnetic Induction

See also products

The offered product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø15x1 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.44 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 4.29 N with a weight of only 1.33 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 15.1 mm) using epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for 90% 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 (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 lifting capacity 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 protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 1 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.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Besides their remarkable strength, neodymium magnets offer the following advantages:
  • Their strength is durable, and after approximately 10 years it drops only by ~1% (theoretically),
  • They maintain their magnetic properties even under close interference source,
  • By covering with a smooth coating of nickel, the element presents an aesthetic look,
  • The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of accurate shaping and optimizing to defined requirements,
  • Versatile presence in innovative solutions – they are commonly used in computer drives, brushless drives, diagnostic systems, and other advanced devices.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. 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 experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating threads and complex forms in magnets, we recommend using casing - magnetic mount.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical when they are in the body.
  • Due to complex production process, their price exceeds standard values,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Holding force of 0.44 kg is a result of laboratory testing performed under the following configuration:
  • using a base made of low-carbon steel, serving as a circuit closing element
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in temp. approx. 20°C

Lifting capacity in real conditions – factors

It is worth knowing that the magnet holding may be lower depending on elements below, starting with the most relevant:
  • Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the load capacity.

Precautions when working with NdFeB magnets
Magnets are brittle

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Immense force

Handle magnets consciously. Their immense force can surprise even experienced users. Stay alert and respect their force.

Do not overheat magnets

Do not overheat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Health Danger

Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Magnetic interference

An intense magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.

Mechanical processing

Powder produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Sensitization to coating

Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands and select encased magnets.

Pinching danger

Big blocks can break fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.

Safe distance

Do not bring magnets close to a purse, laptop, or screen. The magnetism can destroy these devices and erase data from cards.

Adults only

Adult use only. Small elements can be swallowed, leading to severe trauma. Keep away from kids and pets.

Danger! 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