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MW 6x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010094

GTIN/EAN: 5906301810933

5.00

Diameter Ø

6 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

1.27 g

Magnetization Direction

↑ axial

Load capacity

1.14 kg / 11.18 N

Magnetic Induction

553.38 mT / 5534 Gs

Coating

[NiCuNi] Nickel

0.677 with VAT / pcs + price for transport

0.550 ZŁ net + 23% VAT / pcs

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Strength as well as structure of magnetic components can be tested using our force calculator.

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Detailed specifications MW 6x6 / N38 - cylindrical magnet

Specification / characteristics - MW 6x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010094
GTIN/EAN 5906301810933
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 6 mm [±0,1 mm]
Height 6 mm [±0,1 mm]
Weight 1.27 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.14 kg / 11.18 N
Magnetic Induction ~ ? 553.38 mT / 5534 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 6x6 / 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 product - report

Presented data constitute the direct effect of a mathematical simulation. Results were calculated on models for the material Nd2Fe14B. Operational conditions may deviate from the simulation results. Use these data as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - power drop
MW 6x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg) Risk Status
0 mm 5527 Gs
552.7 mT
1.14 kg / 1140.0 g
11.2 N
low risk
1 mm 3738 Gs
373.8 mT
0.52 kg / 521.5 g
5.1 N
low risk
2 mm 2366 Gs
236.6 mT
0.21 kg / 209.0 g
2.0 N
low risk
3 mm 1498 Gs
149.8 mT
0.08 kg / 83.7 g
0.8 N
low risk
5 mm 665 Gs
66.5 mT
0.02 kg / 16.5 g
0.2 N
low risk
10 mm 155 Gs
15.5 mT
0.00 kg / 0.9 g
0.0 N
low risk
15 mm 58 Gs
5.8 mT
0.00 kg / 0.1 g
0.0 N
low risk
20 mm 28 Gs
2.8 mT
0.00 kg / 0.0 g
0.0 N
low risk
30 mm 9 Gs
0.9 mT
0.00 kg / 0.0 g
0.0 N
low risk
50 mm 2 Gs
0.2 mT
0.00 kg / 0.0 g
0.0 N
low risk

Table 2: Sliding load (vertical surface)
MW 6x6 / N38

Distance (mm) Friction coefficient Pull Force (kg)
0 mm Stal (~0.2) 0.23 kg / 228.0 g
2.2 N
1 mm Stal (~0.2) 0.10 kg / 104.0 g
1.0 N
2 mm Stal (~0.2) 0.04 kg / 42.0 g
0.4 N
3 mm Stal (~0.2) 0.02 kg / 16.0 g
0.2 N
5 mm Stal (~0.2) 0.00 kg / 4.0 g
0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 6x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.34 kg / 342.0 g
3.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.23 kg / 228.0 g
2.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.11 kg / 114.0 g
1.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.57 kg / 570.0 g
5.6 N

Table 4: Material efficiency (saturation) - power losses
MW 6x6 / N38

Steel thickness (mm) % power Real pull force (kg)
0.5 mm
10%
0.11 kg / 114.0 g
1.1 N
1 mm
25%
0.29 kg / 285.0 g
2.8 N
2 mm
50%
0.57 kg / 570.0 g
5.6 N
5 mm
100%
1.14 kg / 1140.0 g
11.2 N
10 mm
100%
1.14 kg / 1140.0 g
11.2 N

Table 5: Working in heat (material behavior) - power drop
MW 6x6 / N38

Ambient temp. (°C) Power loss Remaining pull Status
20 °C 0.0% 1.14 kg / 1140.0 g
11.2 N
OK
40 °C -2.2% 1.11 kg / 1114.9 g
10.9 N
OK
60 °C -4.4% 1.09 kg / 1089.8 g
10.7 N
OK
80 °C -6.6% 1.06 kg / 1064.8 g
10.4 N
100 °C -28.8% 0.81 kg / 811.7 g
8.0 N

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 6x6 / N38

Gap (mm) Attraction (kg) (N-S) Repulsion (kg) (N-N)
0 mm 5.32 kg / 5324 g
52.2 N
5 995 Gs
N/A
1 mm 3.70 kg / 3705 g
36.3 N
9 220 Gs
3.33 kg / 3334 g
32.7 N
~0 Gs
2 mm 2.44 kg / 2436 g
23.9 N
7 476 Gs
2.19 kg / 2192 g
21.5 N
~0 Gs
3 mm 1.55 kg / 1552 g
15.2 N
5 968 Gs
1.40 kg / 1397 g
13.7 N
~0 Gs
5 mm 0.61 kg / 614 g
6.0 N
3 755 Gs
0.55 kg / 553 g
5.4 N
~0 Gs
10 mm 0.08 kg / 77 g
0.8 N
1 330 Gs
0.07 kg / 69 g
0.7 N
~0 Gs
20 mm 0.00 kg / 4 g
0.0 N
311 Gs
0.00 kg / 0 g
0.0 N
~0 Gs
50 mm 0.00 kg / 0 g
0.0 N
31 Gs
0.00 kg / 0 g
0.0 N
~0 Gs

Table 7: Protective zones (electronics) - warnings
MW 6x6 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.0 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) 1.0 cm

Table 8: Dynamics (kinetic energy) - warning
MW 6x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 30.23 km/h
(8.40 m/s)
0.04 J
30 mm 52.34 km/h
(14.54 m/s)
0.13 J
50 mm 67.56 km/h
(18.77 m/s)
0.22 J
100 mm 95.55 km/h
(26.54 m/s)
0.45 J

Table 9: Coating parameters (durability)
MW 6x6 / 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 (Flux)
MW 6x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 613 Mx 16.1 µWb
Pc Coefficient 0.89 High (Stable)

Table 11: Submerged application
MW 6x6 / N38

Environment Effective steel pull Effect
Air (land) 1.14 kg Standard
Water (riverbed) 1.31 kg
(+0.17 kg Buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Vertical hold

*Caution: On a vertical surface, the magnet retains merely ~20% of its perpendicular strength.

2. Steel saturation

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

3. Power loss vs temp

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89

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.

Engineering data and GPSR
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%
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: 010094-2025
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Magnet pull force

Field Strength

Other products

The offered product is a very strong cylinder magnet, manufactured from durable NdFeB material, which, with dimensions of Ø6x6 mm, guarantees optimal power. The MW 6x6 / N38 model boasts an accuracy of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.14 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its triple-layer 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 generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 11.18 N with a weight of only 1.27 g, this rod 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 immediate cracking of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø6x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø6x6 mm, which, at a weight of 1.27 g, makes it an element with impressive magnetic energy density. The value of 11.18 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.27 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 6 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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.

Pros and cons of rare earth magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose strength, even over approximately 10 years – the drop in lifting capacity is only ~1% (based on measurements),
  • They feature excellent resistance to weakening of magnetic properties when exposed to opposing magnetic fields,
  • A magnet with a smooth silver surface has an effective appearance,
  • Magnets are characterized by extremely high magnetic induction on the outer side,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Thanks to the possibility of accurate shaping and adaptation to specialized solutions, neodymium magnets can be created in a broad palette of forms and dimensions, which increases their versatility,
  • Wide application in high-tech industry – they serve a role in data components, drive modules, medical devices, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited possibility of making nuts in the magnet and complicated shapes - preferred is casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, small components of these magnets are able to complicate diagnosis medical when they are in 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 affects it?

Breakaway force was determined for ideal contact conditions, taking into account:
  • on a plate made of mild steel, optimally conducting the magnetic field
  • with a thickness minimum 10 mm
  • with an ground contact surface
  • with zero gap (no impurities)
  • under vertical force direction (90-degree angle)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

Bear in mind that the application force may be lower subject to elements below, starting with the most relevant:
  • Air gap (betwixt the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick steel does not accept the full field, causing part of the power to be wasted into the air.
  • Plate material – mild steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with NdFeB magnets
Keep away from electronics

An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.

Demagnetization risk

Control the heat. Exposing the magnet to high heat will permanently weaken its properties and strength.

Sensitization to coating

It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and select versions in plastic housing.

Shattering risk

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Pacemakers

Warning for patients: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Data carriers

Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).

Respect the power

Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can move away.

Adults only

Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are very dangerous.

Serious injuries

Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Mechanical processing

Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Caution! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98