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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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Technical specification - 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 simulation of the magnet - data

Presented data represent the result of a mathematical calculation. Values rely on models for the material Nd2Fe14B. Real-world parameters may differ. Please consider these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - interaction chart
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: Shear force (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: Wall mounting (sliding) - 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 (substrate influence) - 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 (stability) - 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 (attraction) - field range
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: Hazards (implants) - 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
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 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: Collisions (cracking risk) - 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: Corrosion resistance
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 (Pc)
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: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

*Note: On a vertical wall, the magnet holds just approx. 20-30% of its max power.

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 material, the max working temp 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
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%
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: 010094-2025
Magnet Unit Converter
Force (pull)

Magnetic Field

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The presented product is an extremely powerful rod magnet, made from advanced NdFeB material, which, with dimensions of Ø6x6 mm, guarantees the highest energy density. The MW 6x6 / N38 component features an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 1.14 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 11.18 N with a weight of only 1.27 g, this rod is indispensable in electronics and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use 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 do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are suitable 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 (Ø6x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 6 mm and height 6 mm. The key parameter here is the lifting capacity amounting to approximately 1.14 kg (force ~11.18 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 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. 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 as well as cons of rare earth magnets.

Strengths

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their strength is maintained, and after approximately ten years it drops only by ~1% (according to research),
  • They retain their magnetic properties even under close interference source,
  • A magnet with a smooth nickel surface has better aesthetics,
  • Magnetic induction on the top side of the magnet remains exceptional,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to the potential of accurate molding and customization to individualized solutions, NdFeB magnets can be manufactured in a variety of shapes and sizes, which expands the range of possible applications,
  • Huge importance in modern industrial fields – they find application in mass storage devices, motor assemblies, advanced medical instruments, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • At strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complex shapes.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these products can disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is relatively high,

Pull force analysis

Maximum lifting capacity of the magnetwhat affects it?

The declared magnet strength refers to the maximum value, obtained under optimal environment, namely:
  • using a plate made of mild steel, functioning as a ideal flux conductor
  • whose transverse dimension is min. 10 mm
  • with an ideally smooth touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

During everyday use, the actual holding force results from many variables, ranked from crucial:
  • Air gap (between the magnet and the metal), as even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, rust or debris).
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Material composition – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets
Allergic reactions

Some people have a contact allergy to nickel, which is the standard coating for NdFeB magnets. Prolonged contact might lead to an allergic reaction. We recommend use protective gloves.

Electronic hazard

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

Impact on smartphones

An intense magnetic field negatively affects the operation of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Implant safety

Patients with a ICD have to keep an large gap from magnets. The magnetic field can stop the operation of the implant.

Do not underestimate power

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Heat sensitivity

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

Dust is flammable

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

Material brittleness

Neodymium magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them cracking into small pieces.

No play value

Absolutely keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets clamping inside the body are very dangerous.

Bodily injuries

Large magnets can crush fingers in a fraction of a second. Never put your hand between two attracting surfaces.

Attention! Want to know more? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98