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MW 6x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010093

GTIN/EAN: 5906301810926

5.00

Diameter Ø

6 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

0.64 g

Magnetization Direction

↑ axial

Load capacity

1.15 kg / 11.23 N

Magnetic Induction

437.58 mT / 4376 Gs

Coating

[NiCuNi] Nickel

check technical specifications »

0.381 ZŁ with VAT / pcs + price for transport

0.310 ZŁ net + 23% VAT / pcs

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Technical data of the product - MW 6x3 / N38 - cylindrical magnet

Specification / characteristics - MW 6x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010093
GTIN/EAN 5906301810926
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 3 mm [±0,1 mm]
Weight 0.64 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.15 kg / 11.23 N
Magnetic Induction ~ ? 437.58 mT / 4376 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 6x3 / 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 values represent the result of a physical calculation. Results rely on models for the material Nd2Fe14B. Real-world performance might slightly differ. Use these calculations as a reference point during assembly planning.

Table 1: Static force (force vs gap) - characteristics
MW 6x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4371 Gs
437.1 mT
 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
 safe
1 mm 2999 Gs
299.9 mT
 0.54 kg / 1.19 LBS
541.6 g / 5.3 N
 safe
2 mm 1877 Gs
187.7 mT
 0.21 kg / 0.47 LBS
212.2 g / 2.1 N
 safe
3 mm 1161 Gs
116.1 mT
 0.08 kg / 0.18 LBS
81.2 g / 0.8 N
 safe
5 mm 489 Gs
48.9 mT
 0.01 kg / 0.03 LBS
14.4 g / 0.1 N
 safe
10 mm 103 Gs
10.3 mT
 0.00 kg / 0.00 LBS
0.6 g / 0.0 N
 safe
15 mm 36 Gs
3.6 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
20 mm 17 Gs
1.7 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
30 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Magnetic force drops sharply with every subsequent millimeter of distance. Keep in mind that even a microscopic distance (e.g., dirt, paint, rust) noticeably diminishes the holding power. Magnetic products work strongest during direct contact; distance kills the force. See how quickly the parameters fall, when the product does not touch tightly to the steel surface. When designing the assembly, discard additional spacers.

Table 2: Vertical capacity (wall)
MW 6x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.23 kg / 0.51 LBS
230.0 g / 2.3 N
1 mm Stal (~0.2) 0.11 kg / 0.24 LBS
108.0 g / 1.1 N
2 mm Stal (~0.2) 0.04 kg / 0.09 LBS
42.0 g / 0.4 N
3 mm Stal (~0.2) 0.02 kg / 0.04 LBS
16.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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
The table below presents the theoretical weight limit necessary to start the sliding of the magnet downwards against a upright metal surface (assuming standard friction coefficient). This parameter varies with the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 6x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.35 kg / 0.76 LBS
345.0 g / 3.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.23 kg / 0.51 LBS
230.0 g / 2.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.11 kg / 0.25 LBS
115.0 g / 1.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.58 kg / 1.27 LBS
575.0 g / 5.6 N
When mounting a holder on a vertical surface (e.g., a board), it you can count on barely about 1/5 of its maximum pull force. Gravity as well as a weak degree of grip mean that magnets move down faster than they detach. Want to create a hanger? Note that the shear force is much weaker than the maximum static pull force. On a slippery surface, the holder will slip down under a noticeably lighter weight. Utilizing a rubberized pad can significantly improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 6x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.11 kg / 0.25 LBS
115.0 g / 1.1 N
1 mm
25%
 0.29 kg / 0.63 LBS
287.5 g / 2.8 N
2 mm
50%
 0.58 kg / 1.27 LBS
575.0 g / 5.6 N
3 mm
75%
 0.86 kg / 1.90 LBS
862.5 g / 8.5 N
5 mm
100%
 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
10 mm
100%
 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
11 mm
100%
 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
12 mm
100%
 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
A thin sheet is not enough to focus the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a weak sheet, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you require a sufficiently solid backing of steel. The saturation phenomenon causes that on thin elements (e.g., car bodies), the product shows lower pull force. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 6x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.15 kg / 2.54 LBS
1150.0 g / 11.3 N
 OK
40 °C -2.2% 1.12 kg / 2.48 LBS
1124.7 g / 11.0 N
 OK
60 °C -4.4% 1.10 kg / 2.42 LBS
1099.4 g / 10.8 N
80 °C -6.6% 1.07 kg / 2.37 LBS
1074.1 g / 10.5 N
100 °C -28.8% 0.82 kg / 1.81 LBS
818.8 g / 8.0 N
Standard neodymium magnets lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this magnet. With every degree above norm, the neodymium's force temporarily lowers. Refrain from using this magnet close to heaters exceeding its operating temperature limit. Exceeding the critical threshold will cause irreversible degradation of magnetic properties.
*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (low Pc) may lose charge permanently under lower heat stress than long magnets. Red status in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 6x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.33 kg / 7.34 LBS
5 527 Gs
0.50 kg / 1.10 LBS
499 g / 4.9 N
 N/A
1 mm 2.37 kg / 5.23 LBS
7 376 Gs
0.36 kg / 0.78 LBS
356 g / 3.5 N
 2.13 kg / 4.70 LBS
~0 Gs
2 mm 1.57 kg / 3.46 LBS
5 999 Gs
0.24 kg / 0.52 LBS
235 g / 2.3 N
 1.41 kg / 3.11 LBS
~0 Gs
3 mm 0.99 kg / 2.19 LBS
4 772 Gs
0.15 kg / 0.33 LBS
149 g / 1.5 N
 0.89 kg / 1.97 LBS
~0 Gs
5 mm 0.38 kg / 0.83 LBS
2 948 Gs
0.06 kg / 0.13 LBS
57 g / 0.6 N
 0.34 kg / 0.75 LBS
~0 Gs
10 mm 0.04 kg / 0.09 LBS
978 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
 0.04 kg / 0.08 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
205 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
18 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
11 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
7 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
5 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
3 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
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products interact from a wider radius than a magnet and steel setup. Such a system of two magnets creates a more powerful interaction and a further horizon of action. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the impact force is massive. The repulsion force is a bit weaker than the attraction, but still significant.
*Flux density in repulsion mode reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
* Figures refer to shear force of a pair of matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - warnings
MW 6x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
A strong magnetic field poses a large risk to IT equipment and medical implants. These magnets produce a field that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field acts through matter and plastic. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MW 6x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 42.77 km/h
(11.88 m/s)
 0.05 J
30 mm 74.05 km/h
(20.57 m/s)
 0.14 J
50 mm 95.59 km/h
(26.55 m/s)
 0.23 J
100 mm 135.19 km/h
(37.55 m/s)
 0.45 J
NdFeB products are prone to chipping – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to fingers. Be sure to control the product during installation so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Wear eye protection when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 6x3 / 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)
The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 6x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 256 Mx 12.6 µWb
Pc Coefficient 0.59 Low (Flat)
Flux value passing through the pole surface. Essential parameter when building generators as well as sensors. Pc value defines the working geometry.

Table 11: Submerged application
MW 6x3 / N38

Environment Effective steel pull Effect
Air (land) 1.15 kg Standard
Water (riverbed) 1.32 kg
(+0.17 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.
1. Sliding resistance

*Warning: On a vertical wall, the magnet retains just a fraction of its nominal pull.

2. Plate thickness effect

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

3. Power loss vs temp

*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) = 0.59

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
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%
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: 010093-2026
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The presented product is an incredibly powerful cylinder magnet, manufactured from modern NdFeB material, which, with dimensions of Ø6x3 mm, guarantees optimal power. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 1.15 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 11.23 N with a weight of only 0.64 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, you must not use 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 high repeatability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø6x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø6x3 mm, which, at a weight of 0.64 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.15 kg (force ~11.23 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 3 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 diametrically if your project requires it.

Advantages and disadvantages of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
  • They have excellent resistance to magnetic field loss due to external magnetic sources,
  • Thanks to the elegant finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an aesthetic appearance,
  • The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to modularity in constructing and the capacity to modify to client solutions,
  • Significant place in modern technologies – they find application in hard drives, brushless drives, medical equipment, also multitasking production systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Problematic aspects of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
  • Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these devices are able to complicate diagnosis medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The force parameter is a measurement result performed under standard conditions:
  • using a sheet made of high-permeability steel, acting as a magnetic yoke
  • with a thickness no less than 10 mm
  • with an polished touching surface
  • under conditions of gap-free contact (surface-to-surface)
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

Real force impacted by working environment parameters, including (from most important):
  • Distance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin plate does not close the flux, causing part of the flux to be lost into the air.
  • Metal type – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Plate texture – ground elements ensure maximum contact, which improves force. Uneven metal weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet’s surface and the plate lowers the holding force.

Warnings
Maximum temperature

Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Safe operation

Handle with care. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.

Choking Hazard

Adult use only. Tiny parts pose a choking risk, causing intestinal necrosis. Keep out of reach of children and animals.

Bodily injuries

Big blocks can smash fingers in a fraction of a second. Do not put your hand between two strong magnets.

Eye protection

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Skin irritation risks

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness occurs, cease working with magnets and wear gloves.

Do not drill into magnets

Dust created during cutting of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Protect data

Avoid bringing magnets close to a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Keep away from electronics

Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.

Health Danger

Warning for patients: Strong magnetic fields affect electronics. Keep at least 30 cm distance or request help to work with the magnets.

Attention! Looking for details? Check our post: Why are neodymium magnets dangerous?