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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

technical specifications »

0.677 ZŁ with VAT / pcs + price for transport

0.550 ZŁ net + 23% VAT / pcs

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Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Technical of the product - 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

Technical modeling of the magnet - technical parameters

These values are the outcome of a mathematical calculation. Results rely on models for the material Nd2Fe14B. Operational parameters may differ. Use these calculations as a reference point for designers.

Table 1: Static force (force vs gap) - interaction chart
MW 6x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5527 Gs
552.7 mT
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
 low risk
1 mm 3738 Gs
373.8 mT
 0.52 kg / 1.15 lbs
521.5 g / 5.1 N
 low risk
2 mm 2366 Gs
236.6 mT
 0.21 kg / 0.46 lbs
209.0 g / 2.0 N
 low risk
3 mm 1498 Gs
149.8 mT
 0.08 kg / 0.18 lbs
83.7 g / 0.8 N
 low risk
5 mm 665 Gs
66.5 mT
 0.02 kg / 0.04 lbs
16.5 g / 0.2 N
 low risk
10 mm 155 Gs
15.5 mT
 0.00 kg / 0.00 lbs
0.9 g / 0.0 N
 low risk
15 mm 58 Gs
5.8 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
20 mm 28 Gs
2.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
30 mm 9 Gs
0.9 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
50 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Magnetic force drops drastically per each millimeter of gap. Note that even the smallest gap (e.g., contamination, varnish, veneer) noticeably weakens the grip. Magnets hold optimally during direct contact; gap weakens the force. Notice how rapidly the pull force drop, when the product does not adhere tightly to the steel surface. When designing the mounting, eliminate redundant distances.

Table 2: Vertical hold (wall)
MW 6x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.23 kg / 0.50 lbs
228.0 g / 2.2 N
1 mm Stal (~0.2) 0.10 kg / 0.23 lbs
104.0 g / 1.0 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 / 0.01 lbs
4.0 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
This section indicates the theoretical force required to cause the sliding of the magnet downwards against a upright steel plate (assuming standard friction). The holding force depends on the distance between the magnet and the surface.

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

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.34 kg / 0.75 lbs
342.0 g / 3.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.23 kg / 0.50 lbs
228.0 g / 2.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.11 kg / 0.25 lbs
114.0 g / 1.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.57 kg / 1.26 lbs
570.0 g / 5.6 N
When hanging a holder on a upright wall (e.g., a car body), it you can count on just about 1/5 of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that products slide down faster than they pull off. Designing a hanger? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a significantly smaller load. Application of an anti-slip layer can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 6x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.11 kg / 0.25 lbs
114.0 g / 1.1 N
1 mm
25%
 0.29 kg / 0.63 lbs
285.0 g / 2.8 N
2 mm
50%
 0.57 kg / 1.26 lbs
570.0 g / 5.6 N
3 mm
75%
 0.86 kg / 1.88 lbs
855.0 g / 8.4 N
5 mm
100%
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
10 mm
100%
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
11 mm
100%
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
12 mm
100%
 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
A thin sheet is unable to absorb the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a thin surface, the flux will penetrate right through and the holding will be smaller. To utilize 100% of this magnet's potential, you need a suitably thick backing of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the product shows lower pull force. We advise picking the steel dimension from these parameters.

Table 5: Working in heat (stability) - thermal limit
MW 6x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
 OK
40 °C -2.2% 1.11 kg / 2.46 lbs
1114.9 g / 10.9 N
 OK
60 °C -4.4% 1.09 kg / 2.40 lbs
1089.8 g / 10.7 N
 OK
80 °C -6.6% 1.06 kg / 2.35 lbs
1064.8 g / 10.4 N
100 °C -28.8% 0.81 kg / 1.79 lbs
811.7 g / 8.0 N
Standard neodymium magnets change their properties strength above the temperature limit. Protect against heat – heat can permanently demagnetize this magnet. With increasing heat, the neodymium's force momentarily drops. Avoid using this magnet in hot environments higher than its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetism.
*Important note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) may lose charge permanently at lower temperatures than long magnets. The danger warning in the table signals permanent field degradation for this specific geometry.

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

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.32 kg / 11.74 lbs
5 995 Gs
0.80 kg / 1.76 lbs
799 g / 7.8 N
 N/A
1 mm 3.70 kg / 8.17 lbs
9 220 Gs
0.56 kg / 1.23 lbs
556 g / 5.5 N
 3.33 kg / 7.35 lbs
~0 Gs
2 mm 2.44 kg / 5.37 lbs
7 476 Gs
0.37 kg / 0.81 lbs
365 g / 3.6 N
 2.19 kg / 4.83 lbs
~0 Gs
3 mm 1.55 kg / 3.42 lbs
5 968 Gs
0.23 kg / 0.51 lbs
233 g / 2.3 N
 1.40 kg / 3.08 lbs
~0 Gs
5 mm 0.61 kg / 1.35 lbs
3 755 Gs
0.09 kg / 0.20 lbs
92 g / 0.9 N
 0.55 kg / 1.22 lbs
~0 Gs
10 mm 0.08 kg / 0.17 lbs
1 330 Gs
0.01 kg / 0.03 lbs
12 g / 0.1 N
 0.07 kg / 0.15 lbs
~0 Gs
20 mm 0.00 kg / 0.01 lbs
311 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
31 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
19 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
12 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
8 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
6 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
5 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel combination. The setup of two magnets generates a stronger field and a further horizon of operation. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the pinch force is massive. The levitation is a bit weaker than the attraction, but still impressive.
*Flux density for N-N configuration reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Estimates show friction force of dual same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
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
Mobile device 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
A strong magnetic field poses a serious hazard to IT equipment and medical implants. These NdFeB products generate a flux that prevents correct functioning of digital equipment. Remember: the invisible magnetic field penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
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
NdFeB products are delicate – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when working with large magnets.

Table 9: Surface protection spec
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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

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)
Flux value emitted by the pole surface. Key data in coil applications and motors. Pc value determines the working geometry.

Table 11: Physics of underwater searching
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%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.
1. Sliding resistance

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

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) severely reduces the holding force.

3. Heat tolerance

*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

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.

Engineering data and GPSR
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%
Sustainability
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: 010094-2026
Measurement Calculator
Force (pull)
Magnetic Induction
Simply populate a single box, and the calculator compute the rest instantly.

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The offered product is an exceptionally strong cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø6x6 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability 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 available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 11.18 N with a weight of only 1.27 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in automation, 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 operational stability. 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 available off-the-shelf 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 key parameter here is the holding force amounting to approximately 1.14 kg (force ~11.18 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 6 mm. 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 through the diameter if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:
  • They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They have excellent resistance to magnetic field loss when exposed to external fields,
  • Thanks to the glossy finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an aesthetic appearance,
  • Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
  • 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 versatility in forming and the capacity to modify to client solutions,
  • Fundamental importance in electronics industry – they serve a role in HDD drives, drive modules, precision medical tools, and complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • We suggest casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex shapes.
  • Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these products can disrupt the diagnostic process medical after entering the body.
  • With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Detachment force of the magnet in optimal conditions – what contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, assuming:
  • on a base made of mild steel, effectively closing the magnetic field
  • with a cross-section minimum 10 mm
  • characterized by lack of roughness
  • without any clearance between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • in neutral thermal conditions

Impact of factors on magnetic holding capacity in practice

In practice, the actual holding force results from a number of factors, listed from crucial:
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Steel grade – the best choice is high-permeability steel. Hardened steels may attract less.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
  • Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was checked 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 and the plate lowers the holding force.

Warnings
Safe operation

Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Medical interference

Individuals with a heart stimulator should maintain an large gap from magnets. The magnetism can disrupt the functioning of the implant.

Threat to electronics

Data protection: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Risk of cracking

Neodymium magnets are sintered ceramics, which means they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Metal Allergy

Some people experience a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Extended handling can result in a rash. It is best to wear safety gloves.

No play value

Absolutely keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are tragic.

Thermal limits

Control the heat. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Bodily injuries

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Fire warning

Machining of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Impact on smartphones

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

Danger! Details about hazards in the article: Safety of working with magnets.