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MW 10x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010011

GTIN/EAN: 5906301810100

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

2.95 g

Magnetization Direction

↑ axial

Load capacity

3.19 kg / 31.28 N

Magnetic Induction

437.91 mT / 4379 Gs

Coating

[NiCuNi] Nickel

check specifications »

1.513 ZŁ with VAT / pcs + price for transport

1.230 ZŁ net + 23% VAT / pcs

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Product card - MW 10x5 / N38 - cylindrical magnet

Specification / characteristics - MW 10x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010011
GTIN/EAN 5906301810100
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 10 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 2.95 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.19 kg / 31.28 N
Magnetic Induction ~ ? 437.91 mT / 4379 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x5 / 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

Physical analysis of the assembly - technical parameters

The following values constitute the direct effect of a physical simulation. Results are based on algorithms for the material Nd2Fe14B. Real-world performance may differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
MW 10x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4376 Gs
437.6 mT
 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
 medium risk
1 mm 3547 Gs
354.7 mT
 2.10 kg / 4.62 pounds
2095.9 g / 20.6 N
 medium risk
2 mm 2743 Gs
274.3 mT
 1.25 kg / 2.76 pounds
1252.9 g / 12.3 N
 low risk
3 mm 2068 Gs
206.8 mT
 0.71 kg / 1.57 pounds
712.2 g / 7.0 N
 low risk
5 mm 1161 Gs
116.1 mT
 0.22 kg / 0.50 pounds
224.7 g / 2.2 N
 low risk
10 mm 336 Gs
33.6 mT
 0.02 kg / 0.04 pounds
18.8 g / 0.2 N
 low risk
15 mm 133 Gs
13.3 mT
 0.00 kg / 0.01 pounds
2.9 g / 0.0 N
 low risk
20 mm 65 Gs
6.5 mT
 0.00 kg / 0.00 pounds
0.7 g / 0.0 N
 low risk
30 mm 22 Gs
2.2 mT
 0.00 kg / 0.00 pounds
0.1 g / 0.0 N
 low risk
50 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
Grip strength weakens sharply with every subsequent millimeter of spacing. Remember that even the smallest gap (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Magnetic products work optimally during direct contact; air break weakens the force. See how rapidly the pull force drop, when the magnet does not adhere directly to the steel surface. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Sliding hold (wall)
MW 10x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.64 kg / 1.41 pounds
638.0 g / 6.3 N
1 mm Stal (~0.2) 0.42 kg / 0.93 pounds
420.0 g / 4.1 N
2 mm Stal (~0.2) 0.25 kg / 0.55 pounds
250.0 g / 2.5 N
3 mm Stal (~0.2) 0.14 kg / 0.31 pounds
142.0 g / 1.4 N
5 mm Stal (~0.2) 0.04 kg / 0.10 pounds
44.0 g / 0.4 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
The following data shows the approximate shear load required to start the sliding of the magnet vertically against a upright steel plate (assuming standard friction coefficient). This value is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 10x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.96 kg / 2.11 pounds
957.0 g / 9.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.64 kg / 1.41 pounds
638.0 g / 6.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.32 kg / 0.70 pounds
319.0 g / 3.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.60 kg / 3.52 pounds
1595.0 g / 15.6 N
When placing a holder on a upright plane (e.g., a fridge), it you can count on only approx. 20%-30% of its nominal power. Gravitational force as well as a weak degree of grip influence the fact that magnets move down faster than they pop off the substrate. Want to create a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will slide down under a much lighter load. Application of an anti-slip pad can significantly increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.32 kg / 0.70 pounds
319.0 g / 3.1 N
1 mm
25%
 0.80 kg / 1.76 pounds
797.5 g / 7.8 N
2 mm
50%
 1.60 kg / 3.52 pounds
1595.0 g / 15.6 N
3 mm
75%
 2.39 kg / 5.27 pounds
2392.5 g / 23.5 N
5 mm
100%
 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
10 mm
100%
 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
11 mm
100%
 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
12 mm
100%
 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
A thin sheet is incapable of conduct the full magnetic flux, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the flux will pass right through and the holding will be smaller. To squeeze 100% of this magnet's potential, you need a suitably thick backing of metal. The saturation effect means that on thin elements (e.g., car bodies), the product holds weaker. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MW 10x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.19 kg / 7.03 pounds
3190.0 g / 31.3 N
 OK
40 °C -2.2% 3.12 kg / 6.88 pounds
3119.8 g / 30.6 N
 OK
60 °C -4.4% 3.05 kg / 6.72 pounds
3049.6 g / 29.9 N
80 °C -6.6% 2.98 kg / 6.57 pounds
2979.5 g / 29.2 N
100 °C -28.8% 2.27 kg / 5.01 pounds
2271.3 g / 22.3 N
Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Avoid high temperatures – high temperature can irreversibly demagnetize this magnet. With every degree above norm, the neodymium's force momentarily drops. Do not use this magnet in hot environments higher than its working range. Exceeding the critical threshold will lead to destruction of magnetism.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Flat magnets (pancake types) may lose charge permanently under lower heat stress than taller cylinders. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MW 10x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 9.27 kg / 20.44 pounds
5 534 Gs
1.39 kg / 3.07 pounds
1391 g / 13.6 N
 N/A
1 mm 7.63 kg / 16.83 pounds
7 941 Gs
1.15 kg / 2.52 pounds
1145 g / 11.2 N
 6.87 kg / 15.15 pounds
~0 Gs
2 mm 6.09 kg / 13.43 pounds
7 094 Gs
0.91 kg / 2.01 pounds
914 g / 9.0 N
 5.48 kg / 12.09 pounds
~0 Gs
3 mm 4.75 kg / 10.48 pounds
6 265 Gs
0.71 kg / 1.57 pounds
713 g / 7.0 N
 4.28 kg / 9.43 pounds
~0 Gs
5 mm 2.76 kg / 6.08 pounds
4 772 Gs
0.41 kg / 0.91 pounds
413 g / 4.1 N
 2.48 kg / 5.47 pounds
~0 Gs
10 mm 0.65 kg / 1.44 pounds
2 323 Gs
0.10 kg / 0.22 pounds
98 g / 1.0 N
 0.59 kg / 1.30 pounds
~0 Gs
20 mm 0.05 kg / 0.12 pounds
673 Gs
0.01 kg / 0.02 pounds
8 g / 0.1 N
 0.05 kg / 0.11 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
72 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
44 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
29 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
20 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
14 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
11 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets interact from a much further distance than a magnet and steel combination. The setup of magnet-to-magnet produces a massive flux and a larger range of performance. Want to build a strong closure? Apply two magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the pinch force is massive. The levitation is marginally weaker than the attraction, but still impressive.
*Flux density between like poles drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
Note: Results demonstrate shear force of two identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - precautionary measures
MW 10x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Mobile device 40 Gs (4.0 mT) 2.5 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Powerful magnet radiation is a large risk to IT equipment and pacemakers. These neodymiums generate a flux that prevents correct functioning of sensitive medical devices. Notice: the unseen radiation passes through tissues and housings. Increased vigilance must be exercised by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MW 10x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 33.29 km/h
(9.25 m/s)
 0.13 J
30 mm 57.44 km/h
(15.96 m/s)
 0.38 J
50 mm 74.16 km/h
(20.60 m/s)
 0.63 J
100 mm 104.87 km/h
(29.13 m/s)
 1.25 J
Neodymium magnets are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can destroy the magnet or injury to skin. Always hold the magnet during mounting 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 powerful specimens.

Table 9: Anti-corrosion coating durability
MW 10x5 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 10x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 489 Mx 34.9 µWb
Pc Coefficient 0.59 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data for generator designers and motors. Pc value determines the working geometry.

Table 11: Physics of underwater searching
MW 10x5 / N38

Environment Effective steel pull Effect
Air (land) 3.19 kg Standard
Water (riverbed) 3.65 kg
(+0.46 kg buoyancy gain)
+14.5%
Warning: 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. However, remember the water resistance when pulling the rope quickly.
1. Sliding resistance

*Caution: On a vertical surface, the magnet holds just ~20% of its nominal pull.

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, the critical 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
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: 010011-2026
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The offered product is an extremely powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø10x5 mm, guarantees optimal power. This specific item features a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 3.19 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 31.28 N with a weight of only 2.95 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 10.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø10x5), 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 Ø10x5 mm, which, at a weight of 2.95 g, makes it an element with impressive magnetic energy density. The value of 31.28 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.95 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 10 mm. 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.

Benefits

Besides their tremendous field intensity, neodymium magnets offer the following advantages:
  • They do not lose magnetism, even after approximately ten years – the drop in strength is only ~1% (according to tests),
  • They feature excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • A magnet with a smooth nickel surface has better aesthetics,
  • Magnets are characterized by exceptionally strong magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of precise modeling as well as modifying to concrete conditions,
  • Significant place in high-tech industry – they find application in hard drives, motor assemblies, diagnostic systems, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in small systems

Weaknesses

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited ability of making nuts in the magnet and complicated forms - preferred is casing - magnet mounting.
  • Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these products are able to disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

The specified lifting capacity represents the maximum value, obtained under laboratory conditions, specifically:
  • using a base made of mild steel, serving as a circuit closing element
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an ground touching surface
  • under conditions of ideal adhesion (metal-to-metal)
  • during detachment in a direction perpendicular to the plane
  • at temperature room level

What influences lifting capacity in practice

In practice, the actual holding force is determined by many variables, presented from most significant:
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) 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 significantly, often to levels of 20-30% of the maximum value.
  • Steel thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Metal type – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Surface condition – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

H&S for magnets
Machining danger

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

Serious injuries

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Adults only

Always store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are very dangerous.

Data carriers

Device Safety: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Respect the power

Use magnets with awareness. Their powerful strength can surprise even experienced users. Plan your moves and respect their power.

Operating temperature

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. Damage is permanent.

GPS Danger

A powerful magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Risk of cracking

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.

Life threat

Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Sensitization to coating

Certain individuals have a contact allergy to Ni, which is the standard coating for NdFeB magnets. Frequent touching might lead to a rash. We recommend use safety gloves.

Caution! Looking for details? Check our post: Are neodymium magnets dangerous?