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MW 24x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010048

GTIN/EAN: 5906301810476

5.00

Diameter Ø

24 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

20.36 g

Magnetization Direction

↑ axial

Load capacity

9.98 kg / 97.88 N

Magnetic Induction

277.18 mT / 2772 Gs

Coating

[Zn] Zinc

see technical data »

5.10 ZŁ with VAT / pcs + price for transport

4.15 ZŁ net + 23% VAT / pcs

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Technical - MW 24x6 / N38 - cylindrical magnet

Specification / characteristics - MW 24x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010048
GTIN/EAN 5906301810476
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 24 mm [±0,1 mm]
Height 6 mm [±0,1 mm]
Weight 20.36 g
Magnetization Direction ↑ axial
Load capacity ~ ? 9.98 kg / 97.88 N
Magnetic Induction ~ ? 277.18 mT / 2772 Gs
Coating [Zn] Zinc
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 24x6 / 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 product - report

The following information constitute the outcome of a mathematical analysis. Results are based on algorithms for the material Nd2Fe14B. Real-world parameters may differ. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MW 24x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2771 Gs
277.1 mT
 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
 medium risk
1 mm 2609 Gs
260.9 mT
 8.85 kg / 19.50 pounds
8846.4 g / 86.8 N
 medium risk
2 mm 2420 Gs
242.0 mT
 7.61 kg / 16.78 pounds
7609.6 g / 74.7 N
 medium risk
3 mm 2216 Gs
221.6 mT
 6.38 kg / 14.07 pounds
6383.0 g / 62.6 N
 medium risk
5 mm 1805 Gs
180.5 mT
 4.23 kg / 9.33 pounds
4233.2 g / 41.5 N
 medium risk
10 mm 991 Gs
99.1 mT
 1.28 kg / 2.81 pounds
1275.9 g / 12.5 N
 safe
15 mm 542 Gs
54.2 mT
 0.38 kg / 0.84 pounds
381.4 g / 3.7 N
 safe
20 mm 313 Gs
31.3 mT
 0.13 kg / 0.28 pounds
127.2 g / 1.2 N
 safe
30 mm 125 Gs
12.5 mT
 0.02 kg / 0.04 pounds
20.4 g / 0.2 N
 safe
50 mm 34 Gs
3.4 mT
 0.00 kg / 0.00 pounds
1.5 g / 0.0 N
 safe
Magnetic force weakens sharply with every mm of spacing. Remember that even a microscopic distance (e.g., contamination, varnish, dust) strongly diminishes the holding power. Magnetic products operate strongest at the point of direct contact; air break drastically cuts the power. See how quickly the pull force drop, when the magnet does not touch tightly to the metal substrate. When designing the assembly, avoid redundant distances.

Table 2: Shear hold (vertical surface)
MW 24x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.00 kg / 4.40 pounds
1996.0 g / 19.6 N
1 mm Stal (~0.2) 1.77 kg / 3.90 pounds
1770.0 g / 17.4 N
2 mm Stal (~0.2) 1.52 kg / 3.36 pounds
1522.0 g / 14.9 N
3 mm Stal (~0.2) 1.28 kg / 2.81 pounds
1276.0 g / 12.5 N
5 mm Stal (~0.2) 0.85 kg / 1.87 pounds
846.0 g / 8.3 N
10 mm Stal (~0.2) 0.26 kg / 0.56 pounds
256.0 g / 2.5 N
15 mm Stal (~0.2) 0.08 kg / 0.17 pounds
76.0 g / 0.7 N
20 mm Stal (~0.2) 0.03 kg / 0.06 pounds
26.0 g / 0.3 N
30 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below calculates the theoretical shear load required to cause the sliding of the magnet down along a upright steel plate (assuming standard friction coefficient). This value is relative to the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 24x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.99 kg / 6.60 pounds
2994.0 g / 29.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.00 kg / 4.40 pounds
1996.0 g / 19.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.00 kg / 2.20 pounds
998.0 g / 9.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.99 kg / 11.00 pounds
4990.0 g / 49.0 N
When placing a element on a upright plane (e.g., a car body), it you can count on only about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient mean that magnets slide down faster than they pull off. Planning a wall mount? Note that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the element will slide down under a significantly smaller load. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MW 24x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 1.00 kg / 2.20 pounds
998.0 g / 9.8 N
1 mm
25%
 2.50 kg / 5.50 pounds
2495.0 g / 24.5 N
2 mm
50%
 4.99 kg / 11.00 pounds
4990.0 g / 49.0 N
3 mm
75%
 7.49 kg / 16.50 pounds
7485.0 g / 73.4 N
5 mm
100%
 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
10 mm
100%
 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
11 mm
100%
 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
12 mm
100%
 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
A thin metal plate cannot focus the full magnetic flux, which wastes potential of the holder. If you mount a strong magnet to a thin surface, the magnetism will pass right through and the attraction force will be weaker. To utilize the maximum of this neodymium's potential, you need a suitably thick backing of steel. The saturation phenomenon causes that on delicate walls (e.g., appliance housings), the magnet shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 24x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
 OK
40 °C -2.2% 9.76 kg / 21.52 pounds
9760.4 g / 95.7 N
 OK
60 °C -4.4% 9.54 kg / 21.03 pounds
9540.9 g / 93.6 N
80 °C -6.6% 9.32 kg / 20.55 pounds
9321.3 g / 91.4 N
100 °C -28.8% 7.11 kg / 15.67 pounds
7105.8 g / 69.7 N
Ordinary NdFeB products lose power above the temperature limit. Watch out for overheating – excessive heat can permanently demagnetize this product. As the temperature rises, the magnet's power briefly drops. Do not use this product close to heaters higher than its operating temperature limit. Exceeding the critical threshold will cause permanent loss of magnetic properties.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. Red status in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 24x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 21.42 kg / 47.22 pounds
4 381 Gs
3.21 kg / 7.08 pounds
3213 g / 31.5 N
 N/A
1 mm 20.25 kg / 44.65 pounds
5 390 Gs
3.04 kg / 6.70 pounds
3038 g / 29.8 N
 18.23 kg / 40.19 pounds
~0 Gs
2 mm 18.99 kg / 41.86 pounds
5 218 Gs
2.85 kg / 6.28 pounds
2848 g / 27.9 N
 17.09 kg / 37.67 pounds
~0 Gs
3 mm 17.67 kg / 38.95 pounds
5 034 Gs
2.65 kg / 5.84 pounds
2650 g / 26.0 N
 15.90 kg / 35.06 pounds
~0 Gs
5 mm 15.00 kg / 33.07 pounds
4 638 Gs
2.25 kg / 4.96 pounds
2250 g / 22.1 N
 13.50 kg / 29.76 pounds
~0 Gs
10 mm 9.09 kg / 20.03 pounds
3 610 Gs
1.36 kg / 3.00 pounds
1363 g / 13.4 N
 8.18 kg / 18.03 pounds
~0 Gs
20 mm 2.74 kg / 6.04 pounds
1 982 Gs
0.41 kg / 0.91 pounds
411 g / 4.0 N
 2.46 kg / 5.43 pounds
~0 Gs
50 mm 0.10 kg / 0.23 pounds
385 Gs
0.02 kg / 0.03 pounds
15 g / 0.2 N
 0.09 kg / 0.21 pounds
~0 Gs
60 mm 0.04 kg / 0.10 pounds
251 Gs
0.01 kg / 0.01 pounds
7 g / 0.1 N
 0.04 kg / 0.09 pounds
~0 Gs
70 mm 0.02 kg / 0.04 pounds
171 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
80 mm 0.01 kg / 0.02 pounds
121 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.02 pounds
~0 Gs
90 mm 0.01 kg / 0.01 pounds
89 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.01 pounds
67 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. Such a system of two magnets produces a massive flux and a wider radius of action. Want to build a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the collision energy is huge. The levitation is marginally weaker than the attraction, but still significant.
*The magnetic induction between like poles drops to ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Important: Figures refer to friction force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MW 24x6 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.0 cm
Hearing aid 10 Gs (1.0 mT) 8.0 cm
Timepiece 20 Gs (2.0 mT) 6.5 cm
Mobile device 40 Gs (4.0 mT) 5.0 cm
Remote 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
A strong magnetic field poses a serious hazard to electronics as well as pacemakers. These NdFeB products produce a field that prevents correct functioning of digital equipment. Notice: the invisible magnetic field acts through matter and plastic. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 24x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.05 km/h
(6.68 m/s)
 0.45 J
30 mm 38.72 km/h
(10.76 m/s)
 1.18 J
50 mm 49.93 km/h
(13.87 m/s)
 1.96 J
100 mm 70.61 km/h
(19.61 m/s)
 3.92 J
Magnetic elements are delicate – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or injury to fingers. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Corrosion resistance
MW 24x6 / N38

Technical parameter Value / Description
Coating type [Zn] Zinc
Layer structure Zn (Zinc)
Layer thickness 8-15 µm
Salt spray test (SST) ? 48 h
Recommended environment Indoors / Garage
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Pc)
MW 24x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 13 932 Mx 139.3 µWb
Pc Coefficient 0.35 Low (Flat)
Total magnetic flux passing through the magnet pole. Essential parameter in coil applications as well as sensors. Pc value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 24x6 / N38

Environment Effective steel pull Effect
Air (land) 9.98 kg Standard
Water (riverbed) 11.43 kg
(+1.45 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Wall mount (shear)

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

2. Steel thickness impact

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35

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%
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: 010048-2026
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This product is an incredibly powerful cylinder magnet, produced from modern NdFeB material, which, with dimensions of Ø24x6 mm, guarantees maximum efficiency. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 9.98 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 97.88 N with a weight of only 20.36 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 24.1 mm) using epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for 90% 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 (Ø24x6), 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 24 mm and height 6 mm. The value of 97.88 N means that the magnet is capable of holding a weight many times exceeding its own mass of 20.36 g. The product has a [NiCuNi] coating, which protects the surface 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 24 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 diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Apart from their notable power, neodymium magnets have these key benefits:
  • They do not lose power, even over around ten years – the drop in lifting capacity is only ~1% (according to tests),
  • They show high resistance to demagnetization induced by external magnetic fields,
  • A magnet with a metallic nickel surface has better aesthetics,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to freedom in designing and the ability to customize to unusual requirements,
  • Universal use in modern industrial fields – they are utilized in computer drives, motor assemblies, medical devices, also other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Weaknesses

Characteristics of disadvantages of neodymium magnets: application proposals
  • At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and 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
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing threads and complicated forms in magnets, we recommend using casing - magnetic holder.
  • Health risk related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

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

The declared magnet strength refers to the maximum value, obtained under optimal environment, namely:
  • on a block made of structural steel, optimally conducting the magnetic field
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a surface perfectly flat
  • with direct contact (no impurities)
  • for force applied at a right angle (in the magnet axis)
  • in neutral thermal conditions

Determinants of practical lifting force of a magnet

Holding efficiency impacted by working environment parameters, such as (from priority):
  • Air gap (betwixt the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or dirt).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
  • Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Warnings
Life threat

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Keep away from electronics

GPS units and smartphones are highly sensitive to magnetic fields. Direct contact with a strong magnet can ruin the sensors in your phone.

Product not for children

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep away from kids and pets.

Warning for allergy sufferers

Certain individuals experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling might lead to a rash. We suggest wear safety gloves.

Physical harm

Pinching hazard: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.

Eye protection

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Safe distance

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Handling guide

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

Do not overheat magnets

Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.

Machining danger

Fire warning: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.

Danger! Want to know more? Read our article: Are neodymium magnets dangerous?