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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

5.10 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 magnet - technical parameters

Presented information constitute the direct effect of a mathematical simulation. Values are based on algorithms for the material Nd2Fe14B. Operational conditions might slightly differ. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
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 lbs
9980.0 g / 97.9 N
warning
1 mm 2609 Gs
260.9 mT
8.85 kg / 19.50 lbs
8846.4 g / 86.8 N
warning
2 mm 2420 Gs
242.0 mT
7.61 kg / 16.78 lbs
7609.6 g / 74.7 N
warning
3 mm 2216 Gs
221.6 mT
6.38 kg / 14.07 lbs
6383.0 g / 62.6 N
warning
5 mm 1805 Gs
180.5 mT
4.23 kg / 9.33 lbs
4233.2 g / 41.5 N
warning
10 mm 991 Gs
99.1 mT
1.28 kg / 2.81 lbs
1275.9 g / 12.5 N
low risk
15 mm 542 Gs
54.2 mT
0.38 kg / 0.84 lbs
381.4 g / 3.7 N
low risk
20 mm 313 Gs
31.3 mT
0.13 kg / 0.28 lbs
127.2 g / 1.2 N
low risk
30 mm 125 Gs
12.5 mT
0.02 kg / 0.04 lbs
20.4 g / 0.2 N
low risk
50 mm 34 Gs
3.4 mT
0.00 kg / 0.00 lbs
1.5 g / 0.0 N
low risk

Table 2: Shear capacity (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 lbs
1996.0 g / 19.6 N
1 mm Stal (~0.2) 1.77 kg / 3.90 lbs
1770.0 g / 17.4 N
2 mm Stal (~0.2) 1.52 kg / 3.36 lbs
1522.0 g / 14.9 N
3 mm Stal (~0.2) 1.28 kg / 2.81 lbs
1276.0 g / 12.5 N
5 mm Stal (~0.2) 0.85 kg / 1.87 lbs
846.0 g / 8.3 N
10 mm Stal (~0.2) 0.26 kg / 0.56 lbs
256.0 g / 2.5 N
15 mm Stal (~0.2) 0.08 kg / 0.17 lbs
76.0 g / 0.7 N
20 mm Stal (~0.2) 0.03 kg / 0.06 lbs
26.0 g / 0.3 N
30 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
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 lbs
2994.0 g / 29.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.00 kg / 4.40 lbs
1996.0 g / 19.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.00 kg / 2.20 lbs
998.0 g / 9.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.99 kg / 11.00 lbs
4990.0 g / 49.0 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 24x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
1.00 kg / 2.20 lbs
998.0 g / 9.8 N
1 mm
25%
2.50 kg / 5.50 lbs
2495.0 g / 24.5 N
2 mm
50%
4.99 kg / 11.00 lbs
4990.0 g / 49.0 N
3 mm
75%
7.49 kg / 16.50 lbs
7485.0 g / 73.4 N
5 mm
100%
9.98 kg / 22.00 lbs
9980.0 g / 97.9 N
10 mm
100%
9.98 kg / 22.00 lbs
9980.0 g / 97.9 N
11 mm
100%
9.98 kg / 22.00 lbs
9980.0 g / 97.9 N
12 mm
100%
9.98 kg / 22.00 lbs
9980.0 g / 97.9 N

Table 5: Thermal resistance (stability) - resistance threshold
MW 24x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 9.98 kg / 22.00 lbs
9980.0 g / 97.9 N
OK
40 °C -2.2% 9.76 kg / 21.52 lbs
9760.4 g / 95.7 N
OK
60 °C -4.4% 9.54 kg / 21.03 lbs
9540.9 g / 93.6 N
80 °C -6.6% 9.32 kg / 20.55 lbs
9321.3 g / 91.4 N
100 °C -28.8% 7.11 kg / 15.67 lbs
7105.8 g / 69.7 N

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 24x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 21.42 kg / 47.22 lbs
4 381 Gs
3.21 kg / 7.08 lbs
3213 g / 31.5 N
N/A
1 mm 20.25 kg / 44.65 lbs
5 390 Gs
3.04 kg / 6.70 lbs
3038 g / 29.8 N
18.23 kg / 40.19 lbs
~0 Gs
2 mm 18.99 kg / 41.86 lbs
5 218 Gs
2.85 kg / 6.28 lbs
2848 g / 27.9 N
17.09 kg / 37.67 lbs
~0 Gs
3 mm 17.67 kg / 38.95 lbs
5 034 Gs
2.65 kg / 5.84 lbs
2650 g / 26.0 N
15.90 kg / 35.06 lbs
~0 Gs
5 mm 15.00 kg / 33.07 lbs
4 638 Gs
2.25 kg / 4.96 lbs
2250 g / 22.1 N
13.50 kg / 29.76 lbs
~0 Gs
10 mm 9.09 kg / 20.03 lbs
3 610 Gs
1.36 kg / 3.00 lbs
1363 g / 13.4 N
8.18 kg / 18.03 lbs
~0 Gs
20 mm 2.74 kg / 6.04 lbs
1 982 Gs
0.41 kg / 0.91 lbs
411 g / 4.0 N
2.46 kg / 5.43 lbs
~0 Gs
50 mm 0.10 kg / 0.23 lbs
385 Gs
0.02 kg / 0.03 lbs
15 g / 0.2 N
0.09 kg / 0.21 lbs
~0 Gs
60 mm 0.04 kg / 0.10 lbs
251 Gs
0.01 kg / 0.01 lbs
7 g / 0.1 N
0.04 kg / 0.09 lbs
~0 Gs
70 mm 0.02 kg / 0.04 lbs
171 Gs
0.00 kg / 0.01 lbs
3 g / 0.0 N
0.02 kg / 0.04 lbs
~0 Gs
80 mm 0.01 kg / 0.02 lbs
121 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
0.01 kg / 0.02 lbs
~0 Gs
90 mm 0.01 kg / 0.01 lbs
89 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.01 lbs
67 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Protective zones (implants) - precautionary measures
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

Table 8: Impact energy (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

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

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

Parameter Value SI Unit / Description
Magnetic Flux 13 932 Mx 139.3 µWb
Pc Coefficient 0.35 Low (Flat)

Table 11: Physics of underwater searching
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%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds only approx. 20-30% of its nominal pull.

2. Steel saturation

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

3. Heat tolerance

*For N38 material, the critical limit 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 and environmental data
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: 010048-2026
Magnet Unit Converter
Magnet pull force

Field Strength

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This product is an extremely powerful rod magnet, manufactured from modern NdFeB material, which, with dimensions of Ø24x6 mm, guarantees optimal power. The MW 24x6 / N38 model features high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 9.98 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, 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 positioning or actuating element. Thanks to the pull force of 97.88 N with a weight of only 20.36 g, this cylindrical magnet is indispensable in electronics 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 precision component. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø24x6), 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 Ø24x6 mm, which, at a weight of 20.36 g, makes it an element with high magnetic energy density. 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 oxidation, 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. 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.

Advantages and disadvantages of neodymium magnets.

Benefits

Apart from their consistent magnetism, neodymium magnets have these key benefits:
  • They do not lose magnetism, even over around ten years – the decrease in power is only ~1% (based on measurements),
  • Neodymium magnets are characterized by remarkably resistant to demagnetization caused by magnetic disturbances,
  • The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Neodymium magnets ensure maximum magnetic induction on a their surface, 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...
  • Possibility of individual modeling as well as adapting to individual needs,
  • Universal use in electronics industry – they are commonly used in computer drives, electromotive mechanisms, medical devices, and complex engineering applications.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • We recommend casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
  • Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is higher than average,

Lifting parameters

Breakaway strength of the magnet in ideal conditionswhat it depends on?

Magnet power is the result of a measurement for the most favorable conditions, assuming:
  • on a base made of structural steel, perfectly concentrating the magnetic flux
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • characterized by even structure
  • with zero gap (no impurities)
  • for force acting at a right angle (in the magnet axis)
  • at standard ambient temperature

Magnet lifting force in use – key factors

Effective lifting capacity impacted by specific conditions, including (from most important):
  • Air gap (betwixt the magnet and the plate), since even a very small distance (e.g. 0.5 mm) can cause a reduction in lifting capacity 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 exhibits much less (typically approx. 20-30% of nominal force).
  • Plate thickness – too thin sheet does not accept the full field, causing part of the flux to be lost to the other side.
  • Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface condition – ground elements guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
  • Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Safe handling of neodymium magnets
Magnet fragility

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Combustion hazard

Machining of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Electronic devices

Avoid bringing magnets close to a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.

Power loss in heat

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

Swallowing risk

Absolutely store magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are fatal.

Pacemakers

Patients with a heart stimulator should maintain an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Impact on smartphones

An intense magnetic field disrupts the functioning of compasses in smartphones and GPS navigation. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Pinching danger

Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing everything in their path. Be careful!

Respect the power

Handle magnets consciously. Their immense force can shock even experienced users. Be vigilant and respect their force.

Skin irritation risks

A percentage of the population have a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Prolonged contact can result in dermatitis. We strongly advise use protective gloves.

Attention! Need more info? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98