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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

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Physical properties - 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

Physical modeling of the product - data

These values constitute the direct effect of a mathematical simulation. Values rely on models for the material Nd2Fe14B. Operational parameters might slightly differ. Use these data as a reference point 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 pounds
9980.0 g / 97.9 N
 warning
1 mm 2609 Gs
260.9 mT
 8.85 kg / 19.50 pounds
8846.4 g / 86.8 N
 warning
2 mm 2420 Gs
242.0 mT
 7.61 kg / 16.78 pounds
7609.6 g / 74.7 N
 warning
3 mm 2216 Gs
221.6 mT
 6.38 kg / 14.07 pounds
6383.0 g / 62.6 N
 warning
5 mm 1805 Gs
180.5 mT
 4.23 kg / 9.33 pounds
4233.2 g / 41.5 N
 warning
10 mm 991 Gs
99.1 mT
 1.28 kg / 2.81 pounds
1275.9 g / 12.5 N
 weak grip
15 mm 542 Gs
54.2 mT
 0.38 kg / 0.84 pounds
381.4 g / 3.7 N
 weak grip
20 mm 313 Gs
31.3 mT
 0.13 kg / 0.28 pounds
127.2 g / 1.2 N
 weak grip
30 mm 125 Gs
12.5 mT
 0.02 kg / 0.04 pounds
20.4 g / 0.2 N
 weak grip
50 mm 34 Gs
3.4 mT
 0.00 kg / 0.00 pounds
1.5 g / 0.0 N
 weak grip
Pulling power decreases significantly with every subsequent millimeter of distance. Note that even a very thin break (e.g., dirt, varnish, rust) noticeably weakens the grip. Neodymiums hold strongest in perfect adhesion; air break kills the force. Notice how rapidly the parameters plummet, when the product does not touch flatly to the steel surface. When calculating the arrangement, eliminate additional spacers.

Table 2: Slippage capacity (wall)
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 shows the theoretical force required to cause the sliding of the magnet downwards along a vertical metal surface (considering standard friction). This value varies with the air gap between the magnet and the surface.

Table 3: Wall mounting (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 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 hanging a element on a vertical surface (e.g., a car body), it will only hold barely approx. 20%-30% of its nominal power. Gravity and a weak degree of grip influence the fact that products slip easier than they pop off the substrate. Designing a hanger? Remember that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will give way down under a significantly smaller weight. Using a rubber coating can significantly increase the grip.

Table 4: Material efficiency (saturation) - 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 too thin steel is unable to absorb the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a thin surface, the field will penetrate right through and the attraction force will be weaker. To utilize the maximum of this neodymium's potential, you require a sufficiently solid piece of metal. The material oversaturation causes that on delicate walls (e.g., appliance housings), the magnet works worse. We suggest choosing the steel thickness according to the table below.

Table 5: Working in heat (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 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
Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Avoid high temperatures – heat can permanently demagnetize this product. As the temperature rises, the magnet's power momentarily lowers. Refrain from using this product close to heaters higher than its safe range. Too high temperature will cause irreversible degradation of magnetism.
*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (low Pc) may lose charge permanently sooner than taller cylinders. Red status in the table indicates a risk of irreversible loss for this specific geometry.

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

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (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 interact from a much further distance than a magnet and sheet setup. Such a system of two magnets creates a more powerful interaction and a wider radius of operation. Planning to create a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the impact force is extreme. The repulsion force is a bit weaker than the connection force, but still significant.
*The magnetic induction between like poles is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Figures demonstrate shear force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - 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
Phone / Smartphone 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
Extremely neodym field poses a large risk to IT equipment and pacemakers. These neodymiums generate a flux that prevents correct functioning of digital equipment. Remember: the unseen radiation penetrates the body and housings. Special caution must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (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
NdFeB products are prone to chipping – a violent impact against metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (durability)
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
The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

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)
Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. Pc value defines the working geometry.

Table 11: Underwater work (magnet fishing)
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
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

*Warning: On a vertical wall, the magnet retains merely ~20% of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.

3. Power loss vs temp

*For N38 grade, 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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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
Measurement Calculator
Force (pull)
Field Strength
Type your figure in one of the inputs, to see all other values will update automatically.

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The presented product is an exceptionally strong cylindrical magnet, manufactured from durable NdFeB material, which, at dimensions of Ø24x6 mm, guarantees maximum efficiency. The MW 24x6 / N38 model features a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 9.98 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 97.88 N with a weight of only 20.36 g, this rod is indispensable in electronics and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, 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 industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are strong enough for 90% of applications in automation 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 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 key parameter here is the lifting capacity amounting to approximately 9.98 kg (force ~97.88 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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.

Strengths and weaknesses of neodymium magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • Their magnetic field is maintained, and after approximately ten years it drops only by ~1% (theoretically),
  • They show high resistance to demagnetization induced by external field influence,
  • The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to look better,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of detailed creating as well as adapting to concrete conditions,
  • Universal use in electronics industry – they find application in data components, brushless drives, precision medical tools, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

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 shields the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Due to limitations in creating nuts and complex shapes in magnets, we recommend using a housing - magnetic holder.
  • Possible danger to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical after entering the body.
  • Due to complex production process, their price is relatively high,

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Breakaway force was determined for the most favorable conditions, taking into account:
  • using a sheet made of mild steel, acting as a ideal flux conductor
  • whose transverse dimension is min. 10 mm
  • with a plane free of scratches
  • with zero gap (without impurities)
  • under vertical force direction (90-degree angle)
  • at temperature room level

Determinants of lifting force in real conditions

In practice, the actual lifting capacity results from several key aspects, presented from crucial:
  • Clearance – the presence of any layer (paint, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
  • Smoothness – full contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal factor – high temperature weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet’s surface and the plate lowers the holding force.

Safety rules for work with NdFeB magnets
Mechanical processing

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Medical implants

Patients with a ICD have to keep an large gap from magnets. The magnetism can interfere with the operation of the implant.

Protect data

Very strong magnetic fields can erase data on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.

Phone sensors

Navigation devices and smartphones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Thermal limits

Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Fragile material

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Conscious usage

Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Finger safety

Danger of trauma: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Product not for children

Absolutely keep magnets away from children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are life-threatening.

Nickel coating and allergies

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness occurs, cease working with magnets and wear gloves.

Attention! Looking for details? Read our article: Are neodymium magnets dangerous?