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MW 24x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010048

GTIN/EAN: 5906301810476

5.00
Load capacity 9.98 kg / 97.88 N Magnetic Induction 277.18 mT / 2772 Gs
Diameter Ø
24 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
20.36 g
Magnetization Direction
↑ axial
Coating
[Zn] Zinc
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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 parameters - 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 simulation of the assembly - report

The following values are the direct effect of a physical analysis. Results were calculated on models for the material Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - 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 LBS
9980.0 g / 97.9 N
 medium risk
1 mm 2609 Gs
260.9 mT
 8.85 kg / 19.50 LBS
8846.4 g / 86.8 N
 medium risk
2 mm 2420 Gs
242.0 mT
 7.61 kg / 16.78 LBS
7609.6 g / 74.7 N
 medium risk
3 mm 2216 Gs
221.6 mT
 6.38 kg / 14.07 LBS
6383.0 g / 62.6 N
 medium risk
5 mm 1805 Gs
180.5 mT
 4.23 kg / 9.33 LBS
4233.2 g / 41.5 N
 medium risk
10 mm 991 Gs
99.1 mT
 1.28 kg / 2.81 LBS
1275.9 g / 12.5 N
 weak grip
15 mm 542 Gs
54.2 mT
 0.38 kg / 0.84 LBS
381.4 g / 3.7 N
 weak grip
20 mm 313 Gs
31.3 mT
 0.13 kg / 0.28 LBS
127.2 g / 1.2 N
 weak grip
30 mm 125 Gs
12.5 mT
 0.02 kg / 0.04 LBS
20.4 g / 0.2 N
 weak grip
50 mm 34 Gs
3.4 mT
 0.00 kg / 0.00 LBS
1.5 g / 0.0 N
 weak grip
Grip strength drops sharply with every mm of spacing. Keep in mind that even a microscopic distance (e.g., dirt, paint, dust) strongly weakens the grip. Magnets work most effectively in perfect adhesion; air break kills the force. Observe how rapidly the parameters drop, when the product does not adhere flatly to the steel surface. When planning the arrangement, eliminate redundant distances.

Table 2: Sliding load (wall)
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
The following data calculates the theoretical holding capacity sufficient to cause the downward movement of the magnet down along a vertical metal surface (considering typical friction coefficient). This parameter depends on the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - 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
When mounting a holder on a upright plane (e.g., a fridge), it will maintain just about 20%-30% of its nominal power. Gravity as well as a low friction coefficient influence the fact that magnets slide down faster than they detach. Designing a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will give way down under a noticeably lighter weight. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Steel thickness (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 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
A thin sheet is not enough to focus the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a thin surface, the field will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you require a sufficiently solid backing of steel. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal resistance (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 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
Standard neodymium magnets change their properties parameters past the thermal threshold. Avoid high temperatures – heat can permanently destroy this magnet. With every degree above norm, the magnet's power temporarily decreases. Avoid using this product near heat sources higher than its working range. Ignoring the limit will result in destruction of magnetic properties.
*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
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 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
Two magnets interact from a significantly greater distance than a magnet and sheet setup. The setup of magnet-to-magnet produces a massive flux and a further horizon of performance. Planning to create a strong closure? Apply two magnets instead of a neodymium and a steel. Be careful that when bringing together two magnets, the pinch force is huge. The levitation is slightly lower than the attraction, but still significant.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Results apply to sliding force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (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
Car key 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 large risk to IT equipment and pacemakers. These magnets generate a field that disrupts operation of digital equipment. Notice: the unseen radiation penetrates the body and glass. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

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

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.39 km/h
(6.78 m/s)
 0.47 J
30 mm 25.74 km/h
(7.15 m/s)
 0.52 J
50 mm 25.77 km/h
(7.16 m/s)
 0.52 J
100 mm 25.77 km/h
(7.16 m/s)
 0.52 J
Magnetic elements are prone to chipping – a collision with steel risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can destroy the magnet or painful pinches to fingers. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles 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
Neodymium magnets are highly susceptible to corrosion without proper protection. 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)
Total magnetic flux passing through the pole surface. Essential parameter when building generators and motors. The Pc coefficient determines the magnet's operating point.

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%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

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

2. Steel thickness impact

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Thermal stability

*For standard magnets, the safety 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

Chemical composition

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
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This product is an incredibly powerful cylinder magnet, produced from advanced NdFeB material, which, with dimensions of Ø24x6 mm, guarantees optimal power. The MW 24x6 / N38 component is characterized by an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 9.98 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 97.88 N with a weight of only 20.36 g, this rod is indispensable in electronics 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., 24.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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 key parameter here is the holding force amounting to approximately 9.98 kg (force ~97.88 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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 24 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 diametrically if your project requires it.

Advantages and disadvantages of neodymium magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose strength, even after approximately ten years – the reduction in strength is only ~1% (theoretically),
  • They show high resistance to demagnetization induced by external field influence,
  • By covering with a shiny coating of silver, the element acquires an elegant look,
  • Magnets exhibit impressive magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the possibility of flexible shaping and adaptation to unique requirements, NdFeB magnets can be produced in a wide range of forms and dimensions, which makes them more universal,
  • Huge importance in advanced technology sectors – they find application in hard drives, electric drive systems, diagnostic systems, and modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of creating nuts in the magnet and complex shapes - preferred is cover - magnet mounting.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these products are able to be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

The declared magnet strength refers to the maximum value, measured under optimal environment, namely:
  • using a base made of low-carbon steel, serving as a magnetic yoke
  • whose thickness reaches at least 10 mm
  • with an ideally smooth touching surface
  • with zero gap (no paint)
  • during pulling in a direction vertical to the mounting surface
  • at room temperature

Lifting capacity in real conditions – factors

In real-world applications, the actual holding force is determined by a number of factors, listed from the most important:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Metal type – not every steel reacts the same. Alloy additives worsen the attraction effect.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal environment – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets
Dust explosion hazard

Powder created during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Skin irritation risks

A percentage of the population experience a sensitization to nickel, which is the standard coating for neodymium magnets. Frequent touching might lead to skin redness. We strongly advise use protective gloves.

Material brittleness

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets will cause them breaking into small pieces.

Serious injuries

Danger of trauma: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.

Electronic devices

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Threat to navigation

A powerful magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Maintain magnets close to a device to avoid damaging the sensors.

Caution required

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).

Swallowing risk

Always store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Warning for heart patients

Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Attention! Details about hazards in the article: Magnet Safety Guide.