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MW 24x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010048

GTIN: 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

9.53 kg / 93.45 N

Magnetic Induction

277.18 mT

Coating

[Zn] Zinc

5.10 ZŁ with VAT / pcs + price for transport

4.15 ZŁ net + 23% VAT / pcs

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MW 24x6 / N38 - cylindrical magnet

Specification / characteristics MW 24x6 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010048
GTIN	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 ~ ?	9.53 kg / 93.45 N
Magnetic Induction ~ ?	277.18 mT
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	T
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

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 106	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10-6	°C^-1
Young's modulus	1.7 x 104	kg/mm²

Engineering modeling of the assembly - report

The following information represent the result of a physical analysis. Values rely on models for the material NdFeB. Operational performance may differ. Please consider these calculations as a preliminary roadmap when designing systems.

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

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	2771 Gs 277.1 mT	9.53 kg / 9530.0 g 93.5 N	warning
1 mm	2609 Gs 260.9 mT	8.45 kg / 8447.5 g 82.9 N	warning
2 mm	2420 Gs 242.0 mT	7.27 kg / 7266.5 g 71.3 N	warning
5 mm	1805 Gs 180.5 mT	4.04 kg / 4042.4 g 39.7 N	warning
10 mm	991 Gs 99.1 mT	1.22 kg / 1218.3 g 12.0 N	low risk
15 mm	542 Gs 54.2 mT	0.36 kg / 364.2 g 3.6 N	low risk
20 mm	313 Gs 31.3 mT	0.12 kg / 121.5 g 1.2 N	low risk
30 mm	125 Gs 12.5 mT	0.02 kg / 19.5 g 0.2 N	low risk
50 mm	34 Gs 3.4 mT	0.00 kg / 1.4 g 0.0 N	low risk

Pulling power drops drastically per each millimeter of spacing. Remember that every additional insulation layer (e.g., contamination, paint, veneer) strongly reduces the pull force. Magnetic products hold optimally in perfect adhesion; gap kills the power. Analyze how quickly the load capacity drop, when the product does not adhere flatly to the steel surface. When designing the arrangement, discard unnecessary gaps.

Table 2: Wall mounting (sliding) - behavior on slippery surfaces
MW 24x6 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.86 kg / 2859.0 g 28.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.91 kg / 1906.0 g 18.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.95 kg / 953.0 g 9.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.77 kg / 4765.0 g 46.7 N

When placing a element on a upright plane (e.g., a fridge), it will only hold only approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that magnets move down faster than they detach. Designing a hanger? Consider that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a significantly smaller load. Utilizing a rubberized pad can significantly improve the result.

Table 3: Material efficiency (saturation) - power losses
MW 24x6 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.95 kg / 953.0 g 9.3 N
1 mm	25%	2.38 kg / 2382.5 g 23.4 N
2 mm	50%	4.77 kg / 4765.0 g 46.7 N
5 mm	100%	9.53 kg / 9530.0 g 93.5 N
10 mm	100%	9.53 kg / 9530.0 g 93.5 N

A too thin steel cannot take in the entire magnetic field, which squanders power of the magnet. Should you mount a strong magnet to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's power, you need a suitably thick piece of steel. The material oversaturation means that on sheet metal structures (e.g., car bodies), the product works worse. We suggest choosing the steel dimension from these parameters.

Table 4: Working in heat (stability) - resistance threshold
MW 24x6 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	9.53 kg / 9530.0 g 93.5 N	OK
40 °C	-2.2%	9.32 kg / 9320.3 g 91.4 N	OK
60 °C	-4.4%	9.11 kg / 9110.7 g 89.4 N	OK
80 °C	-6.6%	8.90 kg / 8901.0 g 87.3 N
100 °C	-28.8%	6.79 kg / 6785.4 g 66.6 N

Classic neodymiums irreversibly lose parameters after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this magnet. With increasing heat, the magnet's power briefly decreases. Do not use this product in hot environments higher than its safe range. Too high temperature will result in permanent loss of magnetic properties.

Table 5: Two magnets (repulsion) - field range
MW 24x6 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	14.29 kg / 14295.0 g 140.2 N	N/A
2 mm	10.91 kg / 10905.0 g 107.0 N	10.18 kg / 10178.0 g 99.8 N
5 mm	6.06 kg / 6060.0 g 59.4 N	5.66 kg / 5656.0 g 55.5 N
10 mm	1.83 kg / 1830.0 g 18.0 N	1.71 kg / 1708.0 g 16.8 N
20 mm	0.18 kg / 180.0 g 1.8 N	0.17 kg / 168.0 g 1.6 N
50 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N

Two magnetic products attract each other from a much further distance than a neodymium and metal setup. The connection of two magnets produces a massive flux and a further horizon of action. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the impact force is massive. The repulsion force is slightly lower than the connection force, but still significant.

Table 6: 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
Mechanical watch	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 is a real danger to electronic devices and pacemakers. These NdFeB products produce a flux that prevents correct functioning of digital equipment. Remember: the unseen radiation penetrates the body and plastic. Exceptional care must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, car keys, speakers, and displays. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 7: Dynamics (cracking risk) - collision effects
MW 24x6 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	23.50 km/h (6.53 m/s)	0.43 J
30 mm	37.84 km/h (10.51 m/s)	1.12 J
50 mm	48.79 km/h (13.55 m/s)	1.87 J
100 mm	69.00 km/h (19.17 m/s)	3.74 J

Neodymium magnets are prone to chipping – a strong collision with metal can result in shattering. Control the attraction moment – a neodymium left loose becomes dangerous. Impact energy can trigger coating fragments or painful pinches to skin. Always hold the magnet during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with large magnets.

Table 8: 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

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 9: Underwater work (magnet fishing)
MW 24x6 / N38

Environment	Effective steel pull	Effect
Air (land)	9.53 kg	Standard
Water (riverbed)	10.91 kg (+1.38 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.

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The offered product is a very strong cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø24x6 mm, guarantees the highest energy density. The MW 24x6 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 9.53 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 93.45 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 long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø24x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 24 mm and height 6 mm. The key parameter here is the holding force amounting to approximately 9.53 kg (force ~93.45 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 most desirable 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 NdFeB magnets.

Besides their stability, neodymium magnets are valued for these benefits:

They have constant strength, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
They feature excellent resistance to weakening of magnetic properties when exposed to external magnetic sources,
A magnet with a metallic gold surface is more attractive,
Magnetic induction on the working part of the magnet remains strong,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
In view of the ability of flexible molding and customization to specialized needs, neodymium magnets can be created in a variety of shapes and sizes, which makes them more universal,
Fundamental importance in high-tech industry – they are used in data components, electric motors, diagnostic systems, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mechanism.
Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can be problematic in diagnostics medical after entering the body.
With budget limitations the cost of neodymium magnets is a challenge,

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

Holding force of 9.53 kg is a result of laboratory testing performed under specific, ideal conditions:

using a sheet made of mild steel, functioning as a ideal flux conductor
with a cross-section of at least 10 mm
characterized by smoothness
without any air gap between the magnet and steel
under vertical force vector (90-degree angle)
at temperature room level

Determinants of practical lifting force of a magnet

Bear in mind that the application force will differ subject to elements below, in order of importance:

Clearance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

* Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a slight gap {between} the magnet and the plate reduces the load capacity.

H&S for magnets

Compass and GPS

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

Electronic hazard

Data protection: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Pinching danger

Protect your hands. Two large magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Conscious usage

Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Warning for allergy sufferers

Certain individuals suffer from a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in a rash. It is best to use protective gloves.

Maximum temperature

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Choking Hazard

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Store out of reach of kids and pets.

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets will cause them breaking into shards.

Mechanical processing

Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

ICD Warning

For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to work with the magnets.

Warning!

More info about risks in the article: Magnet Safety Guide.

MW 24x6 / N38 - cylindrical magnet

MW 24x6 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - report

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Strengths as well as weaknesses of NdFeB magnets.

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

Determinants of practical lifting force of a magnet

H&S for magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C