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MW 10x10 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

cylindrical magnet

Catalog no 010004

GTIN: 5906301810032

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

5.89 g

Magnetization Direction

↑ axial

Load capacity

4.7 kg / 46.15 N

Magnetic Induction

553.84 mT

Coating

[NiCuNi] Nickel

4.31 ZŁ with VAT / pcs + price for transport

3.50 ZŁ net + 23% VAT / pcs

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MW 10x10 / N38 - cylindrical magnet

Specification / characteristics MW 10x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010004
GTIN	5906301810032
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	10 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	5.89 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.7 kg / 46.15 N
Magnetic Induction ~ ?	553.84 mT
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x10 / 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 analysis of the product - data

The following values are the direct effect of a mathematical simulation. Results rely on models for the class NdFeB. Actual performance may differ from theoretical values. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - power drop
MW 10x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	5534 Gs 553.4 mT	4.70 kg / 4700.0 g 46.1 N	strong
1 mm	4428 Gs 442.8 mT	3.01 kg / 3009.4 g 29.5 N	strong
2 mm	3420 Gs 342.0 mT	1.80 kg / 1795.4 g 17.6 N	low risk
5 mm	1498 Gs 149.8 mT	0.34 kg / 344.3 g 3.4 N	low risk
10 mm	469 Gs 46.9 mT	0.03 kg / 33.8 g 0.3 N	low risk
15 mm	198 Gs 19.8 mT	0.01 kg / 6.0 g 0.1 N	low risk
20 mm	101 Gs 10.1 mT	0.00 kg / 1.6 g 0.0 N	low risk
30 mm	36 Gs 3.6 mT	0.00 kg / 0.2 g 0.0 N	low risk
50 mm	9 Gs 0.9 mT	0.00 kg / 0.0 g 0.0 N	low risk

Pulling power drops drastically with every mm of spacing. Keep in mind that even the smallest gap (e.g., contamination, paint, veneer) strongly weakens the grip. Magnets hold most effectively at the point of direct contact; air break kills the power. Observe how quickly the parameters fall, when the magnet does not touch directly to the steel surface. When calculating the mounting, avoid redundant distances.

Table 2: Vertical assembly (sliding) - behavior on slippery surfaces
MW 10x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.41 kg / 1410.0 g 13.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.94 kg / 940.0 g 9.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.47 kg / 470.0 g 4.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.35 kg / 2350.0 g 23.1 N

When mounting a element on a vertical plane (e.g., a car body), it will only hold only approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip cause that holders slide down faster than they detach. Designing a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller weight. Utilizing a rubberized coating can significantly raise the stability.

Table 3: Material efficiency (saturation) - sheet metal selection
MW 10x10 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.47 kg / 470.0 g 4.6 N
1 mm	25%	1.18 kg / 1175.0 g 11.5 N
2 mm	50%	2.35 kg / 2350.0 g 23.1 N
5 mm	100%	4.70 kg / 4700.0 g 46.1 N
10 mm	100%	4.70 kg / 4700.0 g 46.1 N

A too thin steel is incapable of absorb the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To utilize 100% of this magnet's power, you require a sufficiently solid backing of metal. The saturation effect causes that on thin elements (e.g., thin profiles), the product works worse. We recommend selecting the steel cross-section based on the following data.

Table 4: Thermal stability (stability) - resistance threshold
MW 10x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	4.70 kg / 4700.0 g 46.1 N	OK
40 °C	-2.2%	4.60 kg / 4596.6 g 45.1 N	OK
60 °C	-4.4%	4.49 kg / 4493.2 g 44.1 N	OK
80 °C	-6.6%	4.39 kg / 4389.8 g 43.1 N
100 °C	-28.8%	3.35 kg / 3346.4 g 32.8 N

Classic neodymiums change their properties power past the thermal threshold. Protect against heat – excessive heat can irreversibly damage this product. As the temperature rises, the magnet's force momentarily decreases. Do not use this magnet near heat sources exceeding its operating temperature limit. Exceeding the critical threshold will cause destruction of magnetic properties.

Table 5: Two magnets (attraction) - forces in the system
MW 10x10 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	7.05 kg / 7050.0 g 69.2 N	N/A
2 mm	2.70 kg / 2700.0 g 26.5 N	2.52 kg / 2520.0 g 24.7 N
5 mm	0.51 kg / 510.0 g 5.0 N	0.48 kg / 476.0 g 4.7 N
10 mm	0.05 kg / 45.0 g 0.4 N	0.04 kg / 42.0 g 0.4 N
20 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 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 combination. The setup of magnet-to-magnet generates a stronger field and a further horizon of action. Want to build a solid fastener? Apply two magnets instead of a neodymium and a steel. Remember that when bringing together two magnets, the impact force is extreme. The levitation is slightly lower than the attraction, but still large.

Table 6: Safety (HSE) (implants) - warnings
MW 10x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a real danger to electronics as well as pacemakers. These magnets produce a flux that destroys function of digital equipment. Notice: the unseen radiation acts through matter and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 7: Collisions (cracking risk) - warning
MW 10x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.62 km/h (7.95 m/s)	0.19 J
30 mm	49.35 km/h (13.71 m/s)	0.55 J
50 mm	63.70 km/h (17.70 m/s)	0.92 J
100 mm	90.09 km/h (25.02 m/s)	1.84 J

Neodymium magnets are prone to chipping – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Kinetic force can trigger coating fragments or injury to skin. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when handling with large magnets.

Table 8: Anti-corrosion coating durability
MW 10x10 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 9: Underwater work (magnet fishing)
MW 10x10 / N38

Environment	Effective steel pull	Effect
Air (land)	4.70 kg	Standard
Water (riverbed)	5.38 kg (+0.68 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!

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

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The presented product is an exceptionally strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø10x10 mm, guarantees the highest energy density. The MW 10x10 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 4.7 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 46.15 N with a weight of only 5.89 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø10x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø10x10 mm, which, at a weight of 5.89 g, makes it an element with high magnetic energy density. The value of 46.15 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.89 g. The product has a [NiCuNi] coating, which secures it 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 10 mm. 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 through the diameter if your project requires it.

Advantages as well as disadvantages of NdFeB magnets.

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
They are resistant to demagnetization induced by external field influence,
The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
They feature 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 form) even at high temperatures reaching 230°C or more...
Thanks to flexibility in forming and the ability to customize to complex applications,
Universal use in modern industrial fields – they are utilized in data components, motor assemblies, precision medical tools, as well as multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We recommend a housing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated shapes.
Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Maximum lifting force for a neodymium magnet – what contributes to it?

The force parameter is a measurement result executed under specific, ideal conditions:

using a sheet made of high-permeability steel, functioning as a circuit closing element
possessing a thickness of at least 10 mm to avoid saturation
characterized by smoothness
under conditions of no distance (metal-to-metal)
during pulling in a direction perpendicular to the plane
at room temperature

Practical aspects of lifting capacity – factors

During everyday use, the actual holding force is determined by several key aspects, listed from crucial:

Clearance – existence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
Chemical composition of the base – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
Surface quality – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

* Lifting capacity was determined with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance {between} the magnet’s surface and the plate lowers the holding force.

Precautions when working with NdFeB magnets

Magnet fragility

NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them cracking into shards.

Flammability

Combustion risk: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Precision electronics

Note: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your phone, device, and navigation systems.

Heat sensitivity

Do not overheat. Neodymium magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Allergy Warning

Medical facts indicate that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands and choose encased magnets.

Cards and drives

Do not bring magnets near a wallet, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Choking Hazard

Adult use only. Tiny parts can be swallowed, leading to serious injuries. Store away from children and animals.

Bone fractures

Big blocks can crush fingers instantly. Under no circumstances place your hand betwixt two strong magnets.

Respect the power

Handle with care. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.

Health Danger

For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Danger!

More info about risks in the article: Safety of working with magnets.

MW 10x10 / N38 - cylindrical magnet

MW 10x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - data

Other products

MW 100x30 / N38 - cylindrical magnet

MPL 40x20x10 / N38 - lamellar magnet

SM 32x200 [2xM8] / N42 - magnetic separator

SM 32x125 [2xM8] / N42 - magnetic separator

Advantages as well as disadvantages of NdFeB magnets.

Maximum lifting force for a neodymium magnet – what contributes to it?

Practical aspects of lifting capacity – factors

Precautions when working with NdFeB magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C