Product available Ships tomorrow

MW 5x15 / 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 010084

GTIN/EAN: 5906301810834

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

0.48 kg / 4.68 N

Magnetic Induction

610.03 mT / 6100 Gs

Coating

[NiCuNi] Nickel

check technical data »

1.107 ZŁ with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

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Lifting power as well as form of a neodymium magnet can be estimated on our magnetic mass calculator.

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Technical data - MW 5x15 / N38 - cylindrical magnet

Specification / characteristics - MW 5x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010084
GTIN/EAN	5906301810834
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	5 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	2.21 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.48 kg / 4.68 N
Magnetic Induction ~ ?	610.03 mT / 6100 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / 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

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 magnet - technical parameters

The following information constitute the outcome of a engineering analysis. Results rely on models for the material Nd₂Fe₁₄B. Actual performance may differ. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MW 5x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	6091 Gs 609.1 mT	0.48 kg / 480.0 g 4.7 N	low risk
1 mm	3823 Gs 382.3 mT	0.19 kg / 189.1 g 1.9 N	low risk
2 mm	2261 Gs 226.1 mT	0.07 kg / 66.1 g 0.6 N	low risk
3 mm	1378 Gs 137.8 mT	0.02 kg / 24.6 g 0.2 N	low risk
5 mm	607 Gs 60.7 mT	0.00 kg / 4.8 g 0.0 N	low risk
10 mm	154 Gs 15.4 mT	0.00 kg / 0.3 g 0.0 N	low risk
15 mm	63 Gs 6.3 mT	0.00 kg / 0.1 g 0.0 N	low risk
20 mm	32 Gs 3.2 mT	0.00 kg / 0.0 g 0.0 N	low risk
30 mm	12 Gs 1.2 mT	0.00 kg / 0.0 g 0.0 N	low risk
50 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	low risk

Grip strength weakens sharply per each millimeter of spacing. Note that even a very thin break (e.g., dirt, paint, veneer) noticeably reduces the pull force. Magnets operate optimally at the point of direct contact; gap weakens the power. Notice how rapidly the load capacity drop, when the magnet does not adhere directly to the metal substrate. When designing the assembly, eliminate redundant distances.

Table 2: Sliding load (vertical surface)
MW 5x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.10 kg / 96.0 g 0.9 N
1 mm	Stal (~0.2)	0.04 kg / 38.0 g 0.4 N
2 mm	Stal (~0.2)	0.01 kg / 14.0 g 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 4.0 g 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

The table below presents the theoretical force necessary to start the shifting of the magnet down against a upright metal surface (assuming typical friction coefficient). This parameter is relative to the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 5x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 144.0 g 1.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.10 kg / 96.0 g 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 48.0 g 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.24 kg / 240.0 g 2.4 N

When mounting a element on a vertical wall (e.g., a board), it will maintain barely approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip mean that magnets move down faster than they pull off. Planning a hanger? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a noticeably lighter load. Application of an anti-slip layer can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
MW 5x15 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.05 kg / 48.0 g 0.5 N
1 mm	25%	0.12 kg / 120.0 g 1.2 N
2 mm	50%	0.24 kg / 240.0 g 2.4 N
5 mm	100%	0.48 kg / 480.0 g 4.7 N
10 mm	100%	0.48 kg / 480.0 g 4.7 N

A thin metal plate is not enough to take in the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a thin surface, the field will pass right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you require a sufficiently solid backing of steel. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the product holds weaker. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MW 5x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	0.48 kg / 480.0 g 4.7 N	OK
40 °C	-2.2%	0.47 kg / 469.4 g 4.6 N	OK
60 °C	-4.4%	0.46 kg / 458.9 g 4.5 N	OK
80 °C	-6.6%	0.45 kg / 448.3 g 4.4 N
100 °C	-28.8%	0.34 kg / 341.8 g 3.4 N

Classic neodymiums lose parameters above the temperature limit. Avoid high temperatures – heat can irreversibly damage this product. As the temperature rises, the magnet's power briefly decreases. Avoid using this product close to ovens exceeding its safe range. Too high temperature will cause permanent loss of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner compared to rod magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 5x15 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	4.49 kg / 4491 g 44.1 N 6 154 Gs	N/A
1 mm	2.91 kg / 2912 g 28.6 N 9 810 Gs	2.62 kg / 2621 g 25.7 N ~0 Gs
2 mm	1.77 kg / 1769 g 17.4 N 7 646 Gs	1.59 kg / 1592 g 15.6 N ~0 Gs
3 mm	1.05 kg / 1046 g 10.3 N 5 880 Gs	0.94 kg / 942 g 9.2 N ~0 Gs
5 mm	0.37 kg / 372 g 3.7 N 3 507 Gs	0.34 kg / 335 g 3.3 N ~0 Gs
10 mm	0.04 kg / 45 g 0.4 N 1 213 Gs	0.04 kg / 40 g 0.4 N ~0 Gs
20 mm	0.00 kg / 3 g 0.0 N 309 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 37 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two strong neodymiums interact from a wider radius than a neodymium and metal setup. The setup of magnet-to-magnet produces a massive flux and a wider radius of action. Designing a solid fastener? Use a pair of magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the collision energy is massive. The levitation is marginally weaker than the connection force, but still large.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the midpoint of the gap (resulting from vector opposition).

Table 7: Protective zones (implants) - warnings
MW 5x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Remote	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a real danger to IT equipment as well as medical implants. These NdFeB products produce a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field passes through tissues and housings. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MW 5x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	14.87 km/h (4.13 m/s)	0.02 J
30 mm	25.74 km/h (7.15 m/s)	0.06 J
50 mm	33.23 km/h (9.23 m/s)	0.09 J
100 mm	47.00 km/h (13.06 m/s)	0.19 J

Neodymium magnets are delicate – a strong collision with metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or painful pinches to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MW 5x15 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MW 5x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 382 Mx	13.8 µWb
P_c Coefficient	1.38	High (Stable)

Flux value emitted by the magnet pole. Key data in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 5x15 / N38

Environment	Effective steel pull	Effect
Air (land)	0.48 kg	Standard
Water (riverbed)	0.55 kg (+0.07 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.

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Warning: On a vertical wall, the magnet holds just a fraction of its max power.

2. Steel thickness impact

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

3. Power loss vs temp

*For N38 material, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.38

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 P_c (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 P_c 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 specification and ecology

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%

Environmental data

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: 010084-2025

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The offered product is an incredibly powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø5x15 mm, guarantees the highest energy density. The MW 5x15 / N38 model is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.48 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 4.68 N with a weight of only 2.21 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.

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., 5.1 mm) using two-component epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø5x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 15 mm. The key parameter here is the holding force amounting to approximately 0.48 kg (force ~4.68 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 15 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 through the diameter if your project requires it.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Benefits

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

They do not lose magnetism, even during approximately ten years – the drop in power is only ~1% (theoretically),
Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by magnetic disturbances,
A magnet with a metallic nickel surface is more attractive,
They feature high magnetic induction at the operating surface, making them more effective,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
Thanks to flexibility in forming and the ability to modify to individual projects,
Versatile presence in electronics industry – they serve a role in magnetic memories, motor assemblies, advanced medical instruments, and multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Cons of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
We recommend a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complicated forms.
Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical when they are in the body.
Due to expensive raw materials, their price is relatively high,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Information about lifting capacity is the result of a measurement for optimal configuration, including:

on a plate made of mild steel, perfectly concentrating the magnetic flux
possessing a massiveness of at least 10 mm to avoid saturation
with a plane perfectly flat
without any air gap between the magnet and steel
during detachment in a direction vertical to the plane
at ambient temperature room level

Magnet lifting force in use – key factors

In real-world applications, the real power is determined by a number of factors, presented from the most important:

Distance – the presence of any layer (rust, dirt, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
Thermal environment – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of neodymium magnets

Electronic hazard

Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Dust is flammable

Machining of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Magnets are brittle

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into shards.

Bodily injuries

Watch your fingers. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Impact on smartphones

A strong magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Maintain magnets near a device to prevent breaking the sensors.

Adults only

Adult use only. Small elements pose a choking risk, causing severe trauma. Keep away from children and animals.

Medical interference

Patients with a heart stimulator should maintain an large gap from magnets. The magnetic field can interfere with the operation of the implant.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation appears, cease working with magnets and wear gloves.

Do not overheat magnets

Do not overheat. NdFeB magnets are sensitive to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).

Handling rules

Exercise caution. Rare earth magnets attract from a distance and snap with huge force, often faster than you can react.

Safety First! Learn more about hazards in the article: Safety of working with magnets.

MW 5x15 / N38 - cylindrical magnet

Technical data - MW 5x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - technical parameters

Table 1: Static pull force (force vs distance) - characteristics MW 5x15 / N38

Table 2: Sliding load (vertical surface) MW 5x15 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 5x15 / N38

Table 4: Material efficiency (saturation) - power losses MW 5x15 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 5x15 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MW 5x15 / N38

Table 7: Protective zones (implants) - warnings MW 5x15 / N38

Table 8: Collisions (cracking risk) - warning MW 5x15 / N38

Table 9: Anti-corrosion coating durability MW 5x15 / N38

Table 10: Electrical data (Flux) MW 5x15 / N38

Table 11: Underwater work (magnet fishing) MW 5x15 / N38

1. Sliding resistance

2. Steel thickness impact

3. Power loss vs temp

4. Demagnetization curve and operating point (B-H)

Elemental analysis

Environmental data

Magnet pull force

Magnetic Field

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Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Limitations

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Magnet lifting force in use – key factors

Safe handling of neodymium magnets

Electronic hazard

Dust is flammable

Magnets are brittle

Bodily injuries

Impact on smartphones

Adults only

Medical interference

Nickel coating and allergies

Do not overheat magnets

Handling rules

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MW 5x15 / N38

Table 2: Sliding load (vertical surface)
MW 5x15 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 5x15 / N38

Table 4: Material efficiency (saturation) - power losses
MW 5x15 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 5x15 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 5x15 / N38

Table 7: Protective zones (implants) - warnings
MW 5x15 / N38

Table 8: Collisions (cracking risk) - warning
MW 5x15 / N38

Table 9: Anti-corrosion coating durability
MW 5x15 / N38

Table 10: Electrical data (Flux)
MW 5x15 / N38

Table 11: Underwater work (magnet fishing)
MW 5x15 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.