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

technical parameters »

1.107 ZŁ with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

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Detailed specification - 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 analysis of the magnet - technical parameters

Presented information constitute the direct effect of a physical simulation. Values rely on algorithms for the material Nd₂Fe₁₄B. Real-world conditions might slightly deviate from the simulation results. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
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	weak grip
1 mm	3823 Gs 382.3 mT	0.19 kg / 189.1 g 1.9 N	weak grip
2 mm	2261 Gs 226.1 mT	0.07 kg / 66.1 g 0.6 N	weak grip
3 mm	1378 Gs 137.8 mT	0.02 kg / 24.6 g 0.2 N	weak grip
5 mm	607 Gs 60.7 mT	0.00 kg / 4.8 g 0.0 N	weak grip
10 mm	154 Gs 15.4 mT	0.00 kg / 0.3 g 0.0 N	weak grip
15 mm	63 Gs 6.3 mT	0.00 kg / 0.1 g 0.0 N	weak grip
20 mm	32 Gs 3.2 mT	0.00 kg / 0.0 g 0.0 N	weak grip
30 mm	12 Gs 1.2 mT	0.00 kg / 0.0 g 0.0 N	weak grip
50 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	weak grip

Magnetic force drops significantly with every subsequent millimeter of spacing. Note that even a microscopic distance (e.g., dirt, paint, veneer) significantly reduces the pull force. Neodymiums work most effectively during direct contact; distance nullifies the power. Notice how flashily the pull force fall, when the product does not touch directly to the metal substrate. When designing the assembly, avoid additional spacers.

Table 2: Sliding force (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 calculates the estimated shear load sufficient to initiate the sliding of the magnet down on a vertical steel wall (assuming typical friction coefficient). The holding force is relative to the gap size 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 placing a magnet on a vertical surface (e.g., a fridge), it will maintain just about 1/5 of its maximum pull force. Gravitational force and a weak degree of grip mean that holders slip faster than they pull off. Planning a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the magnet will slip down under a significantly smaller load. Application of an anti-slip pad can significantly raise the stability.

Table 4: Steel thickness (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 sheet is incapable of focus the entire magnetic field, which squanders power of the holder. If you attach a powerful product to a too thin substrate, the field will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's potential, you need a suitably thick backing of steel. The material oversaturation causes that on sheet metal structures (e.g., appliance housings), the product works worse. We advise picking the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
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

Standard neodymium magnets lose strength after exceeding the maximum temperature. Protect against heat – excessive heat can permanently damage this product. With every degree above norm, the neodymium's force temporarily decreases. Avoid using this magnet in hot environments higher than its safe range. Too high temperature will cause destruction of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently sooner compared to rod magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - 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 two magnets generates a stronger field and a larger range of performance. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the collision energy is extreme. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction for N-N configuration reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).

Table 7: Protective zones (electronics) - precautionary measures
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
Mobile device	40 Gs (4.0 mT)	2.0 cm
Car key	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

Extremely neodym field poses a large risk to IT equipment as well as medical implants. These magnets produce a field that prevents correct functioning of digital equipment. Notice: the unseen radiation acts through matter and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - 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

Magnetic elements are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can cause material chips or injury to fingers. 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 almost guarantees destruction of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Surface protection spec
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. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
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 passing through the magnet pole. Key data in coil applications and motors. The P_c coefficient defines the magnet's operating point.

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.

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Warning: On a vertical surface, the magnet retains just a fraction of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) severely weakens the holding force.

3. Thermal stability

*For N38 material, the critical 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.

Engineering data and GPSR

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%

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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MW 15x4 / N38 - cylindrical magnet

1.968 ZŁ brutto / pcs

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6.81 ZŁ brutto / pcs

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MW 16x9 / N38 - cylindrical magnet

7.36 ZŁ brutto / pcs

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24.60 ZŁ brutto / pcs

The offered product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø5x15 mm, guarantees optimal power. The MW 5x15 / N38 component features a tolerance of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.48 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 4.68 N with a weight of only 2.21 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way 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, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø5x15), 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 5 mm and height 15 mm. The value of 4.68 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.21 g. 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 5 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 Nd₂Fe₁₄B magnets.

Pros

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

Their magnetic field is maintained, and after around 10 years it decreases only by ~1% (according to research),
They are noted for resistance to demagnetization induced by external field influence,
By covering with a decorative coating of nickel, the element has an proper look,
Magnets possess maximum magnetic induction on the active area,
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...
Possibility of individual modeling and modifying to complex needs,
Huge importance in innovative solutions – they serve a role in computer drives, electromotive mechanisms, medical equipment, as well as modern systems.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Weaknesses

Drawbacks and weaknesses of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also increases their durability
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited ability of making nuts in the magnet and complex forms - recommended is cover - magnetic holder.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these products can complicate diagnosis medical after entering the body.
Due to complex production process, their price exceeds standard values,

Pull force analysis

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

Holding force of 0.48 kg is a measurement result performed under specific, ideal conditions:

on a base made of structural steel, perfectly concentrating the magnetic flux
possessing a thickness of minimum 10 mm to ensure full flux closure
with a plane perfectly flat
without any air gap between the magnet and steel
for force acting at a right angle (pull-off, not shear)
at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on several key aspects, listed from the most important:

Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Plate material – mild steel gives the best results. Higher carbon content decrease magnetic properties and lifting capacity.
Smoothness – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with neodymium magnets

Permanent damage

Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.

Eye protection

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Conscious usage

Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Medical implants

For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Serious injuries

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Threat to navigation

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Electronic devices

Device Safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Fire risk

Dust produced during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

Product not for children

Only for adults. Small elements pose a choking risk, leading to severe trauma. Store out of reach of kids and pets.

Sensitization to coating

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness happens, immediately stop working with magnets and wear gloves.

Danger! Learn more about risks in the article: Safety of working with magnets.

MW 5x15 / N38 - cylindrical magnet

Detailed specification - MW 5x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - interaction chart MW 5x15 / N38

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

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

Table 4: Steel thickness (saturation) - power losses MW 5x15 / N38

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

Table 6: Two magnets (repulsion) - field range MW 5x15 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 5x15 / N38

Table 8: Collisions (kinetic energy) - warning MW 5x15 / N38

Table 9: Surface protection spec MW 5x15 / N38

Table 10: Construction data (Pc) MW 5x15 / N38

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

1. Vertical hold

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Environmental data

Pulling force

Magnetic Field

Other offers

MW 15x4 / N38 - cylindrical magnet

UMT 29x38 white / N38 - board holder

MW 16x9 / N38 - cylindrical magnet

KM HF - 11,3 kg - magnetic bracket

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Pull force analysis

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

Key elements affecting lifting force

Precautions when working with neodymium magnets

Permanent damage

Eye protection

Conscious usage

Medical implants

Serious injuries

Threat to navigation

Electronic devices

Fire risk

Product not for children

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MW 5x15 / N38

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

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

Table 4: Steel thickness (saturation) - power losses
MW 5x15 / N38

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

Table 6: Two magnets (repulsion) - field range
MW 5x15 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 5x15 / N38

Table 8: Collisions (kinetic energy) - warning
MW 5x15 / N38

Table 9: Surface protection spec
MW 5x15 / N38

Table 10: Construction data (P_c)
MW 5x15 / N38

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

Advantages and disadvantages of Nd₂Fe₁₄B magnets.