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MW 10x15 / 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 010005

GTIN/EAN: 5906301810049

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

8.84 g

Magnetization Direction

↑ axial

Load capacity

2.60 kg / 25.51 N

Magnetic Induction

587.44 mT / 5874 Gs

Coating

[NiCuNi] Nickel

6.15 ZŁ with VAT / pcs + price for transport

5.00 ZŁ net + 23% VAT / pcs

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MW 10x15 / N38 - cylindrical magnet

Specification / characteristics MW 10x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010005
GTIN/EAN	5906301810049
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	15 mm [±0,1 mm]
Weight	8.84 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.60 kg / 25.51 N
Magnetic Induction ~ ?	587.44 mT / 5874 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x15 / 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

Technical analysis of the assembly - technical parameters

Presented information are the result of a engineering simulation. Results are based on models for the class Nd₂Fe₁₄B. Real-world parameters might slightly deviate from the simulation results. Use these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 10x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	5870 Gs 587.0 mT	2.60 kg / 2600.0 g 25.5 N	strong
1 mm	4702 Gs 470.2 mT	1.67 kg / 1668.3 g 16.4 N	low risk
2 mm	3645 Gs 364.5 mT	1.00 kg / 1002.8 g 9.8 N	low risk
3 mm	2784 Gs 278.4 mT	0.58 kg / 584.8 g 5.7 N	low risk
5 mm	1631 Gs 163.1 mT	0.20 kg / 200.7 g 2.0 N	low risk
10 mm	534 Gs 53.4 mT	0.02 kg / 21.5 g 0.2 N	low risk
15 mm	234 Gs 23.4 mT	0.00 kg / 4.1 g 0.0 N	low risk
20 mm	123 Gs 12.3 mT	0.00 kg / 1.1 g 0.0 N	low risk
30 mm	46 Gs 4.6 mT	0.00 kg / 0.2 g 0.0 N	low risk
50 mm	13 Gs 1.3 mT	0.00 kg / 0.0 g 0.0 N	low risk

Pulling power weakens drastically with every subsequent millimeter of spacing. Note that every additional insulation layer (e.g., dirt, paint, dust) strongly diminishes the holding power. Magnetic products operate strongest during direct contact; air break drastically cuts the power. Notice how quickly the parameters fall, when the product does not touch tightly to the metal substrate. When planning the assembly, eliminate unnecessary gaps.

Table 2: Slippage load (wall)
MW 10x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.52 kg / 520.0 g 5.1 N
1 mm	Stal (~0.2)	0.33 kg / 334.0 g 3.3 N
2 mm	Stal (~0.2)	0.20 kg / 200.0 g 2.0 N
3 mm	Stal (~0.2)	0.12 kg / 116.0 g 1.1 N
5 mm	Stal (~0.2)	0.04 kg / 40.0 g 0.4 N
10 mm	Stal (~0.2)	0.00 kg / 4.0 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 following data defines the approximate holding capacity sufficient to cause the slippage of the magnet downwards on a upright steel plate (considering standard friction coefficient). This value varies with the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 10x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.78 kg / 780.0 g 7.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.52 kg / 520.0 g 5.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.26 kg / 260.0 g 2.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.30 kg / 1300.0 g 12.8 N

When hanging a element on a upright plane (e.g., a board), it will only hold just approx. 1/5 of its maximum pull force. Gravity as well as a low friction coefficient mean that products slide down easier than they pop off the substrate. Want to create a vertical fastening? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a noticeably lighter weight. Utilizing a rubberized layer can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 10x15 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.26 kg / 260.0 g 2.6 N
1 mm	25%	0.65 kg / 650.0 g 6.4 N
2 mm	50%	1.30 kg / 1300.0 g 12.8 N
5 mm	100%	2.60 kg / 2600.0 g 25.5 N
10 mm	100%	2.60 kg / 2600.0 g 25.5 N

A too thin steel is unable to absorb the full magnetic flux, which squanders power of the holder. Should you attach a powerful product to a too thin substrate, the magnetism will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the product works worse. We advise picking the steel cross-section according to the table below.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 10x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	2.60 kg / 2600.0 g 25.5 N	OK
40 °C	-2.2%	2.54 kg / 2542.8 g 24.9 N	OK
60 °C	-4.4%	2.49 kg / 2485.6 g 24.4 N	OK
80 °C	-6.6%	2.43 kg / 2428.4 g 23.8 N
100 °C	-28.8%	1.85 kg / 1851.2 g 18.2 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can irreversibly destroy this product. As the temperature rises, the magnet's capacity momentarily lowers. Refrain from using this product near heat sources higher than its operating temperature limit. Too high temperature will result in destruction of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 10x15 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	16.68 kg / 16683 g 163.7 N 6 103 Gs	N/A
1 mm	13.52 kg / 13517 g 132.6 N 10 567 Gs	12.17 kg / 12166 g 119.3 N ~0 Gs
2 mm	10.70 kg / 10704 g 105.0 N 9 404 Gs	9.63 kg / 9634 g 94.5 N ~0 Gs
3 mm	8.35 kg / 8347 g 81.9 N 8 304 Gs	7.51 kg / 7512 g 73.7 N ~0 Gs
5 mm	4.92 kg / 4923 g 48.3 N 6 377 Gs	4.43 kg / 4431 g 43.5 N ~0 Gs
10 mm	1.29 kg / 1288 g 12.6 N 3 262 Gs	1.16 kg / 1159 g 11.4 N ~0 Gs
20 mm	0.14 kg / 138 g 1.4 N 1 068 Gs	0.12 kg / 124 g 1.2 N ~0 Gs
50 mm	0.00 kg / 3 g 0.0 N 145 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two magnetic products interact from a much further distance than a magnet and steel combination. Such a system of magnet-to-magnet produces a massive flux and a wider radius of operation. Want to build a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the collision energy is huge. The levitation is marginally weaker than the attraction, but still impressive.
*Flux density for N-N configuration reaches ~0 Gs at the midpoint of the gap (due to field cancellation).

Table 7: Safety (HSE) (electronics) - warnings
MW 10x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.5 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Timepiece	20 Gs (2.0 mT)	4.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.5 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

Powerful magnet radiation poses a large risk to electronics and pacemakers. These neodymiums generate a field that destroys function of digital equipment. Notice: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MW 10x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.39 km/h (4.83 m/s)	0.10 J
30 mm	29.96 km/h (8.32 m/s)	0.31 J
50 mm	38.67 km/h (10.74 m/s)	0.51 J
100 mm	54.69 km/h (15.19 m/s)	1.02 J

Neodymium magnets are prone to chipping – a violent impact against metal can result in shattering. Watch the impact speed – a magnet released freely turns into a projectile. Impact energy can cause material chips or injury to skin. Always hold the magnet during installation 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 playing with large magnets.

Table 9: Corrosion resistance
MW 10x15 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

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

Parameter	Value	SI Unit / Description
Magnetic Flux	4 950 Mx	49.5 µWb
P_c Coefficient	1.09	High (Stable)

Total magnetic flux passing through the pole surface. Key data when building generators and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 10x15 / N38

Environment	Effective steel pull	Effect
Air (land)	2.60 kg	Standard
Water (riverbed)	2.98 kg (+0.38 kg Buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

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 surface, the magnet retains merely ~20% of its max power.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically limits the holding force.

3. Thermal stability

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.09

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

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: 010005-2025

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This product is an exceptionally strong rod magnet, made from modern NdFeB material, which, at dimensions of Ø10x15 mm, guarantees optimal power. The MW 10x15 / N38 model is characterized by a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 2.60 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 25.51 N with a weight of only 8.84 g, this cylindrical magnet 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., 10.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø10x15), 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 Ø10x15 mm, which, at a weight of 8.84 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 2.60 kg (force ~25.51 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 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.

Strengths as well as weaknesses of rare earth magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:

They have constant strength, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
They are noted for resistance to demagnetization induced by external disturbances,
The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnets are characterized by very high magnetic induction on the outer side,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
Possibility of detailed modeling and adjusting to precise applications,
Versatile presence in advanced technology sectors – they find application in hard drives, electric motors, medical devices, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of NdFeB magnets:

At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and 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 advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Limited possibility of making nuts in the magnet and complicated shapes - preferred is a housing - magnet mounting.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to complicate diagnosis medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

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

The declared magnet strength refers to the limit force, measured under laboratory conditions, specifically:

using a sheet made of low-carbon steel, acting as a ideal flux conductor
possessing a massiveness of min. 10 mm to avoid saturation
characterized by even structure
without any insulating layer between the magnet and steel
during detachment in a direction perpendicular to the plane
at ambient temperature room level

Lifting capacity in real conditions – factors

In real-world applications, the actual holding force depends on several key aspects, presented from the most important:

Distance – existence of foreign body (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Steel grade – the best choice is pure iron steel. Hardened steels may attract less.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.

H&S for magnets

Fragile material

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Protect data

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

Avoid contact if allergic

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and opt for coated magnets.

Permanent damage

Avoid heat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Pinching danger

Danger of trauma: The attraction force is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Precision electronics

Note: neodymium magnets generate a field that confuses sensitive sensors. Maintain a separation from your mobile, device, and GPS.

Conscious usage

Exercise caution. Neodymium magnets act from a distance and connect with massive power, often faster than you can move away.

Swallowing risk

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep away from children and animals.

ICD Warning

People with a pacemaker have to maintain an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Fire warning

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

Danger! Want to know more? Read our article: Why are neodymium magnets dangerous?

MW 10x15 / N38 - cylindrical magnet

Need help making a decision?

MW 10x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - technical parameters

1. Sliding resistance

2. Plate thickness effect

3. Thermal stability

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

Chemical composition

Sustainability

Pulling force

Field Strength

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KM HF - 11,3 kg - magnetic bracket

Strengths as well as weaknesses of rare earth magnets.

Pros

Weaknesses

Lifting parameters

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

Lifting capacity in real conditions – factors

Fragile material

Protect data

Avoid contact if allergic

Permanent damage

Pinching danger

Precision electronics

Conscious usage

Swallowing risk

ICD Warning

Fire warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C