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MW 10x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010008

GTIN/EAN: 5906301810070

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.77 g

Magnetization Direction

↑ axial

Load capacity

2.15 kg / 21.04 N

Magnetic Induction

318.70 mT / 3187 Gs

Coating

[NiCuNi] Nickel

0.726 with VAT / pcs + price for transport

0.590 ZŁ net + 23% VAT / pcs

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Technical details - MW 10x3 / N38 - cylindrical magnet

Specification / characteristics - MW 10x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010008
GTIN/EAN 5906301810070
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 3 mm [±0,1 mm]
Weight 1.77 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.15 kg / 21.04 N
Magnetic Induction ~ ? 318.70 mT / 3187 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x3 / 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

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 simulation of the magnet - technical parameters

The following information represent the outcome of a mathematical simulation. Results were calculated on models for the material Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these data as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - power drop
MW 10x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3185 Gs
318.5 mT
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
medium risk
1 mm 2657 Gs
265.7 mT
1.50 kg / 3.30 LBS
1496.2 g / 14.7 N
low risk
2 mm 2081 Gs
208.1 mT
0.92 kg / 2.02 LBS
918.1 g / 9.0 N
low risk
3 mm 1573 Gs
157.3 mT
0.52 kg / 1.16 LBS
524.4 g / 5.1 N
low risk
5 mm 874 Gs
87.4 mT
0.16 kg / 0.36 LBS
161.7 g / 1.6 N
low risk
10 mm 241 Gs
24.1 mT
0.01 kg / 0.03 LBS
12.3 g / 0.1 N
low risk
15 mm 92 Gs
9.2 mT
0.00 kg / 0.00 LBS
1.8 g / 0.0 N
low risk
20 mm 44 Gs
4.4 mT
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
low risk
30 mm 14 Gs
1.4 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Shear load (vertical surface)
MW 10x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.43 kg / 0.95 LBS
430.0 g / 4.2 N
1 mm Stal (~0.2) 0.30 kg / 0.66 LBS
300.0 g / 2.9 N
2 mm Stal (~0.2) 0.18 kg / 0.41 LBS
184.0 g / 1.8 N
3 mm Stal (~0.2) 0.10 kg / 0.23 LBS
104.0 g / 1.0 N
5 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 10x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.64 kg / 1.42 LBS
645.0 g / 6.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.08 kg / 2.37 LBS
1075.0 g / 10.5 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 10x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
1 mm
25%
0.54 kg / 1.18 LBS
537.5 g / 5.3 N
2 mm
50%
1.08 kg / 2.37 LBS
1075.0 g / 10.5 N
3 mm
75%
1.61 kg / 3.55 LBS
1612.5 g / 15.8 N
5 mm
100%
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
10 mm
100%
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
11 mm
100%
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
12 mm
100%
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N

Table 5: Thermal resistance (stability) - resistance threshold
MW 10x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
OK
40 °C -2.2% 2.10 kg / 4.64 LBS
2102.7 g / 20.6 N
OK
60 °C -4.4% 2.06 kg / 4.53 LBS
2055.4 g / 20.2 N
80 °C -6.6% 2.01 kg / 4.43 LBS
2008.1 g / 19.7 N
100 °C -28.8% 1.53 kg / 3.37 LBS
1530.8 g / 15.0 N

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 10x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.91 kg / 10.83 LBS
4 754 Gs
0.74 kg / 1.62 LBS
737 g / 7.2 N
N/A
1 mm 4.18 kg / 9.22 LBS
5 877 Gs
0.63 kg / 1.38 LBS
627 g / 6.2 N
3.76 kg / 8.30 LBS
~0 Gs
2 mm 3.42 kg / 7.54 LBS
5 314 Gs
0.51 kg / 1.13 LBS
513 g / 5.0 N
3.08 kg / 6.78 LBS
~0 Gs
3 mm 2.71 kg / 5.98 LBS
4 732 Gs
0.41 kg / 0.90 LBS
407 g / 4.0 N
2.44 kg / 5.38 LBS
~0 Gs
5 mm 1.59 kg / 3.52 LBS
3 630 Gs
0.24 kg / 0.53 LBS
239 g / 2.3 N
1.44 kg / 3.16 LBS
~0 Gs
10 mm 0.37 kg / 0.81 LBS
1 747 Gs
0.06 kg / 0.12 LBS
55 g / 0.5 N
0.33 kg / 0.73 LBS
~0 Gs
20 mm 0.03 kg / 0.06 LBS
483 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
0.03 kg / 0.06 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
48 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
29 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
19 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
13 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
9 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
7 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 10x3 / 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) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 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

Table 8: Collisions (kinetic energy) - warning
MW 10x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 35.27 km/h
(9.80 m/s)
0.08 J
30 mm 60.88 km/h
(16.91 m/s)
0.25 J
50 mm 78.60 km/h
(21.83 m/s)
0.42 J
100 mm 111.15 km/h
(30.88 m/s)
0.84 J

Table 9: Coating parameters (durability)
MW 10x3 / 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)

Table 10: Construction data (Flux)
MW 10x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 694 Mx 26.9 µWb
Pc Coefficient 0.40 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 10x3 / N38

Environment Effective steel pull Effect
Air (land) 2.15 kg Standard
Water (riverbed) 2.46 kg
(+0.31 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Vertical hold

*Note: On a vertical surface, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Temperature resistance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.40

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 Pc (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 Pc 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: 010008-2026
Quick Unit Converter
Force (pull)

Magnetic Induction

See also products

This product is an incredibly powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø10x3 mm, guarantees maximum efficiency. The MW 10x3 / N38 component is characterized by an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 2.15 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 21.04 N with a weight of only 1.77 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø10x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 3 mm. The value of 21.04 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.77 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 3 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 through the diameter if your project requires it.

Pros as well as cons of neodymium magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain attractive force for around ten years – the drop is just ~1% (based on simulations),
  • Neodymium magnets are highly resistant to demagnetization caused by external magnetic fields,
  • The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to look better,
  • They are known for high magnetic induction at the operating surface, which increases their power,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to the option of flexible shaping and customization to unique solutions, NdFeB magnets can be modeled in a broad palette of geometric configurations, which makes them more universal,
  • Wide application in innovative solutions – they are used in computer drives, electric drive systems, precision medical tools, as well as industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • 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
  • Limited possibility of producing nuts in the magnet and complicated forms - recommended is a housing - magnet mounting.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Magnetic strength at its maximum – what affects it?

Breakaway force was determined for the most favorable conditions, including:
  • with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • with a cross-section of at least 10 mm
  • characterized by even structure
  • with direct contact (without coatings)
  • for force applied at a right angle (pull-off, not shear)
  • at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

In practice, the real power results from many variables, ranked from crucial:
  • Distance – existence of any layer (rust, dirt, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
  • Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
  • Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was tested 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’s surface and the plate reduces the load capacity.

H&S for magnets
Magnetic media

Equipment safety: Strong magnets can damage payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Thermal limits

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

Skin irritation risks

It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands or opt for coated magnets.

Safe operation

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Magnetic interference

Note: rare earth magnets generate a field that interferes with precision electronics. Maintain a safe distance from your phone, tablet, and GPS.

Material brittleness

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

Swallowing risk

Product intended for adults. Small elements can be swallowed, leading to severe trauma. Store out of reach of children and animals.

Life threat

Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Serious injuries

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!

Dust is flammable

Powder produced during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Danger! More info about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98