Product available Ships today (order by 14:00)

MW 10x20 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010007

GTIN/EAN: 5906301810063

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

11.78 g

Magnetization Direction

↑ axial

Load capacity

2.23 kg / 21.88 N

Magnetic Induction

600.73 mT / 6007 Gs

Coating

[NiCuNi] Nickel

4.92 with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
4.00 ZŁ
4.92 ZŁ
price from 150 pcs
3.76 ZŁ
4.62 ZŁ
price from 650 pcs
3.52 ZŁ
4.33 ZŁ
Need advice?

Call us now +48 22 499 98 98 alternatively let us know through inquiry form our website.
Weight along with appearance of a neodymium magnet can be analyzed using our modular calculator.

Orders submitted before 14:00 will be dispatched today!

Technical data - MW 10x20 / N38 - cylindrical magnet

Specification / characteristics - MW 10x20 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010007
GTIN/EAN 5906301810063
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 20 mm [±0,1 mm]
Weight 11.78 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.23 kg / 21.88 N
Magnetic Induction ~ ? 600.73 mT / 6007 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x20 / 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

Physical analysis of the magnet - data

Presented information represent the direct effect of a engineering calculation. Values rely on algorithms for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - characteristics
MW 10x20 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6003 Gs
600.3 mT
2.23 kg / 4.92 LBS
2230.0 g / 21.9 N
warning
1 mm 4815 Gs
481.5 mT
1.44 kg / 3.16 LBS
1435.1 g / 14.1 N
low risk
2 mm 3743 Gs
374.3 mT
0.87 kg / 1.91 LBS
867.2 g / 8.5 N
low risk
3 mm 2869 Gs
286.9 mT
0.51 kg / 1.12 LBS
509.3 g / 5.0 N
low risk
5 mm 1696 Gs
169.6 mT
0.18 kg / 0.39 LBS
177.9 g / 1.7 N
low risk
10 mm 570 Gs
57.0 mT
0.02 kg / 0.04 LBS
20.1 g / 0.2 N
low risk
15 mm 256 Gs
25.6 mT
0.00 kg / 0.01 LBS
4.1 g / 0.0 N
low risk
20 mm 137 Gs
13.7 mT
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
low risk
30 mm 54 Gs
5.4 mT
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
low risk
50 mm 15 Gs
1.5 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Vertical capacity (wall)
MW 10x20 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.45 kg / 0.98 LBS
446.0 g / 4.4 N
1 mm Stal (~0.2) 0.29 kg / 0.63 LBS
288.0 g / 2.8 N
2 mm Stal (~0.2) 0.17 kg / 0.38 LBS
174.0 g / 1.7 N
3 mm Stal (~0.2) 0.10 kg / 0.22 LBS
102.0 g / 1.0 N
5 mm Stal (~0.2) 0.04 kg / 0.08 LBS
36.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 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: Vertical assembly (sliding) - behavior on slippery surfaces
MW 10x20 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.67 kg / 1.47 LBS
669.0 g / 6.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.45 kg / 0.98 LBS
446.0 g / 4.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.22 kg / 0.49 LBS
223.0 g / 2.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.12 kg / 2.46 LBS
1115.0 g / 10.9 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x20 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.22 kg / 0.49 LBS
223.0 g / 2.2 N
1 mm
25%
0.56 kg / 1.23 LBS
557.5 g / 5.5 N
2 mm
50%
1.12 kg / 2.46 LBS
1115.0 g / 10.9 N
3 mm
75%
1.67 kg / 3.69 LBS
1672.5 g / 16.4 N
5 mm
100%
2.23 kg / 4.92 LBS
2230.0 g / 21.9 N
10 mm
100%
2.23 kg / 4.92 LBS
2230.0 g / 21.9 N
11 mm
100%
2.23 kg / 4.92 LBS
2230.0 g / 21.9 N
12 mm
100%
2.23 kg / 4.92 LBS
2230.0 g / 21.9 N

Table 5: Thermal resistance (material behavior) - power drop
MW 10x20 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.23 kg / 4.92 LBS
2230.0 g / 21.9 N
OK
40 °C -2.2% 2.18 kg / 4.81 LBS
2180.9 g / 21.4 N
OK
60 °C -4.4% 2.13 kg / 4.70 LBS
2131.9 g / 20.9 N
OK
80 °C -6.6% 2.08 kg / 4.59 LBS
2082.8 g / 20.4 N
100 °C -28.8% 1.59 kg / 3.50 LBS
1587.8 g / 15.6 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 10x20 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 17.45 kg / 38.46 LBS
6 140 Gs
2.62 kg / 5.77 LBS
2617 g / 25.7 N
N/A
1 mm 14.15 kg / 31.20 LBS
10 813 Gs
2.12 kg / 4.68 LBS
2123 g / 20.8 N
12.74 kg / 28.08 LBS
~0 Gs
2 mm 11.23 kg / 24.75 LBS
9 631 Gs
1.68 kg / 3.71 LBS
1684 g / 16.5 N
10.11 kg / 22.28 LBS
~0 Gs
3 mm 8.78 kg / 19.35 LBS
8 515 Gs
1.32 kg / 2.90 LBS
1316 g / 12.9 N
7.90 kg / 17.41 LBS
~0 Gs
5 mm 5.21 kg / 11.48 LBS
6 559 Gs
0.78 kg / 1.72 LBS
781 g / 7.7 N
4.69 kg / 10.33 LBS
~0 Gs
10 mm 1.39 kg / 3.07 LBS
3 391 Gs
0.21 kg / 0.46 LBS
209 g / 2.0 N
1.25 kg / 2.76 LBS
~0 Gs
20 mm 0.16 kg / 0.35 LBS
1 140 Gs
0.02 kg / 0.05 LBS
24 g / 0.2 N
0.14 kg / 0.31 LBS
~0 Gs
50 mm 0.00 kg / 0.01 LBS
165 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
107 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
74 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
53 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
39 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
30 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Hazards (implants) - precautionary measures
MW 10x20 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.0 cm
Hearing aid 10 Gs (1.0 mT) 6.0 cm
Mechanical watch 20 Gs (2.0 mT) 4.5 cm
Mobile device 40 Gs (4.0 mT) 3.5 cm
Car key 50 Gs (5.0 mT) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Impact energy (cracking risk) - collision effects
MW 10x20 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 13.95 km/h
(3.88 m/s)
0.09 J
30 mm 24.03 km/h
(6.68 m/s)
0.26 J
50 mm 31.03 km/h
(8.62 m/s)
0.44 J
100 mm 43.88 km/h
(12.19 m/s)
0.88 J

Table 9: Anti-corrosion coating durability
MW 10x20 / 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: Electrical data (Pc)
MW 10x20 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 223 Mx 52.2 µWb
Pc Coefficient 1.21 High (Stable)

Table 11: Physics of underwater searching
MW 10x20 / N38

Environment Effective steel pull Effect
Air (land) 2.23 kg Standard
Water (riverbed) 2.55 kg
(+0.32 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

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

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.21

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 and environmental data
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: 010007-2026
Magnet Unit Converter
Force (pull)

Field Strength

View more proposals

This product is a very strong cylindrical magnet, produced from durable NdFeB material, which, with dimensions of Ø10x20 mm, guarantees optimal power. The MW 10x20 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 2.23 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 21.88 N with a weight of only 11.78 g, this rod is indispensable in miniature devices 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 chipping the coating of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø10x20), 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 10 mm and height 20 mm. The key parameter here is the holding force amounting to approximately 2.23 kg (force ~21.88 N), which, with such compact dimensions, proves the high power of the NdFeB material. 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 and disadvantages of neodymium magnets.

Pros

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their strength remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnets have extremely high magnetic induction on the surface,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures approaching 230°C and above...
  • Possibility of accurate creating as well as adapting to concrete needs,
  • Key role in advanced technology sectors – they find application in hard drives, drive modules, medical devices, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in miniature devices

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complex forms in magnets, we propose using a housing - magnetic mount.
  • Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum holding power of the magnet – what it depends on?

Magnet power is the result of a measurement for the most favorable conditions, including:
  • using a sheet made of high-permeability steel, acting as a circuit closing element
  • with a cross-section minimum 10 mm
  • with a plane perfectly flat
  • with direct contact (without impurities)
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

During everyday use, the real power depends on many variables, presented from crucial:
  • Distance – existence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin plate causes magnetic saturation, causing part of the flux to be escaped into the air.
  • Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Safety rules for work with neodymium magnets
Conscious usage

Handle magnets with awareness. Their huge power can surprise even experienced users. Stay alert and respect their power.

Danger to pacemakers

Individuals with a heart stimulator should maintain an safe separation from magnets. The magnetism can interfere with the operation of the implant.

Phone sensors

Remember: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.

Choking Hazard

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Machining danger

Fire warning: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Heat warning

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

Beware of splinters

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Bodily injuries

Danger of trauma: The attraction force is so great that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.

Electronic devices

Powerful magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Allergic reactions

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness happens, cease working with magnets and use protective gear.

Security! Need more info? Check our post: Why are neodymium magnets dangerous?