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Neodymium magnets – strongest on the market

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Magnet fishing sets (hobbyists)

Begin your hobby involving underwater treasure hunting! Our specialized grips (F200, F400) provide safety guarantee and huge lifting capacity. Solid, corrosion-resistant housing and reinforced ropes will perform in challenging water conditions.

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Reliable solutions for fixing non-invasive. Threaded mounts (external or internal) provide quick improvement of work on production halls. Perfect for installing lamps, detectors and ads.

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MW 10x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010004

GTIN/EAN: 5906301810032

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

5.89 g

Magnetization Direction

↑ axial

Load capacity

3.18 kg / 31.15 N

Magnetic Induction

553.84 mT / 5538 Gs

Coating

[NiCuNi] Nickel

4.31 with VAT / pcs + price for transport

3.50 ZŁ net + 23% VAT / pcs

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Technical - MW 10x10 / N38 - cylindrical magnet

Specification / characteristics - MW 10x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010004
GTIN/EAN 5906301810032
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 10 mm [±0,1 mm]
Weight 5.89 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.18 kg / 31.15 N
Magnetic Induction ~ ? 553.84 mT / 5538 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x10 / 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

Engineering analysis of the assembly - report

Presented values are the outcome of a physical analysis. Results rely on algorithms for the class Nd2Fe14B. Real-world performance may differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MW 10x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg) Risk Status
0 mm 5534 Gs
553.4 mT
3.18 kg / 3180.0 g
31.2 N
warning
1 mm 4428 Gs
442.8 mT
2.04 kg / 2036.1 g
20.0 N
warning
2 mm 3420 Gs
342.0 mT
1.21 kg / 1214.8 g
11.9 N
low risk
3 mm 2597 Gs
259.7 mT
0.70 kg / 700.2 g
6.9 N
low risk
5 mm 1498 Gs
149.8 mT
0.23 kg / 232.9 g
2.3 N
low risk
10 mm 469 Gs
46.9 mT
0.02 kg / 22.9 g
0.2 N
low risk
15 mm 198 Gs
19.8 mT
0.00 kg / 4.1 g
0.0 N
low risk
20 mm 101 Gs
10.1 mT
0.00 kg / 1.1 g
0.0 N
low risk
30 mm 36 Gs
3.6 mT
0.00 kg / 0.1 g
0.0 N
low risk
50 mm 9 Gs
0.9 mT
0.00 kg / 0.0 g
0.0 N
low risk

Table 2: Sliding force (wall)
MW 10x10 / N38

Distance (mm) Friction coefficient Pull Force (kg)
0 mm Stal (~0.2) 0.64 kg / 636.0 g
6.2 N
1 mm Stal (~0.2) 0.41 kg / 408.0 g
4.0 N
2 mm Stal (~0.2) 0.24 kg / 242.0 g
2.4 N
3 mm Stal (~0.2) 0.14 kg / 140.0 g
1.4 N
5 mm Stal (~0.2) 0.05 kg / 46.0 g
0.5 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

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 10x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.95 kg / 954.0 g
9.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.64 kg / 636.0 g
6.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.32 kg / 318.0 g
3.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.59 kg / 1590.0 g
15.6 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x10 / N38

Steel thickness (mm) % power Real pull force (kg)
0.5 mm
10%
0.32 kg / 318.0 g
3.1 N
1 mm
25%
0.80 kg / 795.0 g
7.8 N
2 mm
50%
1.59 kg / 1590.0 g
15.6 N
5 mm
100%
3.18 kg / 3180.0 g
31.2 N
10 mm
100%
3.18 kg / 3180.0 g
31.2 N

Table 5: Thermal resistance (stability) - power drop
MW 10x10 / N38

Ambient temp. (°C) Power loss Remaining pull Status
20 °C 0.0% 3.18 kg / 3180.0 g
31.2 N
OK
40 °C -2.2% 3.11 kg / 3110.0 g
30.5 N
OK
60 °C -4.4% 3.04 kg / 3040.1 g
29.8 N
OK
80 °C -6.6% 2.97 kg / 2970.1 g
29.1 N
100 °C -28.8% 2.26 kg / 2264.2 g
22.2 N

Table 6: Two magnets (repulsion) - field collision
MW 10x10 / N38

Gap (mm) Attraction (kg) (N-S) Repulsion (kg) (N-N)
0 mm 14.83 kg / 14830 g
145.5 N
6 003 Gs
N/A
1 mm 12.01 kg / 12012 g
117.8 N
9 962 Gs
10.81 kg / 10811 g
106.1 N
~0 Gs
2 mm 9.50 kg / 9495 g
93.1 N
8 857 Gs
8.55 kg / 8546 g
83.8 N
~0 Gs
3 mm 7.38 kg / 7381 g
72.4 N
7 809 Gs
6.64 kg / 6643 g
65.2 N
~0 Gs
5 mm 4.31 kg / 4311 g
42.3 N
5 968 Gs
3.88 kg / 3880 g
38.1 N
~0 Gs
10 mm 1.09 kg / 1086 g
10.7 N
2 996 Gs
0.98 kg / 978 g
9.6 N
~0 Gs
20 mm 0.11 kg / 107 g
1.0 N
939 Gs
0.10 kg / 96 g
0.9 N
~0 Gs
50 mm 0.00 kg / 2 g
0.0 N
116 Gs
0.00 kg / 0 g
0.0 N
~0 Gs

Table 7: Protective zones (electronics) - warnings
MW 10x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Remote 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

Table 8: Collisions (kinetic energy) - warning
MW 10x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.54 km/h
(6.54 m/s)
0.13 J
30 mm 40.59 km/h
(11.27 m/s)
0.37 J
50 mm 52.40 km/h
(14.56 m/s)
0.62 J
100 mm 74.10 km/h
(20.58 m/s)
1.25 J

Table 9: Surface protection spec
MW 10x10 / 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 (Flux)
MW 10x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 481 Mx 44.8 µWb
Pc Coefficient 0.89 High (Stable)

Table 11: Submerged application
MW 10x10 / N38

Environment Effective steel pull Effect
Air (land) 3.18 kg Standard
Water (riverbed) 3.64 kg
(+0.46 kg Buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Wall mount (shear)

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

2. Plate thickness effect

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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
Material specification
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: 010004-2025
Magnet Unit Converter
Magnet pull force

Magnetic Field

See also proposals

This product is a very strong cylindrical magnet, produced from advanced NdFeB material, which, with dimensions of Ø10x10 mm, guarantees optimal power. The MW 10x10 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 3.18 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 31.15 N with a weight of only 5.89 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 10.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø10x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø10x10 mm, which, at a weight of 5.89 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 3.18 kg (force ~31.15 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 and cons of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
  • They show high resistance to demagnetization induced by external disturbances,
  • By covering with a shiny layer of nickel, the element gains an nice look,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
  • Thanks to freedom in designing and the ability to modify to unusual requirements,
  • Key role in future technologies – they are used in HDD drives, drive modules, medical equipment, as well as technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Disadvantages

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also increases their durability
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in creating threads and complex shapes in magnets, we propose using a housing - magnetic mount.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Highest magnetic holding forcewhat it depends on?

Information about lifting capacity was determined for ideal contact conditions, taking into account:
  • using a base made of low-carbon steel, acting as a magnetic yoke
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • without the slightest clearance between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

In real-world applications, the real power results from many variables, presented from most significant:
  • Clearance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
  • Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
  • Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

H&S for magnets
Metal Allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and use protective gear.

Fire risk

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Demagnetization risk

Control the heat. Heating the magnet to high heat will destroy its properties and pulling force.

Magnet fragility

Watch out for shards. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.

Serious injuries

Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Medical implants

Warning for patients: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Protect data

Avoid bringing magnets near a purse, laptop, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Product not for children

Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Store away from children and animals.

Conscious usage

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

Phone sensors

Remember: neodymium magnets generate a field that interferes with sensitive sensors. Maintain a separation from your phone, device, and navigation systems.

Caution! Details about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98