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MW 10x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010008

GTIN/EAN: 5906301810070

5.00
Load capacity 2.15 kg / 21.08 N Magnetic Induction 318.70 mT / 3187 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
1.77 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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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 / 21.08 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
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 modeling of the product - technical parameters

The following information represent the result of a mathematical calculation. Results are based on algorithms for the material Nd2Fe14B. Operational performance may deviate from the simulation results. Please consider these calculations as a reference point for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
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
strong
1 mm 2657 Gs
265.7 mT
1.50 kg / 3.30 lbs
1496.2 g / 14.7 N
weak grip
2 mm 2081 Gs
208.1 mT
0.92 kg / 2.02 lbs
918.1 g / 9.0 N
weak grip
3 mm 1573 Gs
157.3 mT
0.52 kg / 1.16 lbs
524.4 g / 5.1 N
weak grip
5 mm 874 Gs
87.4 mT
0.16 kg / 0.36 lbs
161.7 g / 1.6 N
weak grip
10 mm 241 Gs
24.1 mT
0.01 kg / 0.03 lbs
12.3 g / 0.1 N
weak grip
15 mm 92 Gs
9.2 mT
0.00 kg / 0.00 lbs
1.8 g / 0.0 N
weak grip
20 mm 44 Gs
4.4 mT
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
weak grip
30 mm 14 Gs
1.4 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip

Table 2: Slippage 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: Steel thickness (saturation) - power losses
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) - power drop
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 (repulsion) - forces in the system
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: Protective zones (implants) - warnings
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
Timepiece 20 Gs (2.0 mT) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Remote 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 (cracking risk) - collision effects
MW 10x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.76 km/h
(7.16 m/s)
0.05 J
30 mm 25.85 km/h
(7.18 m/s)
0.05 J
50 mm 25.85 km/h
(7.18 m/s)
0.05 J
100 mm 25.85 km/h
(7.18 m/s)
0.05 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: Underwater work (magnet fishing)
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Wall mount (shear)

*Caution: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Temperature resistance

*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) = 0.40

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.

Engineering data and GPSR

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%

Ecology and recycling (GPSR)

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

Pulling force


Field Strength

Other deals

This product is an extremely powerful rod magnet, composed of durable NdFeB material, which, with dimensions of Ø10x3 mm, guarantees the highest energy density. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 2.15 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 21.08 N with a weight of only 1.77 g, this rod is indispensable in electronics and wherever every gram matters.
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 two-component 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.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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 available off-the-shelf in our store.
This model is characterized by dimensions Ø10x3 mm, which, at a weight of 1.77 g, makes it an element with high magnetic energy density. The value of 21.08 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 protects the surface 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 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 diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • They do not lose strength, even over approximately ten years – the drop in lifting capacity is only ~1% (based on measurements),
  • They maintain their magnetic properties even under strong external field,
  • A magnet with a shiny silver surface looks better,
  • Magnets have exceptionally strong magnetic induction on the outer side,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in shaping and the capacity to adapt to complex applications,
  • Huge importance in advanced technology sectors – they are utilized in magnetic memories, brushless drives, medical equipment, as well as industrial machines.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Cons of neodymium magnets and proposals for their use:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • NdFeB magnets lose power 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 recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • Due to limitations in creating nuts and complex forms in magnets, we propose using cover - magnetic mount.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small components of these products can complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what contributes to it?

The lifting capacity listed is a result of laboratory testing executed under the following configuration:
  • with the contact of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • with a cross-section no less than 10 mm
  • characterized by even structure
  • under conditions of gap-free contact (surface-to-surface)
  • under vertical application of breakaway force (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

Please note that the application force may be lower subject to the following factors, in order of importance:
  • Distance – existence of any layer (paint, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
  • Surface condition – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the load capacity.

Precautions when working with NdFeB magnets
Magnetic interference

Be aware: rare earth magnets generate a field that disrupts precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Do not drill into magnets

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Physical harm

Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!

Power loss in heat

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Medical implants

Patients with a heart stimulator must keep an large gap from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Respect the power

Be careful. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.

Magnetic media

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Avoid contact if allergic

Studies show that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact and choose coated magnets.

Magnets are brittle

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them shattering into small pieces.

No play value

Always store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are life-threatening.

Important! Looking for details? Read our article: Are neodymium magnets dangerous?