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MW 12x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010017

GTIN/EAN: 5906301810162

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

1.7 g

Magnetization Direction

↑ axial

Load capacity

1.39 kg / 13.66 N

Magnetic Induction

195.97 mT / 1960 Gs

Coating

[NiCuNi] Nickel

1.132 with VAT / pcs + price for transport

0.920 ZŁ net + 23% VAT / pcs

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Physical properties - MW 12x2 / N38 - cylindrical magnet

Specification / characteristics - MW 12x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010017
GTIN/EAN 5906301810162
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 12 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 1.7 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.39 kg / 13.66 N
Magnetic Induction ~ ? 195.97 mT / 1960 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x2 / 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 modeling of the assembly - technical parameters

The following values constitute the result of a physical simulation. Values rely on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs distance) - interaction chart
MW 12x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1959 Gs
195.9 mT
1.39 kg / 3.06 pounds
1390.0 g / 13.6 N
low risk
1 mm 1753 Gs
175.3 mT
1.11 kg / 2.45 pounds
1113.5 g / 10.9 N
low risk
2 mm 1479 Gs
147.9 mT
0.79 kg / 1.75 pounds
791.7 g / 7.8 N
low risk
3 mm 1196 Gs
119.6 mT
0.52 kg / 1.14 pounds
518.4 g / 5.1 N
low risk
5 mm 738 Gs
73.8 mT
0.20 kg / 0.44 pounds
197.4 g / 1.9 N
low risk
10 mm 229 Gs
22.9 mT
0.02 kg / 0.04 pounds
19.0 g / 0.2 N
low risk
15 mm 90 Gs
9.0 mT
0.00 kg / 0.01 pounds
2.9 g / 0.0 N
low risk
20 mm 43 Gs
4.3 mT
0.00 kg / 0.00 pounds
0.7 g / 0.0 N
low risk
30 mm 14 Gs
1.4 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
low risk
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk

Table 2: Vertical load (wall)
MW 12x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.28 kg / 0.61 pounds
278.0 g / 2.7 N
1 mm Stal (~0.2) 0.22 kg / 0.49 pounds
222.0 g / 2.2 N
2 mm Stal (~0.2) 0.16 kg / 0.35 pounds
158.0 g / 1.5 N
3 mm Stal (~0.2) 0.10 kg / 0.23 pounds
104.0 g / 1.0 N
5 mm Stal (~0.2) 0.04 kg / 0.09 pounds
40.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (sliding) - vertical pull
MW 12x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.42 kg / 0.92 pounds
417.0 g / 4.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.28 kg / 0.61 pounds
278.0 g / 2.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.14 kg / 0.31 pounds
139.0 g / 1.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.70 kg / 1.53 pounds
695.0 g / 6.8 N

Table 4: Steel thickness (saturation) - power losses
MW 12x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.14 kg / 0.31 pounds
139.0 g / 1.4 N
1 mm
25%
0.35 kg / 0.77 pounds
347.5 g / 3.4 N
2 mm
50%
0.70 kg / 1.53 pounds
695.0 g / 6.8 N
3 mm
75%
1.04 kg / 2.30 pounds
1042.5 g / 10.2 N
5 mm
100%
1.39 kg / 3.06 pounds
1390.0 g / 13.6 N
10 mm
100%
1.39 kg / 3.06 pounds
1390.0 g / 13.6 N
11 mm
100%
1.39 kg / 3.06 pounds
1390.0 g / 13.6 N
12 mm
100%
1.39 kg / 3.06 pounds
1390.0 g / 13.6 N

Table 5: Working in heat (stability) - power drop
MW 12x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.39 kg / 3.06 pounds
1390.0 g / 13.6 N
OK
40 °C -2.2% 1.36 kg / 3.00 pounds
1359.4 g / 13.3 N
OK
60 °C -4.4% 1.33 kg / 2.93 pounds
1328.8 g / 13.0 N
80 °C -6.6% 1.30 kg / 2.86 pounds
1298.3 g / 12.7 N
100 °C -28.8% 0.99 kg / 2.18 pounds
989.7 g / 9.7 N

Table 6: Two magnets (repulsion) - field collision
MW 12x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.68 kg / 5.90 pounds
3 435 Gs
0.40 kg / 0.88 pounds
401 g / 3.9 N
N/A
1 mm 2.44 kg / 5.37 pounds
3 739 Gs
0.37 kg / 0.81 pounds
366 g / 3.6 N
2.19 kg / 4.84 pounds
~0 Gs
2 mm 2.14 kg / 4.73 pounds
3 507 Gs
0.32 kg / 0.71 pounds
322 g / 3.2 N
1.93 kg / 4.25 pounds
~0 Gs
3 mm 1.83 kg / 4.04 pounds
3 241 Gs
0.27 kg / 0.61 pounds
275 g / 2.7 N
1.65 kg / 3.63 pounds
~0 Gs
5 mm 1.24 kg / 2.74 pounds
2 671 Gs
0.19 kg / 0.41 pounds
187 g / 1.8 N
1.12 kg / 2.47 pounds
~0 Gs
10 mm 0.38 kg / 0.84 pounds
1 476 Gs
0.06 kg / 0.13 pounds
57 g / 0.6 N
0.34 kg / 0.75 pounds
~0 Gs
20 mm 0.04 kg / 0.08 pounds
458 Gs
0.01 kg / 0.01 pounds
5 g / 0.1 N
0.03 kg / 0.07 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
47 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
28 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
18 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
13 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
9 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
7 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
MW 12x2 / 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
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: Dynamics (cracking risk) - warning
MW 12x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 29.08 km/h
(8.08 m/s)
0.06 J
30 mm 49.95 km/h
(13.88 m/s)
0.16 J
50 mm 64.48 km/h
(17.91 m/s)
0.27 J
100 mm 91.19 km/h
(25.33 m/s)
0.55 J

Table 9: Corrosion resistance
MW 12x2 / 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 12x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 665 Mx 26.7 µWb
Pc Coefficient 0.25 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 12x2 / N38

Environment Effective steel pull Effect
Air (land) 1.39 kg Standard
Water (riverbed) 1.59 kg
(+0.20 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Wall mount (shear)

*Caution: On a vertical wall, the magnet retains just a fraction of its nominal pull.

2. Efficiency vs thickness

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

3. Heat tolerance

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.25

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
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: 010017-2026
Magnet Unit Converter
Magnet pull force

Field Strength

Other products

The offered product is an exceptionally strong rod magnet, made from advanced NdFeB material, which, with dimensions of Ø12x2 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 1.39 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 13.66 N with a weight of only 1.7 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability 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 the strongest magnets in the same volume (Ø12x2), 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 Ø12x2 mm, which, at a weight of 1.7 g, makes it an element with impressive magnetic energy density. The value of 13.66 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.7 g. 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 2 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • Neodymium magnets are characterized by extremely resistant to magnetic field loss caused by external magnetic fields,
  • In other words, due to the glossy finish of nickel, the element looks attractive,
  • Magnets exhibit impressive magnetic induction on the outer side,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to modularity in designing and the ability to modify to client solutions,
  • Significant place in modern technologies – they find application in hard drives, electromotive mechanisms, precision medical tools, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in miniature devices

Cons

Problematic aspects of neodymium magnets: weaknesses and usage proposals
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small components of these devices are able to be problematic in diagnostics medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Holding force of 1.39 kg is a measurement result conducted under the following configuration:
  • using a plate made of high-permeability steel, functioning as a magnetic yoke
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with an ground touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • during detachment in a direction perpendicular to the mounting surface
  • at ambient temperature room level

Practical aspects of lifting capacity – factors

In real-world applications, the actual lifting capacity is determined by many variables, listed from the most important:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter 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 penetrates through instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Cast iron may attract less.
  • Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Thermal environment – heating the magnet results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Safety rules for work with neodymium magnets
Sensitization to coating

It is widely known that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent direct skin contact and opt for versions in plastic housing.

Life threat

People with a heart stimulator should maintain an safe separation from magnets. The magnetism can stop the operation of the life-saving device.

Electronic hazard

Powerful magnetic fields can destroy records on payment cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Permanent damage

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Keep away from electronics

A strong magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Fragile material

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them cracking into shards.

Fire risk

Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Danger to the youngest

NdFeB magnets are not suitable for play. Accidental ingestion of several magnets can lead to them pinching intestinal walls, which poses a critical condition and requires urgent medical intervention.

Do not underestimate power

Handle magnets with awareness. Their huge power can shock even experienced users. Plan your moves and do not underestimate their power.

Hand protection

Pinching hazard: The pulling power is so great that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

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