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MW 12x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010017

GTIN/EAN: 5906301810162

5.00
Load capacity 1.39 kg / 13.66 N Magnetic Induction 195.97 mT / 1960 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
1.7 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
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1.132 zł with VAT / pcs + price for transport

0.920 zł net + 23% VAT / pcs

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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.

PDF report Calculator
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Give us a call +48 888 99 98 98 if you prefer contact us using our online form the contact form page.
Parameters and form of a neodymium magnet can be analyzed using our force calculator.

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Technical data - 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

Engineering modeling of the product - data

These information represent the direct effect of a physical analysis. Results are based on algorithms for the material Nd2Fe14B. Real-world performance might slightly deviate from the simulation results. Use these data as a supplementary guide for designers.

Table 1: Static force (force vs distance) - power drop
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
 safe
1 mm 1753 Gs
175.3 mT
 1.11 kg / 2.45 pounds
1113.5 g / 10.9 N
 safe
2 mm 1479 Gs
147.9 mT
 0.79 kg / 1.75 pounds
791.7 g / 7.8 N
 safe
3 mm 1196 Gs
119.6 mT
 0.52 kg / 1.14 pounds
518.4 g / 5.1 N
 safe
5 mm 738 Gs
73.8 mT
 0.20 kg / 0.44 pounds
197.4 g / 1.9 N
 safe
10 mm 229 Gs
22.9 mT
 0.02 kg / 0.04 pounds
19.0 g / 0.2 N
 safe
15 mm 90 Gs
9.0 mT
 0.00 kg / 0.01 pounds
2.9 g / 0.0 N
 safe
20 mm 43 Gs
4.3 mT
 0.00 kg / 0.00 pounds
0.7 g / 0.0 N
 safe
30 mm 14 Gs
1.4 mT
 0.00 kg / 0.00 pounds
0.1 g / 0.0 N
 safe
50 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Pulling power drops drastically with every mm of distance. Keep in mind that even a microscopic distance (e.g., dirt, paint, dust) significantly reduces the pull force. Magnetic products work optimally at the point of direct contact; gap drastically cuts the force. Analyze how rapidly the pull force fall, when the product does not adhere directly to the steel surface. When calculating the mounting, eliminate additional spacers.

Table 2: Sliding capacity (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
The following data calculates the estimated force necessary to start the slippage of the magnet downwards along a vertical steel wall (considering typical friction coefficient). The holding force varies with the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
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
When hanging a holder on a vertical plane (e.g., a board), it will maintain barely about 1/5 of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that magnets slide down easier than they pop off the substrate. Want to create a wall mount? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a much lighter load. Utilizing a rubberized layer can effectively raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
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
A thin sheet is not enough to focus the entire magnetic field, which wastes potential of the holder. If you install a neodymium to a weak sheet, the flux will penetrate right through and the pull force will drop sharply. To utilize the maximum of this neodymium's power, you require a sufficiently solid piece of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the product shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
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
Classic neodymiums change their properties strength past the thermal threshold. Protect against heat – excessive heat can permanently destroy this magnet. With increasing heat, the neodymium's force briefly lowers. Avoid using this product close to heaters exceeding its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.
*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
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
Two magnetic products attract each other from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Want to build a strong closure? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the pinch force is extreme. The levitation is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode drops to ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Note: Figures apply to friction force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - 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
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
Powerful magnet radiation poses a real danger to electronic devices as well as pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation acts through matter and plastic. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 12x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.16 km/h
(6.71 m/s)
 0.04 J
30 mm 24.32 km/h
(6.75 m/s)
 0.04 J
50 mm 24.32 km/h
(6.76 m/s)
 0.04 J
100 mm 24.32 km/h
(6.76 m/s)
 0.04 J
Neodymium magnets are delicate – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Surface protection spec
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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

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)
Total magnetic flux passing through the magnet pole. Key data for generator designers as well as sensors. The Pc coefficient defines the magnet's operating point.

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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) drastically reduces 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

Elemental analysis

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%

Environmental data

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
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This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 13.66 N with a weight of only 1.7 g, this rod is indispensable in electronics and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for the majority 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 (Ø12x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
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 key parameter here is the lifting capacity amounting to approximately 1.39 kg (force ~13.66 N), which, with such defined dimensions, proves the high grade 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 12 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.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They retain magnetic properties for almost ten years – the loss is just ~1% (in theory),
  • Neodymium magnets are characterized by extremely resistant to loss of magnetic properties caused by external interference,
  • In other words, due to the shiny layer of silver, the element looks attractive,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Considering the ability of accurate molding and adaptation to custom requirements, magnetic components can be manufactured in a broad palette of geometric configurations, which amplifies use scope,
  • Wide application in innovative solutions – they are used in computer drives, electric drive systems, medical devices, also multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium 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 suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We suggest cover - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what it depends on?

Holding force of 1.39 kg is a theoretical maximum value executed under standard conditions:
  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • with a plane free of scratches
  • without any air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Magnet lifting force in use – key factors

Bear in mind that the working load will differ depending on elements below, starting with the most relevant:
  • Distance – existence of foreign body (rust, tape, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel attracts best. Alloy steels decrease magnetic permeability and lifting capacity.
  • Plate texture – ground elements ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

H&S for magnets
Mechanical processing

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Electronic hazard

Do not bring magnets near a purse, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them breaking into shards.

Permanent damage

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its magnetic structure and strength.

Skin irritation risks

Studies show that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or choose versions in plastic housing.

GPS Danger

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Adults only

These products are not toys. Swallowing a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Physical harm

Large magnets can smash fingers in a fraction of a second. Never put your hand betwixt two attracting surfaces.

Life threat

Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Do not underestimate power

Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Important! Want to know more? Check our post: Are neodymium magnets dangerous?