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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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Technical details - 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 simulation of the product - data

The following information constitute the direct effect of a physical analysis. Results rely on models for the material Nd2Fe14B. Actual performance may differ. Please consider these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - characteristics
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

Table 2: Vertical load (vertical surface)
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: Vertical assembly (shearing) - 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

Table 4: Material efficiency (substrate influence) - 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

Table 5: Thermal resistance (stability) - 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

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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: Protective zones (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) - collision effects
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: Electrical data (Pc)
MW 12x2 / N38

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

Table 11: Submerged application
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

*Note: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel saturation

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

3. Temperature resistance

*For N38 grade, the safety 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 and environmental data
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%
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

Magnetic Induction

Other products

This product is an incredibly powerful cylinder magnet, composed of durable NdFeB material, which, at dimensions of Ø12x2 mm, guarantees maximum efficiency. The MW 12x2 / N38 component is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.39 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced Hall effect sensors, and efficient filters, 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 very precise dimensions, 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 industry, anaerobic resins 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 an optimal price-to-power ratio and high resistance to demagnetization. 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 in continuous sale 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 holding force amounting to approximately 1.39 kg (force ~13.66 N), which, with such compact 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 and weaknesses of Nd2Fe14B magnets.

Benefits

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
  • They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
  • By covering with a shiny layer of nickel, the element has an nice look,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of custom shaping and modifying to atypical needs,
  • Wide application in modern industrial fields – they find application in computer drives, brushless drives, precision medical tools, also industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and 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
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making threads in the magnet and complex shapes - recommended is cover - magnetic holder.
  • Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these products can complicate diagnosis medical when they are in the body.
  • Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

Magnet power is the result of a measurement for ideal contact conditions, assuming:
  • using a base made of low-carbon steel, acting as a ideal flux conductor
  • with a cross-section minimum 10 mm
  • with a surface perfectly flat
  • without any air gap between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

In real-world applications, the actual lifting capacity is determined by a number of factors, presented from most significant:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Surface finish – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Thermal factor – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets
Fragile material

NdFeB magnets are ceramic materials, which means they are prone to chipping. Collision of two magnets leads to them cracking into small pieces.

Dust explosion hazard

Powder created during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Bodily injuries

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

ICD Warning

People with a ICD must keep an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.

GPS and phone interference

GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Danger to the youngest

NdFeB magnets are not intended for children. Accidental ingestion of a few magnets may result in them attracting across intestines, which poses a critical condition and requires immediate surgery.

Metal Allergy

Medical facts indicate that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from direct skin contact or choose versions in plastic housing.

Immense force

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Protect data

Avoid bringing magnets near a wallet, computer, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Heat warning

Avoid heat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Important! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98