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MW 12x1.5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010442

GTIN/EAN: 5906301811114

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

1.27 g

Magnetization Direction

↑ axial

Load capacity

0.87 kg / 8.51 N

Magnetic Induction

150.32 mT / 1503 Gs

Coating

[NiCuNi] Nickel

0.431 with VAT / pcs + price for transport

0.350 ZŁ net + 23% VAT / pcs

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Technical specification of the product - MW 12x1.5 / N38 - cylindrical magnet

Specification / characteristics - MW 12x1.5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010442
GTIN/EAN 5906301811114
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 1.5 mm [±0,1 mm]
Weight 1.27 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.87 kg / 8.51 N
Magnetic Induction ~ ? 150.32 mT / 1503 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x1.5 / 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

Physical modeling of the magnet - report

These information constitute the result of a mathematical simulation. Results are based on algorithms for the material Nd2Fe14B. Actual performance may differ. Use these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MW 12x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1503 Gs
150.3 mT
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
weak grip
1 mm 1365 Gs
136.5 mT
0.72 kg / 1.58 pounds
718.1 g / 7.0 N
weak grip
2 mm 1163 Gs
116.3 mT
0.52 kg / 1.15 pounds
521.4 g / 5.1 N
weak grip
3 mm 947 Gs
94.7 mT
0.35 kg / 0.76 pounds
345.7 g / 3.4 N
weak grip
5 mm 587 Gs
58.7 mT
0.13 kg / 0.29 pounds
132.6 g / 1.3 N
weak grip
10 mm 180 Gs
18.0 mT
0.01 kg / 0.03 pounds
12.5 g / 0.1 N
weak grip
15 mm 70 Gs
7.0 mT
0.00 kg / 0.00 pounds
1.9 g / 0.0 N
weak grip
20 mm 33 Gs
3.3 mT
0.00 kg / 0.00 pounds
0.4 g / 0.0 N
weak grip
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Shear hold (wall)
MW 12x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.17 kg / 0.38 pounds
174.0 g / 1.7 N
1 mm Stal (~0.2) 0.14 kg / 0.32 pounds
144.0 g / 1.4 N
2 mm Stal (~0.2) 0.10 kg / 0.23 pounds
104.0 g / 1.0 N
3 mm Stal (~0.2) 0.07 kg / 0.15 pounds
70.0 g / 0.7 N
5 mm Stal (~0.2) 0.03 kg / 0.06 pounds
26.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 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) - vertical pull
MW 12x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.26 kg / 0.58 pounds
261.0 g / 2.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.09 kg / 0.19 pounds
87.0 g / 0.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.44 kg / 0.96 pounds
435.0 g / 4.3 N

Table 4: Material efficiency (saturation) - power losses
MW 12x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.09 kg / 0.19 pounds
87.0 g / 0.9 N
1 mm
25%
0.22 kg / 0.48 pounds
217.5 g / 2.1 N
2 mm
50%
0.44 kg / 0.96 pounds
435.0 g / 4.3 N
3 mm
75%
0.65 kg / 1.44 pounds
652.5 g / 6.4 N
5 mm
100%
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
10 mm
100%
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
11 mm
100%
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
12 mm
100%
0.87 kg / 1.92 pounds
870.0 g / 8.5 N

Table 5: Thermal resistance (stability) - thermal limit
MW 12x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.87 kg / 1.92 pounds
870.0 g / 8.5 N
OK
40 °C -2.2% 0.85 kg / 1.88 pounds
850.9 g / 8.3 N
OK
60 °C -4.4% 0.83 kg / 1.83 pounds
831.7 g / 8.2 N
80 °C -6.6% 0.81 kg / 1.79 pounds
812.6 g / 8.0 N
100 °C -28.8% 0.62 kg / 1.37 pounds
619.4 g / 6.1 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 12x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.57 kg / 3.47 pounds
2 770 Gs
0.24 kg / 0.52 pounds
236 g / 2.3 N
N/A
1 mm 1.46 kg / 3.21 pounds
2 891 Gs
0.22 kg / 0.48 pounds
219 g / 2.1 N
1.31 kg / 2.89 pounds
~0 Gs
2 mm 1.30 kg / 2.87 pounds
2 731 Gs
0.19 kg / 0.43 pounds
195 g / 1.9 N
1.17 kg / 2.58 pounds
~0 Gs
3 mm 1.12 kg / 2.48 pounds
2 538 Gs
0.17 kg / 0.37 pounds
168 g / 1.7 N
1.01 kg / 2.23 pounds
~0 Gs
5 mm 0.78 kg / 1.71 pounds
2 109 Gs
0.12 kg / 0.26 pounds
116 g / 1.1 N
0.70 kg / 1.54 pounds
~0 Gs
10 mm 0.24 kg / 0.53 pounds
1 173 Gs
0.04 kg / 0.08 pounds
36 g / 0.4 N
0.22 kg / 0.48 pounds
~0 Gs
20 mm 0.02 kg / 0.05 pounds
361 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
0.02 kg / 0.05 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
36 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
22 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
14 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
10 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
7 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
5 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Hazards (electronics) - precautionary measures
MW 12x1.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 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) 0.5 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 12x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 26.63 km/h
(7.40 m/s)
0.03 J
30 mm 45.72 km/h
(12.70 m/s)
0.10 J
50 mm 59.02 km/h
(16.40 m/s)
0.17 J
100 mm 83.47 km/h
(23.19 m/s)
0.34 J

Table 9: Corrosion resistance
MW 12x1.5 / 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 12x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 159 Mx 21.6 µWb
Pc Coefficient 0.19 Low (Flat)

Table 11: Physics of underwater searching
MW 12x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.87 kg Standard
Water (riverbed) 1.00 kg
(+0.13 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. Vertical hold

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

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Thermal stability

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.19

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%
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: 010442-2026
Quick Unit Converter
Magnet pull force

Magnetic Induction

Other offers

The offered product is an exceptionally strong cylindrical magnet, produced from advanced NdFeB material, which, with dimensions of Ø12x1.5 mm, guarantees the highest energy density. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.87 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 8.51 N with a weight of only 1.27 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, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable 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 (Ø12x1.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 1.5 mm. The key parameter here is the holding force amounting to approximately 0.87 kg (force ~8.51 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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 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.

Pros and cons of Nd2Fe14B magnets.

Benefits

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:
  • Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (according to research),
  • They retain their magnetic properties even under close interference source,
  • In other words, due to the aesthetic finish of silver, the element becomes visually attractive,
  • Neodymium magnets generate maximum magnetic induction on a their surface, which allows for strong attraction,
  • 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 forming and the ability to modify to unusual requirements,
  • Universal use in innovative solutions – they find application in hard drives, brushless drives, precision medical tools, as well as industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. 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 rust. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited ability of producing nuts in the magnet and complex shapes - recommended is cover - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child safety. It is also worth noting that small elements of these devices can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Highest magnetic holding forcewhat contributes to it?

The load parameter shown represents the limit force, recorded under ideal test conditions, specifically:
  • using a plate made of mild steel, acting as a magnetic yoke
  • with a thickness no less than 10 mm
  • characterized by lack of roughness
  • under conditions of no distance (surface-to-surface)
  • during detachment in a direction perpendicular to the mounting surface
  • in stable room temperature

What influences lifting capacity in practice

Real force is affected by specific conditions, including (from priority):
  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost into the air.
  • Material composition – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
  • Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the holding force.

Precautions when working with NdFeB magnets
Crushing risk

Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.

Health Danger

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Phone sensors

An intense magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Risk of cracking

Neodymium magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them cracking into shards.

Avoid contact if allergic

Certain individuals have a sensitization to Ni, which is the common plating for NdFeB magnets. Frequent touching may cause a rash. We suggest use safety gloves.

Operating temperature

Keep cool. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Safe operation

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

Mechanical processing

Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Do not give to children

These products are not intended for children. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates urgent medical intervention.

Protect data

Data protection: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Warning! Learn more about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98