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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 - 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 assembly - data

These data are the direct effect of a engineering simulation. Results are based on models for the class Nd2Fe14B. Operational conditions may deviate from the simulation results. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - characteristics
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: Sliding capacity (vertical surface)
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) - behavior on slippery surfaces
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: Steel thickness (substrate influence) - 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: Working in heat (material behavior) - resistance threshold
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: Two magnets (repulsion) - field range
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: Protective zones (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
Phone / Smartphone 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: Anti-corrosion coating durability
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: Construction 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: Submerged application
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%
Warning: 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)

*Warning: On a vertical surface, the magnet holds only ~20% of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

*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) = 0.19

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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%
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: 010442-2026
Quick Unit Converter
Pulling force

Magnetic Induction

Other offers

This product is a very strong rod magnet, produced from durable NdFeB material, which, with dimensions of Ø12x1.5 mm, guarantees maximum efficiency. This specific item features high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 0.87 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, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 8.51 N with a weight of only 1.27 g, this rod is indispensable in miniature devices and wherever every gram matters.
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 professional component. To ensure long-term durability in industry, 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 popular standard for professional neodymium magnets, offering a great economic balance and operational stability. 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 store.
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 compact dimensions, proves the high power 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.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Besides their immense strength, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
  • Magnets very well defend themselves against demagnetization caused by foreign field sources,
  • By using a smooth layer of nickel, the element gains an elegant look,
  • Neodymium magnets generate maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in shaping and the capacity to customize to individual projects,
  • Universal use in high-tech industry – they are commonly used in computer drives, motor assemblies, medical equipment, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose 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 stability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

The declared magnet strength concerns the maximum value, obtained under laboratory conditions, specifically:
  • with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an polished contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • under axial force vector (90-degree angle)
  • in temp. approx. 20°C

Practical lifting capacity: influencing factors

In real-world applications, the actual holding force depends on many variables, listed from most significant:
  • Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Steel type – low-carbon steel gives the best results. Higher carbon content decrease magnetic permeability and holding force.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Warnings
Warning for heart patients

For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Data carriers

Avoid bringing magnets near a purse, laptop, or screen. The magnetism can destroy these devices and erase data from cards.

Immense force

Handle magnets consciously. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their force.

GPS and phone interference

Remember: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a safe distance from your phone, tablet, and GPS.

Bodily injuries

Danger of trauma: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.

Allergy Warning

It is widely known that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid direct skin contact or select coated magnets.

Permanent damage

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Fire risk

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Shattering risk

Despite metallic appearance, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Product not for children

Neodymium magnets are not toys. Swallowing several magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Security! More info about hazards in the article: Safety of working with magnets.