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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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Physical properties - 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

Technical simulation of the magnet - data

Presented data represent the direct effect of a engineering analysis. Results rely on models for the material Nd2Fe14B. Actual performance may differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs distance) - 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 LBS
870.0 g / 8.5 N
safe
1 mm 1365 Gs
136.5 mT
0.72 kg / 1.58 LBS
718.1 g / 7.0 N
safe
2 mm 1163 Gs
116.3 mT
0.52 kg / 1.15 LBS
521.4 g / 5.1 N
safe
3 mm 947 Gs
94.7 mT
0.35 kg / 0.76 LBS
345.7 g / 3.4 N
safe
5 mm 587 Gs
58.7 mT
0.13 kg / 0.29 LBS
132.6 g / 1.3 N
safe
10 mm 180 Gs
18.0 mT
0.01 kg / 0.03 LBS
12.5 g / 0.1 N
safe
15 mm 70 Gs
7.0 mT
0.00 kg / 0.00 LBS
1.9 g / 0.0 N
safe
20 mm 33 Gs
3.3 mT
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
safe
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Sliding force (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 LBS
174.0 g / 1.7 N
1 mm Stal (~0.2) 0.14 kg / 0.32 LBS
144.0 g / 1.4 N
2 mm Stal (~0.2) 0.10 kg / 0.23 LBS
104.0 g / 1.0 N
3 mm Stal (~0.2) 0.07 kg / 0.15 LBS
70.0 g / 0.7 N
5 mm Stal (~0.2) 0.03 kg / 0.06 LBS
26.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
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 LBS
261.0 g / 2.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.17 kg / 0.38 LBS
174.0 g / 1.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.09 kg / 0.19 LBS
87.0 g / 0.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.44 kg / 0.96 LBS
435.0 g / 4.3 N

Table 4: Material efficiency (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 LBS
87.0 g / 0.9 N
1 mm
25%
0.22 kg / 0.48 LBS
217.5 g / 2.1 N
2 mm
50%
0.44 kg / 0.96 LBS
435.0 g / 4.3 N
3 mm
75%
0.65 kg / 1.44 LBS
652.5 g / 6.4 N
5 mm
100%
0.87 kg / 1.92 LBS
870.0 g / 8.5 N
10 mm
100%
0.87 kg / 1.92 LBS
870.0 g / 8.5 N
11 mm
100%
0.87 kg / 1.92 LBS
870.0 g / 8.5 N
12 mm
100%
0.87 kg / 1.92 LBS
870.0 g / 8.5 N

Table 5: Thermal resistance (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 LBS
870.0 g / 8.5 N
OK
40 °C -2.2% 0.85 kg / 1.88 LBS
850.9 g / 8.3 N
OK
60 °C -4.4% 0.83 kg / 1.83 LBS
831.7 g / 8.2 N
80 °C -6.6% 0.81 kg / 1.79 LBS
812.6 g / 8.0 N
100 °C -28.8% 0.62 kg / 1.37 LBS
619.4 g / 6.1 N

Table 6: Magnet-Magnet interaction (attraction) - field collision
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 LBS
2 770 Gs
0.24 kg / 0.52 LBS
236 g / 2.3 N
N/A
1 mm 1.46 kg / 3.21 LBS
2 891 Gs
0.22 kg / 0.48 LBS
219 g / 2.1 N
1.31 kg / 2.89 LBS
~0 Gs
2 mm 1.30 kg / 2.87 LBS
2 731 Gs
0.19 kg / 0.43 LBS
195 g / 1.9 N
1.17 kg / 2.58 LBS
~0 Gs
3 mm 1.12 kg / 2.48 LBS
2 538 Gs
0.17 kg / 0.37 LBS
168 g / 1.7 N
1.01 kg / 2.23 LBS
~0 Gs
5 mm 0.78 kg / 1.71 LBS
2 109 Gs
0.12 kg / 0.26 LBS
116 g / 1.1 N
0.70 kg / 1.54 LBS
~0 Gs
10 mm 0.24 kg / 0.53 LBS
1 173 Gs
0.04 kg / 0.08 LBS
36 g / 0.4 N
0.22 kg / 0.48 LBS
~0 Gs
20 mm 0.02 kg / 0.05 LBS
361 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.05 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
36 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
22 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
14 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
10 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
7 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
5 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Hazards (electronics) - warnings
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
Timepiece 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: Collisions (kinetic energy) - warning
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: Coating parameters (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 (Pc)
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: Underwater work (magnet fishing)
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. Sliding resistance

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

2. Plate thickness effect

*Thin steel (e.g. computer case) severely reduces the holding force.

3. Power loss vs temp

*For standard magnets, the max working temp 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 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: 010442-2026
Quick Unit Converter
Force (pull)

Magnetic Induction

Other proposals

The presented product is an exceptionally strong cylinder magnet, produced from durable NdFeB material, which, at dimensions of Ø12x1.5 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 0.87 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration 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 miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component epoxy glues. 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.
Magnets N38 are strong enough 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 (Ø12x1.5), 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 Ø12x1.5 mm, which, at a weight of 1.27 g, makes it an element with impressive magnetic energy density. The value of 8.51 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.27 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 1.5 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Pros and cons of rare earth magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They do not lose power, even over nearly 10 years – the decrease in power is only ~1% (according to tests),
  • They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • By applying a decorative coating of gold, the element has an nice look,
  • Neodymium magnets generate maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Due to the ability of free shaping and adaptation to individualized projects, magnetic components can be modeled in a wide range of shapes and sizes, which amplifies use scope,
  • Significant place in advanced technology sectors – they find application in data components, drive modules, medical devices, as well as multitasking production systems.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Characteristics of disadvantages of neodymium magnets: tips and applications.
  • At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 very resistant to heat
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating nuts and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
  • Health risk to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small components of these magnets are able to complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat affects it?

The specified lifting capacity represents the limit force, recorded under optimal environment, specifically:
  • using a sheet made of high-permeability steel, acting as a circuit closing element
  • whose thickness is min. 10 mm
  • characterized by even structure
  • under conditions of gap-free contact (surface-to-surface)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Holding efficiency is affected by working environment parameters, including (from most important):
  • Clearance – existence of any layer (rust, dirt, air) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. High carbon content worsen the interaction with the magnet.
  • Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Warnings
Metal Allergy

A percentage of the population experience a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to dermatitis. It is best to use protective gloves.

Do not overheat magnets

Control the heat. Heating the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Physical harm

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Shattering risk

Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Adults only

Neodymium magnets are not toys. Eating multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.

Powerful field

Use magnets with awareness. Their huge power can surprise even experienced users. Stay alert and respect their force.

Cards and drives

Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Magnetic interference

GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Medical implants

Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Machining danger

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

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