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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

bulk discounts:

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Force and structure of a neodymium magnet can be reviewed on our modular calculator.

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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

Technical simulation of the magnet - data

The following data represent the result of a mathematical calculation. Results were calculated on algorithms for the material Nd2Fe14B. Actual conditions might slightly differ. Use these data as a preliminary roadmap during assembly planning.

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 lbs
870.0 g / 8.5 N
low risk
1 mm 1365 Gs
136.5 mT
0.72 kg / 1.58 lbs
718.1 g / 7.0 N
low risk
2 mm 1163 Gs
116.3 mT
0.52 kg / 1.15 lbs
521.4 g / 5.1 N
low risk
3 mm 947 Gs
94.7 mT
0.35 kg / 0.76 lbs
345.7 g / 3.4 N
low risk
5 mm 587 Gs
58.7 mT
0.13 kg / 0.29 lbs
132.6 g / 1.3 N
low risk
10 mm 180 Gs
18.0 mT
0.01 kg / 0.03 lbs
12.5 g / 0.1 N
low risk
15 mm 70 Gs
7.0 mT
0.00 kg / 0.00 lbs
1.9 g / 0.0 N
low risk
20 mm 33 Gs
3.3 mT
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
low risk
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Shear 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: Wall mounting (sliding) - 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 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: Working in heat (material behavior) - power drop
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: Two magnets (attraction) - field range
MW 12x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (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: Protective zones (implants) - 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: Dynamics (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: 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 (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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Wall mount (shear)

*Warning: On a vertical wall, the magnet retains only ~20% of its nominal pull.

2. Efficiency vs thickness

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

3. Thermal stability

*For standard magnets, 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%
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
Force (pull)

Field Strength

Other offers

This product is an exceptionally strong rod magnet, manufactured from durable NdFeB material, which, with dimensions of Ø12x1.5 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.87 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 8.51 N with a weight of only 1.27 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability 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 frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and operational stability. 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 available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 1.5 mm. 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 external factors, 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. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose magnetism, even over approximately ten years – the decrease in lifting capacity is only ~1% (theoretically),
  • Neodymium magnets are distinguished by remarkably resistant to demagnetization caused by magnetic disturbances,
  • In other words, due to the glossy finish of silver, the element is aesthetically pleasing,
  • They feature high magnetic induction at the operating surface, which improves attraction properties,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to versatility in constructing and the capacity to customize to client solutions,
  • Key role in high-tech industry – they are commonly used in hard drives, electric motors, medical devices, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in compact constructions

Limitations

Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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 propose using casing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

The load parameter shown concerns the maximum value, measured under laboratory conditions, meaning:
  • with the use of a sheet made of special test steel, ensuring full magnetic saturation
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • with zero gap (no coatings)
  • under vertical application of breakaway force (90-degree angle)
  • at standard ambient temperature

Magnet lifting force in use – key factors

It is worth knowing that the working load will differ subject to elements below, in order of importance:
  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Steel type – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and lifting capacity.
  • Surface structure – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Precautions when working with NdFeB magnets
Handling rules

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

Material brittleness

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

Fire risk

Powder created during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Compass and GPS

Note: rare earth magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, device, and GPS.

Hand protection

Watch your fingers. Two large magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, immediately stop working with magnets and use protective gear.

Do not overheat magnets

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Do not give to children

Strictly store magnets away from children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are fatal.

Data carriers

Do not bring magnets near a wallet, computer, or screen. The magnetic field can destroy these devices and erase data from cards.

Danger! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98