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MW 12x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010016

GTIN/EAN: 5906301810155

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

8.48 g

Magnetization Direction

↑ axial

Load capacity

4.83 kg / 47.41 N

Magnetic Induction

531.09 mT / 5311 Gs

Coating

[NiCuNi] Nickel

3.03 with VAT / pcs + price for transport

2.46 ZŁ net + 23% VAT / pcs

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Technical details - MW 12x10 / N38 - cylindrical magnet

Specification / characteristics - MW 12x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010016
GTIN/EAN 5906301810155
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 10 mm [±0,1 mm]
Weight 8.48 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.83 kg / 47.41 N
Magnetic Induction ~ ? 531.09 mT / 5311 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x10 / 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

Engineering analysis of the product - data

These information constitute the result of a engineering analysis. Results were calculated on algorithms for the class Nd2Fe14B. Operational conditions may differ. Use these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs distance) - characteristics
MW 12x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5308 Gs
530.8 mT
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
strong
1 mm 4424 Gs
442.4 mT
3.36 kg / 7.40 lbs
3355.3 g / 32.9 N
strong
2 mm 3585 Gs
358.5 mT
2.20 kg / 4.86 lbs
2203.4 g / 21.6 N
strong
3 mm 2857 Gs
285.7 mT
1.40 kg / 3.08 lbs
1399.2 g / 13.7 N
weak grip
5 mm 1787 Gs
178.7 mT
0.55 kg / 1.21 lbs
547.8 g / 5.4 N
weak grip
10 mm 622 Gs
62.2 mT
0.07 kg / 0.15 lbs
66.3 g / 0.7 N
weak grip
15 mm 272 Gs
27.2 mT
0.01 kg / 0.03 lbs
12.7 g / 0.1 N
weak grip
20 mm 141 Gs
14.1 mT
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
weak grip
30 mm 52 Gs
5.2 mT
0.00 kg / 0.00 lbs
0.5 g / 0.0 N
weak grip
50 mm 13 Gs
1.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip

Table 2: Shear load (vertical surface)
MW 12x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.97 kg / 2.13 lbs
966.0 g / 9.5 N
1 mm Stal (~0.2) 0.67 kg / 1.48 lbs
672.0 g / 6.6 N
2 mm Stal (~0.2) 0.44 kg / 0.97 lbs
440.0 g / 4.3 N
3 mm Stal (~0.2) 0.28 kg / 0.62 lbs
280.0 g / 2.7 N
5 mm Stal (~0.2) 0.11 kg / 0.24 lbs
110.0 g / 1.1 N
10 mm Stal (~0.2) 0.01 kg / 0.03 lbs
14.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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 12x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.45 kg / 3.19 lbs
1449.0 g / 14.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.97 kg / 2.13 lbs
966.0 g / 9.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.48 kg / 1.06 lbs
483.0 g / 4.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.42 kg / 5.32 lbs
2415.0 g / 23.7 N

Table 4: Material efficiency (saturation) - power losses
MW 12x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.48 kg / 1.06 lbs
483.0 g / 4.7 N
1 mm
25%
1.21 kg / 2.66 lbs
1207.5 g / 11.8 N
2 mm
50%
2.42 kg / 5.32 lbs
2415.0 g / 23.7 N
3 mm
75%
3.62 kg / 7.99 lbs
3622.5 g / 35.5 N
5 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
10 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
11 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
12 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 12x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
OK
40 °C -2.2% 4.72 kg / 10.41 lbs
4723.7 g / 46.3 N
OK
60 °C -4.4% 4.62 kg / 10.18 lbs
4617.5 g / 45.3 N
OK
80 °C -6.6% 4.51 kg / 9.95 lbs
4511.2 g / 44.3 N
100 °C -28.8% 3.44 kg / 7.58 lbs
3439.0 g / 33.7 N

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 19.64 kg / 43.30 lbs
5 928 Gs
2.95 kg / 6.50 lbs
2946 g / 28.9 N
N/A
1 mm 16.52 kg / 36.43 lbs
9 736 Gs
2.48 kg / 5.46 lbs
2479 g / 24.3 N
14.87 kg / 32.79 lbs
~0 Gs
2 mm 13.64 kg / 30.08 lbs
8 847 Gs
2.05 kg / 4.51 lbs
2047 g / 20.1 N
12.28 kg / 27.07 lbs
~0 Gs
3 mm 11.12 kg / 24.51 lbs
7 986 Gs
1.67 kg / 3.68 lbs
1668 g / 16.4 N
10.01 kg / 22.06 lbs
~0 Gs
5 mm 7.16 kg / 15.79 lbs
6 410 Gs
1.07 kg / 2.37 lbs
1074 g / 10.5 N
6.45 kg / 14.21 lbs
~0 Gs
10 mm 2.23 kg / 4.91 lbs
3 575 Gs
0.33 kg / 0.74 lbs
334 g / 3.3 N
2.00 kg / 4.42 lbs
~0 Gs
20 mm 0.27 kg / 0.59 lbs
1 244 Gs
0.04 kg / 0.09 lbs
40 g / 0.4 N
0.24 kg / 0.54 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
164 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
104 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
70 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
49 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
36 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
27 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Hazards (implants) - precautionary measures
MW 12x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.5 cm
Hearing aid 10 Gs (1.0 mT) 6.0 cm
Mechanical watch 20 Gs (2.0 mT) 4.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.5 cm
Car key 50 Gs (5.0 mT) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Dynamics (cracking risk) - warning
MW 12x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.27 km/h
(6.74 m/s)
0.19 J
30 mm 41.69 km/h
(11.58 m/s)
0.57 J
50 mm 53.82 km/h
(14.95 m/s)
0.95 J
100 mm 76.11 km/h
(21.14 m/s)
1.90 J

Table 9: Coating parameters (durability)
MW 12x10 / 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 12x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 6 105 Mx 61.1 µWb
Pc Coefficient 0.81 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 12x10 / N38

Environment Effective steel pull Effect
Air (land) 4.83 kg Standard
Water (riverbed) 5.53 kg
(+0.70 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

*Note: On a vertical surface, the magnet holds only approx. 20-30% of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) drastically weakens 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) = 0.81

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
Material specification
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: 010016-2026
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Magnet pull force

Magnetic Field

Other offers

This product is an incredibly powerful rod magnet, produced from modern NdFeB material, which, at dimensions of Ø12x10 mm, guarantees optimal power. The MW 12x10 / N38 model features high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 4.83 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 47.41 N with a weight of only 8.48 g, this rod is indispensable in electronics 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 immediate cracking of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø12x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø12x10 mm, which, at a weight of 8.48 g, makes it an element with high magnetic energy density. The value of 47.41 N means that the magnet is capable of holding a weight many times exceeding its own mass of 8.48 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 10 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.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain attractive force for around ten years – the drop is just ~1% (according to analyses),
  • Magnets very well resist against demagnetization caused by foreign field sources,
  • By covering with a lustrous coating of nickel, the element gains an elegant look,
  • They show high magnetic induction at the operating surface, which increases their power,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to the option of flexible molding and adaptation to individualized solutions, magnetic components can be manufactured in a wide range of shapes and sizes, which amplifies use scope,
  • Key role in innovative solutions – they serve a role in mass storage devices, brushless drives, medical devices, and other advanced devices.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Disadvantages

Drawbacks and weaknesses of neodymium magnets: application proposals
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also increases their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We suggest casing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complicated shapes.
  • Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small elements of these devices are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum magnetic pulling forcewhat it depends on?

The force parameter is a theoretical maximum value performed under standard conditions:
  • on a block made of structural steel, optimally conducting the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • with an polished contact surface
  • under conditions of no distance (surface-to-surface)
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Holding efficiency impacted by working environment parameters, mainly (from priority):
  • Clearance – existence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, however under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Warnings
Heat sensitivity

Watch the temperature. Heating the magnet to high heat will ruin its magnetic structure and strength.

Sensitization to coating

A percentage of the population experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact may cause skin redness. We suggest use safety gloves.

Safe distance

Very strong magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Keep away from electronics

Remember: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Health Danger

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Safe operation

Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Serious injuries

Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Risk of cracking

Watch out for shards. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

This is not a toy

Product intended for adults. Tiny parts pose a choking risk, causing severe trauma. Store out of reach of kids and pets.

Dust explosion hazard

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Attention! Details about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98