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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 of the product - 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 modeling of the product - technical parameters

These data are the direct effect of a physical simulation. Results rely on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs gap) - power drop
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
low risk
5 mm 1787 Gs
178.7 mT
0.55 kg / 1.21 lbs
547.8 g / 5.4 N
low risk
10 mm 622 Gs
62.2 mT
0.07 kg / 0.15 lbs
66.3 g / 0.7 N
low risk
15 mm 272 Gs
27.2 mT
0.01 kg / 0.03 lbs
12.7 g / 0.1 N
low risk
20 mm 141 Gs
14.1 mT
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
low risk
30 mm 52 Gs
5.2 mT
0.00 kg / 0.00 lbs
0.5 g / 0.0 N
low risk
50 mm 13 Gs
1.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Vertical capacity (wall)
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) - behavior on slippery surfaces
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 (substrate influence) - 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 stability (stability) - power drop
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: Two magnets (attraction) - field range
MW 12x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (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: Protective zones (implants) - warnings
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
Mobile device 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) - collision effects
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: Corrosion resistance
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: Construction 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: Underwater work (magnet fishing)
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%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

*Warning: On a vertical surface, the magnet holds just a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Thermal stability

*For N38 grade, 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 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%
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: 010016-2026
Magnet Unit Converter
Pulling force

Magnetic Field

Check out also products

The offered product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø12x10 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 4.83 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 47.41 N with a weight of only 8.48 g, this rod is indispensable in electronics and wherever every gram matters.
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 epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance 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 protects the surface 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 standard 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 rare earth magnets.

Strengths

Besides their tremendous pulling force, neodymium magnets offer the following advantages:
  • They retain full power for almost ten years – the drop is just ~1% (according to analyses),
  • Neodymium magnets are remarkably resistant to demagnetization caused by external interference,
  • By using a shiny layer of gold, the element presents an elegant look,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
  • Possibility of accurate forming and adjusting to defined conditions,
  • Versatile presence in high-tech industry – they find application in HDD drives, electromotive mechanisms, precision medical tools, also complex engineering applications.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

What to avoid - cons of neodymium magnets and ways of using them
  • At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We recommend casing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex shapes.
  • Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these devices can complicate diagnosis medical when they are in the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Holding force characteristics

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

The declared magnet strength represents the limit force, recorded under ideal test conditions, meaning:
  • with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • with a thickness no less than 10 mm
  • with a plane perfectly flat
  • without any clearance between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Real force is influenced by specific conditions, mainly (from most important):
  • Distance (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Warnings
Dust explosion hazard

Dust produced during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Keep away from computers

Do not bring magnets close to a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Do not give to children

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Store out of reach of children and animals.

Magnets are brittle

Neodymium magnets are ceramic materials, which means they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Skin irritation risks

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Power loss in heat

Control the heat. Exposing the magnet to high heat will permanently weaken its properties and strength.

Hand protection

Large magnets can smash fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Phone sensors

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can ruin the internal compass in your phone.

Health Danger

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

Handling rules

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Caution! Details about risks in the article: Magnet Safety Guide.