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MW 12x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010016

GTIN/EAN: 5906301810155

5.00
Load capacity 4.83 kg / 47.41 N Magnetic Induction 531.09 mT / 5311 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
8.48 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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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
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 - technical parameters

Presented values constitute the result of a mathematical analysis. Values rely on algorithms for the class Nd2Fe14B. Actual parameters might slightly differ. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - 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
warning
1 mm 4424 Gs
442.4 mT
3.36 kg / 7.40 LBS
3355.3 g / 32.9 N
warning
2 mm 3585 Gs
358.5 mT
2.20 kg / 4.86 LBS
2203.4 g / 21.6 N
warning
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: Slippage hold (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: Wall mounting (sliding) - 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 stability (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) - forces in the system
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: Safety (HSE) (electronics) - 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: Impact energy (kinetic energy) - warning
MW 12x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.58 km/h
(5.16 m/s)
0.11 J
30 mm 18.75 km/h
(5.21 m/s)
0.11 J
50 mm 18.75 km/h
(5.21 m/s)
0.12 J
100 mm 18.75 km/h
(5.21 m/s)
0.12 J

Table 9: Anti-corrosion coating 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: Physics of underwater searching
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Wall mount (shear)

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

2. Plate thickness effect

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

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

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
Measurement Calculator

Magnet pull force


Magnetic Field

Check out also deals

The offered product is an extremely powerful cylindrical magnet, produced from durable NdFeB material, which, with dimensions of Ø12x10 mm, guarantees optimal power. The MW 12x10 / N38 model boasts an accuracy of ±0.1mm and industrial build quality, making it an ideal 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 lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 47.41 N with a weight of only 8.48 g, this rod is indispensable in miniature devices 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 chipping the coating of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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 in continuous sale in our store.
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 key parameter here is the holding force amounting to approximately 4.83 kg (force ~47.41 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, 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 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 neodymium magnets.

Strengths

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • They show high resistance to demagnetization induced by presence of other magnetic fields,
  • Thanks to the shiny finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an professional appearance,
  • Magnetic induction on the working layer of the magnet is very high,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • In view of the possibility of flexible molding and adaptation to specialized needs, NdFeB magnets can be manufactured in a variety of forms and dimensions, which amplifies use scope,
  • Key role in modern technologies – they are used in hard drives, drive modules, medical devices, as well as technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in miniature devices

Cons

Characteristics of disadvantages of neodymium magnets: application proposals
  • They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
  • 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.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Due to limitations in realizing nuts and complex forms in magnets, we recommend using cover - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Best holding force of the magnet in ideal parameterswhat it depends on?

The lifting capacity listed is a theoretical maximum value performed under standard conditions:
  • on a base made of mild steel, perfectly concentrating the magnetic field
  • possessing a thickness of min. 10 mm to avoid saturation
  • with a plane perfectly flat
  • under conditions of ideal adhesion (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • at standard ambient temperature

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on a number of factors, presented from crucial:
  • Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Base massiveness – insufficiently thick plate does not accept the full field, causing part of the flux to be escaped to the other side.
  • Plate material – low-carbon steel attracts best. Alloy steels reduce magnetic properties and holding force.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.

Safe handling of NdFeB magnets
Avoid contact if allergic

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation appears, immediately stop handling magnets and use protective gear.

Mechanical processing

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Bone fractures

Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Heat warning

Do not overheat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Medical implants

Patients with a ICD have to maintain an safe separation from magnets. The magnetic field can disrupt the operation of the life-saving device.

Safe distance

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Powerful field

Use magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their power.

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets leads to them breaking into small pieces.

This is not a toy

Always keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are life-threatening.

GPS and phone interference

Remember: rare earth magnets produce a field that confuses precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Attention! Learn more about hazards in the article: Safety of working with magnets.