Product available Ships today (order by 14:00)

MW 12x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010021

GTIN/EAN: 5906301810209

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

5.09 g

Magnetization Direction

↑ axial

Load capacity

4.60 kg / 45.09 N

Magnetic Induction

437.99 mT / 4380 Gs

Coating

[NiCuNi] Nickel

1.882 with VAT / pcs + price for transport

1.530 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
1.530 ZŁ
1.882 ZŁ
price from 432 pcs
1.377 ZŁ
1.694 ZŁ
price from 864 pcs
1.346 ZŁ
1.656 ZŁ
Need advice?

Contact us by phone +48 888 99 98 98 if you prefer get in touch using our online form through our site.
Weight as well as structure of magnets can be calculated on our online calculation tool.

Same-day shipping for orders placed before 14:00.

Technical details - MW 12x6 / N38 - cylindrical magnet

Specification / characteristics - MW 12x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010021
GTIN/EAN 5906301810209
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 6 mm [±0,1 mm]
Weight 5.09 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.60 kg / 45.09 N
Magnetic Induction ~ ? 437.99 mT / 4380 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x6 / 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 assembly - report

The following data constitute the result of a physical analysis. Results were calculated on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Treat these data as a supplementary guide when designing systems.

Table 1: Static force (force vs distance) - power drop
MW 12x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4377 Gs
437.7 mT
4.60 kg / 10.14 pounds
4600.0 g / 45.1 N
warning
1 mm 3688 Gs
368.8 mT
3.27 kg / 7.20 pounds
3265.4 g / 32.0 N
warning
2 mm 2999 Gs
299.9 mT
2.16 kg / 4.76 pounds
2159.7 g / 21.2 N
warning
3 mm 2386 Gs
238.6 mT
1.37 kg / 3.01 pounds
1366.7 g / 13.4 N
low risk
5 mm 1474 Gs
147.4 mT
0.52 kg / 1.15 pounds
521.4 g / 5.1 N
low risk
10 mm 489 Gs
48.9 mT
0.06 kg / 0.13 pounds
57.4 g / 0.6 N
low risk
15 mm 205 Gs
20.5 mT
0.01 kg / 0.02 pounds
10.1 g / 0.1 N
low risk
20 mm 103 Gs
10.3 mT
0.00 kg / 0.01 pounds
2.5 g / 0.0 N
low risk
30 mm 36 Gs
3.6 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
low risk
50 mm 9 Gs
0.9 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk

Table 2: Sliding force (vertical surface)
MW 12x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.92 kg / 2.03 pounds
920.0 g / 9.0 N
1 mm Stal (~0.2) 0.65 kg / 1.44 pounds
654.0 g / 6.4 N
2 mm Stal (~0.2) 0.43 kg / 0.95 pounds
432.0 g / 4.2 N
3 mm Stal (~0.2) 0.27 kg / 0.60 pounds
274.0 g / 2.7 N
5 mm Stal (~0.2) 0.10 kg / 0.23 pounds
104.0 g / 1.0 N
10 mm Stal (~0.2) 0.01 kg / 0.03 pounds
12.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 12x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.92 kg / 2.03 pounds
920.0 g / 9.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.46 kg / 1.01 pounds
460.0 g / 4.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.30 kg / 5.07 pounds
2300.0 g / 22.6 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 12x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.46 kg / 1.01 pounds
460.0 g / 4.5 N
1 mm
25%
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
2 mm
50%
2.30 kg / 5.07 pounds
2300.0 g / 22.6 N
3 mm
75%
3.45 kg / 7.61 pounds
3450.0 g / 33.8 N
5 mm
100%
4.60 kg / 10.14 pounds
4600.0 g / 45.1 N
10 mm
100%
4.60 kg / 10.14 pounds
4600.0 g / 45.1 N
11 mm
100%
4.60 kg / 10.14 pounds
4600.0 g / 45.1 N
12 mm
100%
4.60 kg / 10.14 pounds
4600.0 g / 45.1 N

Table 5: Thermal stability (material behavior) - thermal limit
MW 12x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.60 kg / 10.14 pounds
4600.0 g / 45.1 N
OK
40 °C -2.2% 4.50 kg / 9.92 pounds
4498.8 g / 44.1 N
OK
60 °C -4.4% 4.40 kg / 9.70 pounds
4397.6 g / 43.1 N
80 °C -6.6% 4.30 kg / 9.47 pounds
4296.4 g / 42.1 N
100 °C -28.8% 3.28 kg / 7.22 pounds
3275.2 g / 32.1 N

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 12x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 13.36 kg / 29.45 pounds
5 536 Gs
2.00 kg / 4.42 pounds
2004 g / 19.7 N
N/A
1 mm 11.39 kg / 25.10 pounds
8 082 Gs
1.71 kg / 3.77 pounds
1708 g / 16.8 N
10.25 kg / 22.59 pounds
~0 Gs
2 mm 9.48 kg / 20.91 pounds
7 376 Gs
1.42 kg / 3.14 pounds
1423 g / 14.0 N
8.54 kg / 18.82 pounds
~0 Gs
3 mm 7.77 kg / 17.12 pounds
6 675 Gs
1.17 kg / 2.57 pounds
1165 g / 11.4 N
6.99 kg / 15.41 pounds
~0 Gs
5 mm 5.01 kg / 11.05 pounds
5 361 Gs
0.75 kg / 1.66 pounds
752 g / 7.4 N
4.51 kg / 9.94 pounds
~0 Gs
10 mm 1.51 kg / 3.34 pounds
2 948 Gs
0.23 kg / 0.50 pounds
227 g / 2.2 N
1.36 kg / 3.01 pounds
~0 Gs
20 mm 0.17 kg / 0.37 pounds
978 Gs
0.02 kg / 0.06 pounds
25 g / 0.2 N
0.15 kg / 0.33 pounds
~0 Gs
50 mm 0.00 kg / 0.01 pounds
116 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
72 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
48 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
33 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
24 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
18 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - warnings
MW 12x6 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (cracking risk) - collision effects
MW 12x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 30.55 km/h
(8.49 m/s)
0.18 J
30 mm 52.51 km/h
(14.59 m/s)
0.54 J
50 mm 67.79 km/h
(18.83 m/s)
0.90 J
100 mm 95.87 km/h
(26.63 m/s)
1.81 J

Table 9: Corrosion resistance
MW 12x6 / 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 12x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 024 Mx 50.2 µWb
Pc Coefficient 0.59 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 12x6 / N38

Environment Effective steel pull Effect
Air (land) 4.60 kg Standard
Water (riverbed) 5.27 kg
(+0.67 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Sliding resistance

*Warning: On a vertical surface, the magnet holds merely a fraction of its max power.

2. Steel saturation

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

3. Thermal stability

*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) = 0.59

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%
Ecology and recycling (GPSR)
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: 010021-2026
Measurement Calculator
Magnet pull force

Magnetic Field

Other proposals

This product is a very strong cylindrical magnet, manufactured from durable NdFeB material, which, at dimensions of Ø12x6 mm, guarantees optimal power. This specific item boasts high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 4.60 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 45.09 N with a weight of only 5.09 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen 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 (Ø12x6), 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 Ø12x6 mm, which, at a weight of 5.09 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 4.60 kg (force ~45.09 N), which, with such compact dimensions, proves the high grade of the NdFeB material. 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 6 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 neodymium magnets.

Advantages

Besides their stability, neodymium magnets are valued for these benefits:
  • They do not lose strength, even over nearly 10 years – the decrease in strength is only ~1% (based on measurements),
  • They possess excellent resistance to magnetic field loss when exposed to external fields,
  • In other words, due to the reflective layer of silver, the element is aesthetically pleasing,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to freedom in constructing and the capacity to customize to specific needs,
  • Significant place in advanced technology sectors – they serve a role in hard drives, motor assemblies, medical devices, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which allows their use in miniature devices

Limitations

Cons of neodymium magnets and ways of using them
  • They are prone to damage 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
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of creating nuts in the magnet and complex forms - recommended is cover - magnet mounting.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Detachment force of the magnet in optimal conditionswhat affects it?

The load parameter shown concerns the maximum value, measured under ideal test conditions, meaning:
  • using a plate made of high-permeability steel, serving as a magnetic yoke
  • whose thickness reaches at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • at room temperature

Determinants of practical lifting force of a magnet

Effective lifting capacity is affected by working environment parameters, mainly (from most important):
  • Distance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
  • Base massiveness – too thin plate does not close the flux, causing part of the flux to be escaped to the other side.
  • Steel grade – ideal substrate is high-permeability steel. Hardened steels may attract less.
  • Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate reduces the holding force.

Warnings
Avoid contact if allergic

Certain individuals experience a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Extended handling can result in dermatitis. We strongly advise wear protective gloves.

Dust is flammable

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Medical implants

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Compass and GPS

An intense magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Maintain magnets close to a smartphone to prevent breaking the sensors.

Conscious usage

Be careful. Neodymium magnets act from a long distance and snap with massive power, often faster than you can react.

Keep away from computers

Intense magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.

Crushing risk

Large magnets can break fingers instantly. Never place your hand betwixt two strong magnets.

This is not a toy

Always store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are very dangerous.

Permanent damage

Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Risk of cracking

Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Attention! More info about hazards in the article: Magnet Safety Guide.