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MW 12x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010017

GTIN/EAN: 5906301810162

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

1.7 g

Magnetization Direction

↑ axial

Load capacity

1.39 kg / 13.66 N

Magnetic Induction

195.97 mT / 1960 Gs

Coating

[NiCuNi] Nickel

1.132 with VAT / pcs + price for transport

0.920 ZŁ net + 23% VAT / pcs

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Technical of the product - MW 12x2 / N38 - cylindrical magnet

Specification / characteristics - MW 12x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010017
GTIN/EAN 5906301810162
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 2 mm [±0,1 mm]
Weight 1.7 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.39 kg / 13.66 N
Magnetic Induction ~ ? 195.97 mT / 1960 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x2 / 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

Physical simulation of the product - technical parameters

These information constitute the result of a physical simulation. Results are based on models for the material Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - interaction chart
MW 12x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1959 Gs
195.9 mT
1.39 kg / 3.06 lbs
1390.0 g / 13.6 N
safe
1 mm 1753 Gs
175.3 mT
1.11 kg / 2.45 lbs
1113.5 g / 10.9 N
safe
2 mm 1479 Gs
147.9 mT
0.79 kg / 1.75 lbs
791.7 g / 7.8 N
safe
3 mm 1196 Gs
119.6 mT
0.52 kg / 1.14 lbs
518.4 g / 5.1 N
safe
5 mm 738 Gs
73.8 mT
0.20 kg / 0.44 lbs
197.4 g / 1.9 N
safe
10 mm 229 Gs
22.9 mT
0.02 kg / 0.04 lbs
19.0 g / 0.2 N
safe
15 mm 90 Gs
9.0 mT
0.00 kg / 0.01 lbs
2.9 g / 0.0 N
safe
20 mm 43 Gs
4.3 mT
0.00 kg / 0.00 lbs
0.7 g / 0.0 N
safe
30 mm 14 Gs
1.4 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
safe

Table 2: Shear force (vertical surface)
MW 12x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.28 kg / 0.61 lbs
278.0 g / 2.7 N
1 mm Stal (~0.2) 0.22 kg / 0.49 lbs
222.0 g / 2.2 N
2 mm Stal (~0.2) 0.16 kg / 0.35 lbs
158.0 g / 1.5 N
3 mm Stal (~0.2) 0.10 kg / 0.23 lbs
104.0 g / 1.0 N
5 mm Stal (~0.2) 0.04 kg / 0.09 lbs
40.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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: Vertical assembly (shearing) - behavior on slippery surfaces
MW 12x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.42 kg / 0.92 lbs
417.0 g / 4.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.28 kg / 0.61 lbs
278.0 g / 2.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.14 kg / 0.31 lbs
139.0 g / 1.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.70 kg / 1.53 lbs
695.0 g / 6.8 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 12x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.14 kg / 0.31 lbs
139.0 g / 1.4 N
1 mm
25%
0.35 kg / 0.77 lbs
347.5 g / 3.4 N
2 mm
50%
0.70 kg / 1.53 lbs
695.0 g / 6.8 N
3 mm
75%
1.04 kg / 2.30 lbs
1042.5 g / 10.2 N
5 mm
100%
1.39 kg / 3.06 lbs
1390.0 g / 13.6 N
10 mm
100%
1.39 kg / 3.06 lbs
1390.0 g / 13.6 N
11 mm
100%
1.39 kg / 3.06 lbs
1390.0 g / 13.6 N
12 mm
100%
1.39 kg / 3.06 lbs
1390.0 g / 13.6 N

Table 5: Thermal resistance (stability) - thermal limit
MW 12x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.39 kg / 3.06 lbs
1390.0 g / 13.6 N
OK
40 °C -2.2% 1.36 kg / 3.00 lbs
1359.4 g / 13.3 N
OK
60 °C -4.4% 1.33 kg / 2.93 lbs
1328.8 g / 13.0 N
80 °C -6.6% 1.30 kg / 2.86 lbs
1298.3 g / 12.7 N
100 °C -28.8% 0.99 kg / 2.18 lbs
989.7 g / 9.7 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 12x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.68 kg / 5.90 lbs
3 435 Gs
0.40 kg / 0.88 lbs
401 g / 3.9 N
N/A
1 mm 2.44 kg / 5.37 lbs
3 739 Gs
0.37 kg / 0.81 lbs
366 g / 3.6 N
2.19 kg / 4.84 lbs
~0 Gs
2 mm 2.14 kg / 4.73 lbs
3 507 Gs
0.32 kg / 0.71 lbs
322 g / 3.2 N
1.93 kg / 4.25 lbs
~0 Gs
3 mm 1.83 kg / 4.04 lbs
3 241 Gs
0.27 kg / 0.61 lbs
275 g / 2.7 N
1.65 kg / 3.63 lbs
~0 Gs
5 mm 1.24 kg / 2.74 lbs
2 671 Gs
0.19 kg / 0.41 lbs
187 g / 1.8 N
1.12 kg / 2.47 lbs
~0 Gs
10 mm 0.38 kg / 0.84 lbs
1 476 Gs
0.06 kg / 0.13 lbs
57 g / 0.6 N
0.34 kg / 0.75 lbs
~0 Gs
20 mm 0.04 kg / 0.08 lbs
458 Gs
0.01 kg / 0.01 lbs
5 g / 0.1 N
0.03 kg / 0.07 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
47 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
28 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
18 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
13 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
9 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
7 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Hazards (electronics) - warnings
MW 12x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 3.0 cm
Mobile device 40 Gs (4.0 mT) 2.5 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) 1.0 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 12x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 29.08 km/h
(8.08 m/s)
0.06 J
30 mm 49.95 km/h
(13.88 m/s)
0.16 J
50 mm 64.48 km/h
(17.91 m/s)
0.27 J
100 mm 91.19 km/h
(25.33 m/s)
0.55 J

Table 9: Anti-corrosion coating durability
MW 12x2 / 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 12x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 665 Mx 26.7 µWb
Pc Coefficient 0.25 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 12x2 / N38

Environment Effective steel pull Effect
Air (land) 1.39 kg Standard
Water (riverbed) 1.59 kg
(+0.20 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

*Caution: On a vertical wall, the magnet retains just approx. 20-30% of its max power.

2. Steel thickness impact

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

3. Heat tolerance

*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) = 0.25

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
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: 010017-2026
Measurement Calculator
Force (pull)

Magnetic Field

Other proposals

The offered product is an extremely powerful cylindrical magnet, produced from durable NdFeB material, which, at dimensions of Ø12x2 mm, guarantees maximum efficiency. 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. 1.39 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 13.66 N with a weight of only 1.7 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component epoxy glues. To ensure stability 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 an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø12x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 2 mm. The value of 13.66 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.7 g. 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 through the diameter if your project requires it.

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
  • Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by external magnetic fields,
  • Thanks to the glossy finish, the surface of nickel, gold-plated, or silver-plated gives an professional appearance,
  • Magnets possess exceptionally strong magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in forming and the capacity to adapt to complex applications,
  • Key role in advanced technology sectors – they are utilized in HDD drives, electric motors, diagnostic systems, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complex shapes.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these magnets can 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

Optimal lifting capacity of a neodymium magnetwhat it depends on?

Holding force of 1.39 kg is a theoretical maximum value executed under specific, ideal conditions:
  • with the contact of a yoke made of special test steel, guaranteeing full magnetic saturation
  • whose transverse dimension reaches at least 10 mm
  • with an ideally smooth contact surface
  • with total lack of distance (without paint)
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

In practice, the real power depends on several key aspects, ranked from most significant:
  • Gap (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (often approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may attract less.
  • Surface finish – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
  • Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet and the plate reduces the load capacity.

Safety rules for work with NdFeB magnets
Mechanical processing

Mechanical processing of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Beware of splinters

Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.

Serious injuries

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

GPS Danger

A powerful magnetic field interferes with the functioning of compasses in smartphones and navigation systems. Do not bring magnets near a smartphone to prevent damaging the sensors.

Nickel allergy

Certain individuals suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Extended handling may cause an allergic reaction. It is best to wear safety gloves.

Keep away from computers

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Operating temperature

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Handling rules

Use magnets consciously. Their huge power can shock even experienced users. Be vigilant and respect their force.

This is not a toy

Neodymium magnets are not intended for children. Eating several magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.

Danger to pacemakers

For implant holders: Strong magnetic fields affect electronics. Keep at least 30 cm distance or request help to handle the magnets.

Safety First! Learn more about risks in the article: Magnet Safety Guide.