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MW 5x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010085

GTIN/EAN: 5906301810841

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.29 g

Magnetization Direction

↑ axial

Load capacity

0.70 kg / 6.83 N

Magnetic Induction

386.50 mT / 3865 Gs

Coating

[NiCuNi] Nickel

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Technical details - MW 5x2 / N38 - cylindrical magnet

Specification / characteristics - MW 5x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010085
GTIN/EAN 5906301810841
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 5 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.29 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.70 kg / 6.83 N
Magnetic Induction ~ ? 386.50 mT / 3865 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x2 / 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 - technical parameters

The following data are the outcome of a mathematical calculation. Results rely on algorithms for the class Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these calculations as a reference point when designing systems.

Table 1: Static force (pull vs distance) - power drop
MW 5x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3860 Gs
386.0 mT
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
safe
1 mm 2460 Gs
246.0 mT
0.28 kg / 0.63 pounds
284.4 g / 2.8 N
safe
2 mm 1384 Gs
138.4 mT
0.09 kg / 0.20 pounds
90.0 g / 0.9 N
safe
3 mm 782 Gs
78.2 mT
0.03 kg / 0.06 pounds
28.8 g / 0.3 N
safe
5 mm 293 Gs
29.3 mT
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
safe
10 mm 55 Gs
5.5 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
15 mm 18 Gs
1.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
20 mm 8 Gs
0.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Slippage force (vertical surface)
MW 5x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.14 kg / 0.31 pounds
140.0 g / 1.4 N
1 mm Stal (~0.2) 0.06 kg / 0.12 pounds
56.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 pounds
18.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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: Wall mounting (shearing) - vertical pull
MW 5x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.21 kg / 0.46 pounds
210.0 g / 2.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.35 kg / 0.77 pounds
350.0 g / 3.4 N

Table 4: Steel thickness (saturation) - power losses
MW 5x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
1 mm
25%
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
2 mm
50%
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
3 mm
75%
0.52 kg / 1.16 pounds
525.0 g / 5.2 N
5 mm
100%
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
10 mm
100%
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
11 mm
100%
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
12 mm
100%
0.70 kg / 1.54 pounds
700.0 g / 6.9 N

Table 5: Working in heat (material behavior) - thermal limit
MW 5x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.70 kg / 1.54 pounds
700.0 g / 6.9 N
OK
40 °C -2.2% 0.68 kg / 1.51 pounds
684.6 g / 6.7 N
OK
60 °C -4.4% 0.67 kg / 1.48 pounds
669.2 g / 6.6 N
80 °C -6.6% 0.65 kg / 1.44 pounds
653.8 g / 6.4 N
100 °C -28.8% 0.50 kg / 1.10 pounds
498.4 g / 4.9 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 5x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.80 kg / 3.98 pounds
5 236 Gs
0.27 kg / 0.60 pounds
271 g / 2.7 N
N/A
1 mm 1.21 kg / 2.68 pounds
6 336 Gs
0.18 kg / 0.40 pounds
182 g / 1.8 N
1.09 kg / 2.41 pounds
~0 Gs
2 mm 0.73 kg / 1.62 pounds
4 921 Gs
0.11 kg / 0.24 pounds
110 g / 1.1 N
0.66 kg / 1.45 pounds
~0 Gs
3 mm 0.42 kg / 0.92 pounds
3 711 Gs
0.06 kg / 0.14 pounds
62 g / 0.6 N
0.37 kg / 0.83 pounds
~0 Gs
5 mm 0.13 kg / 0.29 pounds
2 071 Gs
0.02 kg / 0.04 pounds
19 g / 0.2 N
0.12 kg / 0.26 pounds
~0 Gs
10 mm 0.01 kg / 0.02 pounds
587 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
0.01 kg / 0.02 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
110 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
9 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
5 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
3 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
2 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
2 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
1 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 5x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Timepiece 20 Gs (2.0 mT) 1.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Remote 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Collisions (kinetic energy) - warning
MW 5x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 49.55 km/h
(13.77 m/s)
0.03 J
30 mm 85.82 km/h
(23.84 m/s)
0.08 J
50 mm 110.79 km/h
(30.78 m/s)
0.14 J
100 mm 156.69 km/h
(43.52 m/s)
0.27 J

Table 9: Anti-corrosion coating durability
MW 5x2 / 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 5x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 785 Mx 7.9 µWb
Pc Coefficient 0.50 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 5x2 / N38

Environment Effective steel pull Effect
Air (land) 0.70 kg Standard
Water (riverbed) 0.80 kg
(+0.10 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Wall mount (shear)

*Warning: On a vertical wall, the magnet retains only ~20% of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.

3. Heat tolerance

*For N38 grade, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50

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
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%
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: 010085-2026
Magnet Unit Converter
Pulling force

Magnetic Induction

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The offered product is a very strong cylindrical magnet, made from modern NdFeB material, which, at dimensions of Ø5x2 mm, guarantees the highest energy density. The MW 5x2 / N38 model is characterized by high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 0.70 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 6.83 N with a weight of only 0.29 g, this rod is indispensable in miniature devices 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., 5.1 mm) using two-component epoxy glues. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular 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 (Ø5x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 2 mm. The key parameter here is the holding force amounting to approximately 0.70 kg (force ~6.83 N), which, with such compact dimensions, proves the high grade of the NdFeB material. 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 2 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Advantages

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • Their strength is durable, and after around 10 years it decreases only by ~1% (theoretically),
  • Neodymium magnets remain remarkably resistant to magnetic field loss caused by external magnetic fields,
  • In other words, due to the reflective layer of silver, the element gains visual value,
  • Magnets are distinguished by maximum magnetic induction on the outer side,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of detailed machining as well as optimizing to specific requirements,
  • Key role in advanced technology sectors – they are used in computer drives, motor assemblies, medical equipment, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complicated forms in magnets, we propose using cover - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat affects it?

The specified lifting capacity refers to the maximum value, obtained under laboratory conditions, namely:
  • using a sheet made of mild steel, serving as a magnetic yoke
  • whose transverse dimension is min. 10 mm
  • characterized by lack of roughness
  • under conditions of ideal adhesion (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at temperature room level

Lifting capacity in practice – influencing factors

Please note that the application force may be lower subject to elements below, starting with the most relevant:
  • Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.

H&S for magnets
Flammability

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Safe operation

Use magnets consciously. Their powerful strength can shock even professionals. Be vigilant and respect their power.

This is not a toy

Always keep magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.

Protect data

Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Magnets are brittle

Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Warning for allergy sufferers

Some people experience a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching may cause a rash. It is best to wear protective gloves.

Impact on smartphones

Note: neodymium magnets generate a field that interferes with sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.

Medical implants

Patients with a heart stimulator should maintain an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.

Power loss in heat

Do not overheat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).

Bodily injuries

Watch your fingers. Two large magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Important! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98