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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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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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Technical - 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

Physical simulation of the magnet - report

The following data constitute the outcome of a engineering analysis. Results rely on algorithms for the class Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - interaction chart
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: Shear hold (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: Material efficiency (substrate influence) - sheet metal selection
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: Thermal stability (material behavior) - power drop
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: Safety (HSE) (implants) - precautionary measures
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
Mobile device 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: Impact energy (cracking risk) - collision effects
MW 5x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.34 km/h
(7.04 m/s)
0.01 J
30 mm 25.35 km/h
(7.04 m/s)
0.01 J
50 mm 25.35 km/h
(7.04 m/s)
0.01 J
100 mm 25.35 km/h
(7.04 m/s)
0.01 J

Table 9: Coating parameters (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: Electrical data (Flux)
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

1. Vertical hold

*Note: On a vertical surface, the magnet retains merely ~20% of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Temperature resistance

*For N38 material, 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 specification and ecology

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%

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
Measurement Calculator

Force (pull)


Field Strength

Other offers

This product is an exceptionally strong cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø5x2 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.70 kg), this product is in stock from our European logistics center, 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.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 6.83 N with a weight of only 0.29 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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 available off-the-shelf in our store.
This model is characterized by dimensions Ø5x2 mm, which, at a weight of 0.29 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.70 kg (force ~6.83 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 5 mm. 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.

Advantages as well as disadvantages of neodymium magnets.

Benefits

Besides their tremendous field intensity, neodymium magnets offer the following advantages:
  • Their strength is durable, and after approximately ten years it drops only by ~1% (according to research),
  • Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by external interference,
  • In other words, due to the metallic surface of nickel, the element is aesthetically pleasing,
  • Magnets are distinguished by extremely high magnetic induction on the active area,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to flexibility in constructing and the ability to customize to specific needs,
  • Wide application in advanced technology sectors – they are used in computer drives, electromotive mechanisms, medical devices, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Neodymium magnets lose their force 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 durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest casing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Pull force analysis

Maximum lifting capacity of the magnetwhat contributes to it?

The declared magnet strength concerns the peak performance, recorded under ideal test conditions, specifically:
  • with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with an ideally smooth contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (pull-off, not shear)
  • at standard ambient temperature

Key elements affecting lifting force

Effective lifting capacity impacted by working environment parameters, such as (from most important):
  • Distance – the presence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets
Hand protection

Big blocks can break fingers instantly. Do not place your hand betwixt two attracting surfaces.

This is not a toy

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Store away from kids and pets.

Keep away from computers

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, timepieces).

Material brittleness

Protect your eyes. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Magnetic interference

Note: neodymium magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, tablet, and GPS.

Respect the power

Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Think ahead.

Pacemakers

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Demagnetization risk

Control the heat. Heating the magnet to high heat will destroy its properties and strength.

Fire risk

Dust created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

Sensitization to coating

A percentage of the population experience a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to an allergic reaction. We recommend wear safety gloves.

Danger! Looking for details? Check our post: Are neodymium magnets dangerous?