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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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Detailed specification - 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

Technical simulation of the product - technical parameters

Presented information are the direct effect of a engineering calculation. Values were calculated on models for the material Nd2Fe14B. Operational parameters might slightly deviate from the simulation results. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs gap) - 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
low risk
1 mm 2460 Gs
246.0 mT
0.28 kg / 0.63 pounds
284.4 g / 2.8 N
low risk
2 mm 1384 Gs
138.4 mT
0.09 kg / 0.20 pounds
90.0 g / 0.9 N
low risk
3 mm 782 Gs
78.2 mT
0.03 kg / 0.06 pounds
28.8 g / 0.3 N
low risk
5 mm 293 Gs
29.3 mT
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
low risk
10 mm 55 Gs
5.5 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
low risk
15 mm 18 Gs
1.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk
20 mm 8 Gs
0.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
low risk

Table 2: Sliding 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 (sliding) - 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 resistance (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: Two magnets (attraction) - field range
MW 5x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (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) (electronics) - 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
Mechanical watch 20 Gs (2.0 mT) 1.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Car key 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: Dynamics (kinetic energy) - collision effects
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 (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%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

*Caution: On a vertical surface, the magnet holds only approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) drastically limits the holding force.

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

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

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.

Engineering data and GPSR
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%
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: 010085-2026
Measurement Calculator
Magnet pull force

Magnetic Field

Other deals

The presented product is an incredibly powerful rod magnet, composed of modern NdFeB material, which, with dimensions of Ø5x2 mm, guarantees the highest energy density. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.70 kg), this product is in stock from our European logistics center, 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 perfect for building generators, advanced Hall effect 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 cylindrical magnet is indispensable in miniature devices 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 immediate cracking 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 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 warehouse.
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 lifting capacity 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 through the diameter if your project requires it.

Pros and cons of rare earth magnets.

Strengths

Apart from their strong holding force, neodymium magnets have these key benefits:
  • They have unchanged lifting capacity, and over nearly 10 years their attraction force decreases symbolically – ~1% (in testing),
  • Magnets very well protect themselves against demagnetization caused by foreign field sources,
  • In other words, due to the aesthetic finish of silver, the element gains visual value,
  • Neodymium magnets achieve maximum magnetic induction on a their surface, which ensures high operational effectiveness,
  • 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 versatility in constructing and the ability to modify to unusual requirements,
  • Huge importance in electronics industry – they are commonly used in HDD drives, motor assemblies, diagnostic systems, and other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic holder, due to difficulties in creating threads inside the magnet and complex forms.
  • Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these devices can complicate diagnosis medical when they are in the body.
  • With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum lifting capacity of the magnetwhat it depends on?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • on a block made of structural steel, optimally conducting the magnetic flux
  • whose thickness equals approx. 10 mm
  • with a plane perfectly flat
  • with zero gap (no impurities)
  • during detachment in a direction perpendicular to the plane
  • in temp. approx. 20°C

Lifting capacity in real conditions – factors

In practice, the actual holding force results from many variables, presented from most significant:
  • Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
  • Steel grade – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
  • Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate reduces the holding force.

Warnings
Avoid contact if allergic

Certain individuals suffer from a contact allergy to nickel, which is the standard coating for NdFeB magnets. Frequent touching might lead to an allergic reaction. We strongly advise use protective gloves.

Fragile material

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Thermal limits

Watch the temperature. Heating the magnet to high heat will ruin its magnetic structure and strength.

ICD Warning

Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Mechanical processing

Dust created during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

This is not a toy

Neodymium magnets are not suitable for play. Swallowing several magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and requires immediate surgery.

Immense force

Exercise caution. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.

Serious injuries

Large magnets can crush fingers in a fraction of a second. Under no circumstances place your hand betwixt two attracting surfaces.

Keep away from electronics

A powerful magnetic field negatively affects the functioning of magnetometers in phones and navigation systems. Do not bring magnets near a smartphone to prevent breaking the sensors.

Protect data

Do not bring magnets near a wallet, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.

Safety First! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98