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MW 5x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010084

GTIN/EAN: 5906301810834

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

0.48 kg / 4.68 N

Magnetic Induction

610.03 mT / 6100 Gs

Coating

[NiCuNi] Nickel

1.107 with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

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Product card - MW 5x15 / N38 - cylindrical magnet

Specification / characteristics - MW 5x15 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010084
GTIN/EAN 5906301810834
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 15 mm [±0,1 mm]
Weight 2.21 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.48 kg / 4.68 N
Magnetic Induction ~ ? 610.03 mT / 6100 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / 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

Presented information are the outcome of a physical simulation. Results are based on algorithms for the class Nd2Fe14B. Real-world performance might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - interaction chart
MW 5x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6091 Gs
609.1 mT
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
safe
1 mm 3823 Gs
382.3 mT
0.19 kg / 0.42 pounds
189.1 g / 1.9 N
safe
2 mm 2261 Gs
226.1 mT
0.07 kg / 0.15 pounds
66.1 g / 0.6 N
safe
3 mm 1378 Gs
137.8 mT
0.02 kg / 0.05 pounds
24.6 g / 0.2 N
safe
5 mm 607 Gs
60.7 mT
0.00 kg / 0.01 pounds
4.8 g / 0.0 N
safe
10 mm 154 Gs
15.4 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
safe
15 mm 63 Gs
6.3 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
20 mm 32 Gs
3.2 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 12 Gs
1.2 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Shear load (vertical surface)
MW 5x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.10 kg / 0.21 pounds
96.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.08 pounds
38.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 pounds
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 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) - behavior on slippery surfaces
MW 5x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.14 kg / 0.32 pounds
144.0 g / 1.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.24 kg / 0.53 pounds
240.0 g / 2.4 N

Table 4: Steel thickness (saturation) - power losses
MW 5x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
1 mm
25%
0.12 kg / 0.26 pounds
120.0 g / 1.2 N
2 mm
50%
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
3 mm
75%
0.36 kg / 0.79 pounds
360.0 g / 3.5 N
5 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
10 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
11 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
12 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N

Table 5: Thermal resistance (material behavior) - power drop
MW 5x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.48 kg / 1.06 pounds
480.0 g / 4.7 N
OK
40 °C -2.2% 0.47 kg / 1.03 pounds
469.4 g / 4.6 N
OK
60 °C -4.4% 0.46 kg / 1.01 pounds
458.9 g / 4.5 N
OK
80 °C -6.6% 0.45 kg / 0.99 pounds
448.3 g / 4.4 N
100 °C -28.8% 0.34 kg / 0.75 pounds
341.8 g / 3.4 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 5x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.49 kg / 9.90 pounds
6 154 Gs
0.67 kg / 1.49 pounds
674 g / 6.6 N
N/A
1 mm 2.91 kg / 6.42 pounds
9 810 Gs
0.44 kg / 0.96 pounds
437 g / 4.3 N
2.62 kg / 5.78 pounds
~0 Gs
2 mm 1.77 kg / 3.90 pounds
7 646 Gs
0.27 kg / 0.59 pounds
265 g / 2.6 N
1.59 kg / 3.51 pounds
~0 Gs
3 mm 1.05 kg / 2.31 pounds
5 880 Gs
0.16 kg / 0.35 pounds
157 g / 1.5 N
0.94 kg / 2.08 pounds
~0 Gs
5 mm 0.37 kg / 0.82 pounds
3 507 Gs
0.06 kg / 0.12 pounds
56 g / 0.5 N
0.34 kg / 0.74 pounds
~0 Gs
10 mm 0.04 kg / 0.10 pounds
1 213 Gs
0.01 kg / 0.01 pounds
7 g / 0.1 N
0.04 kg / 0.09 pounds
~0 Gs
20 mm 0.00 kg / 0.01 pounds
309 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
37 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
24 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
16 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
11 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
8 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
6 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 5x15 / 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) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Car key 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 (cracking risk) - warning
MW 5x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 14.87 km/h
(4.13 m/s)
0.02 J
30 mm 25.74 km/h
(7.15 m/s)
0.06 J
50 mm 33.23 km/h
(9.23 m/s)
0.09 J
100 mm 47.00 km/h
(13.06 m/s)
0.19 J

Table 9: Surface protection spec
MW 5x15 / 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 5x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 382 Mx 13.8 µWb
Pc Coefficient 1.38 High (Stable)

Table 11: Underwater work (magnet fishing)
MW 5x15 / N38

Environment Effective steel pull Effect
Air (land) 0.48 kg Standard
Water (riverbed) 0.55 kg
(+0.07 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

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

2. Steel thickness impact

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.38

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
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%
Environmental data
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: 010084-2026
Quick Unit Converter
Force (pull)

Field Strength

Other products

The offered product is a very strong cylinder magnet, composed of durable NdFeB material, which, at dimensions of Ø5x15 mm, guarantees maximum efficiency. The MW 5x15 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.48 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects 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 magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 4.68 N with a weight of only 2.21 g, this rod 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., 5.1 mm) using 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 professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø5x15), 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 15 mm. The key parameter here is the holding force amounting to approximately 0.48 kg (force ~4.68 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 15 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.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (according to research),
  • Neodymium magnets are distinguished by exceptionally resistant to loss of magnetic properties caused by external magnetic fields,
  • A magnet with a metallic nickel surface has an effective appearance,
  • Magnets possess maximum magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to modularity in constructing and the capacity to modify to client solutions,
  • Universal use in high-tech industry – they find application in mass storage devices, brushless drives, advanced medical instruments, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their durability
  • Neodymium magnets lose their power 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 stability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited ability of creating threads in the magnet and complicated forms - recommended is casing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these devices can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum lifting force for a neodymium magnet – what contributes to it?

Breakaway force was defined for the most favorable conditions, taking into account:
  • with the application of a yoke made of special test steel, ensuring maximum field concentration
  • whose thickness reaches at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of no distance (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Magnet lifting force in use – key factors

Real force is affected by working environment parameters, mainly (from priority):
  • Distance – existence of any layer (rust, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
  • Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the load capacity.

Safe handling of NdFeB magnets
Machining danger

Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Medical interference

For implant holders: Powerful magnets affect medical devices. Maintain at least 30 cm distance or request help to handle the magnets.

Adults only

Always store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands and choose coated magnets.

Beware of splinters

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them cracking into small pieces.

Keep away from computers

Equipment safety: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

Do not underestimate power

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.

Finger safety

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Permanent damage

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

GPS and phone interference

Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Caution! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98