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MW 5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010082

GTIN/EAN: 5906301810810

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.15 g

Magnetization Direction

↑ axial

Load capacity

0.32 kg / 3.12 N

Magnetic Induction

229.95 mT / 2300 Gs

Coating

[NiCuNi] Nickel

technical details »

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Parameters as well as form of a neodymium magnet can be tested using our magnetic calculator.

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Technical data of the product - MW 5x1 / N38 - cylindrical magnet

Specification / characteristics - MW 5x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010082
GTIN/EAN 5906301810810
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 1 mm [±0,1 mm]
Weight 0.15 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.32 kg / 3.12 N
Magnetic Induction ~ ? 229.95 mT / 2300 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x1 / 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 modeling of the assembly - data

The following values are the outcome of a mathematical calculation. Values were calculated on models for the material Nd2Fe14B. Real-world conditions might slightly deviate from the simulation results. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MW 5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2298 Gs
229.8 mT
 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
 safe
1 mm 1570 Gs
157.0 mT
 0.15 kg / 0.33 lbs
149.5 g / 1.5 N
 safe
2 mm 890 Gs
89.0 mT
 0.05 kg / 0.11 lbs
48.0 g / 0.5 N
 safe
3 mm 495 Gs
49.5 mT
 0.01 kg / 0.03 lbs
14.8 g / 0.1 N
 safe
5 mm 178 Gs
17.8 mT
 0.00 kg / 0.00 lbs
1.9 g / 0.0 N
 safe
10 mm 31 Gs
3.1 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 safe
15 mm 10 Gs
1.0 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
20 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
30 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
50 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
Grip strength weakens drastically with every mm of spacing. Remember that even the smallest gap (e.g., dirt, varnish, rust) noticeably weakens the grip. Magnets hold optimally during direct contact; gap weakens the force. Observe how rapidly the load capacity fall, when the magnet does not adhere directly to the steel surface. When planning the assembly, avoid redundant distances.

Table 2: Slippage force (wall)
MW 5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.06 kg / 0.14 lbs
64.0 g / 0.6 N
1 mm Stal (~0.2) 0.03 kg / 0.07 lbs
30.0 g / 0.3 N
2 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 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
This section defines the approximate shear load sufficient to initiate the downward movement of the magnet vertically against a upright steel wall (assuming standard friction coefficient). The holding force is a function of the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.10 kg / 0.21 lbs
96.0 g / 0.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.06 kg / 0.14 lbs
64.0 g / 0.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 lbs
32.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.16 kg / 0.35 lbs
160.0 g / 1.6 N
When mounting a magnet on a vertical surface (e.g., a car body), it will only hold just approx. 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that products slide down easier than they pull off. Planning a wall mount? Consider that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will give way down under a significantly smaller weight. Application of an anti-slip layer can drastically raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.03 kg / 0.07 lbs
32.0 g / 0.3 N
1 mm
25%
 0.08 kg / 0.18 lbs
80.0 g / 0.8 N
2 mm
50%
 0.16 kg / 0.35 lbs
160.0 g / 1.6 N
3 mm
75%
 0.24 kg / 0.53 lbs
240.0 g / 2.4 N
5 mm
100%
 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
10 mm
100%
 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
11 mm
100%
 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
12 mm
100%
 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
A thin sheet is unable to focus the full magnetic flux, which wastes potential of the holder. Should you attach a powerful product to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's potential, you require a sufficiently solid piece of metal. The saturation effect means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.32 kg / 0.71 lbs
320.0 g / 3.1 N
 OK
40 °C -2.2% 0.31 kg / 0.69 lbs
313.0 g / 3.1 N
 OK
60 °C -4.4% 0.31 kg / 0.67 lbs
305.9 g / 3.0 N
80 °C -6.6% 0.30 kg / 0.66 lbs
298.9 g / 2.9 N
100 °C -28.8% 0.23 kg / 0.50 lbs
227.8 g / 2.2 N
Classic neodymiums irreversibly lose power above the temperature limit. Watch out for overheating – excessive heat can permanently damage this magnet. As the temperature rises, the magnet's power temporarily drops. Avoid using this product close to ovens higher than its working range. Too high temperature will lead to destruction of magnetic properties.
*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) are more susceptible to demagnetization sooner than long magnets. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.64 kg / 1.41 lbs
3 860 Gs
0.10 kg / 0.21 lbs
96 g / 0.9 N
 N/A
1 mm 0.47 kg / 1.04 lbs
3 948 Gs
0.07 kg / 0.16 lbs
71 g / 0.7 N
 0.42 kg / 0.94 lbs
~0 Gs
2 mm 0.30 kg / 0.66 lbs
3 141 Gs
0.04 kg / 0.10 lbs
45 g / 0.4 N
 0.27 kg / 0.59 lbs
~0 Gs
3 mm 0.17 kg / 0.38 lbs
2 388 Gs
0.03 kg / 0.06 lbs
26 g / 0.3 N
 0.16 kg / 0.34 lbs
~0 Gs
5 mm 0.05 kg / 0.12 lbs
1 322 Gs
0.01 kg / 0.02 lbs
8 g / 0.1 N
 0.05 kg / 0.10 lbs
~0 Gs
10 mm 0.00 kg / 0.01 lbs
355 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
20 mm 0.00 kg / 0.00 lbs
62 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
5 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
3 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
2 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
1 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
1 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
1 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets attract each other from a much further distance than a neodymium and metal setup. The setup of two magnets produces a massive flux and a wider radius of operation. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the impact force is huge. The repulsion force is slightly lower than the attraction, but still impressive.
*Flux density in repulsion mode reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Important: Estimates show sliding force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - precautionary measures
MW 5x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.0 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) 1.0 cm
Remote 50 Gs (5.0 mT) 1.0 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Powerful magnet radiation poses a serious hazard to IT equipment and medical implants. These neodymiums generate a flux that disrupts operation of digital equipment. Notice: the unseen radiation acts through matter and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 46.59 km/h
(12.94 m/s)
 0.01 J
30 mm 80.68 km/h
(22.41 m/s)
 0.04 J
50 mm 104.16 km/h
(28.93 m/s)
 0.06 J
100 mm 147.30 km/h
(40.92 m/s)
 0.13 J
Neodymium magnets are very brittle – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MW 5x1 / 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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MW 5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 524 Mx 5.2 µWb
Pc Coefficient 0.29 Low (Flat)
Total magnetic flux passing through the pole surface. Key data when building generators and motors. Pc value defines the working geometry.

Table 11: Submerged application
MW 5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.32 kg Standard
Water (riverbed) 0.37 kg
(+0.05 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.
Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.
1. Sliding resistance

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

2. Steel saturation

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29

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.

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%
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: 010082-2026
Measurement Calculator
Pulling force
Field Strength
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The presented product is a very strong rod magnet, produced from durable NdFeB material, which, with dimensions of Ø5x1 mm, guarantees optimal power. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.32 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 3.12 N with a weight of only 0.15 g, this rod is indispensable in electronics 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 chipping the coating of this professional component. To ensure long-term durability in automation, 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 frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø5x1), 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 1 mm. The value of 3.12 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.15 g. 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 1 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • Their power is maintained, and after approximately ten years it decreases only by ~1% (according to research),
  • Magnets perfectly protect themselves against demagnetization caused by foreign field sources,
  • By using a decorative coating of nickel, the element has an professional look,
  • Magnets have impressive magnetic induction on the outer layer,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of detailed creating as well as modifying to complex conditions,
  • Significant place in electronics industry – they are utilized in HDD drives, motor assemblies, medical devices, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Problematic aspects of neodymium magnets: tips and applications.
  • At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Limited ability of making threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical after entering the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The lifting capacity listed is a theoretical maximum value performed under the following configuration:
  • on a block made of mild steel, optimally conducting the magnetic flux
  • with a cross-section of at least 10 mm
  • characterized by lack of roughness
  • under conditions of no distance (metal-to-metal)
  • during pulling in a direction perpendicular to the plane
  • at conditions approx. 20°C

Lifting capacity in real conditions – factors

During everyday use, the actual lifting capacity results from a number of factors, listed from the most important:
  • Air gap (between the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
  • Metal type – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
  • Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets
Pacemakers

Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Permanent damage

Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Machining danger

Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Adults only

Always store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are very dangerous.

Shattering risk

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them cracking into shards.

Bodily injuries

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

Safe distance

Intense magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Warning for allergy sufferers

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, immediately stop working with magnets and wear gloves.

Respect the power

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and respect their force.

Magnetic interference

A powerful magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?