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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

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Technical 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

Physical simulation of the assembly - technical parameters

The following data represent the result of a engineering calculation. Results are based on algorithms for the material Nd2Fe14B. Actual conditions might slightly differ from theoretical values. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - 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
low risk
1 mm 1570 Gs
157.0 mT
0.15 kg / 0.33 lbs
149.5 g / 1.5 N
low risk
2 mm 890 Gs
89.0 mT
0.05 kg / 0.11 lbs
48.0 g / 0.5 N
low risk
3 mm 495 Gs
49.5 mT
0.01 kg / 0.03 lbs
14.8 g / 0.1 N
low risk
5 mm 178 Gs
17.8 mT
0.00 kg / 0.00 lbs
1.9 g / 0.0 N
low risk
10 mm 31 Gs
3.1 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
low risk
15 mm 10 Gs
1.0 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
20 mm 4 Gs
0.4 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
30 mm 1 Gs
0.1 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Vertical load (vertical surface)
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

Table 3: Wall mounting (sliding) - 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

Table 4: Material efficiency (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

Table 5: Thermal resistance (material behavior) - power drop
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

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

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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

Table 7: Hazards (implants) - 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
Timepiece 20 Gs (2.0 mT) 1.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.0 cm
Car key 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

Table 8: Impact energy (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

Table 9: Coating parameters (durability)
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)

Table 10: Electrical data (Flux)
MW 5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 524 Mx 5.2 µWb
Pc Coefficient 0.29 Low (Flat)

Table 11: Underwater work (magnet fishing)
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: 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 only ~20% of its max power.

2. Steel saturation

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

3. Thermal stability

*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) = 0.29

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
Magnet pull force

Field Strength

Other proposals

The offered product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø5x1 mm, guarantees the highest energy density. This specific item features an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.32 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 3.12 N with a weight of only 0.15 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way 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 automation, anaerobic resins are used, which do not react with the nickel coating 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 (Ø5x1), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 1 mm. The key parameter here is the holding force amounting to approximately 0.32 kg (force ~3.12 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This rod magnet 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 standard 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.

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • Their magnetic field remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
  • Neodymium magnets are extremely resistant to loss of magnetic properties caused by external field sources,
  • In other words, due to the glossy layer of gold, the element gains a professional look,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • 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...
  • Considering the ability of flexible shaping and customization to unique needs, neodymium magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
  • Wide application in innovative solutions – they serve a role in mass storage devices, electric motors, precision medical tools, as well as other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions

Cons

Problematic aspects of neodymium magnets and ways of using them
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. 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
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complicated shapes in magnets, we recommend using a housing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these products are able to disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum magnetic pulling forcewhat affects it?

The lifting capacity listed is a measurement result executed under specific, ideal conditions:
  • on a plate made of mild steel, perfectly concentrating the magnetic field
  • with a cross-section of at least 10 mm
  • characterized by smoothness
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at standard ambient temperature

Impact of factors on magnetic holding capacity in practice

Real force impacted by working environment parameters, such as (from most important):
  • Distance – existence of foreign body (rust, dirt, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – note 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 – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures reduce magnetic properties and lifting capacity.
  • Plate texture – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

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

H&S for magnets
Cards and drives

Data protection: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Shattering risk

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

Impact on smartphones

A powerful magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Keep magnets near a smartphone to prevent damaging the sensors.

Swallowing risk

Always keep magnets away from children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are very dangerous.

Skin irritation risks

A percentage of the population suffer from a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause a rash. It is best to wear safety gloves.

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Hand protection

Large magnets can break fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Warning for heart patients

People with a heart stimulator have to keep an absolute distance from magnets. The magnetism can interfere with the functioning of the life-saving device.

Respect the power

Handle magnets consciously. Their immense force can shock even experienced users. Stay alert and respect their power.

Flammability

Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Caution! Looking for details? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98