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MPL 5x5x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020173

GTIN/EAN: 5906301811794

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.38 g

Magnetization Direction

↑ axial

Load capacity

0.77 kg / 7.57 N

Magnetic Induction

360.52 mT / 3605 Gs

Coating

[NiCuNi] Nickel

0.308 with VAT / pcs + price for transport

0.250 ZŁ net + 23% VAT / pcs

bulk discounts:

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Specifications and appearance of a neodymium magnet can be verified with our magnetic mass calculator.

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Physical properties - MPL 5x5x2 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020173
GTIN/EAN 5906301811794
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 5 mm [±0,1 mm]
Width 5 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.38 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.77 kg / 7.57 N
Magnetic Induction ~ ? 360.52 mT / 3605 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x2 / N38 - lamellar 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 simulation of the product - data

The following information are the outcome of a engineering analysis. Values were calculated on algorithms for the material Nd2Fe14B. Actual conditions might slightly differ. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 5x5x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3601 Gs
360.1 mT
0.77 kg / 1.70 lbs
770.0 g / 7.6 N
low risk
1 mm 2436 Gs
243.6 mT
0.35 kg / 0.78 lbs
352.2 g / 3.5 N
low risk
2 mm 1464 Gs
146.4 mT
0.13 kg / 0.28 lbs
127.3 g / 1.2 N
low risk
3 mm 872 Gs
87.2 mT
0.05 kg / 0.10 lbs
45.1 g / 0.4 N
low risk
5 mm 347 Gs
34.7 mT
0.01 kg / 0.02 lbs
7.2 g / 0.1 N
low risk
10 mm 68 Gs
6.8 mT
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
low risk
15 mm 23 Gs
2.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
20 mm 10 Gs
1.0 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Slippage capacity (vertical surface)
MPL 5x5x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.15 kg / 0.34 lbs
154.0 g / 1.5 N
1 mm Stal (~0.2) 0.07 kg / 0.15 lbs
70.0 g / 0.7 N
2 mm Stal (~0.2) 0.03 kg / 0.06 lbs
26.0 g / 0.3 N
3 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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: Vertical assembly (sliding) - vertical pull
MPL 5x5x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.23 kg / 0.51 lbs
231.0 g / 2.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.15 kg / 0.34 lbs
154.0 g / 1.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.08 kg / 0.17 lbs
77.0 g / 0.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.39 kg / 0.85 lbs
385.0 g / 3.8 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 5x5x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.08 kg / 0.17 lbs
77.0 g / 0.8 N
1 mm
25%
0.19 kg / 0.42 lbs
192.5 g / 1.9 N
2 mm
50%
0.39 kg / 0.85 lbs
385.0 g / 3.8 N
3 mm
75%
0.58 kg / 1.27 lbs
577.5 g / 5.7 N
5 mm
100%
0.77 kg / 1.70 lbs
770.0 g / 7.6 N
10 mm
100%
0.77 kg / 1.70 lbs
770.0 g / 7.6 N
11 mm
100%
0.77 kg / 1.70 lbs
770.0 g / 7.6 N
12 mm
100%
0.77 kg / 1.70 lbs
770.0 g / 7.6 N

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 5x5x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.77 kg / 1.70 lbs
770.0 g / 7.6 N
OK
40 °C -2.2% 0.75 kg / 1.66 lbs
753.1 g / 7.4 N
OK
60 °C -4.4% 0.74 kg / 1.62 lbs
736.1 g / 7.2 N
80 °C -6.6% 0.72 kg / 1.59 lbs
719.2 g / 7.1 N
100 °C -28.8% 0.55 kg / 1.21 lbs
548.2 g / 5.4 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 5x5x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.00 kg / 4.41 lbs
5 058 Gs
0.30 kg / 0.66 lbs
300 g / 2.9 N
N/A
1 mm 1.42 kg / 3.13 lbs
6 070 Gs
0.21 kg / 0.47 lbs
213 g / 2.1 N
1.28 kg / 2.82 lbs
~0 Gs
2 mm 0.91 kg / 2.02 lbs
4 871 Gs
0.14 kg / 0.30 lbs
137 g / 1.3 N
0.82 kg / 1.81 lbs
~0 Gs
3 mm 0.56 kg / 1.23 lbs
3 801 Gs
0.08 kg / 0.18 lbs
83 g / 0.8 N
0.50 kg / 1.10 lbs
~0 Gs
5 mm 0.20 kg / 0.43 lbs
2 254 Gs
0.03 kg / 0.06 lbs
29 g / 0.3 N
0.18 kg / 0.39 lbs
~0 Gs
10 mm 0.02 kg / 0.04 lbs
695 Gs
0.00 kg / 0.01 lbs
3 g / 0.0 N
0.02 kg / 0.04 lbs
~0 Gs
20 mm 0.00 kg / 0.00 lbs
136 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
11 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
7 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
4 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
3 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
2 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: Safety (HSE) (electronics) - warnings
MPL 5x5x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.0 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Mobile device 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: Impact energy (cracking risk) - warning
MPL 5x5x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 45.41 km/h
(12.61 m/s)
0.03 J
30 mm 78.63 km/h
(21.84 m/s)
0.09 J
50 mm 101.51 km/h
(28.20 m/s)
0.15 J
100 mm 143.56 km/h
(39.88 m/s)
0.30 J

Table 9: Anti-corrosion coating durability
MPL 5x5x2 / 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)
MPL 5x5x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 940 Mx 9.4 µWb
Pc Coefficient 0.46 Low (Flat)

Table 11: Hydrostatics and buoyancy
MPL 5x5x2 / N38

Environment Effective steel pull Effect
Air (land) 0.77 kg Standard
Water (riverbed) 0.88 kg
(+0.11 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

*Note: On a vertical wall, the magnet holds just ~20% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly weakens the holding force.

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.46

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.

Technical specification and ecology
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%
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: 020173-2026
Measurement Calculator
Pulling force

Magnetic Induction

Other deals

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 5x5x2 mm and a weight of 0.38 g, guarantees premium class connection. As a block magnet with high power (approx. 0.77 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 5x5x2 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 5x5x2 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 0.77 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 5x5x2 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (5x5 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 5x5x2 mm, which, at a weight of 0.38 g, makes it an element with high energy density. It is a magnetic block with dimensions 5x5x2 mm and a self-weight of 0.38 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (theoretically),
  • Magnets perfectly protect themselves against demagnetization caused by ambient magnetic noise,
  • The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnetic induction on the top side of the magnet remains maximum,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Possibility of detailed shaping and modifying to specific applications,
  • Wide application in high-tech industry – they are used in hard drives, motor assemblies, diagnostic systems, as well as technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in small systems

Limitations

Problematic aspects of neodymium magnets and proposals for their use:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Lifting parameters

Best holding force of the magnet in ideal parameterswhat it depends on?

Information about lifting capacity was determined for optimal configuration, taking into account:
  • with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • whose thickness equals approx. 10 mm
  • characterized by lack of roughness
  • with total lack of distance (without impurities)
  • under perpendicular force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Holding efficiency impacted by specific conditions, including (from most important):
  • Clearance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Angle of force application – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin steel causes magnetic saturation, causing part of the power to be lost to the other side.
  • Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate reduces the load capacity.

Safety rules for work with NdFeB magnets
Protective goggles

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Threat to electronics

Do not bring magnets near a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Demagnetization risk

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Impact on smartphones

A strong magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Do not bring magnets near a device to prevent breaking the sensors.

Pacemakers

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Danger to the youngest

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are tragic.

Do not drill into magnets

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Hand protection

Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Handling guide

Handle magnets with awareness. Their immense force can surprise even professionals. Be vigilant and do not underestimate their force.

Nickel allergy

Some people experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in a rash. It is best to use safety gloves.

Safety First! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98