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MPL 5x5x1 / N38 - lamellar magnet

lamellar magnet

Catalog no 020170

GTIN/EAN: 5906301811763

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.19 g

Magnetization Direction

↑ axial

Load capacity

0.34 kg / 3.30 N

Magnetic Induction

209.53 mT / 2095 Gs

Coating

[NiCuNi] Nickel

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0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Lifting power and appearance of neodymium magnets can be analyzed on our our magnetic calculator.

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Detailed specification - MPL 5x5x1 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x1 / N38 - lamellar magnet

properties
properties values
Cat. no. 020170
GTIN/EAN 5906301811763
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 1 mm [±0,1 mm]
Weight 0.19 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.34 kg / 3.30 N
Magnetic Induction ~ ? 209.53 mT / 2095 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1 / 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

Physical analysis of the magnet - technical parameters

These information represent the result of a mathematical analysis. Values were calculated on models for the material Nd2Fe14B. Real-world parameters might slightly deviate from the simulation results. Use these calculations as a supplementary guide for designers.

Table 1: Static force (force vs distance) - characteristics
MPL 5x5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2094 Gs
209.4 mT
 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
 safe
1 mm 1514 Gs
151.4 mT
 0.18 kg / 0.39 LBS
177.8 g / 1.7 N
 safe
2 mm 922 Gs
92.2 mT
 0.07 kg / 0.15 LBS
65.9 g / 0.6 N
 safe
3 mm 543 Gs
54.3 mT
 0.02 kg / 0.05 LBS
22.9 g / 0.2 N
 safe
5 mm 209 Gs
20.9 mT
 0.00 kg / 0.01 LBS
3.4 g / 0.0 N
 safe
10 mm 38 Gs
3.8 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
15 mm 13 Gs
1.3 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
20 mm 6 Gs
0.6 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
30 mm 2 Gs
0.2 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 drops significantly with every mm of distance. Keep in mind that every additional insulation layer (e.g., contamination, varnish, veneer) noticeably reduces the pull force. Magnets work optimally during direct contact; gap drastically cuts the force. See how rapidly the load capacity plummet, when the magnet does not adhere tightly to the steel surface. When designing the assembly, discard additional spacers.

Table 2: Shear force (wall)
MPL 5x5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.07 kg / 0.15 LBS
68.0 g / 0.7 N
1 mm Stal (~0.2) 0.04 kg / 0.08 LBS
36.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 LBS
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 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
The following data calculates the estimated shear load needed to initiate the slippage of the magnet vertically on a vertical metal surface (assuming standard friction coefficient). This value varies with the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 5x5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.10 kg / 0.22 LBS
102.0 g / 1.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.07 kg / 0.15 LBS
68.0 g / 0.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 LBS
34.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.17 kg / 0.37 LBS
170.0 g / 1.7 N
When placing a element on a vertical plane (e.g., a board), it will maintain just about 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip mean that products slide down faster than they pull off. Want to create a wall mount? Note that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a noticeably lighter cargo. Using a rubber coating can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 5x5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.03 kg / 0.07 LBS
34.0 g / 0.3 N
1 mm
25%
 0.09 kg / 0.19 LBS
85.0 g / 0.8 N
2 mm
50%
 0.17 kg / 0.37 LBS
170.0 g / 1.7 N
3 mm
75%
 0.26 kg / 0.56 LBS
255.0 g / 2.5 N
5 mm
100%
 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
10 mm
100%
 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
11 mm
100%
 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
12 mm
100%
 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
A thin metal plate is incapable of conduct the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To achieve the maximum of this neodymium's power, you need a suitably thick piece of steel. The saturation effect causes that on thin elements (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MPL 5x5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
 OK
40 °C -2.2% 0.33 kg / 0.73 LBS
332.5 g / 3.3 N
 OK
60 °C -4.4% 0.33 kg / 0.72 LBS
325.0 g / 3.2 N
80 °C -6.6% 0.32 kg / 0.70 LBS
317.6 g / 3.1 N
100 °C -28.8% 0.24 kg / 0.53 LBS
242.1 g / 2.4 N
Standard neodymium magnets lose power past the thermal threshold. Watch out for overheating – excessive heat can permanently demagnetize this magnet. With every degree above norm, the neodymium's capacity temporarily decreases. Refrain from using this magnet near heat sources higher than its working range. Ignoring the limit will lead to irreversible degradation of magnetic properties.
*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Red status in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 5x5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.68 kg / 1.49 LBS
3 601 Gs
0.10 kg / 0.22 LBS
101 g / 1.0 N
 N/A
1 mm 0.52 kg / 1.15 LBS
3 682 Gs
0.08 kg / 0.17 LBS
78 g / 0.8 N
 0.47 kg / 1.04 LBS
~0 Gs
2 mm 0.35 kg / 0.78 LBS
3 028 Gs
0.05 kg / 0.12 LBS
53 g / 0.5 N
 0.32 kg / 0.70 LBS
~0 Gs
3 mm 0.22 kg / 0.48 LBS
2 388 Gs
0.03 kg / 0.07 LBS
33 g / 0.3 N
 0.20 kg / 0.44 LBS
~0 Gs
5 mm 0.08 kg / 0.17 LBS
1 413 Gs
0.01 kg / 0.03 LBS
12 g / 0.1 N
 0.07 kg / 0.15 LBS
~0 Gs
10 mm 0.01 kg / 0.01 LBS
417 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
77 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
6 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 magnetic products attract each other from a wider radius than a magnet and sheet combination. The setup of magnet-to-magnet produces a massive flux and a larger range of action. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is huge. The levitation is slightly lower than the attraction, but still significant.
*Flux density for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
* Results apply to sliding force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 5x5x1 / 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
Timepiece 20 Gs (2.0 mT) 1.5 cm
Mobile device 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 real danger to electronics and medical implants. These neodymiums generate a flux that prevents correct functioning of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and glass. Exceptional care must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MPL 5x5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 42.67 km/h
(11.85 m/s)
 0.01 J
30 mm 73.89 km/h
(20.53 m/s)
 0.04 J
50 mm 95.40 km/h
(26.50 m/s)
 0.07 J
100 mm 134.91 km/h
(37.48 m/s)
 0.13 J
Neodymium magnets are delicate – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can destroy the magnet or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the neodymium. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MPL 5x5x1 / 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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MPL 5x5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 615 Mx 6.2 µWb
Pc Coefficient 0.26 Low (Flat)
Flux value passing through the pole surface. Key data when building generators as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Physics of underwater searching
MPL 5x5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.34 kg Standard
Water (riverbed) 0.39 kg
(+0.05 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.
1. Vertical hold

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

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly 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) = 0.26

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.

Technical and environmental data
Elemental analysis
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: 020170-2026
Measurement Calculator
Pulling force
Magnetic Induction
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Component MPL 5x5x1 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. As a magnetic bar with high power (approx. 0.34 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is sliding the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 0.34 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 5x5x1 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 5x5x1 / N38 model is magnetized axially (dimension 1 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (5x5 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 5 mm (length), 5 mm (width), and 1 mm (thickness). It is a magnetic block with dimensions 5x5x1 mm and a self-weight of 0.19 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of neodymium magnets.

Strengths

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • Their magnetic field is maintained, and after around ten years it decreases only by ~1% (according to research),
  • Neodymium magnets are distinguished by extremely resistant to demagnetization caused by external field sources,
  • In other words, due to the metallic surface of nickel, the element gains visual value,
  • They feature high magnetic induction at the operating surface, which increases their power,
  • 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...
  • Thanks to modularity in constructing and the capacity to customize to client solutions,
  • Key role in advanced technology sectors – they are utilized in mass storage devices, electric drive systems, advanced medical instruments, as well as technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • 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 secure oxidation as well as corrosion.
  • Limited possibility of making nuts in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

The specified lifting capacity represents the limit force, recorded under optimal environment, namely:
  • using a plate made of low-carbon steel, acting as a circuit closing element
  • with a cross-section minimum 10 mm
  • with an ground touching surface
  • without the slightest air gap between the magnet and steel
  • under axial application of breakaway force (90-degree angle)
  • in stable room temperature

Lifting capacity in real conditions – factors

Please note that the working load will differ subject to the following factors, in order of importance:
  • Clearance – the presence of any layer (rust, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.

Precautions when working with NdFeB magnets
Handling rules

Handle magnets consciously. Their immense force can surprise even experienced users. Be vigilant and do not underestimate their force.

Do not give to children

Adult use only. Small elements pose a choking risk, leading to severe trauma. Keep away from children and animals.

Magnets are brittle

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Fire warning

Powder generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Bone fractures

Danger of trauma: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Nickel allergy

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, immediately stop working with magnets and wear gloves.

Phone sensors

GPS units and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Do not overheat magnets

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Danger to pacemakers

For implant holders: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to work with the magnets.

Important! Details about risks in the article: Magnet Safety Guide.