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MPL 10x4x1.5 / N38 - lamellar magnet

lamellar magnet

Catalog no 020113

GTIN/EAN: 5906301811190

5.00

length

10 mm [±0,1 mm]

Width

4 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

0.45 g

Magnetization Direction

↑ axial

Load capacity

0.88 kg / 8.65 N

Magnetic Induction

274.96 mT / 2750 Gs

Coating

[NiCuNi] Nickel

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0.246 ZŁ with VAT / pcs + price for transport

0.200 ZŁ net + 23% VAT / pcs

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Product card - MPL 10x4x1.5 / N38 - lamellar magnet

Specification / characteristics - MPL 10x4x1.5 / N38 - lamellar magnet

properties
properties values
Cat. no. 020113
GTIN/EAN 5906301811190
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 10 mm [±0,1 mm]
Width 4 mm [±0,1 mm]
Height 1.5 mm [±0,1 mm]
Weight 0.45 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.88 kg / 8.65 N
Magnetic Induction ~ ? 274.96 mT / 2750 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x4x1.5 / 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

Technical modeling of the product - report

These information represent the direct effect of a engineering calculation. Values rely on models for the class Nd2Fe14B. Operational performance may deviate from the simulation results. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MPL 10x4x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2747 Gs
274.7 mT
 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
 low risk
1 mm 1882 Gs
188.2 mT
 0.41 kg / 0.91 LBS
413.1 g / 4.1 N
 low risk
2 mm 1175 Gs
117.5 mT
 0.16 kg / 0.35 LBS
161.0 g / 1.6 N
 low risk
3 mm 746 Gs
74.6 mT
 0.06 kg / 0.14 LBS
64.9 g / 0.6 N
 low risk
5 mm 337 Gs
33.7 mT
 0.01 kg / 0.03 LBS
13.3 g / 0.1 N
 low risk
10 mm 77 Gs
7.7 mT
 0.00 kg / 0.00 LBS
0.7 g / 0.0 N
 low risk
15 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 low risk
20 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
30 mm 4 Gs
0.4 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
Pulling power decreases drastically with every mm of spacing. Note that even a very thin break (e.g., dirt, varnish, veneer) noticeably diminishes the holding power. Magnets work optimally in perfect adhesion; gap nullifies the force. Analyze how quickly the load capacity plummet, when the magnet does not touch directly to the steel surface. When calculating the arrangement, avoid redundant distances.

Table 2: Vertical force (vertical surface)
MPL 10x4x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.18 kg / 0.39 LBS
176.0 g / 1.7 N
1 mm Stal (~0.2) 0.08 kg / 0.18 LBS
82.0 g / 0.8 N
2 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
3 mm Stal (~0.2) 0.01 kg / 0.03 LBS
12.0 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
This section calculates the estimated force required to cause the shifting of the magnet down along a vertical metal surface (assuming standard friction). This value is relative to the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 10x4x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.26 kg / 0.58 LBS
264.0 g / 2.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.18 kg / 0.39 LBS
176.0 g / 1.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.09 kg / 0.19 LBS
88.0 g / 0.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
When hanging a magnet on a upright plane (e.g., a board), it will only hold only about 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip cause that holders move down easier than they pull off. Designing a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a noticeably lighter weight. Application of an anti-slip coating can effectively improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MPL 10x4x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.09 kg / 0.19 LBS
88.0 g / 0.9 N
1 mm
25%
 0.22 kg / 0.49 LBS
220.0 g / 2.2 N
2 mm
50%
 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
3 mm
75%
 0.66 kg / 1.46 LBS
660.0 g / 6.5 N
5 mm
100%
 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
10 mm
100%
 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
11 mm
100%
 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
12 mm
100%
 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
A thin metal plate is unable to take in the entire magnetic field, which weakens actual performance of the magnet. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this neodymium's potential, you need a suitably thick backing of steel. The material oversaturation means that on sheet metal structures (e.g., appliance housings), the magnet works worse. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MPL 10x4x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.88 kg / 1.94 LBS
880.0 g / 8.6 N
 OK
40 °C -2.2% 0.86 kg / 1.90 LBS
860.6 g / 8.4 N
 OK
60 °C -4.4% 0.84 kg / 1.85 LBS
841.3 g / 8.3 N
80 °C -6.6% 0.82 kg / 1.81 LBS
821.9 g / 8.1 N
100 °C -28.8% 0.63 kg / 1.38 LBS
626.6 g / 6.1 N
Ordinary NdFeB products change their properties power above the temperature limit. Watch out for overheating – excessive heat can permanently demagnetize this product. With increasing heat, the neodymium's capacity momentarily lowers. Do not use this magnet in hot environments exceeding its safe range. Exceeding the critical threshold will result in permanent loss of magnetic properties.
*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) are more susceptible to demagnetization sooner compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MPL 10x4x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.86 kg / 4.10 LBS
4 229 Gs
0.28 kg / 0.62 LBS
279 g / 2.7 N
 N/A
1 mm 1.34 kg / 2.95 LBS
4 661 Gs
0.20 kg / 0.44 LBS
201 g / 2.0 N
 1.21 kg / 2.66 LBS
~0 Gs
2 mm 0.87 kg / 1.93 LBS
3 764 Gs
0.13 kg / 0.29 LBS
131 g / 1.3 N
 0.79 kg / 1.73 LBS
~0 Gs
3 mm 0.55 kg / 1.21 LBS
2 978 Gs
0.08 kg / 0.18 LBS
82 g / 0.8 N
 0.49 kg / 1.09 LBS
~0 Gs
5 mm 0.21 kg / 0.47 LBS
1 864 Gs
0.03 kg / 0.07 LBS
32 g / 0.3 N
 0.19 kg / 0.43 LBS
~0 Gs
10 mm 0.03 kg / 0.06 LBS
675 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
 0.03 kg / 0.06 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
154 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
13 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
8 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
5 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
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnets interact from a significantly greater distance than a neodymium and metal setup. Such a system of two magnets generates a stronger field and a further horizon of performance. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is huge. The levitation is marginally weaker than the connection force, but still large.
*Field value in repulsion mode drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Results demonstrate friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - precautionary measures
MPL 10x4x1.5 / 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
Remote 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
Extremely neodym field poses a large risk to electronic devices as well as pacemakers. These neodymiums produce a flux that prevents correct functioning of digital equipment. Notice: the invisible magnetic field acts through matter and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MPL 10x4x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 44.62 km/h
(12.39 m/s)
 0.03 J
30 mm 77.25 km/h
(21.46 m/s)
 0.10 J
50 mm 99.72 km/h
(27.70 m/s)
 0.17 J
100 mm 141.03 km/h
(39.18 m/s)
 0.35 J
Neodymium magnets are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Corrosion resistance
MPL 10x4x1.5 / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Pc)
MPL 10x4x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 104 Mx 11.0 µWb
Pc Coefficient 0.30 Low (Flat)
Total magnetic flux emitted by the pole surface. Essential parameter in coil applications and motors. The Pc coefficient defines the working geometry.

Table 11: Submerged application
MPL 10x4x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.88 kg Standard
Water (riverbed) 1.01 kg
(+0.13 kg buoyancy gain)
+14.5%
Rust risk: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Vertical hold

*Caution: On a vertical wall, the magnet retains only a fraction of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. computer case) drastically limits the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.30

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%
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: 020113-2026
Measurement Calculator
Force (pull)
Field Strength
Put your value in a single slot to see the conversion in the other fields at once.

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This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 10x4x1.5 mm and a weight of 0.45 g, guarantees premium class connection. As a magnetic bar with high power (approx. 0.88 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating protects 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 0.88 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 10x4x1.5 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 0.88 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for hanging tools 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. 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. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 10 mm (length), 4 mm (width), and 1.5 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 0.88 kg (force ~8.65 N), which, with such a compact shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of rare earth magnets.

Strengths

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They do not lose strength, even during nearly ten years – the reduction in strength is only ~1% (theoretically),
  • Neodymium magnets prove to be highly resistant to loss of magnetic properties caused by external field sources,
  • By applying a shiny coating of nickel, the element presents an aesthetic look,
  • They show high magnetic induction at the operating surface, which improves attraction properties,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Due to the possibility of free molding and customization to individualized solutions, NdFeB magnets can be modeled in a wide range of shapes and sizes, which expands the range of possible applications,
  • Significant place in modern industrial fields – they are used in mass storage devices, brushless drives, advanced medical instruments, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions

Cons

What to avoid - cons of neodymium magnets and proposals for their use:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • Due to limitations in realizing nuts and complicated forms in magnets, we propose using casing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. Additionally, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Information about lifting capacity is the result of a measurement for optimal configuration, taking into account:
  • with the application of a sheet made of special test steel, guaranteeing maximum field concentration
  • with a thickness of at least 10 mm
  • with an polished contact surface
  • without the slightest insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at ambient temperature room level

Lifting capacity in real conditions – factors

Effective lifting capacity is affected by working environment parameters, including (from most important):
  • Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal 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 – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Safe handling of neodymium magnets
Cards and drives

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

Mechanical processing

Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Conscious usage

Use magnets with awareness. Their immense force can surprise even experienced users. Be vigilant and do not underestimate their power.

Danger to pacemakers

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.

Hand protection

Large magnets can break fingers in a fraction of a second. Do not place your hand between two strong magnets.

Maximum temperature

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.

Swallowing risk

Adult use only. Tiny parts can be swallowed, causing serious injuries. Store out of reach of children and animals.

Shattering risk

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Allergy Warning

Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact and opt for coated magnets.

Precision electronics

A strong magnetic field negatively affects the functioning of compasses in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Warning! Looking for details? Check our post: Are neodymium magnets dangerous?