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MPL 15x10x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020388

GTIN/EAN: 5906301811879

5.00

length

15 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

2.25 g

Magnetization Direction

↑ axial

Load capacity

1.57 kg / 15.45 N

Magnetic Induction

180.53 mT / 1805 Gs

Coating

[NiCuNi] Nickel

technical parameters »

1.316 ZŁ with VAT / pcs + price for transport

1.070 ZŁ net + 23% VAT / pcs

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Technical - MPL 15x10x2 / N38 - lamellar magnet

Specification / characteristics - MPL 15x10x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020388
GTIN/EAN 5906301811879
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 15 mm [±0,1 mm]
Width 10 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 2.25 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.57 kg / 15.45 N
Magnetic Induction ~ ? 180.53 mT / 1805 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 15x10x2 / 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 simulation of the magnet - data

These data represent the direct effect of a mathematical analysis. Values rely on models for the class Nd2Fe14B. Actual conditions may differ. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs gap) - power drop
MPL 15x10x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1805 Gs
180.5 mT
 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
 safe
1 mm 1628 Gs
162.8 mT
 1.28 kg / 2.82 pounds
1278.3 g / 12.5 N
 safe
2 mm 1394 Gs
139.4 mT
 0.94 kg / 2.06 pounds
936.3 g / 9.2 N
 safe
3 mm 1152 Gs
115.2 mT
 0.64 kg / 1.41 pounds
639.9 g / 6.3 N
 safe
5 mm 751 Gs
75.1 mT
 0.27 kg / 0.60 pounds
271.5 g / 2.7 N
 safe
10 mm 262 Gs
26.2 mT
 0.03 kg / 0.07 pounds
33.1 g / 0.3 N
 safe
15 mm 110 Gs
11.0 mT
 0.01 kg / 0.01 pounds
5.8 g / 0.1 N
 safe
20 mm 54 Gs
5.4 mT
 0.00 kg / 0.00 pounds
1.4 g / 0.0 N
 safe
30 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 pounds
0.2 g / 0.0 N
 safe
50 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Magnetic force weakens drastically with every mm of gap. Keep in mind that even the smallest gap (e.g., dirt, varnish, rust) noticeably reduces the pull force. Magnets hold optimally in perfect adhesion; air break nullifies the force. Notice how quickly the parameters plummet, when the product does not adhere directly to the steel surface. When calculating the mounting, discard unnecessary gaps.

Table 2: Shear force (wall)
MPL 15x10x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.31 kg / 0.69 pounds
314.0 g / 3.1 N
1 mm Stal (~0.2) 0.26 kg / 0.56 pounds
256.0 g / 2.5 N
2 mm Stal (~0.2) 0.19 kg / 0.41 pounds
188.0 g / 1.8 N
3 mm Stal (~0.2) 0.13 kg / 0.28 pounds
128.0 g / 1.3 N
5 mm Stal (~0.2) 0.05 kg / 0.12 pounds
54.0 g / 0.5 N
10 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below defines the estimated shear load sufficient to initiate the downward movement of the magnet vertically on a vertical metal surface (considering standard friction coefficient). This value is a function of the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 15x10x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.47 kg / 1.04 pounds
471.0 g / 4.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.31 kg / 0.69 pounds
314.0 g / 3.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.16 kg / 0.35 pounds
157.0 g / 1.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.79 kg / 1.73 pounds
785.0 g / 7.7 N
When hanging a holder on a vertical surface (e.g., a board), it will only hold just approx. 20%-30% of its nominal power. Gravity and a low friction coefficient cause that magnets move down faster than they pop off the substrate. Designing a hanger? Remember that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a significantly smaller cargo. Application of an anti-slip coating can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 15x10x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.16 kg / 0.35 pounds
157.0 g / 1.5 N
1 mm
25%
 0.39 kg / 0.87 pounds
392.5 g / 3.9 N
2 mm
50%
 0.79 kg / 1.73 pounds
785.0 g / 7.7 N
3 mm
75%
 1.18 kg / 2.60 pounds
1177.5 g / 11.6 N
5 mm
100%
 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
10 mm
100%
 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
11 mm
100%
 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
12 mm
100%
 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
A thin sheet is incapable of absorb the entire magnetic field, which squanders power of the holder. Should you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To achieve the maximum of this magnet's potential, you need a suitably thick piece of metal. The material oversaturation means that on delicate walls (e.g., appliance housings), the product works worse. We advise picking the steel thickness from these parameters.

Table 5: Thermal resistance (stability) - resistance threshold
MPL 15x10x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.57 kg / 3.46 pounds
1570.0 g / 15.4 N
 OK
40 °C -2.2% 1.54 kg / 3.39 pounds
1535.5 g / 15.1 N
 OK
60 °C -4.4% 1.50 kg / 3.31 pounds
1500.9 g / 14.7 N
80 °C -6.6% 1.47 kg / 3.23 pounds
1466.4 g / 14.4 N
100 °C -28.8% 1.12 kg / 2.46 pounds
1117.8 g / 11.0 N
Classic neodymiums change their properties parameters above the temperature limit. Watch out for overheating – high temperature can permanently destroy this product. As the temperature rises, the magnet's capacity briefly lowers. Do not use this magnet close to heaters exceeding its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetic properties.
*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner than long magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 15x10x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.01 kg / 6.64 pounds
3 196 Gs
0.45 kg / 1.00 pounds
452 g / 4.4 N
 N/A
1 mm 2.76 kg / 6.09 pounds
3 456 Gs
0.41 kg / 0.91 pounds
414 g / 4.1 N
 2.49 kg / 5.48 pounds
~0 Gs
2 mm 2.45 kg / 5.41 pounds
3 257 Gs
0.37 kg / 0.81 pounds
368 g / 3.6 N
 2.21 kg / 4.87 pounds
~0 Gs
3 mm 2.12 kg / 4.68 pounds
3 029 Gs
0.32 kg / 0.70 pounds
318 g / 3.1 N
 1.91 kg / 4.21 pounds
~0 Gs
5 mm 1.49 kg / 3.30 pounds
2 543 Gs
0.22 kg / 0.49 pounds
224 g / 2.2 N
 1.35 kg / 2.97 pounds
~0 Gs
10 mm 0.52 kg / 1.15 pounds
1 501 Gs
0.08 kg / 0.17 pounds
78 g / 0.8 N
 0.47 kg / 1.03 pounds
~0 Gs
20 mm 0.06 kg / 0.14 pounds
524 Gs
0.01 kg / 0.02 pounds
10 g / 0.1 N
 0.06 kg / 0.13 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
60 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
37 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
24 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
16 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
12 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
9 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products interact from a much further distance than a neodymium and metal combination. The setup of two magnets generates a stronger field and a further horizon of action. Want to build a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the pinch force is extreme. The levitation is slightly lower than the attraction, but still significant.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Calculations refer to friction force of a pair of same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MPL 15x10x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a serious hazard to IT equipment and pacemakers. These NdFeB products produce a flux that destroys function of sensitive medical devices. Remember: the invisible magnetic field acts through matter and housings. Exceptional care must be taken by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MPL 15x10x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 26.99 km/h
(7.50 m/s)
 0.06 J
30 mm 46.15 km/h
(12.82 m/s)
 0.18 J
50 mm 59.57 km/h
(16.55 m/s)
 0.31 J
100 mm 84.24 km/h
(23.40 m/s)
 0.62 J
Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Striking energy can cause material chips or injury to fingers. Always hold the magnet during bringing near metal so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MPL 15x10x2 / 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)
MPL 15x10x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 194 Mx 31.9 µWb
Pc Coefficient 0.22 Low (Flat)
Flux value emitted by the magnet pole. Key data for generator designers and motors. The Pc coefficient determines the working geometry.

Table 11: Physics of underwater searching
MPL 15x10x2 / N38

Environment Effective steel pull Effect
Air (land) 1.57 kg Standard
Water (riverbed) 1.80 kg
(+0.23 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.
1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains only a fraction of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Power loss vs temp

*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) = 0.22

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 specification and ecology
Material specification
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: 020388-2026
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Model MPL 15x10x2 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 1.57 kg), this product is available off-the-shelf from our warehouse in Poland. Additionally, 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 1.57 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 1.57 kg), they are ideal as hidden locks 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.
This model is characterized by dimensions 15x10x2 mm, which, at a weight of 2.25 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 1.57 kg (force ~15.45 N), which, with such a compact shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of rare earth magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
  • Neodymium magnets are extremely resistant to demagnetization caused by external interference,
  • Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an visually attractive appearance,
  • Magnets possess huge magnetic induction on the surface,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in constructing and the ability to adapt to specific needs,
  • Versatile presence in advanced technology sectors – they are commonly used in computer drives, electromotive mechanisms, medical equipment, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions

Limitations

Cons of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complex shapes in magnets, we recommend using casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • Due to complex production process, their price is higher than average,

Holding force characteristics

Highest magnetic holding force – what affects it?

The lifting capacity listed is a result of laboratory testing conducted under standard conditions:
  • with the use of a sheet made of special test steel, guaranteeing maximum field concentration
  • with a cross-section minimum 10 mm
  • characterized by even structure
  • without the slightest clearance between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • at conditions approx. 20°C

Lifting capacity in practice – influencing factors

It is worth knowing that the application force may be lower subject to elements below, in order of importance:
  • Distance – existence of any layer (paint, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
  • Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets
Caution required

Use magnets with awareness. Their powerful strength can surprise even professionals. Plan your moves and respect their force.

Do not give to children

Only for adults. Small elements can be swallowed, leading to severe trauma. Store away from kids and pets.

Shattering risk

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

Allergic reactions

A percentage of the population experience a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching may cause an allergic reaction. We strongly advise use protective gloves.

Medical implants

Warning for patients: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to handle the magnets.

Heat warning

Avoid heat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Serious injuries

Risk of injury: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Dust is flammable

Dust produced during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Phone sensors

Navigation devices and smartphones are highly susceptible to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Cards and drives

Avoid bringing magnets close to a purse, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.

Attention! Want to know more? Read our article: Why are neodymium magnets dangerous?