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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

technical parameters »

0.246 ZŁ with VAT / pcs + price for transport

0.200 ZŁ net + 23% VAT / pcs

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Technical details - 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

Engineering modeling of the product - report

The following information constitute the direct effect of a mathematical analysis. Values are based on algorithms for the class Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - 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
 safe
1 mm 1882 Gs
188.2 mT
 0.41 kg / 0.91 LBS
413.1 g / 4.1 N
 safe
2 mm 1175 Gs
117.5 mT
 0.16 kg / 0.35 LBS
161.0 g / 1.6 N
 safe
3 mm 746 Gs
74.6 mT
 0.06 kg / 0.14 LBS
64.9 g / 0.6 N
 safe
5 mm 337 Gs
33.7 mT
 0.01 kg / 0.03 LBS
13.3 g / 0.1 N
 safe
10 mm 77 Gs
7.7 mT
 0.00 kg / 0.00 LBS
0.7 g / 0.0 N
 safe
15 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
20 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
30 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Grip strength decreases significantly with every mm of spacing. Keep in mind that every additional insulation layer (e.g., dirt, varnish, veneer) noticeably diminishes the holding power. Neodymiums work strongest in perfect adhesion; distance nullifies the force. Notice how rapidly the load capacity drop, when the magnet does not adhere flatly to the steel surface. When calculating the arrangement, eliminate additional spacers.

Table 2: Slippage hold (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
The following data indicates the estimated force required to initiate the shifting of the magnet down along a vertical steel wall (considering standard friction coefficient). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 element on a upright plane (e.g., a car body), it will maintain only approx. 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip mean that holders slide down faster than they pull off. Planning a wall mount? Remember that the shear force is much weaker than the maximum static pull force. On a slippery surface, the element will give way down under a noticeably lighter weight. Utilizing a rubberized coating can effectively increase the grip.

Table 4: Steel thickness (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 cannot absorb the entire magnetic field, which squanders power of the magnet. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To utilize 100% of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation causes that on thin elements (e.g., appliance housings), the product holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - power drop
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
Standard neodymium magnets change their properties parameters after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly demagnetize this product. As the temperature rises, the neodymium's capacity briefly decreases. Do not use this product near heat sources exceeding its operating temperature limit. Too high temperature will cause permanent loss of magnetic properties.
*Technical advisory: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently under lower heat stress than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

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

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (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 strong neodymiums attract each other from a significantly greater distance than a magnet and sheet setup. The setup of two magnets creates a more powerful interaction and a further horizon of operation. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the pinch force is huge. The repulsion force is marginally weaker than the connection force, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Figures show friction force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - warnings
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
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
A strong magnetic field is a real danger to IT equipment as well as medical implants. These neodymiums generate a field that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

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 delicate – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or injury to fingers. Be sure to control the product during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Coating parameters (durability)
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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
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 magnet pole. Essential parameter for generator designers and motors. Pc value determines the working geometry.

Table 11: Hydrostatics and buoyancy
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: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Sliding resistance

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

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically reduces the holding force.

3. Heat tolerance

*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

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
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: 020113-2026
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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 10x4x1.5 mm and a weight of 0.45 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 0.88 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.
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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 10x4x1.5 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 0.88 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
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. In practice, this means that this magnet has the greatest attraction force on its main planes (10x4 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 10x4x1.5 mm, which, at a weight of 0.45 g, makes it an element with high energy density. 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.

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • Their magnetic field is durable, and after approximately 10 years it drops only by ~1% (according to research),
  • They have excellent resistance to magnetic field loss as a result of external fields,
  • A magnet with a metallic gold surface has an effective appearance,
  • Magnetic induction on the top side of the magnet remains strong,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Considering the option of accurate forming and customization to unique needs, NdFeB magnets can be modeled in a wide range of forms and dimensions, which expands the range of possible applications,
  • Wide application in innovative solutions – they find application in computer drives, drive modules, advanced medical instruments, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, including:
  • with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ground touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

During everyday use, the actual holding force is determined by several key aspects, ranked from the most important:
  • Clearance – the presence of foreign body (paint, dirt, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Angle of force application – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. Alloy additives weaken the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was measured using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

H&S for magnets
Keep away from children

Adult use only. Small elements can be swallowed, causing severe trauma. Keep away from children and animals.

Sensitization to coating

Certain individuals suffer from a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching can result in dermatitis. We recommend wear protective gloves.

Material brittleness

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.

Caution required

Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Combustion hazard

Powder produced during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Compass and GPS

GPS units and mobile phones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.

Warning for heart patients

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Hand protection

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Demagnetization risk

Monitor thermal conditions. Heating the magnet to high heat will destroy its magnetic structure and strength.

Protect data

Equipment safety: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Safety First! Want to know more? Read our article: Are neodymium magnets dangerous?