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MPL 5x5x1.5 / N38 - lamellar magnet

lamellar magnet

Catalog no 020172

GTIN/EAN: 5906301811787

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

0.28 g

Magnetization Direction

↑ axial

Load capacity

0.58 kg / 5.68 N

Magnetic Induction

293.49 mT / 2935 Gs

Coating

[NiCuNi] Nickel

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

bulk discounts:

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Physical properties - MPL 5x5x1.5 / N38 - lamellar magnet

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

properties
properties values
Cat. no. 020172
GTIN/EAN 5906301811787
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 1.5 mm [±0,1 mm]
Weight 0.28 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.58 kg / 5.68 N
Magnetic Induction ~ ? 293.49 mT / 2935 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1.5 / 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 simulation of the assembly - technical parameters

Presented information constitute the result of a mathematical simulation. Results were calculated on algorithms for the class Nd2Fe14B. Real-world performance might slightly differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 5x5x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2932 Gs
293.2 mT
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
weak grip
1 mm 2036 Gs
203.6 mT
0.28 kg / 0.62 pounds
279.6 g / 2.7 N
weak grip
2 mm 1228 Gs
122.8 mT
0.10 kg / 0.22 pounds
101.7 g / 1.0 N
weak grip
3 mm 727 Gs
72.7 mT
0.04 kg / 0.08 pounds
35.7 g / 0.3 N
weak grip
5 mm 285 Gs
28.5 mT
0.01 kg / 0.01 pounds
5.5 g / 0.1 N
weak grip
10 mm 54 Gs
5.4 mT
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
weak grip
15 mm 18 Gs
1.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
20 mm 8 Gs
0.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Slippage load (wall)
MPL 5x5x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.12 kg / 0.26 pounds
116.0 g / 1.1 N
1 mm Stal (~0.2) 0.06 kg / 0.12 pounds
56.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 pounds
20.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.02 pounds
8.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 5x5x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.12 kg / 0.26 pounds
116.0 g / 1.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.06 kg / 0.13 pounds
58.0 g / 0.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.29 kg / 0.64 pounds
290.0 g / 2.8 N

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

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.06 kg / 0.13 pounds
58.0 g / 0.6 N
1 mm
25%
0.15 kg / 0.32 pounds
145.0 g / 1.4 N
2 mm
50%
0.29 kg / 0.64 pounds
290.0 g / 2.8 N
3 mm
75%
0.43 kg / 0.96 pounds
435.0 g / 4.3 N
5 mm
100%
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
10 mm
100%
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
11 mm
100%
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
12 mm
100%
0.58 kg / 1.28 pounds
580.0 g / 5.7 N

Table 5: Working in heat (stability) - resistance threshold
MPL 5x5x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.58 kg / 1.28 pounds
580.0 g / 5.7 N
OK
40 °C -2.2% 0.57 kg / 1.25 pounds
567.2 g / 5.6 N
OK
60 °C -4.4% 0.55 kg / 1.22 pounds
554.5 g / 5.4 N
80 °C -6.6% 0.54 kg / 1.19 pounds
541.7 g / 5.3 N
100 °C -28.8% 0.41 kg / 0.91 pounds
413.0 g / 4.1 N

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 5x5x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.33 kg / 2.92 pounds
4 518 Gs
0.20 kg / 0.44 pounds
199 g / 1.9 N
N/A
1 mm 0.97 kg / 2.15 pounds
5 027 Gs
0.15 kg / 0.32 pounds
146 g / 1.4 N
0.88 kg / 1.93 pounds
~0 Gs
2 mm 0.64 kg / 1.41 pounds
4 071 Gs
0.10 kg / 0.21 pounds
96 g / 0.9 N
0.57 kg / 1.27 pounds
~0 Gs
3 mm 0.39 kg / 0.86 pounds
3 188 Gs
0.06 kg / 0.13 pounds
59 g / 0.6 N
0.35 kg / 0.78 pounds
~0 Gs
5 mm 0.14 kg / 0.30 pounds
1 886 Gs
0.02 kg / 0.05 pounds
21 g / 0.2 N
0.12 kg / 0.27 pounds
~0 Gs
10 mm 0.01 kg / 0.03 pounds
569 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
0.01 kg / 0.02 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
108 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 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
60 mm 0.00 kg / 0.00 pounds
5 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
3 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
2 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
2 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
1 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 5x5x1.5 / 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
Phone / Smartphone 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

Table 8: Collisions (kinetic energy) - collision effects
MPL 5x5x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 45.91 km/h
(12.75 m/s)
0.02 J
30 mm 79.50 km/h
(22.08 m/s)
0.07 J
50 mm 102.64 km/h
(28.51 m/s)
0.11 J
100 mm 145.15 km/h
(40.32 m/s)
0.23 J

Table 9: Anti-corrosion coating durability
MPL 5x5x1.5 / 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)

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

Parameter Value SI Unit / Description
Magnetic Flux 799 Mx 8.0 µWb
Pc Coefficient 0.36 Low (Flat)

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

Environment Effective steel pull Effect
Air (land) 0.58 kg Standard
Water (riverbed) 0.66 kg
(+0.08 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!
1. Shear force

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

2. Steel thickness impact

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

3. Thermal stability

*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) = 0.36

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%
Environmental data
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: 020172-2026
Measurement Calculator
Pulling force

Magnetic Induction

Other proposals

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 5x5x1.5 mm and a weight of 0.28 g, guarantees the highest quality connection. This magnetic block with a force of 5.68 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 5x5x1.5 / 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.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 0.58 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 5x5x1.5 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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).
Standardly, the MPL 5x5x1.5 / N38 model is magnetized through the thickness (dimension 1.5 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 5x5x1.5 mm, which, at a weight of 0.28 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 0.58 kg (force ~5.68 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Pros and cons of neodymium magnets.

Pros

Besides their tremendous pulling force, neodymium magnets offer the following advantages:
  • They retain magnetic properties for nearly ten years – the loss is just ~1% (based on simulations),
  • Magnets effectively resist against demagnetization caused by external fields,
  • In other words, due to the smooth surface of silver, the element is aesthetically pleasing,
  • Magnets have exceptionally strong magnetic induction on the working surface,
  • 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...
  • Possibility of accurate modeling and modifying to atypical applications,
  • Universal use in modern industrial fields – they are utilized in data components, drive modules, precision medical tools, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these magnets are able to disrupt the diagnostic process medical when they are in the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Detachment force of the magnet in optimal conditionswhat it depends on?

Magnet power is the result of a measurement for optimal configuration, including:
  • using a base made of low-carbon steel, serving as a ideal flux conductor
  • possessing a thickness of at least 10 mm to avoid saturation
  • characterized by even structure
  • under conditions of no distance (surface-to-surface)
  • under vertical application of breakaway force (90-degree angle)
  • at room temperature

Practical aspects of lifting capacity – factors

Please note that the magnet holding may be lower depending on elements below, starting with the most relevant:
  • Clearance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Direction of force – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
  • Surface structure – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Temperature – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets
Nickel allergy

It is widely known that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, avoid direct skin contact or select versions in plastic housing.

Powerful field

Handle with care. Rare earth magnets act from a long distance and connect with huge force, often quicker than you can react.

Warning for heart patients

People with a heart stimulator should maintain an safe separation from magnets. The magnetism can interfere with the functioning of the implant.

Do not overheat magnets

Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Machining danger

Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Keep away from electronics

A powerful magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to prevent breaking the sensors.

Bodily injuries

Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Magnetic media

Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Swallowing risk

These products are not suitable for play. Eating a few magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates urgent medical intervention.

Magnet fragility

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them cracking into small pieces.

Caution! Details about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98