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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

check properties »

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Force and form of neodymium magnets can be analyzed with our online calculation tool.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - 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

Engineering simulation of the assembly - data

The following data are the outcome of a engineering analysis. Values rely on algorithms for the class Nd2Fe14B. Real-world parameters might slightly differ. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - 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 lbs
580.0 g / 5.7 N
 safe
1 mm 2036 Gs
203.6 mT
 0.28 kg / 0.62 lbs
279.6 g / 2.7 N
 safe
2 mm 1228 Gs
122.8 mT
 0.10 kg / 0.22 lbs
101.7 g / 1.0 N
 safe
3 mm 727 Gs
72.7 mT
 0.04 kg / 0.08 lbs
35.7 g / 0.3 N
 safe
5 mm 285 Gs
28.5 mT
 0.01 kg / 0.01 lbs
5.5 g / 0.1 N
 safe
10 mm 54 Gs
5.4 mT
 0.00 kg / 0.00 lbs
0.2 g / 0.0 N
 safe
15 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
20 mm 8 Gs
0.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
30 mm 3 Gs
0.3 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
Pulling power decreases sharply per each millimeter of spacing. Keep in mind that even a microscopic distance (e.g., contamination, paint, rust) noticeably reduces the pull force. Neodymiums work most effectively during direct contact; air break kills the power. Analyze how rapidly the pull force drop, when the product does not adhere tightly to the metal substrate. When designing the mounting, discard redundant distances.

Table 2: Shear load (vertical surface)
MPL 5x5x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.12 kg / 0.26 lbs
116.0 g / 1.1 N
1 mm Stal (~0.2) 0.06 kg / 0.12 lbs
56.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 lbs
20.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.02 lbs
8.0 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 defines the theoretical weight limit required to cause the downward movement of the magnet vertically along a upright steel wall (assuming standard friction). This parameter varies with the separation distance between the magnet and the surface.

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 lbs
174.0 g / 1.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.12 kg / 0.26 lbs
116.0 g / 1.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.06 kg / 0.13 lbs
58.0 g / 0.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.29 kg / 0.64 lbs
290.0 g / 2.8 N
When mounting a holder on a vertical surface (e.g., a board), it will only hold barely about 1/5 of its nominal power. Gravity as well as a weak degree of grip influence the fact that magnets slip easier than they pop off the substrate. Designing a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will give way down under a much lighter weight. Using a rubber coating can drastically increase the grip.

Table 4: Material efficiency (saturation) - power losses
MPL 5x5x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.06 kg / 0.13 lbs
58.0 g / 0.6 N
1 mm
25%
 0.15 kg / 0.32 lbs
145.0 g / 1.4 N
2 mm
50%
 0.29 kg / 0.64 lbs
290.0 g / 2.8 N
3 mm
75%
 0.43 kg / 0.96 lbs
435.0 g / 4.3 N
5 mm
100%
 0.58 kg / 1.28 lbs
580.0 g / 5.7 N
10 mm
100%
 0.58 kg / 1.28 lbs
580.0 g / 5.7 N
11 mm
100%
 0.58 kg / 1.28 lbs
580.0 g / 5.7 N
12 mm
100%
 0.58 kg / 1.28 lbs
580.0 g / 5.7 N
A thin metal plate is incapable of focus the full magnetic flux, which squanders power of the holder. If you install a neodymium to a weak sheet, the field will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's potential, you need a suitably thick piece of steel. The material oversaturation means that on thin elements (e.g., appliance housings), the holder works worse. We recommend selecting the steel dimension based on the following data.

Table 5: Working in heat (stability) - thermal limit
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 lbs
580.0 g / 5.7 N
 OK
40 °C -2.2% 0.57 kg / 1.25 lbs
567.2 g / 5.6 N
 OK
60 °C -4.4% 0.55 kg / 1.22 lbs
554.5 g / 5.4 N
80 °C -6.6% 0.54 kg / 1.19 lbs
541.7 g / 5.3 N
100 °C -28.8% 0.41 kg / 0.91 lbs
413.0 g / 4.1 N
Ordinary NdFeB products irreversibly lose parameters after exceeding the maximum temperature. Protect against heat – heat can irreversibly destroy this magnet. With increasing heat, the neodymium's power temporarily drops. Do not use this magnet near heat sources exceeding its operating temperature limit. Too high temperature will cause permanent loss of magnetism.
*Engineering note: Temperature resistance is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

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

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.33 kg / 2.92 lbs
4 518 Gs
0.20 kg / 0.44 lbs
199 g / 1.9 N
 N/A
1 mm 0.97 kg / 2.15 lbs
5 027 Gs
0.15 kg / 0.32 lbs
146 g / 1.4 N
 0.88 kg / 1.93 lbs
~0 Gs
2 mm 0.64 kg / 1.41 lbs
4 071 Gs
0.10 kg / 0.21 lbs
96 g / 0.9 N
 0.57 kg / 1.27 lbs
~0 Gs
3 mm 0.39 kg / 0.86 lbs
3 188 Gs
0.06 kg / 0.13 lbs
59 g / 0.6 N
 0.35 kg / 0.78 lbs
~0 Gs
5 mm 0.14 kg / 0.30 lbs
1 886 Gs
0.02 kg / 0.05 lbs
21 g / 0.2 N
 0.12 kg / 0.27 lbs
~0 Gs
10 mm 0.01 kg / 0.03 lbs
569 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.02 lbs
~0 Gs
20 mm 0.00 kg / 0.00 lbs
108 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
9 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
5 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
3 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
2 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
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 setup. The connection of two magnets produces a massive flux and a wider radius of operation. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the impact force is massive. The repulsion force is marginally weaker than the connection force, but still significant.
*The magnetic induction between like poles is approximately ~0 Gs in the exact middle of the gap (resulting from vector opposition).
Attention: Figures demonstrate shear force of two same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - 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
Mechanical watch 20 Gs (2.0 mT) 1.5 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
Powerful magnet radiation poses a large risk to electronic devices and pacemakers. These NdFeB products produce a field that disrupts operation of digital equipment. Remember: the invisible magnetic field acts through matter and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
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
NdFeB products are prone to chipping – a violent impact against metal can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Striking energy can cause material chips or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when handling with powerful specimens.

Table 9: Corrosion resistance
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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

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)
Total magnetic flux passing through the magnet pole. Essential parameter for generator designers as well as sensors. Pc value determines the working geometry.

Table 11: Underwater work (magnet fishing)
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.
1. Shear force

*Warning: On a vertical surface, the magnet retains just approx. 20-30% of its max power.

2. Plate thickness effect

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

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.36

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 and environmental data
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
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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 5x5x1.5 mm and a weight of 0.28 g, guarantees premium class connection. This rectangular block with a force of 5.68 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 0.58 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind 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. 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. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
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. 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 impressive energy density. It is a magnetic block with dimensions 5x5x1.5 mm and a self-weight of 0.28 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Strengths

Besides their immense strength, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
  • Magnets very well protect themselves against loss of magnetization caused by foreign field sources,
  • Thanks to the glossy finish, the layer of Ni-Cu-Ni, gold, or silver-plated gives an modern appearance,
  • The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of individual forming as well as adapting to concrete needs,
  • Wide application in innovative solutions – they are utilized in hard drives, brushless drives, advanced medical instruments, and other advanced devices.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets: tips and applications.
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their 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.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complex shapes in magnets, we propose using a housing - magnetic mechanism.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

The declared magnet strength concerns the peak performance, recorded under optimal environment, meaning:
  • on a base made of mild steel, perfectly concentrating the magnetic field
  • with a thickness minimum 10 mm
  • with a plane cleaned and smooth
  • under conditions of no distance (metal-to-metal)
  • during detachment in a direction vertical to the mounting surface
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

Real force is influenced by working environment parameters, mainly (from most important):
  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Plate material – mild steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Warnings
Immense force

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Safe distance

Very strong magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Avoid contact if allergic

Some people suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in an allergic reaction. We recommend use protective gloves.

Medical implants

Patients with a ICD have to keep an large gap from magnets. The magnetism can stop the operation of the life-saving device.

Heat warning

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

Dust is flammable

Powder produced during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Material brittleness

Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Precision electronics

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

Crushing risk

Big blocks can crush fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.

Keep away from children

Absolutely keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are very dangerous.

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