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MPL 5x5x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020173

GTIN/EAN: 5906301811794

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.38 g

Magnetization Direction

↑ axial

Load capacity

0.77 kg / 7.57 N

Magnetic Induction

360.52 mT / 3605 Gs

Coating

[NiCuNi] Nickel

0.308 with VAT / pcs + price for transport

0.250 ZŁ net + 23% VAT / pcs

bulk discounts:

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Product card - MPL 5x5x2 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020173
GTIN/EAN 5906301811794
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 2 mm [±0,1 mm]
Weight 0.38 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.77 kg / 7.57 N
Magnetic Induction ~ ? 360.52 mT / 3605 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x2 / 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

Physical simulation of the product - data

The following data constitute the result of a engineering calculation. Values were calculated on models for the material Nd2Fe14B. Operational parameters may differ from theoretical values. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MPL 5x5x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3601 Gs
360.1 mT
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
weak grip
1 mm 2436 Gs
243.6 mT
0.35 kg / 0.78 LBS
352.2 g / 3.5 N
weak grip
2 mm 1464 Gs
146.4 mT
0.13 kg / 0.28 LBS
127.3 g / 1.2 N
weak grip
3 mm 872 Gs
87.2 mT
0.05 kg / 0.10 LBS
45.1 g / 0.4 N
weak grip
5 mm 347 Gs
34.7 mT
0.01 kg / 0.02 LBS
7.2 g / 0.1 N
weak grip
10 mm 68 Gs
6.8 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
weak grip
15 mm 23 Gs
2.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
20 mm 10 Gs
1.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Sliding hold (vertical surface)
MPL 5x5x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.15 kg / 0.34 LBS
154.0 g / 1.5 N
1 mm Stal (~0.2) 0.07 kg / 0.15 LBS
70.0 g / 0.7 N
2 mm Stal (~0.2) 0.03 kg / 0.06 LBS
26.0 g / 0.3 N
3 mm Stal (~0.2) 0.01 kg / 0.02 LBS
10.0 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

Table 3: Wall mounting (shearing) - vertical pull
MPL 5x5x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.23 kg / 0.51 LBS
231.0 g / 2.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.15 kg / 0.34 LBS
154.0 g / 1.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.08 kg / 0.17 LBS
77.0 g / 0.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.39 kg / 0.85 LBS
385.0 g / 3.8 N

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 5x5x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.08 kg / 0.17 LBS
77.0 g / 0.8 N
1 mm
25%
0.19 kg / 0.42 LBS
192.5 g / 1.9 N
2 mm
50%
0.39 kg / 0.85 LBS
385.0 g / 3.8 N
3 mm
75%
0.58 kg / 1.27 LBS
577.5 g / 5.7 N
5 mm
100%
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
10 mm
100%
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
11 mm
100%
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
12 mm
100%
0.77 kg / 1.70 LBS
770.0 g / 7.6 N

Table 5: Working in heat (material behavior) - resistance threshold
MPL 5x5x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.77 kg / 1.70 LBS
770.0 g / 7.6 N
OK
40 °C -2.2% 0.75 kg / 1.66 LBS
753.1 g / 7.4 N
OK
60 °C -4.4% 0.74 kg / 1.62 LBS
736.1 g / 7.2 N
80 °C -6.6% 0.72 kg / 1.59 LBS
719.2 g / 7.1 N
100 °C -28.8% 0.55 kg / 1.21 LBS
548.2 g / 5.4 N

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 5x5x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.00 kg / 4.41 LBS
5 058 Gs
0.30 kg / 0.66 LBS
300 g / 2.9 N
N/A
1 mm 1.42 kg / 3.13 LBS
6 070 Gs
0.21 kg / 0.47 LBS
213 g / 2.1 N
1.28 kg / 2.82 LBS
~0 Gs
2 mm 0.91 kg / 2.02 LBS
4 871 Gs
0.14 kg / 0.30 LBS
137 g / 1.3 N
0.82 kg / 1.81 LBS
~0 Gs
3 mm 0.56 kg / 1.23 LBS
3 801 Gs
0.08 kg / 0.18 LBS
83 g / 0.8 N
0.50 kg / 1.10 LBS
~0 Gs
5 mm 0.20 kg / 0.43 LBS
2 254 Gs
0.03 kg / 0.06 LBS
29 g / 0.3 N
0.18 kg / 0.39 LBS
~0 Gs
10 mm 0.02 kg / 0.04 LBS
695 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.04 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
136 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
11 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
7 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
4 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
1 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Protective zones (electronics) - precautionary measures
MPL 5x5x2 / 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

Table 8: Collisions (kinetic energy) - warning
MPL 5x5x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 45.41 km/h
(12.61 m/s)
0.03 J
30 mm 78.63 km/h
(21.84 m/s)
0.09 J
50 mm 101.51 km/h
(28.20 m/s)
0.15 J
100 mm 143.56 km/h
(39.88 m/s)
0.30 J

Table 9: Coating parameters (durability)
MPL 5x5x2 / 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 5x5x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 940 Mx 9.4 µWb
Pc Coefficient 0.46 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 5x5x2 / N38

Environment Effective steel pull Effect
Air (land) 0.77 kg Standard
Water (riverbed) 0.88 kg
(+0.11 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Vertical hold

*Warning: On a vertical surface, the magnet holds merely ~20% of its max power.

2. Steel thickness impact

*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces 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) = 0.46

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: 020173-2026
Magnet Unit Converter
Pulling force

Field Strength

Other proposals

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 5x5x2 mm and a weight of 0.38 g, guarantees the highest quality connection. As a block magnet with high power (approx. 0.77 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.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 5x5x2 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. 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. 0.77 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.
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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 5x5x2 / N38 model is magnetized axially (dimension 2 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (5x5 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 5x5x2 mm, which, at a weight of 0.38 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 5x5x2 mm and a self-weight of 0.38 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They do not lose strength, even during nearly ten years – the reduction in lifting capacity is only ~1% (theoretically),
  • Magnets perfectly resist against loss of magnetization caused by ambient magnetic noise,
  • Thanks to the elegant finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an modern appearance,
  • The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in constructing and the ability to adapt to complex applications,
  • Fundamental importance in future technologies – they are utilized in HDD drives, electric drive systems, advanced medical instruments, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Disadvantages

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We recommend a housing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is relatively high,

Pull force analysis

Magnetic strength at its maximum – what affects it?

The lifting capacity listed is a result of laboratory testing conducted under standard conditions:
  • using a base made of mild steel, functioning as a circuit closing element
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with a plane free of scratches
  • with zero gap (without impurities)
  • during pulling in a direction perpendicular to the plane
  • in stable room temperature

What influences lifting capacity in practice

Bear in mind that the working load will differ subject to the following factors, starting with the most relevant:
  • Gap (betwixt the magnet and the metal), since even a very small distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Angle of force application – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Material composition – different alloys reacts the same. Alloy additives weaken the attraction effect.
  • Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.

H&S for magnets
Heat warning

Keep cool. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Threat to electronics

Data protection: Strong magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Health Danger

Warning for patients: Strong magnetic fields disrupt medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Crushing force

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Metal Allergy

It is widely known that nickel (standard magnet coating) is a common allergen. For allergy sufferers, refrain from direct skin contact or select coated magnets.

Choking Hazard

These products are not suitable for play. Swallowing multiple magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Flammability

Machining of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Caution required

Handle magnets consciously. Their immense force can shock even experienced users. Be vigilant and do not underestimate their force.

Eye protection

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Compass and GPS

An intense magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a device to prevent damaging the sensors.

Caution! Details about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98