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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

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Technical details - 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 magnet - technical parameters

These values constitute the outcome of a physical calculation. Results were calculated on algorithms for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - power drop
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
safe
1 mm 2036 Gs
203.6 mT
0.28 kg / 0.62 pounds
279.6 g / 2.7 N
safe
2 mm 1228 Gs
122.8 mT
0.10 kg / 0.22 pounds
101.7 g / 1.0 N
safe
3 mm 727 Gs
72.7 mT
0.04 kg / 0.08 pounds
35.7 g / 0.3 N
safe
5 mm 285 Gs
28.5 mT
0.01 kg / 0.01 pounds
5.5 g / 0.1 N
safe
10 mm 54 Gs
5.4 mT
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
safe
15 mm 18 Gs
1.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
20 mm 8 Gs
0.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Sliding capacity (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 (sliding) - vertical pull
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 (saturation) - 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: Thermal stability (stability) - power drop
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 (attraction) - forces in the system
MPL 5x5x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear 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) (implants) - warnings
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
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: Dynamics (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

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)

Table 10: Electrical data (Pc)
MPL 5x5x1.5 / N38

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

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.
1. Vertical hold

*Caution: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Plate thickness effect

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

3. Power loss vs temp

*For N38 grade, 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

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 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%
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: 020172-2026
Quick Unit Converter
Force (pull)

Magnetic Field

Other deals

This product is a very powerful 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 rectangular 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 protects 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. 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. 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 clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
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. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 5 mm (length), 5 mm (width), and 1.5 mm (thickness). 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 protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Apart from their superior holding force, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
  • Neodymium magnets are characterized by remarkably resistant to magnetic field loss caused by external field sources,
  • Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
  • They are known for high magnetic induction at the operating surface, which increases their power,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Considering the ability of free molding and customization to individualized needs, NdFeB magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
  • Significant place in modern technologies – they serve a role in mass storage devices, electromotive mechanisms, diagnostic systems, and technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

What to avoid - cons of neodymium magnets: application proposals
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Limited possibility of making threads in the magnet and complex forms - recommended is a housing - magnetic holder.
  • Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices are able to disrupt the diagnostic process medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Lifting parameters

Breakaway strength of the magnet in ideal conditionswhat it depends on?

The specified lifting capacity represents the limit force, obtained under optimal environment, meaning:
  • on a plate made of mild steel, optimally conducting the magnetic field
  • whose thickness reaches at least 10 mm
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Real force is influenced by specific conditions, such as (from priority):
  • Gap between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin steel causes magnetic saturation, causing part of the power to be lost to the other side.
  • Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
  • Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets
Pacemakers

Patients with a ICD should keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Threat to navigation

Note: neodymium magnets generate a field that interferes with precision electronics. Keep a separation from your phone, tablet, and navigation systems.

Allergic reactions

Medical facts indicate that nickel (the usual finish) is a common allergen. If your skin reacts to metals, prevent direct skin contact or select encased magnets.

Do not overheat magnets

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Handling rules

Handle magnets with awareness. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their force.

Protect data

Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, timepieces).

Combustion hazard

Machining of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

No play value

Neodymium magnets are not intended for children. Swallowing a few magnets may result in them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.

Beware of splinters

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

Serious injuries

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!

Safety First! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98