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MPL 20x10x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020127

GTIN/EAN: 5906301811336

5.00

length

20 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

3 g

Magnetization Direction

↑ axial

Load capacity

1.88 kg / 18.44 N

Magnetic Induction

168.24 mT / 1682 Gs

Coating

[NiCuNi] Nickel

1.538 with VAT / pcs + price for transport

1.250 ZŁ net + 23% VAT / pcs

bulk discounts:

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Product card - MPL 20x10x2 / N38 - lamellar magnet

Specification / characteristics - MPL 20x10x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020127
GTIN/EAN 5906301811336
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 20 mm [±0,1 mm]
Width 10 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 3 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.88 kg / 18.44 N
Magnetic Induction ~ ? 168.24 mT / 1682 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x10x2 / 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 product - technical parameters

Presented data constitute the direct effect of a physical calculation. Values are based on models for the material Nd2Fe14B. Actual performance may differ. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 20x10x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1682 Gs
168.2 mT
1.88 kg / 4.14 LBS
1880.0 g / 18.4 N
weak grip
1 mm 1524 Gs
152.4 mT
1.54 kg / 3.40 LBS
1544.3 g / 15.1 N
weak grip
2 mm 1316 Gs
131.6 mT
1.15 kg / 2.54 LBS
1150.1 g / 11.3 N
weak grip
3 mm 1101 Gs
110.1 mT
0.81 kg / 1.78 LBS
806.0 g / 7.9 N
weak grip
5 mm 744 Gs
74.4 mT
0.37 kg / 0.81 LBS
367.6 g / 3.6 N
weak grip
10 mm 288 Gs
28.8 mT
0.06 kg / 0.12 LBS
55.1 g / 0.5 N
weak grip
15 mm 129 Gs
12.9 mT
0.01 kg / 0.02 LBS
11.1 g / 0.1 N
weak grip
20 mm 66 Gs
6.6 mT
0.00 kg / 0.01 LBS
2.9 g / 0.0 N
weak grip
30 mm 23 Gs
2.3 mT
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
weak grip
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Vertical load (vertical surface)
MPL 20x10x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.38 kg / 0.83 LBS
376.0 g / 3.7 N
1 mm Stal (~0.2) 0.31 kg / 0.68 LBS
308.0 g / 3.0 N
2 mm Stal (~0.2) 0.23 kg / 0.51 LBS
230.0 g / 2.3 N
3 mm Stal (~0.2) 0.16 kg / 0.36 LBS
162.0 g / 1.6 N
5 mm Stal (~0.2) 0.07 kg / 0.16 LBS
74.0 g / 0.7 N
10 mm Stal (~0.2) 0.01 kg / 0.03 LBS
12.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 (sliding) - behavior on slippery surfaces
MPL 20x10x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.56 kg / 1.24 LBS
564.0 g / 5.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.38 kg / 0.83 LBS
376.0 g / 3.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.19 kg / 0.41 LBS
188.0 g / 1.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.94 kg / 2.07 LBS
940.0 g / 9.2 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 20x10x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.19 kg / 0.41 LBS
188.0 g / 1.8 N
1 mm
25%
0.47 kg / 1.04 LBS
470.0 g / 4.6 N
2 mm
50%
0.94 kg / 2.07 LBS
940.0 g / 9.2 N
3 mm
75%
1.41 kg / 3.11 LBS
1410.0 g / 13.8 N
5 mm
100%
1.88 kg / 4.14 LBS
1880.0 g / 18.4 N
10 mm
100%
1.88 kg / 4.14 LBS
1880.0 g / 18.4 N
11 mm
100%
1.88 kg / 4.14 LBS
1880.0 g / 18.4 N
12 mm
100%
1.88 kg / 4.14 LBS
1880.0 g / 18.4 N

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 20x10x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.88 kg / 4.14 LBS
1880.0 g / 18.4 N
OK
40 °C -2.2% 1.84 kg / 4.05 LBS
1838.6 g / 18.0 N
OK
60 °C -4.4% 1.80 kg / 3.96 LBS
1797.3 g / 17.6 N
80 °C -6.6% 1.76 kg / 3.87 LBS
1755.9 g / 17.2 N
100 °C -28.8% 1.34 kg / 2.95 LBS
1338.6 g / 13.1 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 20x10x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.49 kg / 7.69 LBS
2 995 Gs
0.52 kg / 1.15 LBS
523 g / 5.1 N
N/A
1 mm 3.21 kg / 7.08 LBS
3 227 Gs
0.48 kg / 1.06 LBS
481 g / 4.7 N
2.89 kg / 6.37 LBS
~0 Gs
2 mm 2.87 kg / 6.32 LBS
3 049 Gs
0.43 kg / 0.95 LBS
430 g / 4.2 N
2.58 kg / 5.69 LBS
~0 Gs
3 mm 2.50 kg / 5.51 LBS
2 846 Gs
0.37 kg / 0.83 LBS
375 g / 3.7 N
2.25 kg / 4.95 LBS
~0 Gs
5 mm 1.80 kg / 3.96 LBS
2 414 Gs
0.27 kg / 0.59 LBS
269 g / 2.6 N
1.62 kg / 3.56 LBS
~0 Gs
10 mm 0.68 kg / 1.50 LBS
1 487 Gs
0.10 kg / 0.23 LBS
102 g / 1.0 N
0.61 kg / 1.35 LBS
~0 Gs
20 mm 0.10 kg / 0.23 LBS
576 Gs
0.02 kg / 0.03 LBS
15 g / 0.2 N
0.09 kg / 0.20 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
76 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
47 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
31 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
21 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
15 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
11 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) - warnings
MPL 20x10x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (cracking risk) - collision effects
MPL 20x10x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.70 km/h
(7.14 m/s)
0.08 J
30 mm 43.73 km/h
(12.15 m/s)
0.22 J
50 mm 56.45 km/h
(15.68 m/s)
0.37 J
100 mm 79.84 km/h
(22.18 m/s)
0.74 J

Table 9: Surface protection spec
MPL 20x10x2 / 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 (Flux)
MPL 20x10x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 825 Mx 38.2 µWb
Pc Coefficient 0.19 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 20x10x2 / N38

Environment Effective steel pull Effect
Air (land) 1.88 kg Standard
Water (riverbed) 2.15 kg
(+0.27 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Vertical hold

*Caution: On a vertical wall, the magnet holds only a fraction of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Heat tolerance

*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) = 0.19

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
Elemental analysis
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: 020127-2026
Measurement Calculator
Magnet pull force

Field Strength

View more proposals

Component MPL 20x10x2 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 1.88 kg), this product is available off-the-shelf from our warehouse in Poland. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is shifting 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. To separate the MPL 20x10x2 / 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 generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 20x10x2 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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.
Standardly, the MPL 20x10x2 / N38 model is magnetized through the thickness (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 (20x10 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 20x10x2 mm, which, at a weight of 3 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 1.88 kg (force ~18.44 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:
  • They retain full power for nearly ten years – the drop is just ~1% (based on simulations),
  • Magnets effectively defend themselves against demagnetization caused by external fields,
  • By covering with a reflective coating of gold, the element has an proper look,
  • Magnetic induction on the working part of the magnet turns out to be maximum,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
  • Thanks to the ability of accurate shaping and adaptation to unique needs, neodymium magnets can be modeled in a broad palette of shapes and sizes, which makes them more universal,
  • Huge importance in advanced technology sectors – they are used in hard drives, electric drive systems, medical devices, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices

Limitations

Problematic aspects of neodymium magnets: application proposals
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium 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 extremely resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complex forms.
  • Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Highest magnetic holding forcewhat affects it?

Breakaway force is the result of a measurement for the most favorable conditions, taking into account:
  • on a plate made of mild steel, perfectly concentrating the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • with a surface cleaned and smooth
  • with direct contact (no coatings)
  • for force applied at a right angle (pull-off, not shear)
  • at standard ambient temperature

Determinants of practical lifting force of a magnet

Bear in mind that the working load may be lower depending on elements below, in order of importance:
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin plate does not accept the full field, causing part of the flux to be lost to the other side.
  • Steel grade – ideal substrate is pure iron steel. Cast iron may attract less.
  • Surface condition – ground elements ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. In addition, even a small distance between the magnet and the plate reduces the load capacity.

H&S for magnets
Threat to electronics

Avoid bringing magnets close to a purse, laptop, or TV. The magnetism can destroy these devices and wipe information from cards.

Crushing force

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

Shattering risk

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

Powerful field

Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Implant safety

People with a pacemaker must keep an absolute distance from magnets. The magnetic field can disrupt the operation of the implant.

Heat warning

Watch the temperature. Exposing the magnet to high heat will ruin its properties and strength.

Flammability

Fire hazard: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

Warning for allergy sufferers

Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for coated magnets.

Keep away from children

These products are not toys. Eating a few magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires immediate surgery.

GPS Danger

Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Caution! Need more info? Read our article: Why are neodymium magnets dangerous?