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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

Physical modeling of the assembly - report

The following information constitute the result of a mathematical calculation. Values are based on models for the class Nd2Fe14B. Operational performance may deviate from the simulation results. Please consider these data as a reference point when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
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
low risk
1 mm 1524 Gs
152.4 mT
1.54 kg / 3.40 LBS
1544.3 g / 15.1 N
low risk
2 mm 1316 Gs
131.6 mT
1.15 kg / 2.54 LBS
1150.1 g / 11.3 N
low risk
3 mm 1101 Gs
110.1 mT
0.81 kg / 1.78 LBS
806.0 g / 7.9 N
low risk
5 mm 744 Gs
74.4 mT
0.37 kg / 0.81 LBS
367.6 g / 3.6 N
low risk
10 mm 288 Gs
28.8 mT
0.06 kg / 0.12 LBS
55.1 g / 0.5 N
low risk
15 mm 129 Gs
12.9 mT
0.01 kg / 0.02 LBS
11.1 g / 0.1 N
low risk
20 mm 66 Gs
6.6 mT
0.00 kg / 0.01 LBS
2.9 g / 0.0 N
low risk
30 mm 23 Gs
2.3 mT
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
low risk
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Slippage hold (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 (shearing) - vertical pull
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 stability (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 (attraction) - 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: Hazards (implants) - 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
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Mobile device 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) - warning
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: Construction 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: Physics of underwater searching
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%
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 retains only ~20% of its nominal pull.

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, the safety limit 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.

Engineering data and GPSR
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%
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: 020127-2026
Quick Unit Converter
Pulling force

Magnetic Field

Check out also offers

Component MPL 20x10x2 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. As a block magnet with high power (approx. 1.88 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
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 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. They work great as fasteners under tiles, wood, or glass. 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (20x10 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 20x10x2 mm, which, at a weight of 3 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 1.88 kg (force ~18.44 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of neodymium magnets.

Pros

Apart from their superior holding force, neodymium magnets have these key benefits:
  • Their strength is durable, and after around 10 years it decreases only by ~1% (according to research),
  • They are resistant to demagnetization induced by external field influence,
  • The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • 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...
  • Possibility of accurate forming as well as adapting to atypical applications,
  • Key role in modern technologies – they are commonly used in hard drives, motor assemblies, advanced medical instruments, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in compact constructions

Cons

Problematic aspects of neodymium magnets: application proposals
  • At 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.
  • NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as 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 when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of making nuts in the magnet and complicated forms - recommended is casing - mounting mechanism.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting capacity of the magnetwhat affects it?

The lifting capacity listed is a theoretical maximum value performed under specific, ideal conditions:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • whose transverse dimension reaches at least 10 mm
  • with a plane free of scratches
  • with total lack of distance (without coatings)
  • during pulling in a direction perpendicular to the mounting surface
  • in temp. approx. 20°C

Lifting capacity in practice – influencing factors

In practice, the actual holding force is determined by a number of factors, listed from crucial:
  • Clearance – the presence of any layer (rust, tape, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Steel thickness – insufficiently thick sheet does not close the flux, causing part of the power to be wasted into the air.
  • Steel type – low-carbon steel gives the best results. Alloy steels lower magnetic permeability and lifting capacity.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal environment – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.

Warnings
Magnetic media

Do not bring magnets close to a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Powerful field

Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Keep away from children

Neodymium magnets are not toys. Accidental ingestion of a few magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Hand protection

Risk of injury: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Nickel allergy

Studies show that nickel (standard magnet coating) is a strong allergen. If you have an allergy, refrain from touching magnets with bare hands or opt for coated magnets.

Permanent damage

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

Do not drill into magnets

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Medical interference

Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetic field can disrupt the functioning of the implant.

Material brittleness

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them breaking into small pieces.

Keep away from electronics

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Attention! Looking for details? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98