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MPL 20x10x1 / N38 - lamellar magnet

lamellar magnet

Catalog no 020126

GTIN/EAN: 5906301811329

5.00

length

20 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

1.5 g

Magnetization Direction

↑ axial

Load capacity

0.56 kg / 5.46 N

Magnetic Induction

87.15 mT / 871 Gs

Coating

[NiCuNi] Nickel

0.996 with VAT / pcs + price for transport

0.810 ZŁ net + 23% VAT / pcs

bulk discounts:

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Technical details - MPL 20x10x1 / N38 - lamellar magnet

Specification / characteristics - MPL 20x10x1 / N38 - lamellar magnet

properties
properties values
Cat. no. 020126
GTIN/EAN 5906301811329
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 1 mm [±0,1 mm]
Weight 1.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.56 kg / 5.46 N
Magnetic Induction ~ ? 87.15 mT / 871 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x10x1 / 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 - data

The following information are the direct effect of a engineering simulation. Results are based on algorithms for the material Nd2Fe14B. Real-world performance may differ. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MPL 20x10x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 871 Gs
87.1 mT
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
weak grip
1 mm 811 Gs
81.1 mT
0.49 kg / 1.07 pounds
485.7 g / 4.8 N
weak grip
2 mm 713 Gs
71.3 mT
0.37 kg / 0.83 pounds
374.9 g / 3.7 N
weak grip
3 mm 603 Gs
60.3 mT
0.27 kg / 0.59 pounds
267.9 g / 2.6 N
weak grip
5 mm 409 Gs
40.9 mT
0.12 kg / 0.27 pounds
123.4 g / 1.2 N
weak grip
10 mm 157 Gs
15.7 mT
0.02 kg / 0.04 pounds
18.1 g / 0.2 N
weak grip
15 mm 69 Gs
6.9 mT
0.00 kg / 0.01 pounds
3.5 g / 0.0 N
weak grip
20 mm 35 Gs
3.5 mT
0.00 kg / 0.00 pounds
0.9 g / 0.0 N
weak grip
30 mm 12 Gs
1.2 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Vertical force (wall)
MPL 20x10x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.11 kg / 0.25 pounds
112.0 g / 1.1 N
1 mm Stal (~0.2) 0.10 kg / 0.22 pounds
98.0 g / 1.0 N
2 mm Stal (~0.2) 0.07 kg / 0.16 pounds
74.0 g / 0.7 N
3 mm Stal (~0.2) 0.05 kg / 0.12 pounds
54.0 g / 0.5 N
5 mm Stal (~0.2) 0.02 kg / 0.05 pounds
24.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 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 (shearing) - vertical pull
MPL 20x10x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.17 kg / 0.37 pounds
168.0 g / 1.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.11 kg / 0.25 pounds
112.0 g / 1.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.28 kg / 0.62 pounds
280.0 g / 2.7 N

Table 4: Material efficiency (substrate influence) - power losses
MPL 20x10x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
1 mm
25%
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
2 mm
50%
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
3 mm
75%
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
5 mm
100%
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
10 mm
100%
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
11 mm
100%
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
12 mm
100%
0.56 kg / 1.23 pounds
560.0 g / 5.5 N

Table 5: Working in heat (stability) - thermal limit
MPL 20x10x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.56 kg / 1.23 pounds
560.0 g / 5.5 N
OK
40 °C -2.2% 0.55 kg / 1.21 pounds
547.7 g / 5.4 N
OK
60 °C -4.4% 0.54 kg / 1.18 pounds
535.4 g / 5.3 N
80 °C -6.6% 0.52 kg / 1.15 pounds
523.0 g / 5.1 N
100 °C -28.8% 0.40 kg / 0.88 pounds
398.7 g / 3.9 N

Table 6: Two magnets (repulsion) - field range
MPL 20x10x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.94 kg / 2.06 pounds
1 682 Gs
0.14 kg / 0.31 pounds
140 g / 1.4 N
N/A
1 mm 0.89 kg / 1.96 pounds
1 696 Gs
0.13 kg / 0.29 pounds
133 g / 1.3 N
0.80 kg / 1.76 pounds
~0 Gs
2 mm 0.81 kg / 1.79 pounds
1 623 Gs
0.12 kg / 0.27 pounds
122 g / 1.2 N
0.73 kg / 1.61 pounds
~0 Gs
3 mm 0.72 kg / 1.59 pounds
1 530 Gs
0.11 kg / 0.24 pounds
108 g / 1.1 N
0.65 kg / 1.43 pounds
~0 Gs
5 mm 0.53 kg / 1.18 pounds
1 316 Gs
0.08 kg / 0.18 pounds
80 g / 0.8 N
0.48 kg / 1.06 pounds
~0 Gs
10 mm 0.21 kg / 0.45 pounds
818 Gs
0.03 kg / 0.07 pounds
31 g / 0.3 N
0.19 kg / 0.41 pounds
~0 Gs
20 mm 0.03 kg / 0.07 pounds
313 Gs
0.00 kg / 0.01 pounds
5 g / 0.0 N
0.03 kg / 0.06 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
40 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
25 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
16 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
11 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
8 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
6 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - warnings
MPL 20x10x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Remote 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Impact energy (cracking risk) - collision effects
MPL 20x10x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 19.88 km/h
(5.52 m/s)
0.02 J
30 mm 33.76 km/h
(9.38 m/s)
0.07 J
50 mm 43.57 km/h
(12.10 m/s)
0.11 J
100 mm 61.62 km/h
(17.12 m/s)
0.22 J

Table 9: Anti-corrosion coating durability
MPL 20x10x1 / 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 20x10x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 173 Mx 21.7 µWb
Pc Coefficient 0.10 Low (Flat)

Table 11: Physics of underwater searching
MPL 20x10x1 / N38

Environment Effective steel pull Effect
Air (land) 0.56 kg Standard
Water (riverbed) 0.64 kg
(+0.08 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Sliding resistance

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

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) drastically limits the holding force.

3. Thermal stability

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.10

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
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: 020126-2026
Quick Unit Converter
Pulling force

Field Strength

Other offers

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 20x10x1 mm and a weight of 1.5 g, guarantees the highest quality connection. As a block magnet with high power (approx. 0.56 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.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 20x10x1 / 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 20x10x1 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as invisible mounts 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. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to clean and degrease 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.
The presented product is a neodymium magnet with precisely defined parameters: 20 mm (length), 10 mm (width), and 1 mm (thickness). It is a magnetic block with dimensions 20x10x1 mm and a self-weight of 1.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They do not lose magnetism, even after approximately ten years – the drop in strength is only ~1% (based on measurements),
  • They have excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
  • In other words, due to the smooth finish of silver, the element looks attractive,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • In view of the potential of free molding and customization to specialized needs, magnetic components can be created in a broad palette of geometric configurations, which makes them more universal,
  • Huge importance in modern industrial fields – they are used in magnetic memories, electric motors, diagnostic systems, also technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

Cons of neodymium magnets and ways of using them
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in creating nuts and complicated forms in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets are able to complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Breakaway force is the result of a measurement for the most favorable conditions, assuming:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • possessing a massiveness of at least 10 mm to avoid saturation
  • characterized by even structure
  • under conditions of no distance (surface-to-surface)
  • under axial application of breakaway force (90-degree angle)
  • in stable room temperature

What influences lifting capacity in practice

Holding efficiency impacted by working environment parameters, mainly (from most important):
  • Gap (betwixt the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Material type – the best choice is high-permeability steel. Stainless steels may attract less.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Adults only

Always store magnets away from children. Ingestion danger is high, and the effects of magnets connecting inside the body are fatal.

Avoid contact if allergic

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease working with magnets and wear gloves.

Demagnetization risk

Avoid heat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).

Magnet fragility

Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Electronic hazard

Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

GPS and phone interference

A powerful magnetic field disrupts the operation of magnetometers in phones and navigation systems. Maintain magnets close to a device to prevent damaging the sensors.

Fire warning

Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Physical harm

Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!

Do not underestimate power

Be careful. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can react.

ICD Warning

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Important! Need more info? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98