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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

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Technical - 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

Physical modeling of the product - report

The following data are the result of a engineering simulation. Results are based on algorithms for the material Nd2Fe14B. Operational parameters may differ from theoretical values. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - power drop
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 LBS
560.0 g / 5.5 N
safe
1 mm 811 Gs
81.1 mT
0.49 kg / 1.07 LBS
485.7 g / 4.8 N
safe
2 mm 713 Gs
71.3 mT
0.37 kg / 0.83 LBS
374.9 g / 3.7 N
safe
3 mm 603 Gs
60.3 mT
0.27 kg / 0.59 LBS
267.9 g / 2.6 N
safe
5 mm 409 Gs
40.9 mT
0.12 kg / 0.27 LBS
123.4 g / 1.2 N
safe
10 mm 157 Gs
15.7 mT
0.02 kg / 0.04 LBS
18.1 g / 0.2 N
safe
15 mm 69 Gs
6.9 mT
0.00 kg / 0.01 LBS
3.5 g / 0.0 N
safe
20 mm 35 Gs
3.5 mT
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
safe
30 mm 12 Gs
1.2 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Vertical hold (vertical surface)
MPL 20x10x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.11 kg / 0.25 LBS
112.0 g / 1.1 N
1 mm Stal (~0.2) 0.10 kg / 0.22 LBS
98.0 g / 1.0 N
2 mm Stal (~0.2) 0.07 kg / 0.16 LBS
74.0 g / 0.7 N
3 mm Stal (~0.2) 0.05 kg / 0.12 LBS
54.0 g / 0.5 N
5 mm Stal (~0.2) 0.02 kg / 0.05 LBS
24.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 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: Vertical assembly (sliding) - behavior on slippery surfaces
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 LBS
168.0 g / 1.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.11 kg / 0.25 LBS
112.0 g / 1.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.06 kg / 0.12 LBS
56.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.28 kg / 0.62 LBS
280.0 g / 2.7 N

Table 4: Steel thickness (saturation) - 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 LBS
56.0 g / 0.5 N
1 mm
25%
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
2 mm
50%
0.28 kg / 0.62 LBS
280.0 g / 2.7 N
3 mm
75%
0.42 kg / 0.93 LBS
420.0 g / 4.1 N
5 mm
100%
0.56 kg / 1.23 LBS
560.0 g / 5.5 N
10 mm
100%
0.56 kg / 1.23 LBS
560.0 g / 5.5 N
11 mm
100%
0.56 kg / 1.23 LBS
560.0 g / 5.5 N
12 mm
100%
0.56 kg / 1.23 LBS
560.0 g / 5.5 N

Table 5: Thermal resistance (material behavior) - power drop
MPL 20x10x1 / N38

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

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

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.94 kg / 2.06 LBS
1 682 Gs
0.14 kg / 0.31 LBS
140 g / 1.4 N
N/A
1 mm 0.89 kg / 1.96 LBS
1 696 Gs
0.13 kg / 0.29 LBS
133 g / 1.3 N
0.80 kg / 1.76 LBS
~0 Gs
2 mm 0.81 kg / 1.79 LBS
1 623 Gs
0.12 kg / 0.27 LBS
122 g / 1.2 N
0.73 kg / 1.61 LBS
~0 Gs
3 mm 0.72 kg / 1.59 LBS
1 530 Gs
0.11 kg / 0.24 LBS
108 g / 1.1 N
0.65 kg / 1.43 LBS
~0 Gs
5 mm 0.53 kg / 1.18 LBS
1 316 Gs
0.08 kg / 0.18 LBS
80 g / 0.8 N
0.48 kg / 1.06 LBS
~0 Gs
10 mm 0.21 kg / 0.45 LBS
818 Gs
0.03 kg / 0.07 LBS
31 g / 0.3 N
0.19 kg / 0.41 LBS
~0 Gs
20 mm 0.03 kg / 0.07 LBS
313 Gs
0.00 kg / 0.01 LBS
5 g / 0.0 N
0.03 kg / 0.06 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
40 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
25 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
16 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
11 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
8 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
6 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 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
Timepiece 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 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: Collisions (cracking risk) - warning
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: Construction 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%
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. Shear force

*Caution: On a vertical wall, the magnet holds merely approx. 20-30% of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) drastically 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) = 0.10

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
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: 020126-2026
Quick Unit Converter
Force (pull)

Magnetic Field

Other proposals

Model MPL 20x10x1 / N38 features a flat shape and industrial pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 5.46 N is ready for shipment in 24h, allowing for rapid realization of your project. 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 20x10x1 / 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. 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 wind generators and material handling systems. Thanks to the flat surface and high force (approx. 0.56 kg), they are ideal as closers 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.
For mounting flat magnets MPL 20x10x1 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 20x10x1 / N38 model is magnetized through the thickness (dimension 1 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.
This model is characterized by dimensions 20x10x1 mm, which, at a weight of 1.5 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 0.56 kg (force ~5.46 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
  • Neodymium magnets are characterized by remarkably resistant to loss of magnetic properties caused by magnetic disturbances,
  • A magnet with a metallic nickel surface is more attractive,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of individual shaping and optimizing to individual applications,
  • Universal use in future technologies – they find application in mass storage devices, electric motors, medical equipment, as well as technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Cons of neodymium magnets: tips and applications.
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
  • Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Holding force of 0.56 kg is a result of laboratory testing conducted under specific, ideal conditions:
  • using a base made of high-permeability steel, serving as a circuit closing element
  • possessing a massiveness of min. 10 mm to avoid saturation
  • with a plane cleaned and smooth
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at temperature room level

Impact of factors on magnetic holding capacity in practice

Bear in mind that the working load may be lower subject to elements below, starting with the most relevant:
  • Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Base massiveness – too thin steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with NdFeB magnets
Phone sensors

A powerful magnetic field disrupts the operation of compasses in phones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.

Fire warning

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

Choking Hazard

NdFeB magnets are not intended for children. Eating multiple magnets may result in them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

Cards and drives

Do not bring magnets near a purse, computer, or screen. The magnetism can permanently damage these devices and erase data from cards.

Health Danger

For implant holders: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Operating temperature

Do not overheat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Warning for allergy sufferers

A percentage of the population experience a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Extended handling can result in skin redness. We strongly advise wear protective gloves.

Conscious usage

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

Serious injuries

Mind your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Material brittleness

Watch out for shards. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Important! Looking for details? Check our post: Why are neodymium magnets dangerous?