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MPL 20x10x1 / N38 - lamellar magnet

lamellar magnet

Catalog no 020126

GTIN/EAN: 5906301811329

5.00
Load capacity 0.56 kg / 5.46 N Magnetic Induction 87.15 mT / 871 Gs
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
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

0.810net / pcs

0.996 zł with VAT (23% VAT) / pcs

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Gross
price from 1 pcs
0.810 zł
0.996 zł
price from 800 pcs
0.761 zł
0.937 zł
price from 3100 pcs
0.713 zł
0.877 zł

Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical data of the product - 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
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 analysis of the assembly - data

Presented information are the result of a physical simulation. Values are based on models for the class Nd2Fe14B. Real-world performance might slightly deviate from the simulation results. Please consider these data as a reference point when designing systems.

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

Table 2: Vertical hold (wall)
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 (substrate influence) - sheet metal selection
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: Working in heat (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) - forces in the system
MPL 20x10x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear 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
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: Collisions (kinetic energy) - collision effects
MPL 20x10x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.22 km/h
(5.06 m/s)
0.02 J
30 mm 18.47 km/h
(5.13 m/s)
0.02 J
50 mm 18.41 km/h
(5.11 m/s)
0.02 J
100 mm 18.49 km/h
(5.14 m/s)
0.02 J

Table 9: Corrosion resistance
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 (Pc)
MPL 20x10x1 / N38

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

Table 11: Hydrostatics and buoyancy
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

1. Shear force

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

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) significantly limits 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) = 0.10

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 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%

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: 020126-2026
Quick Unit Converter

Magnet pull force


Magnetic Induction

Other deals

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. This rectangular block with a force of 5.46 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.
The key to success is sliding 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. Watch your fingers! Magnets with a force of 0.56 kg can pinch very hard and cause hematomas. 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 filters catching filings and linear motors. 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.
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 roughen and wash 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. 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.
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.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
  • They feature excellent resistance to magnetism drop due to opposing magnetic fields,
  • By covering with a shiny layer of nickel, the element gains an nice look,
  • Magnets have exceptionally strong magnetic induction on the active area,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to freedom in constructing and the capacity to customize to specific needs,
  • Huge importance in innovative solutions – they serve a role in hard drives, electromotive mechanisms, medical equipment, and technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals
  • At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of creating nuts in the magnet and complex forms - preferred is cover - magnet mounting.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets are able to be problematic in diagnostics medical in case of swallowing.
  • With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

The declared magnet strength refers to the limit force, obtained under laboratory conditions, specifically:
  • on a base made of mild steel, effectively closing the magnetic field
  • whose thickness equals approx. 10 mm
  • with an ideally smooth touching surface
  • under conditions of ideal adhesion (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • at standard ambient temperature

Lifting capacity in practice – influencing factors

Please note that the working load will differ influenced by the following factors, in order of importance:
  • Clearance – the presence of foreign body (paint, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
  • Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

H&S for magnets
This is not a toy

Neodymium magnets are not intended for children. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.

Operating temperature

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and pulling force.

Threat to navigation

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Pinching danger

Danger of trauma: The pulling power is so great that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.

Do not drill into magnets

Powder generated during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Protect data

Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Safe operation

Be careful. Neodymium magnets attract from a long distance and connect with huge force, often faster than you can move away.

Warning for allergy sufferers

Some people have a sensitization to nickel, which is the common plating for neodymium magnets. Prolonged contact may cause skin redness. We recommend use safety gloves.

ICD Warning

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Eye protection

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Warning! Want to know more? Read our article: Are neodymium magnets dangerous?