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MPL 4.2x2x0.6 / N52 - lamellar magnet

lamellar magnet

Catalog no 020600

GTIN/EAN: 5906301816102

Load capacity 0.20 kg / 1.96 N Magnetic Induction 275.85 mT / 2758 Gs
length
4.2 mm [±0,1 mm]
Width
2 mm [±0,1 mm]
Height
0.6 mm [±0,1 mm]
Weight
0.04 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

0.450 zł net / pcs

0.554 zł with VAT (23% VAT) / pcs

price for transport

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Gross
price from 1 pcs
0.450 zł
0.554 zł
price from 1400 pcs
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0.520 zł
price from 5600 pcs
0.396 zł
0.487 zł

Frequently asked questions

What pull rating should I choose for a workshop block magnet?
A catalogue pull rating is measured under stated test conditions. A painted or thin steel surface, a gap or a load acting along the surface can reduce the practical grip. Choose a margin based on the actual installation and read the product card.
Are block neodymium magnets available in more durable versions?
Sintered NdFeB is brittle and can corrode if its coating is damaged. Check the coating and operating-temperature limit of the selected product. A housing may help protect a magnet in an application exposed to impacts.
How should I choose block magnets for mounting a structure?
First check the steel grade and thickness, then any gap created by paint or dirt, and finally the direction of the applied load. Compare these conditions with the specifications of the selected magnet; do not rely on grade alone.

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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Physical properties - MPL 4.2x2x0.6 / N52 - lamellar magnet

Specification / characteristics - MPL 4.2x2x0.6 / N52 - lamellar magnet

properties
properties values
Cat. no. 020600
GTIN/EAN 5906301816102
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
length 4.2 mm [±0,1 mm]
Width 2 mm [±0,1 mm]
Height 0.6 mm [±0,1 mm]
Weight 0.04 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.20 kg / 1.96 N
Magnetic Induction ~ ? 275.85 mT / 2758 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N52

Specification / characteristics MPL 4.2x2x0.6 / N52 - lamellar magnet
properties values units
Remanence Br ? 14.2-14.7 kGs
Remanence Br ? 1420-1470 mT
Coercivity bHc ? 10.8-12.5 kOe
Coercivity bHc ? 860-995 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 48-53 BH max MGOe
Energy product BHmax ? 380-422 BH max KJ/m
Maximum working temperature ? ≤ 60 °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 product - technical parameters

The following data are the result of a mathematical calculation. Values rely on models for the material Nd2Fe14B. Operational conditions might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - power drop
MPL 4.2x2x0.6 / N52

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2753 Gs
275.3 mT
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
safe
1 mm 1183 Gs
118.3 mT
0.04 kg / 0.08 LBS
36.9 g / 0.4 N
safe
2 mm 470 Gs
47.0 mT
0.01 kg / 0.01 LBS
5.8 g / 0.1 N
safe
3 mm 217 Gs
21.7 mT
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
safe
5 mm 66 Gs
6.6 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
safe
10 mm 10 Gs
1.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
15 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
20 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
30 mm 0 Gs
0.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Sliding capacity (vertical surface)
MPL 4.2x2x0.6 / N52

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.04 kg / 0.09 LBS
40.0 g / 0.4 N
1 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 LBS
8.0 g / 0.1 N
2 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
3 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
5 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 4.2x2x0.6 / N52

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.06 kg / 0.13 LBS
60.0 g / 0.6 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.04 kg / 0.09 LBS
40.0 g / 0.4 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.10 kg / 0.22 LBS
100.0 g / 1.0 N

Table 4: Steel thickness (saturation) - power losses
MPL 4.2x2x0.6 / N52

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
1 mm
25%
0.05 kg / 0.11 LBS
50.0 g / 0.5 N
2 mm
50%
0.10 kg / 0.22 LBS
100.0 g / 1.0 N
3 mm
75%
0.15 kg / 0.33 LBS
150.0 g / 1.5 N
5 mm
100%
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
10 mm
100%
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
11 mm
100%
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
12 mm
100%
0.20 kg / 0.44 LBS
200.0 g / 2.0 N

Table 5: Thermal resistance (stability) - resistance threshold
MPL 4.2x2x0.6 / N52

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.20 kg / 0.44 LBS
200.0 g / 2.0 N
Estimate
40 °C -4.4% 0.19 kg / 0.42 LBS
191.3 g / 1.9 N
Estimate
60 °C -8.6% 0.18 kg / 0.40 LBS
182.8 g / 1.8 N
Material limit
80 °C — — Out of range — no model

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 4.2x2x0.6 / N52

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.39 kg / 0.87 LBS
4 485 Gs
0.06 kg / 0.13 LBS
59 g / 0.6 N
N/A
1 mm 0.19 kg / 0.42 LBS
3 837 Gs
0.03 kg / 0.06 LBS
29 g / 0.3 N
0.17 kg / 0.38 LBS
~0 Gs
2 mm 0.07 kg / 0.16 LBS
2 367 Gs
0.01 kg / 0.02 LBS
11 g / 0.1 N
0.07 kg / 0.14 LBS
~0 Gs
3 mm 0.03 kg / 0.06 LBS
1 466 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
0.03 kg / 0.06 LBS
~0 Gs
5 mm 0.01 kg / 0.01 LBS
627 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
10 mm 0.00 kg / 0.00 LBS
131 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
20 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
1 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
1 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
1 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
0 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
0 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
0 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Axial field levels — not safety zones
MPL 4.2x2x0.6 / N52

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 1.5 cm
< 10 Gs < 1.0 mT 1.5 cm
< 20 Gs < 2.0 mT 1.0 cm
< 40 Gs < 4.0 mT 1.0 cm
< 50 Gs < 5.0 mT 1.0 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm

Table 8: Collisions (cracking risk) - collision effects
MPL 4.2x2x0.6 / N52

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 28.46 km/h
(7.91 m/s)
0.00 J
30 mm 28.45 km/h
(7.90 m/s)
0.00 J
50 mm 28.39 km/h
(7.89 m/s)
0.00 J
100 mm 28.47 km/h
(7.91 m/s)
0.00 J

Table 9: Coating parameters (durability)
MPL 4.2x2x0.6 / N52

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 (Pc)
MPL 4.2x2x0.6 / N52

Parameter Value SI Unit / Description
Magnetic Flux 247 Mx 2.5 µWb
Pc Coefficient 0.27 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 4.2x2x0.6 / N52

Environment Effective steel pull Effect
Air (land) 0.20 kg Standard
Water (riverbed) 0.23 kg
(+0.03 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

*Warning: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

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

3. Temperature resistance

N52: the maximum material working temperature is 60°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.27

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. At low Pc values (typical for flat magnets, below about 1) 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

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: 020600-2026
Magnet Unit Converter

Pulling force


Magnetic Induction

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Component MPL 4.2x2x0.6 / N52 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 0.20 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 4.2x2x0.6 / N52 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.
Plate magnets MPL 4.2x2x0.6 / N52 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 0.20 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 4.2x2x0.6 / N52, we recommend utilizing 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. 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 (4.2x2 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: 4.2 mm (length), 2 mm (width), and 0.6 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 0.20 kg (force ~1.96 N), which, with such a flat shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Pros and cons of neodymium magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They do not lose power, even over around 10 years – the drop in lifting capacity is only ~1% (based on measurements),
  • Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
  • In other words, due to the shiny finish of silver, the element is aesthetically pleasing,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in constructing and the capacity to customize to complex applications,
  • Significant place in innovative solutions – they serve a role in hard drives, electric motors, diagnostic systems, and industrial machines.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • Do not exceed this material temperature limit: 60°C. Overheating may permanently weaken the magnet.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small elements of these magnets are able to complicate diagnosis medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Highest magnetic holding force – what it depends on?

The specified lifting capacity concerns the peak performance, obtained under laboratory conditions, specifically:
  • on a plate made of structural steel, optimally conducting the magnetic flux
  • with a thickness of at least 10 mm
  • with an polished touching surface
  • under conditions of no distance (metal-to-metal)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Bear in mind that the magnet holding may be lower influenced by elements below, starting with the most relevant:
  • Gap between surfaces – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Cast iron may attract less.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal environment – heating the magnet causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets
Pinching danger

Pinching hazard: The attraction force is so great that it can result in blood blisters, pinching, and even bone fractures. Use thick gloves.

Keep away from electronics

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Safe distance

Device Safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Handling rules

Use magnets with awareness. Their huge power can surprise even experienced users. Be vigilant and do not underestimate their force.

Heat warning

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Risk of cracking

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them breaking into small pieces.

Combustion hazard

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Skin irritation risks

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If redness appears, cease handling magnets and use protective gear.

Health Danger

Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Do not give to children

Only for adults. Tiny parts can be swallowed, leading to serious injuries. Keep away from children and animals.

Warning! Learn more about risks in the article: Safety of working with magnets.