MPL 4.2x2x0.6 / N52 - lamellar magnet
lamellar magnet
Catalog no 020600
GTIN/EAN: 5906301816102
- 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
bulk discounts:
Need more?Frequently asked questions
What pull rating should I choose for a workshop block magnet?
Are block neodymium magnets available in more durable versions?
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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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Physical properties - MPL 4.2x2x0.6 / N52 - lamellar magnet
Specification / characteristics - MPL 4.2x2x0.6 / N52 - lamellar magnet
| 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
| 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
| 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 |
|
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
|
| 1 mm |
|
0.05 kg / 0.11 LBS
50.0 g / 0.5 N
|
| 2 mm |
|
0.10 kg / 0.22 LBS
100.0 g / 1.0 N
|
| 3 mm |
|
0.15 kg / 0.33 LBS
150.0 g / 1.5 N
|
| 5 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 10 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 11 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 12 mm |
|
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% |
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.
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 |
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Pros and cons of neodymium magnets.
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
- 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?
- 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
- 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.
