MPL 50x50x10 / N38 - lamellar magnet
lamellar magnet
Catalog no 020167
GTIN/EAN: 5906301811732
length
50 mm [±0,1 mm]
Width
50 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
187.5 g
Magnetization Direction
↑ axial
Load capacity
33.73 kg / 330.92 N
Magnetic Induction
209.75 mT / 2097 Gs
Coating
[NiCuNi] Nickel
42.88 ZŁ with VAT / pcs + price for transport
34.86 ZŁ net + 23% VAT / pcs
bulk discounts:
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Physical properties - MPL 50x50x10 / N38 - lamellar magnet
Specification / characteristics - MPL 50x50x10 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020167 |
| GTIN/EAN | 5906301811732 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 50 mm [±0,1 mm] |
| Width | 50 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 187.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 33.73 kg / 330.92 N |
| Magnetic Induction ~ ? | 209.75 mT / 2097 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| 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
| 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 |
Technical simulation of the assembly - technical parameters
The following information constitute the outcome of a physical simulation. Results are based on algorithms for the class Nd2Fe14B. Real-world performance may differ from theoretical values. Use these data as a reference point during assembly planning.
Table 1: Static force (pull vs distance) - power drop
MPL 50x50x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2097 Gs
209.7 mT
|
33.73 kg / 74.36 LBS
33730.0 g / 330.9 N
|
critical level |
| 1 mm |
2056 Gs
205.6 mT
|
32.43 kg / 71.50 LBS
32430.0 g / 318.1 N
|
critical level |
| 2 mm |
2009 Gs
200.9 mT
|
30.96 kg / 68.27 LBS
30964.6 g / 303.8 N
|
critical level |
| 3 mm |
1957 Gs
195.7 mT
|
29.38 kg / 64.77 LBS
29380.4 g / 288.2 N
|
critical level |
| 5 mm |
1841 Gs
184.1 mT
|
25.99 kg / 57.30 LBS
25992.3 g / 255.0 N
|
critical level |
| 10 mm |
1514 Gs
151.4 mT
|
17.58 kg / 38.75 LBS
17577.6 g / 172.4 N
|
critical level |
| 15 mm |
1194 Gs
119.4 mT
|
10.93 kg / 24.10 LBS
10931.8 g / 107.2 N
|
critical level |
| 20 mm |
922 Gs
92.2 mT
|
6.51 kg / 14.36 LBS
6512.2 g / 63.9 N
|
strong |
| 30 mm |
543 Gs
54.3 mT
|
2.26 kg / 4.98 LBS
2260.0 g / 22.2 N
|
strong |
| 50 mm |
209 Gs
20.9 mT
|
0.33 kg / 0.74 LBS
334.1 g / 3.3 N
|
low risk |
Table 2: Sliding hold (vertical surface)
MPL 50x50x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
6.75 kg / 14.87 LBS
6746.0 g / 66.2 N
|
| 1 mm | Stal (~0.2) |
6.49 kg / 14.30 LBS
6486.0 g / 63.6 N
|
| 2 mm | Stal (~0.2) |
6.19 kg / 13.65 LBS
6192.0 g / 60.7 N
|
| 3 mm | Stal (~0.2) |
5.88 kg / 12.95 LBS
5876.0 g / 57.6 N
|
| 5 mm | Stal (~0.2) |
5.20 kg / 11.46 LBS
5198.0 g / 51.0 N
|
| 10 mm | Stal (~0.2) |
3.52 kg / 7.75 LBS
3516.0 g / 34.5 N
|
| 15 mm | Stal (~0.2) |
2.19 kg / 4.82 LBS
2186.0 g / 21.4 N
|
| 20 mm | Stal (~0.2) |
1.30 kg / 2.87 LBS
1302.0 g / 12.8 N
|
| 30 mm | Stal (~0.2) |
0.45 kg / 1.00 LBS
452.0 g / 4.4 N
|
| 50 mm | Stal (~0.2) |
0.07 kg / 0.15 LBS
66.0 g / 0.6 N
|
Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 50x50x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
10.12 kg / 22.31 LBS
10119.0 g / 99.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
6.75 kg / 14.87 LBS
6746.0 g / 66.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
3.37 kg / 7.44 LBS
3373.0 g / 33.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
16.87 kg / 37.18 LBS
16865.0 g / 165.4 N
|
Table 4: Steel thickness (saturation) - power losses
MPL 50x50x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
1.69 kg / 3.72 LBS
1686.5 g / 16.5 N
|
| 1 mm |
|
4.22 kg / 9.30 LBS
4216.3 g / 41.4 N
|
| 2 mm |
|
8.43 kg / 18.59 LBS
8432.5 g / 82.7 N
|
| 3 mm |
|
12.65 kg / 27.89 LBS
12648.8 g / 124.1 N
|
| 5 mm |
|
21.08 kg / 46.48 LBS
21081.2 g / 206.8 N
|
| 10 mm |
|
33.73 kg / 74.36 LBS
33730.0 g / 330.9 N
|
| 11 mm |
|
33.73 kg / 74.36 LBS
33730.0 g / 330.9 N
|
| 12 mm |
|
33.73 kg / 74.36 LBS
33730.0 g / 330.9 N
|
Table 5: Working in heat (material behavior) - thermal limit
MPL 50x50x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
33.73 kg / 74.36 LBS
33730.0 g / 330.9 N
|
OK |
| 40 °C | -2.2% |
32.99 kg / 72.73 LBS
32987.9 g / 323.6 N
|
OK |
| 60 °C | -4.4% |
32.25 kg / 71.09 LBS
32245.9 g / 316.3 N
|
|
| 80 °C | -6.6% |
31.50 kg / 69.45 LBS
31503.8 g / 309.1 N
|
|
| 100 °C | -28.8% |
24.02 kg / 52.95 LBS
24015.8 g / 235.6 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 50x50x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
67.80 kg / 149.46 LBS
3 611 Gs
|
10.17 kg / 22.42 LBS
10169 g / 99.8 N
|
N/A |
| 1 mm |
66.54 kg / 146.70 LBS
4 156 Gs
|
9.98 kg / 22.01 LBS
9982 g / 97.9 N
|
59.89 kg / 132.03 LBS
~0 Gs
|
| 2 mm |
65.18 kg / 143.70 LBS
4 113 Gs
|
9.78 kg / 21.56 LBS
9777 g / 95.9 N
|
58.66 kg / 129.33 LBS
~0 Gs
|
| 3 mm |
63.74 kg / 140.53 LBS
4 067 Gs
|
9.56 kg / 21.08 LBS
9562 g / 93.8 N
|
57.37 kg / 126.48 LBS
~0 Gs
|
| 5 mm |
60.67 kg / 133.75 LBS
3 968 Gs
|
9.10 kg / 20.06 LBS
9101 g / 89.3 N
|
54.60 kg / 120.38 LBS
~0 Gs
|
| 10 mm |
52.24 kg / 115.18 LBS
3 682 Gs
|
7.84 kg / 17.28 LBS
7836 g / 76.9 N
|
47.02 kg / 103.66 LBS
~0 Gs
|
| 20 mm |
35.33 kg / 77.89 LBS
3 028 Gs
|
5.30 kg / 11.68 LBS
5299 g / 52.0 N
|
31.80 kg / 70.10 LBS
~0 Gs
|
| 50 mm |
7.69 kg / 16.96 LBS
1 413 Gs
|
1.15 kg / 2.54 LBS
1154 g / 11.3 N
|
6.92 kg / 15.26 LBS
~0 Gs
|
| 60 mm |
4.54 kg / 10.01 LBS
1 086 Gs
|
0.68 kg / 1.50 LBS
681 g / 6.7 N
|
4.09 kg / 9.01 LBS
~0 Gs
|
| 70 mm |
2.72 kg / 6.01 LBS
841 Gs
|
0.41 kg / 0.90 LBS
409 g / 4.0 N
|
2.45 kg / 5.41 LBS
~0 Gs
|
| 80 mm |
1.67 kg / 3.68 LBS
658 Gs
|
0.25 kg / 0.55 LBS
250 g / 2.5 N
|
1.50 kg / 3.31 LBS
~0 Gs
|
| 90 mm |
1.05 kg / 2.31 LBS
521 Gs
|
0.16 kg / 0.35 LBS
157 g / 1.5 N
|
0.94 kg / 2.08 LBS
~0 Gs
|
| 100 mm |
0.67 kg / 1.48 LBS
417 Gs
|
0.10 kg / 0.22 LBS
101 g / 1.0 N
|
0.60 kg / 1.33 LBS
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
MPL 50x50x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 21.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 16.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 13.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 10.0 cm |
| Remote | 50 Gs (5.0 mT) | 9.5 cm |
| Payment card | 400 Gs (40.0 mT) | 4.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 3.0 cm |
Table 8: Collisions (kinetic energy) - collision effects
MPL 50x50x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
17.38 km/h
(4.83 m/s)
|
2.19 J | |
| 30 mm |
24.39 km/h
(6.78 m/s)
|
4.30 J | |
| 50 mm |
30.43 km/h
(8.45 m/s)
|
6.70 J | |
| 100 mm |
42.78 km/h
(11.88 m/s)
|
13.24 J |
Table 9: Surface protection spec
MPL 50x50x10 / 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 50x50x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 61 501 Mx | 615.0 µWb |
| Pc Coefficient | 0.26 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 50x50x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 33.73 kg | Standard |
| Water (riverbed) |
38.62 kg
(+4.89 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Note: On a vertical wall, the magnet retains just approx. 20-30% of its max power.
2. Plate thickness effect
*Thin steel (e.g. computer case) significantly weakens the holding force.
3. Heat tolerance
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.26
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.
Chemical composition
| 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 |
View also proposals
Strengths and weaknesses of Nd2Fe14B magnets.
Strengths
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
- They possess excellent resistance to magnetism drop due to opposing magnetic fields,
- By covering with a smooth layer of silver, the element presents an elegant look,
- The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to modularity in constructing and the ability to customize to complex applications,
- Fundamental importance in modern industrial fields – they are used in data components, brushless drives, medical equipment, as well as multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- NdFeB magnets demagnetize 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 extremely resistant to heat
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complicated forms in magnets, we propose using casing - magnetic mount.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices are able to be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what affects it?
- with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
- whose thickness is min. 10 mm
- with an ideally smooth touching surface
- under conditions of no distance (surface-to-surface)
- under axial application of breakaway force (90-degree angle)
- at temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Material type – the best choice is pure iron steel. Cast iron may have worse magnetic properties.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
- Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
Precautions when working with NdFeB magnets
Hand protection
Risk of injury: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.
Fragile material
Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.
Precision electronics
A strong magnetic field interferes with the operation of magnetometers in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.
Powerful field
Use magnets consciously. Their huge power can shock even professionals. Plan your moves and do not underestimate their force.
Life threat
For implant holders: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or request help to handle the magnets.
Fire risk
Machining of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Avoid contact if allergic
Studies show that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands or opt for encased magnets.
Do not overheat magnets
Standard neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.
Choking Hazard
These products are not suitable for play. Accidental ingestion of multiple magnets can lead to them pinching intestinal walls, which poses a critical condition and requires urgent medical intervention.
Safe distance
Data protection: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).
