MPL 20x10x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020126
GTIN/EAN: 5906301811329
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 ZŁ with VAT / pcs + price for transport
0.810 ZŁ net + 23% VAT / pcs
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Technical details - MPL 20x10x1 / N38 - lamellar magnet
Specification / characteristics - MPL 20x10x1 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020126 |
| GTIN/EAN | 5906301811329 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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 |
Engineering simulation of the magnet - data
The following information are the direct effect of a engineering simulation. Results are based on algorithms for the material Nd2Fe14B. Real-world performance may differ. Please consider these data as a preliminary roadmap during assembly planning.
Table 1: Static pull force (force vs distance) - interaction chart
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 pounds
560.0 g / 5.5 N
|
weak grip |
| 1 mm |
811 Gs
81.1 mT
|
0.49 kg / 1.07 pounds
485.7 g / 4.8 N
|
weak grip |
| 2 mm |
713 Gs
71.3 mT
|
0.37 kg / 0.83 pounds
374.9 g / 3.7 N
|
weak grip |
| 3 mm |
603 Gs
60.3 mT
|
0.27 kg / 0.59 pounds
267.9 g / 2.6 N
|
weak grip |
| 5 mm |
409 Gs
40.9 mT
|
0.12 kg / 0.27 pounds
123.4 g / 1.2 N
|
weak grip |
| 10 mm |
157 Gs
15.7 mT
|
0.02 kg / 0.04 pounds
18.1 g / 0.2 N
|
weak grip |
| 15 mm |
69 Gs
6.9 mT
|
0.00 kg / 0.01 pounds
3.5 g / 0.0 N
|
weak grip |
| 20 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 pounds
0.9 g / 0.0 N
|
weak grip |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
weak grip |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Vertical force (wall)
MPL 20x10x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.11 kg / 0.25 pounds
112.0 g / 1.1 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 0.22 pounds
98.0 g / 1.0 N
|
| 2 mm | Stal (~0.2) |
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
|
| 3 mm | Stal (~0.2) |
0.05 kg / 0.12 pounds
54.0 g / 0.5 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 pounds
24.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Wall mounting (shearing) - vertical pull
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 pounds
168.0 g / 1.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.11 kg / 0.25 pounds
112.0 g / 1.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
Table 4: Material efficiency (substrate influence) - power losses
MPL 20x10x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| 1 mm |
|
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
|
| 2 mm |
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
| 3 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
| 5 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 10 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 11 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 12 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
Table 5: Working in heat (stability) - thermal limit
MPL 20x10x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
OK |
| 40 °C | -2.2% |
0.55 kg / 1.21 pounds
547.7 g / 5.4 N
|
OK |
| 60 °C | -4.4% |
0.54 kg / 1.18 pounds
535.4 g / 5.3 N
|
|
| 80 °C | -6.6% |
0.52 kg / 1.15 pounds
523.0 g / 5.1 N
|
|
| 100 °C | -28.8% |
0.40 kg / 0.88 pounds
398.7 g / 3.9 N
|
Table 6: Two magnets (repulsion) - field range
MPL 20x10x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.94 kg / 2.06 pounds
1 682 Gs
|
0.14 kg / 0.31 pounds
140 g / 1.4 N
|
N/A |
| 1 mm |
0.89 kg / 1.96 pounds
1 696 Gs
|
0.13 kg / 0.29 pounds
133 g / 1.3 N
|
0.80 kg / 1.76 pounds
~0 Gs
|
| 2 mm |
0.81 kg / 1.79 pounds
1 623 Gs
|
0.12 kg / 0.27 pounds
122 g / 1.2 N
|
0.73 kg / 1.61 pounds
~0 Gs
|
| 3 mm |
0.72 kg / 1.59 pounds
1 530 Gs
|
0.11 kg / 0.24 pounds
108 g / 1.1 N
|
0.65 kg / 1.43 pounds
~0 Gs
|
| 5 mm |
0.53 kg / 1.18 pounds
1 316 Gs
|
0.08 kg / 0.18 pounds
80 g / 0.8 N
|
0.48 kg / 1.06 pounds
~0 Gs
|
| 10 mm |
0.21 kg / 0.45 pounds
818 Gs
|
0.03 kg / 0.07 pounds
31 g / 0.3 N
|
0.19 kg / 0.41 pounds
~0 Gs
|
| 20 mm |
0.03 kg / 0.07 pounds
313 Gs
|
0.00 kg / 0.01 pounds
5 g / 0.0 N
|
0.03 kg / 0.06 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
40 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
25 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
16 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
11 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
8 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
6 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (implants) - 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: Impact energy (cracking risk) - collision effects
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: Electrical 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% |
1. Sliding resistance
*Caution: On a vertical surface, the magnet retains only approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) drastically limits the holding force.
3. Thermal stability
*For N38 material, the max working temp 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.
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They do not lose magnetism, even after approximately ten years – the drop in strength is only ~1% (based on measurements),
- They have excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
- In other words, due to the smooth finish of silver, the element looks attractive,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- In view of the potential of free molding and customization to specialized needs, magnetic components can be created in a broad palette of geometric configurations, which makes them more universal,
- Huge importance in modern industrial fields – they are used in magnetic memories, electric motors, diagnostic systems, also technologically advanced constructions.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Weaknesses
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- Neodymium magnets lose force 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 very resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating nuts and complicated forms in magnets, we recommend using casing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets are able to complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Holding force characteristics
Maximum holding power of the magnet – what it depends on?
- on a base made of mild steel, optimally conducting the magnetic flux
- possessing a massiveness of at least 10 mm to avoid saturation
- characterized by even structure
- under conditions of no distance (surface-to-surface)
- under axial application of breakaway force (90-degree angle)
- in stable room temperature
What influences lifting capacity in practice
- Gap (betwixt the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Material type – the best choice is high-permeability steel. Stainless steels may attract less.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
- Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Adults only
Always store magnets away from children. Ingestion danger is high, and the effects of magnets connecting inside the body are fatal.
Avoid contact if allergic
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease working with magnets and wear gloves.
Demagnetization risk
Avoid heat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Magnet fragility
Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.
Electronic hazard
Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).
GPS and phone interference
A powerful magnetic field disrupts the operation of magnetometers in phones and navigation systems. Maintain magnets close to a device to prevent damaging the sensors.
Fire warning
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Physical harm
Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!
Do not underestimate power
Be careful. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can react.
ICD Warning
For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.
