MPL 10x10x4 / N38 - lamellar magnet
lamellar magnet
Catalog no 020112
GTIN/EAN: 5906301811183
- length
- 10 mm [±0,1 mm]
- Width
- 10 mm [±0,1 mm]
- Height
- 4 mm [±0,1 mm]
- Weight
- 3 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
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Need more?Frequently asked questions
How much will a block magnet really hold?
What is the maximum working temperature?
What safety factor should I allow?
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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Technical parameters - MPL 10x10x4 / N38 - lamellar magnet
Specification / characteristics - MPL 10x10x4 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020112 |
| GTIN/EAN | 5906301811183 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 10 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 4 mm [±0,1 mm] |
| Weight | 3 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.10 kg / 30.39 N |
| Magnetic Induction ~ ? | 360.85 mT / 3608 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 | 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 simulation of the assembly - data
These information represent the direct effect of a physical simulation. Results rely on algorithms for the class Nd2Fe14B. Actual conditions may differ from theoretical values. Treat these calculations as a reference point when designing systems.
Table 1: Static pull force (pull vs distance) - characteristics
MPL 10x10x4 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3606 Gs
360.6 mT
|
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
warning |
| 1 mm |
3035 Gs
303.5 mT
|
2.20 kg / 4.84 pounds
2195.5 g / 21.5 N
|
warning |
| 2 mm |
2436 Gs
243.6 mT
|
1.41 kg / 3.12 pounds
1413.8 g / 13.9 N
|
safe |
| 3 mm |
1900 Gs
190.0 mT
|
0.86 kg / 1.90 pounds
860.8 g / 8.4 N
|
safe |
| 5 mm |
1127 Gs
112.7 mT
|
0.30 kg / 0.67 pounds
302.7 g / 3.0 N
|
safe |
| 10 mm |
347 Gs
34.7 mT
|
0.03 kg / 0.06 pounds
28.8 g / 0.3 N
|
safe |
| 15 mm |
140 Gs
14.0 mT
|
0.00 kg / 0.01 pounds
4.6 g / 0.0 N
|
safe |
| 20 mm |
68 Gs
6.8 mT
|
0.00 kg / 0.00 pounds
1.1 g / 0.0 N
|
safe |
| 30 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
safe |
| 50 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
Table 2: Shear hold (wall)
MPL 10x10x4 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.62 kg / 1.37 pounds
620.0 g / 6.1 N
|
| 1 mm | Stal (~0.2) |
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
| 2 mm | Stal (~0.2) |
0.28 kg / 0.62 pounds
282.0 g / 2.8 N
|
| 3 mm | Stal (~0.2) |
0.17 kg / 0.38 pounds
172.0 g / 1.7 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.13 pounds
60.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.01 pounds
6.0 g / 0.1 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 10x10x4 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.93 kg / 2.05 pounds
930.0 g / 9.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.62 kg / 1.37 pounds
620.0 g / 6.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.31 kg / 0.68 pounds
310.0 g / 3.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.55 kg / 3.42 pounds
1550.0 g / 15.2 N
|
Table 4: Material efficiency (saturation) - power losses
MPL 10x10x4 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.31 kg / 0.68 pounds
310.0 g / 3.0 N
|
| 1 mm |
|
0.78 kg / 1.71 pounds
775.0 g / 7.6 N
|
| 2 mm |
|
1.55 kg / 3.42 pounds
1550.0 g / 15.2 N
|
| 3 mm |
|
2.33 kg / 5.13 pounds
2325.0 g / 22.8 N
|
| 5 mm |
|
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
| 10 mm |
|
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
| 11 mm |
|
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
| 12 mm |
|
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
Table 5: Thermal stability (stability) - power drop
MPL 10x10x4 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.10 kg / 6.83 pounds
3100.0 g / 30.4 N
|
OK |
| 40 °C | -2.2% |
3.03 kg / 6.68 pounds
3031.8 g / 29.7 N
|
OK |
| 60 °C | -4.4% |
2.96 kg / 6.53 pounds
2963.6 g / 29.1 N
|
|
| 80 °C | -6.6% |
2.90 kg / 6.38 pounds
2895.4 g / 28.4 N
|
|
| 100 °C | -28.8% |
2.21 kg / 4.87 pounds
2207.2 g / 21.7 N
|
Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 10x10x4 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
8.02 kg / 17.68 pounds
5 067 Gs
|
1.20 kg / 2.65 pounds
1203 g / 11.8 N
|
N/A |
| 1 mm |
6.85 kg / 15.11 pounds
6 667 Gs
|
1.03 kg / 2.27 pounds
1028 g / 10.1 N
|
6.17 kg / 13.59 pounds
~0 Gs
|
| 2 mm |
5.68 kg / 12.52 pounds
6 070 Gs
|
0.85 kg / 1.88 pounds
852 g / 8.4 N
|
5.11 kg / 11.27 pounds
~0 Gs
|
| 3 mm |
4.60 kg / 10.14 pounds
5 463 Gs
|
0.69 kg / 1.52 pounds
690 g / 6.8 N
|
4.14 kg / 9.13 pounds
~0 Gs
|
| 5 mm |
2.87 kg / 6.32 pounds
4 313 Gs
|
0.43 kg / 0.95 pounds
430 g / 4.2 N
|
2.58 kg / 5.69 pounds
~0 Gs
|
| 10 mm |
0.78 kg / 1.73 pounds
2 254 Gs
|
0.12 kg / 0.26 pounds
117 g / 1.2 N
|
0.70 kg / 1.55 pounds
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 pounds
695 Gs
|
0.01 kg / 0.02 pounds
11 g / 0.1 N
|
0.07 kg / 0.15 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
76 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
46 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
30 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
21 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
15 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
11 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) - precautionary measures
MPL 10x10x4 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 50 Gs (5.0 mT) | 2.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Impact energy (kinetic energy) - collision effects
MPL 10x10x4 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.69 km/h
(6.86 m/s)
|
0.07 J | |
| 30 mm |
24.82 km/h
(6.90 m/s)
|
0.07 J | |
| 50 mm |
24.82 km/h
(6.89 m/s)
|
0.07 J | |
| 100 mm |
24.83 km/h
(6.90 m/s)
|
0.07 J |
Table 9: Corrosion resistance
MPL 10x10x4 / 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 10x10x4 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 760 Mx | 37.6 µWb |
| Pc Coefficient | 0.46 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 10x10x4 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.10 kg | Standard |
| Water (riverbed) |
3.55 kg
(+0.45 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Warning: On a vertical wall, the magnet retains just ~20% of its nominal pull.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) severely reduces the holding force.
3. Power loss vs temp
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.46
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.
Elemental analysis
| 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 deals
Strengths and weaknesses of Nd2Fe14B magnets.
Benefits
- They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
- They possess excellent resistance to weakening of magnetic properties due to external fields,
- A magnet with a smooth gold surface looks better,
- Magnets are distinguished by exceptionally strong magnetic induction on the outer layer,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to flexibility in shaping and the capacity to modify to individual projects,
- Significant place in future technologies – they find application in data components, motor assemblies, precision medical tools, as well as technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Limitations
- Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited possibility of creating nuts in the magnet and complex forms - recommended is casing - magnet mounting.
- Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
- possessing a massiveness of minimum 10 mm to avoid saturation
- with an ground touching surface
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
Practical aspects of lifting capacity – factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Plate material – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and holding force.
- Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was measured by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the load capacity.
Safe handling of neodymium magnets
Fragile material
Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.
Protect data
Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).
Fire risk
Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Safe operation
Handle magnets with awareness. Their huge power can shock even experienced users. Stay alert and respect their power.
Adults only
Strictly store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are life-threatening.
Pacemakers
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Sensitization to coating
Certain individuals experience a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Frequent touching can result in skin redness. We strongly advise use protective gloves.
Phone sensors
Remember: rare earth magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and GPS.
Crushing risk
Big blocks can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Power loss in heat
Monitor thermal conditions. Exposing the magnet to high heat will ruin its magnetic structure and strength.
