MPL 10x10x3 / N38 - lamellar magnet
lamellar magnet
Catalog no 020111
GTIN/EAN: 5906301811176
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
2.25 g
Magnetization Direction
↑ axial
Load capacity
2.32 kg / 22.77 N
Magnetic Induction
293.71 mT / 2937 Gs
Coating
[NiCuNi] Nickel
1.414 ZŁ with VAT / pcs + price for transport
1.150 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - MPL 10x10x3 / N38 - lamellar magnet
Specification / characteristics - MPL 10x10x3 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020111 |
| GTIN/EAN | 5906301811176 |
| 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 | 3 mm [±0,1 mm] |
| Weight | 2.25 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.32 kg / 22.77 N |
| Magnetic Induction ~ ? | 293.71 mT / 2937 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 modeling of the product - data
These values represent the outcome of a engineering analysis. Results are based on models for the class Nd2Fe14B. Actual parameters might slightly differ. Treat these calculations as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull vs distance) - interaction chart
MPL 10x10x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2936 Gs
293.6 mT
|
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
strong |
| 1 mm |
2513 Gs
251.3 mT
|
1.70 kg / 3.75 LBS
1700.6 g / 16.7 N
|
safe |
| 2 mm |
2036 Gs
203.6 mT
|
1.12 kg / 2.46 LBS
1115.5 g / 10.9 N
|
safe |
| 3 mm |
1594 Gs
159.4 mT
|
0.68 kg / 1.51 LBS
683.9 g / 6.7 N
|
safe |
| 5 mm |
943 Gs
94.3 mT
|
0.24 kg / 0.53 LBS
239.3 g / 2.3 N
|
safe |
| 10 mm |
285 Gs
28.5 mT
|
0.02 kg / 0.05 LBS
21.8 g / 0.2 N
|
safe |
| 15 mm |
112 Gs
11.2 mT
|
0.00 kg / 0.01 LBS
3.4 g / 0.0 N
|
safe |
| 20 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 LBS
0.8 g / 0.0 N
|
safe |
| 30 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
safe |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Sliding force (vertical surface)
MPL 10x10x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.46 kg / 1.02 LBS
464.0 g / 4.6 N
|
| 1 mm | Stal (~0.2) |
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
|
| 2 mm | Stal (~0.2) |
0.22 kg / 0.49 LBS
224.0 g / 2.2 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 LBS
136.0 g / 1.3 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 0.11 LBS
48.0 g / 0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 LBS
4.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
Table 3: Wall mounting (shearing) - vertical pull
MPL 10x10x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.70 kg / 1.53 LBS
696.0 g / 6.8 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.46 kg / 1.02 LBS
464.0 g / 4.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.23 kg / 0.51 LBS
232.0 g / 2.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.16 kg / 2.56 LBS
1160.0 g / 11.4 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 10x10x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.23 kg / 0.51 LBS
232.0 g / 2.3 N
|
| 1 mm |
|
0.58 kg / 1.28 LBS
580.0 g / 5.7 N
|
| 2 mm |
|
1.16 kg / 2.56 LBS
1160.0 g / 11.4 N
|
| 3 mm |
|
1.74 kg / 3.84 LBS
1740.0 g / 17.1 N
|
| 5 mm |
|
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
| 10 mm |
|
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
| 11 mm |
|
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
| 12 mm |
|
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
Table 5: Thermal stability (material behavior) - power drop
MPL 10x10x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.32 kg / 5.11 LBS
2320.0 g / 22.8 N
|
OK |
| 40 °C | -2.2% |
2.27 kg / 5.00 LBS
2269.0 g / 22.3 N
|
OK |
| 60 °C | -4.4% |
2.22 kg / 4.89 LBS
2217.9 g / 21.8 N
|
|
| 80 °C | -6.6% |
2.17 kg / 4.78 LBS
2166.9 g / 21.3 N
|
|
| 100 °C | -28.8% |
1.65 kg / 3.64 LBS
1651.8 g / 16.2 N
|
Table 6: Two magnets (attraction) - forces in the system
MPL 10x10x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
5.31 kg / 11.71 LBS
4 526 Gs
|
0.80 kg / 1.76 LBS
797 g / 7.8 N
|
N/A |
| 1 mm |
4.63 kg / 10.20 LBS
5 480 Gs
|
0.69 kg / 1.53 LBS
694 g / 6.8 N
|
4.17 kg / 9.18 LBS
~0 Gs
|
| 2 mm |
3.89 kg / 8.59 LBS
5 027 Gs
|
0.58 kg / 1.29 LBS
584 g / 5.7 N
|
3.51 kg / 7.73 LBS
~0 Gs
|
| 3 mm |
3.19 kg / 7.03 LBS
4 549 Gs
|
0.48 kg / 1.05 LBS
478 g / 4.7 N
|
2.87 kg / 6.33 LBS
~0 Gs
|
| 5 mm |
2.01 kg / 4.44 LBS
3 613 Gs
|
0.30 kg / 0.67 LBS
302 g / 3.0 N
|
1.81 kg / 3.99 LBS
~0 Gs
|
| 10 mm |
0.55 kg / 1.21 LBS
1 886 Gs
|
0.08 kg / 0.18 LBS
82 g / 0.8 N
|
0.49 kg / 1.09 LBS
~0 Gs
|
| 20 mm |
0.05 kg / 0.11 LBS
569 Gs
|
0.01 kg / 0.02 LBS
7 g / 0.1 N
|
0.04 kg / 0.10 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
60 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
36 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
24 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
16 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
12 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
9 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Hazards (implants) - precautionary measures
MPL 10x10x3 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 3.0 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 (cracking risk) - collision effects
MPL 10x10x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
32.57 km/h
(9.05 m/s)
|
0.09 J | |
| 30 mm |
56.09 km/h
(15.58 m/s)
|
0.27 J | |
| 50 mm |
72.41 km/h
(20.11 m/s)
|
0.46 J | |
| 100 mm |
102.41 km/h
(28.45 m/s)
|
0.91 J |
Table 9: Coating parameters (durability)
MPL 10x10x3 / 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 10x10x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 197 Mx | 32.0 µWb |
| Pc Coefficient | 0.36 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 10x10x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.32 kg | Standard |
| Water (riverbed) |
2.66 kg
(+0.34 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical surface, the magnet holds just a fraction of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. 0.5mm PC case) severely weakens the holding force.
3. Thermal stability
*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) = 0.36
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 |
Other deals
Pros as well as cons of rare earth magnets.
Advantages
- They retain magnetic properties for nearly ten years – the loss is just ~1% (based on simulations),
- They do not lose their magnetic properties even under close interference source,
- By applying a reflective coating of nickel, the element gains an aesthetic look,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to freedom in forming and the ability to customize to complex applications,
- Versatile presence in modern technologies – they serve a role in HDD drives, motor assemblies, medical devices, as well as modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets start to 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.
- We recommend cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is a challenge,
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what it depends on?
- using a base made of high-permeability steel, acting as a ideal flux conductor
- whose thickness equals approx. 10 mm
- characterized by lack of roughness
- under conditions of ideal adhesion (surface-to-surface)
- during detachment in a direction vertical to the plane
- in temp. approx. 20°C
Key elements affecting lifting force
- Distance – existence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Smoothness – full contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Keep away from children
Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Store out of reach of kids and pets.
Heat warning
Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).
Keep away from computers
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and erase data from cards.
Implant safety
Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Warning for allergy sufferers
Some people have a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Frequent touching may cause an allergic reaction. We strongly advise use safety gloves.
Dust explosion hazard
Mechanical processing of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Magnets are brittle
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets leads to them cracking into shards.
Conscious usage
Handle magnets consciously. Their huge power can surprise even experienced users. Be vigilant and respect their power.
GPS Danger
Navigation devices and smartphones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Pinching danger
Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!
