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
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
1.150 zł net / pcs
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bulk discounts:
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 data of the product - 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 |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 |
Engineering analysis of the magnet - report
Presented values represent the result of a mathematical simulation. Values were calculated on models for the material Nd2Fe14B. Operational conditions might slightly deviate from the simulation results. Use these data as a reference point when designing systems.
Table 1: Static force (force vs gap) - power drop
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
|
medium risk |
| 1 mm |
2513 Gs
251.3 mT
|
1.70 kg / 3.75 LBS
1700.6 g / 16.7 N
|
weak grip |
| 2 mm |
2036 Gs
203.6 mT
|
1.12 kg / 2.46 LBS
1115.5 g / 10.9 N
|
weak grip |
| 3 mm |
1594 Gs
159.4 mT
|
0.68 kg / 1.51 LBS
683.9 g / 6.7 N
|
weak grip |
| 5 mm |
943 Gs
94.3 mT
|
0.24 kg / 0.53 LBS
239.3 g / 2.3 N
|
weak grip |
| 10 mm |
285 Gs
28.5 mT
|
0.02 kg / 0.05 LBS
21.8 g / 0.2 N
|
weak grip |
| 15 mm |
112 Gs
11.2 mT
|
0.00 kg / 0.01 LBS
3.4 g / 0.0 N
|
weak grip |
| 20 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 LBS
0.8 g / 0.0 N
|
weak grip |
| 30 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
weak grip |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding force (wall)
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: Vertical assembly (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: Material efficiency (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 resistance (stability) - 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 Strength (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 |
| Mobile device | 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) - warning
MPL 10x10x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.15 km/h
(6.99 m/s)
|
0.05 J | |
| 30 mm |
25.28 km/h
(7.02 m/s)
|
0.06 J | |
| 50 mm |
25.27 km/h
(7.02 m/s)
|
0.06 J | |
| 100 mm |
25.29 km/h
(7.02 m/s)
|
0.06 J |
Table 9: Anti-corrosion coating 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: Physics of underwater searching
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. Wall mount (shear)
*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. computer case) drastically reduces the holding force.
3. Thermal stability
*For standard magnets, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.36
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.
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 proposals
Strengths as well as weaknesses of rare earth magnets.
Advantages
- They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
- They are extremely resistant to demagnetization induced by external magnetic fields,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Due to the possibility of precise forming and customization to individualized requirements, magnetic components can be created in a variety of shapes and sizes, which expands the range of possible applications,
- Significant place in future technologies – they are utilized in HDD drives, brushless drives, medical equipment, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions
Weaknesses
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as 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
- They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We recommend cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Maximum holding power of the magnet – what affects it?
- with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
- whose transverse dimension is min. 10 mm
- with a surface perfectly flat
- with direct contact (without impurities)
- during pulling in a direction vertical to the plane
- in temp. approx. 20°C
Key elements affecting lifting force
- Distance (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Direction of force – highest force is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Metal type – different alloys attracts identically. High carbon content worsen the attraction effect.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the load capacity.
Safety rules for work with neodymium magnets
Avoid contact if allergic
Some people suffer from a hypersensitivity to Ni, which is the common plating for neodymium magnets. Frequent touching can result in a rash. We suggest use safety gloves.
Eye protection
Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
Product not for children
These products are not intended for children. Eating several magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates immediate surgery.
Thermal limits
Keep cool. NdFeB magnets are susceptible to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Immense force
Use magnets with awareness. Their immense force can surprise even professionals. Be vigilant and respect their power.
Implant safety
Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Compass and GPS
Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Cards and drives
Device Safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).
Combustion hazard
Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Crushing risk
Risk of injury: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.
