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 details - 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 simulation of the product - technical parameters
The following data are the outcome of a engineering analysis. Results were calculated on algorithms for the material Nd2Fe14B. Actual conditions might slightly differ from theoretical values. Treat these calculations as a reference point when designing systems.
Table 1: Static force (force 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
|
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: Shear 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 (sliding) - 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: Working in heat (material behavior) - resistance threshold
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: Magnet-Magnet interaction (repulsion) - field range
MPL 10x10x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral 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: Safety (HSE) (implants) - warnings
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 |
| Car key | 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: Collisions (cracking risk) - warning
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: Surface protection spec
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. Sliding resistance
*Warning: On a vertical wall, the magnet holds just a fraction of its nominal pull.
2. Plate thickness effect
*Thin metal sheet (e.g. 0.5mm PC case) drastically reduces 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) = 0.36
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of Nd2Fe14B magnets.
Benefits
- Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (according to research),
- They retain their magnetic properties even under external field action,
- Thanks to the elegant finish, the surface of nickel, gold-plated, or silver gives an elegant appearance,
- Neodymium magnets generate maximum magnetic induction on a their surface, which increases force concentration,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Possibility of precise creating and adapting to complex applications,
- Fundamental importance in advanced technology sectors – they are utilized in computer drives, electromotive mechanisms, precision medical tools, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in miniature devices
Cons
- At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited possibility of producing nuts in the magnet and complicated shapes - preferred is cover - mounting mechanism.
- Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Additionally, 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 can limit application in large quantities
Lifting parameters
Maximum holding power of the magnet – what contributes to it?
- on a plate made of structural steel, perfectly concentrating the magnetic field
- with a thickness no less than 10 mm
- characterized by smoothness
- with total lack of distance (without coatings)
- for force acting at a right angle (in the magnet axis)
- at ambient temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Load vector – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.
Safety rules for work with neodymium magnets
This is not a toy
Adult use only. Small elements can be swallowed, leading to serious injuries. Store out of reach of children and animals.
Fragile material
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.
Safe operation
Handle magnets consciously. Their immense force can surprise even professionals. Stay alert and respect their power.
Medical implants
Individuals with a ICD must maintain an absolute distance from magnets. The magnetic field can interfere with the operation of the implant.
Permanent damage
Avoid heat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Magnetic interference
Be aware: neodymium magnets generate a field that confuses precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.
Magnetic media
Intense magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.
Nickel coating and allergies
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.
Crushing risk
Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, crushing everything in their path. Be careful!
Fire risk
Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.
