MPL 10x7x3 / N38 - lamellar magnet
lamellar magnet
Catalog no 020115
GTIN/EAN: 5906301811213
length
10 mm [±0,1 mm]
Width
7 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
1.58 g
Magnetization Direction
↑ axial
Load capacity
2.02 kg / 19.82 N
Magnetic Induction
339.79 mT / 3398 Gs
Coating
[NiCuNi] Nickel
0.849 ZŁ with VAT / pcs + price for transport
0.690 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us now
+48 888 99 98 98
or let us know via
our online form
the contact page.
Parameters as well as shape of magnetic components can be verified with our
our magnetic calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical specification of the product - MPL 10x7x3 / N38 - lamellar magnet
Specification / characteristics - MPL 10x7x3 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020115 |
| GTIN/EAN | 5906301811213 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 10 mm [±0,1 mm] |
| Width | 7 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 1.58 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.02 kg / 19.82 N |
| Magnetic Induction ~ ? | 339.79 mT / 3398 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 |
Physical modeling of the assembly - data
Presented data constitute the direct effect of a mathematical simulation. Results are based on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Please consider these calculations as a reference point for designers.
Table 1: Static force (force vs distance) - interaction chart
MPL 10x7x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3396 Gs
339.6 mT
|
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
warning |
| 1 mm |
2727 Gs
272.7 mT
|
1.30 kg / 2.87 LBS
1303.2 g / 12.8 N
|
safe |
| 2 mm |
2053 Gs
205.3 mT
|
0.74 kg / 1.63 LBS
738.2 g / 7.2 N
|
safe |
| 3 mm |
1502 Gs
150.2 mT
|
0.40 kg / 0.87 LBS
395.2 g / 3.9 N
|
safe |
| 5 mm |
803 Gs
80.3 mT
|
0.11 kg / 0.25 LBS
113.0 g / 1.1 N
|
safe |
| 10 mm |
216 Gs
21.6 mT
|
0.01 kg / 0.02 LBS
8.2 g / 0.1 N
|
safe |
| 15 mm |
82 Gs
8.2 mT
|
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
|
safe |
| 20 mm |
39 Gs
3.9 mT
|
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
|
safe |
| 30 mm |
13 Gs
1.3 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Shear force (wall)
MPL 10x7x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.40 kg / 0.89 LBS
404.0 g / 4.0 N
|
| 1 mm | Stal (~0.2) |
0.26 kg / 0.57 LBS
260.0 g / 2.6 N
|
| 2 mm | Stal (~0.2) |
0.15 kg / 0.33 LBS
148.0 g / 1.5 N
|
| 3 mm | Stal (~0.2) |
0.08 kg / 0.18 LBS
80.0 g / 0.8 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 LBS
22.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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 (sliding) - vertical pull
MPL 10x7x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.61 kg / 1.34 LBS
606.0 g / 5.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.40 kg / 0.89 LBS
404.0 g / 4.0 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.20 kg / 0.45 LBS
202.0 g / 2.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.01 kg / 2.23 LBS
1010.0 g / 9.9 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 10x7x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.20 kg / 0.45 LBS
202.0 g / 2.0 N
|
| 1 mm |
|
0.51 kg / 1.11 LBS
505.0 g / 5.0 N
|
| 2 mm |
|
1.01 kg / 2.23 LBS
1010.0 g / 9.9 N
|
| 3 mm |
|
1.52 kg / 3.34 LBS
1515.0 g / 14.9 N
|
| 5 mm |
|
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
| 10 mm |
|
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
| 11 mm |
|
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
| 12 mm |
|
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 10x7x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
|
OK |
| 40 °C | -2.2% |
1.98 kg / 4.36 LBS
1975.6 g / 19.4 N
|
OK |
| 60 °C | -4.4% |
1.93 kg / 4.26 LBS
1931.1 g / 18.9 N
|
|
| 80 °C | -6.6% |
1.89 kg / 4.16 LBS
1886.7 g / 18.5 N
|
|
| 100 °C | -28.8% |
1.44 kg / 3.17 LBS
1438.2 g / 14.1 N
|
Table 6: Two magnets (repulsion) - forces in the system
MPL 10x7x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
4.98 kg / 10.97 LBS
4 893 Gs
|
0.75 kg / 1.65 LBS
746 g / 7.3 N
|
N/A |
| 1 mm |
4.09 kg / 9.01 LBS
6 155 Gs
|
0.61 kg / 1.35 LBS
613 g / 6.0 N
|
3.68 kg / 8.11 LBS
~0 Gs
|
| 2 mm |
3.21 kg / 7.08 LBS
5 455 Gs
|
0.48 kg / 1.06 LBS
482 g / 4.7 N
|
2.89 kg / 6.37 LBS
~0 Gs
|
| 3 mm |
2.44 kg / 5.39 LBS
4 758 Gs
|
0.37 kg / 0.81 LBS
366 g / 3.6 N
|
2.20 kg / 4.85 LBS
~0 Gs
|
| 5 mm |
1.34 kg / 2.94 LBS
3 518 Gs
|
0.20 kg / 0.44 LBS
200 g / 2.0 N
|
1.20 kg / 2.65 LBS
~0 Gs
|
| 10 mm |
0.28 kg / 0.61 LBS
1 606 Gs
|
0.04 kg / 0.09 LBS
42 g / 0.4 N
|
0.25 kg / 0.55 LBS
~0 Gs
|
| 20 mm |
0.02 kg / 0.04 LBS
433 Gs
|
0.00 kg / 0.01 LBS
3 g / 0.0 N
|
0.02 kg / 0.04 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
43 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
26 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
17 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
11 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
8 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
6 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Protective zones (electronics) - precautionary measures
MPL 10x7x3 / 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) | 3.0 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) | 1.0 cm |
Table 8: Collisions (kinetic energy) - collision effects
MPL 10x7x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
36.15 km/h
(10.04 m/s)
|
0.08 J | |
| 30 mm |
62.46 km/h
(17.35 m/s)
|
0.24 J | |
| 50 mm |
80.63 km/h
(22.40 m/s)
|
0.40 J | |
| 100 mm |
114.03 km/h
(31.68 m/s)
|
0.79 J |
Table 9: Corrosion resistance
MPL 10x7x3 / 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 (Pc)
MPL 10x7x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 480 Mx | 24.8 µWb |
| Pc Coefficient | 0.42 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 10x7x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.02 kg | Standard |
| Water (riverbed) |
2.31 kg
(+0.29 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its max power.
2. Steel saturation
*Thin metal sheet (e.g. 0.5mm PC case) severely reduces the holding force.
3. Temperature resistance
*For N38 grade, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.42
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 |
View also proposals
Advantages and disadvantages of neodymium magnets.
Benefits
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- They feature excellent resistance to magnetic field loss when exposed to external magnetic sources,
- Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold-plated, or silver-plated gives an clean appearance,
- Neodymium magnets achieve maximum magnetic induction on a small surface, which allows for strong attraction,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of individual creating as well as adjusting to specific applications,
- Universal use in high-tech industry – they are used in HDD drives, electric motors, diagnostic systems, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in compact constructions
Cons
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- NdFeB magnets demagnetize 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 extremely resistant to heat
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of making nuts in the magnet and complicated forms - preferred is a housing - mounting mechanism.
- Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
- With mass production the cost of neodymium magnets is economically unviable,
Holding force characteristics
Magnetic strength at its maximum – what it depends on?
- on a base made of structural steel, effectively closing the magnetic flux
- with a thickness of at least 10 mm
- with a plane cleaned and smooth
- with total lack of distance (without impurities)
- during detachment in a direction perpendicular to the plane
- at room temperature
What influences lifting capacity in practice
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Load vector – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Metal type – not every steel attracts identically. Alloy additives weaken the attraction effect.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was measured with the use of a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Sensitization to coating
Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness happens, cease handling magnets and wear gloves.
Do not underestimate power
Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Choking Hazard
Neodymium magnets are not intended for children. Eating a few magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.
Data carriers
Device Safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Magnets are brittle
Neodymium magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them breaking into small pieces.
Life threat
For implant holders: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.
Demagnetization risk
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Fire warning
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
GPS Danger
Be aware: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, tablet, and GPS.
Bone fractures
Mind your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Be careful!
