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
Load capacity
3.10 kg / 30.39 N
Magnetic Induction
360.85 mT / 3608 Gs
Coating
[NiCuNi] Nickel
1.538 ZŁ with VAT / pcs + price for transport
1.250 ZŁ net + 23% VAT / pcs
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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 | 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 |
Engineering analysis of the assembly - report
Presented values are the outcome of a mathematical simulation. Values rely on models for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Use these calculations as a reference point during assembly planning.
Table 1: Static force (pull vs distance) - interaction chart
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 lbs
3100.0 g / 30.4 N
|
strong |
| 1 mm |
3035 Gs
303.5 mT
|
2.20 kg / 4.84 lbs
2195.5 g / 21.5 N
|
strong |
| 2 mm |
2436 Gs
243.6 mT
|
1.41 kg / 3.12 lbs
1413.8 g / 13.9 N
|
safe |
| 3 mm |
1900 Gs
190.0 mT
|
0.86 kg / 1.90 lbs
860.8 g / 8.4 N
|
safe |
| 5 mm |
1127 Gs
112.7 mT
|
0.30 kg / 0.67 lbs
302.7 g / 3.0 N
|
safe |
| 10 mm |
347 Gs
34.7 mT
|
0.03 kg / 0.06 lbs
28.8 g / 0.3 N
|
safe |
| 15 mm |
140 Gs
14.0 mT
|
0.00 kg / 0.01 lbs
4.6 g / 0.0 N
|
safe |
| 20 mm |
68 Gs
6.8 mT
|
0.00 kg / 0.00 lbs
1.1 g / 0.0 N
|
safe |
| 30 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
safe |
| 50 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 lbs
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 lbs
620.0 g / 6.1 N
|
| 1 mm | Stal (~0.2) |
0.44 kg / 0.97 lbs
440.0 g / 4.3 N
|
| 2 mm | Stal (~0.2) |
0.28 kg / 0.62 lbs
282.0 g / 2.8 N
|
| 3 mm | Stal (~0.2) |
0.17 kg / 0.38 lbs
172.0 g / 1.7 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.13 lbs
60.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.01 lbs
6.0 g / 0.1 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 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 lbs
930.0 g / 9.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.62 kg / 1.37 lbs
620.0 g / 6.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.31 kg / 0.68 lbs
310.0 g / 3.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.55 kg / 3.42 lbs
1550.0 g / 15.2 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 10x10x4 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.31 kg / 0.68 lbs
310.0 g / 3.0 N
|
| 1 mm |
|
0.78 kg / 1.71 lbs
775.0 g / 7.6 N
|
| 2 mm |
|
1.55 kg / 3.42 lbs
1550.0 g / 15.2 N
|
| 3 mm |
|
2.33 kg / 5.13 lbs
2325.0 g / 22.8 N
|
| 5 mm |
|
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
|
| 10 mm |
|
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
|
| 11 mm |
|
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
|
| 12 mm |
|
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
|
Table 5: Thermal stability (material behavior) - resistance threshold
MPL 10x10x4 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
|
OK |
| 40 °C | -2.2% |
3.03 kg / 6.68 lbs
3031.8 g / 29.7 N
|
OK |
| 60 °C | -4.4% |
2.96 kg / 6.53 lbs
2963.6 g / 29.1 N
|
|
| 80 °C | -6.6% |
2.90 kg / 6.38 lbs
2895.4 g / 28.4 N
|
|
| 100 °C | -28.8% |
2.21 kg / 4.87 lbs
2207.2 g / 21.7 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
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 lbs
5 067 Gs
|
1.20 kg / 2.65 lbs
1203 g / 11.8 N
|
N/A |
| 1 mm |
6.85 kg / 15.11 lbs
6 667 Gs
|
1.03 kg / 2.27 lbs
1028 g / 10.1 N
|
6.17 kg / 13.59 lbs
~0 Gs
|
| 2 mm |
5.68 kg / 12.52 lbs
6 070 Gs
|
0.85 kg / 1.88 lbs
852 g / 8.4 N
|
5.11 kg / 11.27 lbs
~0 Gs
|
| 3 mm |
4.60 kg / 10.14 lbs
5 463 Gs
|
0.69 kg / 1.52 lbs
690 g / 6.8 N
|
4.14 kg / 9.13 lbs
~0 Gs
|
| 5 mm |
2.87 kg / 6.32 lbs
4 313 Gs
|
0.43 kg / 0.95 lbs
430 g / 4.2 N
|
2.58 kg / 5.69 lbs
~0 Gs
|
| 10 mm |
0.78 kg / 1.73 lbs
2 254 Gs
|
0.12 kg / 0.26 lbs
117 g / 1.2 N
|
0.70 kg / 1.55 lbs
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 lbs
695 Gs
|
0.01 kg / 0.02 lbs
11 g / 0.1 N
|
0.07 kg / 0.15 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
76 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
46 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
30 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
21 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
15 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
11 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (implants) - warnings
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 |
| Mechanical watch | 20 Gs (2.0 mT) | 3.5 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) - collision effects
MPL 10x10x4 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
32.61 km/h
(9.06 m/s)
|
0.12 J | |
| 30 mm |
56.15 km/h
(15.60 m/s)
|
0.36 J | |
| 50 mm |
72.49 km/h
(20.14 m/s)
|
0.61 J | |
| 100 mm |
102.52 km/h
(28.48 m/s)
|
1.22 J |
Table 9: Anti-corrosion coating durability
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: Construction data (Pc)
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. Vertical hold
*Note: On a vertical surface, the magnet retains only a fraction of its nominal pull.
2. Plate thickness effect
*Thin metal sheet (e.g. computer case) significantly limits the holding force.
3. Temperature resistance
*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) = 0.46
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out also proposals
Strengths as well as weaknesses of Nd2Fe14B magnets.
Advantages
- They retain full power for almost ten years – the drop is just ~1% (based on simulations),
- They have excellent resistance to magnetism drop due to opposing magnetic fields,
- In other words, due to the reflective surface of silver, the element gains a professional look,
- Magnetic induction on the top side of the magnet is exceptional,
- 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 accurate machining and adapting to atypical applications,
- Wide application in high-tech industry – they are utilized in HDD drives, drive modules, medical equipment, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices
Weaknesses
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
- NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
- Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- characterized by even structure
- with zero gap (without impurities)
- during detachment in a direction perpendicular to the mounting surface
- at standard ambient temperature
Key elements affecting lifting force
- Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
H&S for magnets
Choking Hazard
Absolutely store magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.
Risk of cracking
Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.
Finger safety
Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!
Skin irritation risks
Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose coated magnets.
Impact on smartphones
A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.
Do not overheat magnets
Regular neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Safe distance
Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).
Safe operation
Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can react.
Implant safety
Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Dust explosion hazard
Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
