MPL 35x35x10 / N38 - lamellar magnet
lamellar magnet
Catalog no 020144
GTIN/EAN: 5906301811503
length
35 mm [±0,1 mm]
Width
35 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
91.88 g
Magnetization Direction
↑ axial
Load capacity
26.88 kg / 263.71 N
Magnetic Induction
282.90 mT / 2829 Gs
Coating
[NiCuNi] Nickel
35.10 ZŁ with VAT / pcs + price for transport
28.54 ZŁ net + 23% VAT / pcs
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Technical details - MPL 35x35x10 / N38 - lamellar magnet
Specification / characteristics - MPL 35x35x10 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020144 |
| GTIN/EAN | 5906301811503 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 35 mm [±0,1 mm] |
| Width | 35 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 91.88 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 26.88 kg / 263.71 N |
| Magnetic Induction ~ ? | 282.90 mT / 2829 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 simulation of the assembly - report
These values are the result of a physical calculation. Values are based on algorithms for the material Nd2Fe14B. Real-world performance might slightly differ from theoretical values. Treat these data as a preliminary roadmap when designing systems.
Table 1: Static pull force (pull vs gap) - power drop
MPL 35x35x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2829 Gs
282.9 mT
|
26.88 kg / 59.26 LBS
26880.0 g / 263.7 N
|
crushing |
| 1 mm |
2727 Gs
272.7 mT
|
24.98 kg / 55.08 LBS
24982.7 g / 245.1 N
|
crushing |
| 2 mm |
2613 Gs
261.3 mT
|
22.94 kg / 50.57 LBS
22939.0 g / 225.0 N
|
crushing |
| 3 mm |
2491 Gs
249.1 mT
|
20.84 kg / 45.95 LBS
20841.0 g / 204.4 N
|
crushing |
| 5 mm |
2232 Gs
223.2 mT
|
16.73 kg / 36.88 LBS
16730.5 g / 164.1 N
|
crushing |
| 10 mm |
1600 Gs
160.0 mT
|
8.60 kg / 18.96 LBS
8600.7 g / 84.4 N
|
warning |
| 15 mm |
1102 Gs
110.2 mT
|
4.08 kg / 9.00 LBS
4082.9 g / 40.1 N
|
warning |
| 20 mm |
757 Gs
75.7 mT
|
1.93 kg / 4.25 LBS
1925.7 g / 18.9 N
|
safe |
| 30 mm |
376 Gs
37.6 mT
|
0.48 kg / 1.05 LBS
475.7 g / 4.7 N
|
safe |
| 50 mm |
122 Gs
12.2 mT
|
0.05 kg / 0.11 LBS
49.9 g / 0.5 N
|
safe |
Table 2: Shear hold (vertical surface)
MPL 35x35x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
5.38 kg / 11.85 LBS
5376.0 g / 52.7 N
|
| 1 mm | Stal (~0.2) |
5.00 kg / 11.01 LBS
4996.0 g / 49.0 N
|
| 2 mm | Stal (~0.2) |
4.59 kg / 10.11 LBS
4588.0 g / 45.0 N
|
| 3 mm | Stal (~0.2) |
4.17 kg / 9.19 LBS
4168.0 g / 40.9 N
|
| 5 mm | Stal (~0.2) |
3.35 kg / 7.38 LBS
3346.0 g / 32.8 N
|
| 10 mm | Stal (~0.2) |
1.72 kg / 3.79 LBS
1720.0 g / 16.9 N
|
| 15 mm | Stal (~0.2) |
0.82 kg / 1.80 LBS
816.0 g / 8.0 N
|
| 20 mm | Stal (~0.2) |
0.39 kg / 0.85 LBS
386.0 g / 3.8 N
|
| 30 mm | Stal (~0.2) |
0.10 kg / 0.21 LBS
96.0 g / 0.9 N
|
| 50 mm | Stal (~0.2) |
0.01 kg / 0.02 LBS
10.0 g / 0.1 N
|
Table 3: Vertical assembly (shearing) - vertical pull
MPL 35x35x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
8.06 kg / 17.78 LBS
8064.0 g / 79.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
5.38 kg / 11.85 LBS
5376.0 g / 52.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
2.69 kg / 5.93 LBS
2688.0 g / 26.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
13.44 kg / 29.63 LBS
13440.0 g / 131.8 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 35x35x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
1.34 kg / 2.96 LBS
1344.0 g / 13.2 N
|
| 1 mm |
|
3.36 kg / 7.41 LBS
3360.0 g / 33.0 N
|
| 2 mm |
|
6.72 kg / 14.82 LBS
6720.0 g / 65.9 N
|
| 3 mm |
|
10.08 kg / 22.22 LBS
10080.0 g / 98.9 N
|
| 5 mm |
|
16.80 kg / 37.04 LBS
16800.0 g / 164.8 N
|
| 10 mm |
|
26.88 kg / 59.26 LBS
26880.0 g / 263.7 N
|
| 11 mm |
|
26.88 kg / 59.26 LBS
26880.0 g / 263.7 N
|
| 12 mm |
|
26.88 kg / 59.26 LBS
26880.0 g / 263.7 N
|
Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 35x35x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
26.88 kg / 59.26 LBS
26880.0 g / 263.7 N
|
OK |
| 40 °C | -2.2% |
26.29 kg / 57.96 LBS
26288.6 g / 257.9 N
|
OK |
| 60 °C | -4.4% |
25.70 kg / 56.65 LBS
25697.3 g / 252.1 N
|
|
| 80 °C | -6.6% |
25.11 kg / 55.35 LBS
25105.9 g / 246.3 N
|
|
| 100 °C | -28.8% |
19.14 kg / 42.19 LBS
19138.6 g / 187.7 N
|
Table 6: Two magnets (repulsion) - field collision
MPL 35x35x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
60.43 kg / 133.22 LBS
4 428 Gs
|
9.06 kg / 19.98 LBS
9064 g / 88.9 N
|
N/A |
| 1 mm |
58.36 kg / 128.67 LBS
5 560 Gs
|
8.75 kg / 19.30 LBS
8754 g / 85.9 N
|
52.53 kg / 115.80 LBS
~0 Gs
|
| 2 mm |
56.16 kg / 123.82 LBS
5 454 Gs
|
8.42 kg / 18.57 LBS
8424 g / 82.6 N
|
50.55 kg / 111.44 LBS
~0 Gs
|
| 3 mm |
53.89 kg / 118.81 LBS
5 343 Gs
|
8.08 kg / 17.82 LBS
8084 g / 79.3 N
|
48.50 kg / 106.93 LBS
~0 Gs
|
| 5 mm |
49.22 kg / 108.50 LBS
5 106 Gs
|
7.38 kg / 16.28 LBS
7382 g / 72.4 N
|
44.29 kg / 97.65 LBS
~0 Gs
|
| 10 mm |
37.61 kg / 82.92 LBS
4 463 Gs
|
5.64 kg / 12.44 LBS
5642 g / 55.3 N
|
33.85 kg / 74.63 LBS
~0 Gs
|
| 20 mm |
19.33 kg / 42.63 LBS
3 200 Gs
|
2.90 kg / 6.39 LBS
2900 g / 28.5 N
|
17.40 kg / 38.36 LBS
~0 Gs
|
| 50 mm |
2.10 kg / 4.64 LBS
1 056 Gs
|
0.32 kg / 0.70 LBS
316 g / 3.1 N
|
1.89 kg / 4.18 LBS
~0 Gs
|
| 60 mm |
1.07 kg / 2.36 LBS
753 Gs
|
0.16 kg / 0.35 LBS
160 g / 1.6 N
|
0.96 kg / 2.12 LBS
~0 Gs
|
| 70 mm |
0.57 kg / 1.26 LBS
550 Gs
|
0.09 kg / 0.19 LBS
86 g / 0.8 N
|
0.51 kg / 1.13 LBS
~0 Gs
|
| 80 mm |
0.32 kg / 0.70 LBS
411 Gs
|
0.05 kg / 0.11 LBS
48 g / 0.5 N
|
0.29 kg / 0.63 LBS
~0 Gs
|
| 90 mm |
0.19 kg / 0.41 LBS
313 Gs
|
0.03 kg / 0.06 LBS
28 g / 0.3 N
|
0.17 kg / 0.37 LBS
~0 Gs
|
| 100 mm |
0.11 kg / 0.25 LBS
244 Gs
|
0.02 kg / 0.04 LBS
17 g / 0.2 N
|
0.10 kg / 0.22 LBS
~0 Gs
|
Table 7: Protective zones (implants) - warnings
MPL 35x35x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 16.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 13.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 10.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 8.0 cm |
| Remote | 50 Gs (5.0 mT) | 7.5 cm |
| Payment card | 400 Gs (40.0 mT) | 3.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 2.5 cm |
Table 8: Impact energy (kinetic energy) - collision effects
MPL 35x35x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
20.41 km/h
(5.67 m/s)
|
1.48 J | |
| 30 mm |
30.21 km/h
(8.39 m/s)
|
3.23 J | |
| 50 mm |
38.62 km/h
(10.73 m/s)
|
5.29 J | |
| 100 mm |
54.55 km/h
(15.15 m/s)
|
10.55 J |
Table 9: Surface protection spec
MPL 35x35x10 / 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 35x35x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 38 021 Mx | 380.2 µWb |
| Pc Coefficient | 0.35 | Low (Flat) |
Table 11: Submerged application
MPL 35x35x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 26.88 kg | Standard |
| Water (riverbed) |
30.78 kg
(+3.90 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its perpendicular strength.
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) = 0.35
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.
Material specification
| 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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Pros and cons of Nd2Fe14B magnets.
Pros
- They do not lose power, even during approximately ten years – the reduction in lifting capacity is only ~1% (theoretically),
- Neodymium magnets prove to be extremely resistant to demagnetization caused by external interference,
- In other words, due to the glossy layer of gold, the element gains a professional look,
- They feature 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...
- Considering the possibility of flexible shaping and adaptation to specialized solutions, neodymium magnets can be produced in a broad palette of geometric configurations, which increases their versatility,
- Wide application in future technologies – they are used in magnetic memories, drive modules, precision medical tools, as well as industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of producing nuts in the magnet and complicated shapes - preferred is cover - magnetic holder.
- Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
- With budget limitations the cost of neodymium magnets can be a barrier,
Holding force characteristics
Highest magnetic holding force – what it depends on?
- on a block made of mild steel, optimally conducting the magnetic field
- with a cross-section minimum 10 mm
- with an ideally smooth touching surface
- with total lack of distance (without coatings)
- under vertical force direction (90-degree angle)
- in stable room temperature
Magnet lifting force in use – key factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin sheet does not accept the full field, causing part of the power to be wasted into the air.
- Steel grade – ideal substrate is pure iron steel. Cast iron may attract less.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, however under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.
Precautions when working with NdFeB magnets
Phone sensors
An intense magnetic field disrupts the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.
Threat to electronics
Avoid bringing magnets close to a purse, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Sensitization to coating
Studies show that nickel (standard magnet coating) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands and select coated magnets.
Fire warning
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
No play value
Product intended for adults. Tiny parts pose a choking risk, leading to severe trauma. Store away from children and animals.
Conscious usage
Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Medical implants
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.
Shattering risk
Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.
Crushing force
Big blocks can crush fingers in a fraction of a second. Never place your hand between two strong magnets.
Power loss in heat
Do not overheat. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
