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
bulk discounts:
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Technical specification - 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 modeling of the magnet - technical parameters
Presented data constitute the result of a mathematical analysis. Values rely on models for the material Nd2Fe14B. Operational conditions may differ. Please consider these data as a reference point for designers.
Table 1: Static pull force (force 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 pounds
26880.0 g / 263.7 N
|
dangerous! |
| 1 mm |
2727 Gs
272.7 mT
|
24.98 kg / 55.08 pounds
24982.7 g / 245.1 N
|
dangerous! |
| 2 mm |
2613 Gs
261.3 mT
|
22.94 kg / 50.57 pounds
22939.0 g / 225.0 N
|
dangerous! |
| 3 mm |
2491 Gs
249.1 mT
|
20.84 kg / 45.95 pounds
20841.0 g / 204.4 N
|
dangerous! |
| 5 mm |
2232 Gs
223.2 mT
|
16.73 kg / 36.88 pounds
16730.5 g / 164.1 N
|
dangerous! |
| 10 mm |
1600 Gs
160.0 mT
|
8.60 kg / 18.96 pounds
8600.7 g / 84.4 N
|
warning |
| 15 mm |
1102 Gs
110.2 mT
|
4.08 kg / 9.00 pounds
4082.9 g / 40.1 N
|
warning |
| 20 mm |
757 Gs
75.7 mT
|
1.93 kg / 4.25 pounds
1925.7 g / 18.9 N
|
low risk |
| 30 mm |
376 Gs
37.6 mT
|
0.48 kg / 1.05 pounds
475.7 g / 4.7 N
|
low risk |
| 50 mm |
122 Gs
12.2 mT
|
0.05 kg / 0.11 pounds
49.9 g / 0.5 N
|
low risk |
Table 2: Vertical hold (wall)
MPL 35x35x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
5.38 kg / 11.85 pounds
5376.0 g / 52.7 N
|
| 1 mm | Stal (~0.2) |
5.00 kg / 11.01 pounds
4996.0 g / 49.0 N
|
| 2 mm | Stal (~0.2) |
4.59 kg / 10.11 pounds
4588.0 g / 45.0 N
|
| 3 mm | Stal (~0.2) |
4.17 kg / 9.19 pounds
4168.0 g / 40.9 N
|
| 5 mm | Stal (~0.2) |
3.35 kg / 7.38 pounds
3346.0 g / 32.8 N
|
| 10 mm | Stal (~0.2) |
1.72 kg / 3.79 pounds
1720.0 g / 16.9 N
|
| 15 mm | Stal (~0.2) |
0.82 kg / 1.80 pounds
816.0 g / 8.0 N
|
| 20 mm | Stal (~0.2) |
0.39 kg / 0.85 pounds
386.0 g / 3.8 N
|
| 30 mm | Stal (~0.2) |
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
|
| 50 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
10.0 g / 0.1 N
|
Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
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 pounds
8064.0 g / 79.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
5.38 kg / 11.85 pounds
5376.0 g / 52.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
2.69 kg / 5.93 pounds
2688.0 g / 26.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
13.44 kg / 29.63 pounds
13440.0 g / 131.8 N
|
Table 4: Steel thickness (saturation) - 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 pounds
1344.0 g / 13.2 N
|
| 1 mm |
|
3.36 kg / 7.41 pounds
3360.0 g / 33.0 N
|
| 2 mm |
|
6.72 kg / 14.82 pounds
6720.0 g / 65.9 N
|
| 3 mm |
|
10.08 kg / 22.22 pounds
10080.0 g / 98.9 N
|
| 5 mm |
|
16.80 kg / 37.04 pounds
16800.0 g / 164.8 N
|
| 10 mm |
|
26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
|
| 11 mm |
|
26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
|
| 12 mm |
|
26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MPL 35x35x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
|
OK |
| 40 °C | -2.2% |
26.29 kg / 57.96 pounds
26288.6 g / 257.9 N
|
OK |
| 60 °C | -4.4% |
25.70 kg / 56.65 pounds
25697.3 g / 252.1 N
|
|
| 80 °C | -6.6% |
25.11 kg / 55.35 pounds
25105.9 g / 246.3 N
|
|
| 100 °C | -28.8% |
19.14 kg / 42.19 pounds
19138.6 g / 187.7 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 35x35x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
60.43 kg / 133.22 pounds
4 428 Gs
|
9.06 kg / 19.98 pounds
9064 g / 88.9 N
|
N/A |
| 1 mm |
58.36 kg / 128.67 pounds
5 560 Gs
|
8.75 kg / 19.30 pounds
8754 g / 85.9 N
|
52.53 kg / 115.80 pounds
~0 Gs
|
| 2 mm |
56.16 kg / 123.82 pounds
5 454 Gs
|
8.42 kg / 18.57 pounds
8424 g / 82.6 N
|
50.55 kg / 111.44 pounds
~0 Gs
|
| 3 mm |
53.89 kg / 118.81 pounds
5 343 Gs
|
8.08 kg / 17.82 pounds
8084 g / 79.3 N
|
48.50 kg / 106.93 pounds
~0 Gs
|
| 5 mm |
49.22 kg / 108.50 pounds
5 106 Gs
|
7.38 kg / 16.28 pounds
7382 g / 72.4 N
|
44.29 kg / 97.65 pounds
~0 Gs
|
| 10 mm |
37.61 kg / 82.92 pounds
4 463 Gs
|
5.64 kg / 12.44 pounds
5642 g / 55.3 N
|
33.85 kg / 74.63 pounds
~0 Gs
|
| 20 mm |
19.33 kg / 42.63 pounds
3 200 Gs
|
2.90 kg / 6.39 pounds
2900 g / 28.5 N
|
17.40 kg / 38.36 pounds
~0 Gs
|
| 50 mm |
2.10 kg / 4.64 pounds
1 056 Gs
|
0.32 kg / 0.70 pounds
316 g / 3.1 N
|
1.89 kg / 4.18 pounds
~0 Gs
|
| 60 mm |
1.07 kg / 2.36 pounds
753 Gs
|
0.16 kg / 0.35 pounds
160 g / 1.6 N
|
0.96 kg / 2.12 pounds
~0 Gs
|
| 70 mm |
0.57 kg / 1.26 pounds
550 Gs
|
0.09 kg / 0.19 pounds
86 g / 0.8 N
|
0.51 kg / 1.13 pounds
~0 Gs
|
| 80 mm |
0.32 kg / 0.70 pounds
411 Gs
|
0.05 kg / 0.11 pounds
48 g / 0.5 N
|
0.29 kg / 0.63 pounds
~0 Gs
|
| 90 mm |
0.19 kg / 0.41 pounds
313 Gs
|
0.03 kg / 0.06 pounds
28 g / 0.3 N
|
0.17 kg / 0.37 pounds
~0 Gs
|
| 100 mm |
0.11 kg / 0.25 pounds
244 Gs
|
0.02 kg / 0.04 pounds
17 g / 0.2 N
|
0.10 kg / 0.22 pounds
~0 Gs
|
Table 7: Safety (HSE) (implants) - precautionary measures
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 |
| Timepiece | 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: Collisions (kinetic energy) - warning
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: Anti-corrosion coating durability
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 (Flux)
MPL 35x35x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 38 021 Mx | 380.2 µWb |
| Pc Coefficient | 0.35 | Low (Flat) |
Table 11: Physics of underwater searching
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)
*Note: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.
2. Plate thickness effect
*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.
3. Temperature resistance
*For standard magnets, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Strengths and weaknesses of Nd2Fe14B magnets.
Pros
- They do not lose power, even after approximately 10 years – the reduction in lifting capacity is only ~1% (according to tests),
- They maintain their magnetic properties even under external field action,
- A magnet with a shiny silver surface is more attractive,
- Magnetic induction on the working layer of the magnet turns out to be maximum,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Thanks to flexibility in constructing and the ability to modify to unusual requirements,
- Fundamental importance in future technologies – they are commonly used in computer drives, electric drive systems, medical equipment, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions
Disadvantages
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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 very resistant to heat
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating nuts and complicated forms in magnets, we propose using cover - magnetic mount.
- Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products can be problematic in diagnostics medical in case of swallowing.
- Due to complex production process, their price exceeds standard values,
Lifting parameters
Maximum lifting force for a neodymium magnet – what contributes to it?
- using a plate made of low-carbon steel, acting as a ideal flux conductor
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with a surface cleaned and smooth
- with total lack of distance (without paint)
- for force acting at a right angle (in the magnet axis)
- in stable room temperature
What influences lifting capacity in practice
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Metal type – not every steel reacts the same. Alloy additives worsen the attraction effect.
- Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
- Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
H&S for magnets
Allergic reactions
Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, prevent touching magnets with bare hands or opt for encased magnets.
Protective goggles
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Swallowing risk
NdFeB magnets are not intended for children. Eating multiple magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and necessitates urgent medical intervention.
Pinching danger
Mind your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!
Operating temperature
Avoid heat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Conscious usage
Exercise caution. Neodymium magnets act from a distance and snap with huge force, often quicker than you can react.
Protect data
Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).
Flammability
Powder generated during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Phone sensors
Remember: rare earth magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your phone, tablet, and GPS.
Medical implants
For implant holders: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.
