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 data - 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 magnet - report
The following information are the direct effect of a physical calculation. Values are based on models for the class Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Treat these data as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull vs gap) - characteristics
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
|
critical level |
| 1 mm |
2727 Gs
272.7 mT
|
24.98 kg / 55.08 pounds
24982.7 g / 245.1 N
|
critical level |
| 2 mm |
2613 Gs
261.3 mT
|
22.94 kg / 50.57 pounds
22939.0 g / 225.0 N
|
critical level |
| 3 mm |
2491 Gs
249.1 mT
|
20.84 kg / 45.95 pounds
20841.0 g / 204.4 N
|
critical level |
| 5 mm |
2232 Gs
223.2 mT
|
16.73 kg / 36.88 pounds
16730.5 g / 164.1 N
|
critical level |
| 10 mm |
1600 Gs
160.0 mT
|
8.60 kg / 18.96 pounds
8600.7 g / 84.4 N
|
strong |
| 15 mm |
1102 Gs
110.2 mT
|
4.08 kg / 9.00 pounds
4082.9 g / 40.1 N
|
strong |
| 20 mm |
757 Gs
75.7 mT
|
1.93 kg / 4.25 pounds
1925.7 g / 18.9 N
|
weak grip |
| 30 mm |
376 Gs
37.6 mT
|
0.48 kg / 1.05 pounds
475.7 g / 4.7 N
|
weak grip |
| 50 mm |
122 Gs
12.2 mT
|
0.05 kg / 0.11 pounds
49.9 g / 0.5 N
|
weak grip |
Table 2: Sliding 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 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: Wall mounting (sliding) - 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 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 (substrate influence) - power losses
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: Working in heat (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 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 collision
MPL 35x35x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (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: Hazards (electronics) - 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 |
| Car key | 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) - 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 (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. Shear force
*Note: On a vertical surface, the magnet retains merely ~20% of its perpendicular strength.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) drastically weakens the holding force.
3. Power loss vs temp
*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) = 0.35
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 |
Other products
Pros and cons of Nd2Fe14B magnets.
Pros
- They do not lose power, even over approximately ten years – the decrease in power is only ~1% (according to tests),
- Neodymium magnets are characterized by highly resistant to demagnetization caused by external magnetic fields,
- A magnet with a metallic silver surface looks better,
- Magnetic induction on the top side of the magnet remains very high,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to the option of flexible forming and customization to unique projects, magnetic components can be manufactured in a variety of shapes and sizes, which expands the range of possible applications,
- Key role in modern technologies – they serve a role in HDD drives, brushless drives, precision medical tools, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in miniature devices
Limitations
- Susceptibility to cracking 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 increases their durability
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- We suggest a housing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complex forms.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- with a cross-section of at least 10 mm
- with an ground touching surface
- with total lack of distance (without impurities)
- under perpendicular force vector (90-degree angle)
- in temp. approx. 20°C
Determinants of practical lifting force of a magnet
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of nominal force).
- Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
- Plate material – mild steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
- Base smoothness – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.
H&S for magnets
Metal Allergy
Studies show that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, prevent direct skin contact or choose versions in plastic housing.
Fire warning
Powder created during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
GPS and phone interference
Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can ruin the internal compass in your phone.
Health Danger
People with a heart stimulator must keep an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.
Safe operation
Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their power.
Material brittleness
NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets will cause them shattering into shards.
Safe distance
Very strong magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Choking Hazard
Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store away from children and animals.
Power loss in heat
Keep cool. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).
Bone fractures
Large magnets can smash fingers instantly. Under no circumstances place your hand between two strong magnets.
