MPL 10x10x10 / N38 - lamellar magnet
lamellar magnet
Catalog no 020110
GTIN/EAN: 5906301811169
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
7.5 g
Magnetization Direction
↑ axial
Load capacity
3.84 kg / 37.71 N
Magnetic Induction
539.91 mT / 5399 Gs
Coating
[NiCuNi] Nickel
5.29 ZŁ with VAT / pcs + price for transport
4.30 ZŁ net + 23% VAT / pcs
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Detailed specification - MPL 10x10x10 / N38 - lamellar magnet
Specification / characteristics - MPL 10x10x10 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020110 |
| GTIN/EAN | 5906301811169 |
| 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 | 10 mm [±0,1 mm] |
| Weight | 7.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.84 kg / 37.71 N |
| Magnetic Induction ~ ? | 539.91 mT / 5399 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 modeling of the assembly - report
The following values are the outcome of a mathematical calculation. Results were calculated on models for the material Nd2Fe14B. Operational parameters may deviate from the simulation results. Use these calculations as a supplementary guide when designing systems.
Table 1: Static pull force (force vs gap) - interaction chart
MPL 10x10x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5395 Gs
539.5 mT
|
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
warning |
| 1 mm |
4423 Gs
442.3 mT
|
2.58 kg / 5.69 pounds
2580.1 g / 25.3 N
|
warning |
| 2 mm |
3516 Gs
351.6 mT
|
1.63 kg / 3.60 pounds
1631.0 g / 16.0 N
|
low risk |
| 3 mm |
2751 Gs
275.1 mT
|
1.00 kg / 2.20 pounds
998.0 g / 9.8 N
|
low risk |
| 5 mm |
1671 Gs
167.1 mT
|
0.37 kg / 0.81 pounds
368.5 g / 3.6 N
|
low risk |
| 10 mm |
562 Gs
56.2 mT
|
0.04 kg / 0.09 pounds
41.7 g / 0.4 N
|
low risk |
| 15 mm |
244 Gs
24.4 mT
|
0.01 kg / 0.02 pounds
7.8 g / 0.1 N
|
low risk |
| 20 mm |
126 Gs
12.6 mT
|
0.00 kg / 0.00 pounds
2.1 g / 0.0 N
|
low risk |
| 30 mm |
46 Gs
4.6 mT
|
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
|
low risk |
| 50 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Vertical force (wall)
MPL 10x10x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.77 kg / 1.69 pounds
768.0 g / 7.5 N
|
| 1 mm | Stal (~0.2) |
0.52 kg / 1.14 pounds
516.0 g / 5.1 N
|
| 2 mm | Stal (~0.2) |
0.33 kg / 0.72 pounds
326.0 g / 3.2 N
|
| 3 mm | Stal (~0.2) |
0.20 kg / 0.44 pounds
200.0 g / 2.0 N
|
| 5 mm | Stal (~0.2) |
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
8.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 10x10x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
1.15 kg / 2.54 pounds
1152.0 g / 11.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.77 kg / 1.69 pounds
768.0 g / 7.5 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.38 kg / 0.85 pounds
384.0 g / 3.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 10x10x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.38 kg / 0.85 pounds
384.0 g / 3.8 N
|
| 1 mm |
|
0.96 kg / 2.12 pounds
960.0 g / 9.4 N
|
| 2 mm |
|
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
|
| 3 mm |
|
2.88 kg / 6.35 pounds
2880.0 g / 28.3 N
|
| 5 mm |
|
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
| 10 mm |
|
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
| 11 mm |
|
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
| 12 mm |
|
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
Table 5: Working in heat (stability) - thermal limit
MPL 10x10x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.84 kg / 8.47 pounds
3840.0 g / 37.7 N
|
OK |
| 40 °C | -2.2% |
3.76 kg / 8.28 pounds
3755.5 g / 36.8 N
|
OK |
| 60 °C | -4.4% |
3.67 kg / 8.09 pounds
3671.0 g / 36.0 N
|
OK |
| 80 °C | -6.6% |
3.59 kg / 7.91 pounds
3586.6 g / 35.2 N
|
|
| 100 °C | -28.8% |
2.73 kg / 6.03 pounds
2734.1 g / 26.8 N
|
Table 6: Two magnets (repulsion) - forces in the system
MPL 10x10x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
17.95 kg / 39.56 pounds
5 957 Gs
|
2.69 kg / 5.93 pounds
2692 g / 26.4 N
|
N/A |
| 1 mm |
14.86 kg / 32.77 pounds
9 821 Gs
|
2.23 kg / 4.92 pounds
2230 g / 21.9 N
|
13.38 kg / 29.49 pounds
~0 Gs
|
| 2 mm |
12.06 kg / 26.58 pounds
8 845 Gs
|
1.81 kg / 3.99 pounds
1809 g / 17.7 N
|
10.85 kg / 23.93 pounds
~0 Gs
|
| 3 mm |
9.64 kg / 21.26 pounds
7 909 Gs
|
1.45 kg / 3.19 pounds
1446 g / 14.2 N
|
8.68 kg / 19.13 pounds
~0 Gs
|
| 5 mm |
5.98 kg / 13.18 pounds
6 228 Gs
|
0.90 kg / 1.98 pounds
897 g / 8.8 N
|
5.38 kg / 11.86 pounds
~0 Gs
|
| 10 mm |
1.72 kg / 3.80 pounds
3 343 Gs
|
0.26 kg / 0.57 pounds
258 g / 2.5 N
|
1.55 kg / 3.42 pounds
~0 Gs
|
| 20 mm |
0.20 kg / 0.43 pounds
1 125 Gs
|
0.03 kg / 0.06 pounds
29 g / 0.3 N
|
0.18 kg / 0.39 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.01 pounds
146 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
92 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
62 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
43 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
32 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
24 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Safety (HSE) (implants) - warnings
MPL 10x10x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 7.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 5.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 4.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 3.5 cm |
| Remote | 50 Gs (5.0 mT) | 3.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Collisions (cracking risk) - warning
MPL 10x10x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
22.97 km/h
(6.38 m/s)
|
0.15 J | |
| 30 mm |
39.53 km/h
(10.98 m/s)
|
0.45 J | |
| 50 mm |
51.03 km/h
(14.17 m/s)
|
0.75 J | |
| 100 mm |
72.16 km/h
(20.05 m/s)
|
1.51 J |
Table 9: Coating parameters (durability)
MPL 10x10x10 / 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 10x10x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 5 504 Mx | 55.0 µWb |
| Pc Coefficient | 0.84 | High (Stable) |
Table 11: Physics of underwater searching
MPL 10x10x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.84 kg | Standard |
| Water (riverbed) |
4.40 kg
(+0.56 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Warning: On a vertical wall, the magnet holds merely ~20% of its perpendicular strength.
2. Steel thickness impact
*Thin steel (e.g. computer case) significantly limits the holding force.
3. Heat tolerance
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.84
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Strengths and weaknesses of Nd2Fe14B magnets.
Pros
- They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
- Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by magnetic disturbances,
- In other words, due to the smooth surface of silver, the element is aesthetically pleasing,
- The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Considering the option of flexible forming and adaptation to specialized projects, neodymium magnets can be manufactured in a broad palette of geometric configurations, which increases their versatility,
- Universal use in modern industrial fields – they are commonly used in HDD drives, drive modules, medical equipment, also other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Cons
- At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We recommend casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these devices can be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- on a plate made of structural steel, perfectly concentrating the magnetic field
- possessing a thickness of min. 10 mm to ensure full flux closure
- with a plane free of scratches
- with zero gap (no impurities)
- during pulling in a direction perpendicular to the plane
- at standard ambient temperature
What influences lifting capacity in practice
- Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Plate material – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and holding force.
- Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces weaken the grip.
- Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the lifting capacity.
Precautions when working with NdFeB magnets
Keep away from computers
Intense magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
Allergic reactions
Certain individuals suffer from a contact allergy to nickel, which is the common plating for NdFeB magnets. Extended handling can result in skin redness. It is best to wear safety gloves.
Medical implants
Patients with a heart stimulator must keep an large gap from magnets. The magnetic field can interfere with the operation of the implant.
Crushing force
Large magnets can smash fingers in a fraction of a second. Do not put your hand between two strong magnets.
Respect the power
Handle magnets consciously. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their power.
Combustion hazard
Powder created during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.
Material brittleness
Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.
GPS Danger
Remember: neodymium magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, tablet, and GPS.
Heat sensitivity
Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Keep away from children
Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are tragic.
