MPL 10x10x3 / N38 - lamellar magnet
lamellar magnet
Catalog no 020111
GTIN/EAN: 5906301811176
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
2.25 g
Magnetization Direction
↑ axial
Load capacity
2.32 kg / 22.77 N
Magnetic Induction
293.71 mT / 2937 Gs
Coating
[NiCuNi] Nickel
1.414 ZŁ with VAT / pcs + price for transport
1.150 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - MPL 10x10x3 / N38 - lamellar magnet
Specification / characteristics - MPL 10x10x3 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020111 |
| GTIN/EAN | 5906301811176 |
| 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 | 3 mm [±0,1 mm] |
| Weight | 2.25 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.32 kg / 22.77 N |
| Magnetic Induction ~ ? | 293.71 mT / 2937 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 - data
Presented data are the direct effect of a mathematical analysis. Values rely on algorithms for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Use these calculations as a reference point during assembly planning.
Table 1: Static force (pull vs distance) - interaction chart
MPL 10x10x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2936 Gs
293.6 mT
|
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
medium risk |
| 1 mm |
2513 Gs
251.3 mT
|
1.70 kg / 3.75 lbs
1700.6 g / 16.7 N
|
low risk |
| 2 mm |
2036 Gs
203.6 mT
|
1.12 kg / 2.46 lbs
1115.5 g / 10.9 N
|
low risk |
| 3 mm |
1594 Gs
159.4 mT
|
0.68 kg / 1.51 lbs
683.9 g / 6.7 N
|
low risk |
| 5 mm |
943 Gs
94.3 mT
|
0.24 kg / 0.53 lbs
239.3 g / 2.3 N
|
low risk |
| 10 mm |
285 Gs
28.5 mT
|
0.02 kg / 0.05 lbs
21.8 g / 0.2 N
|
low risk |
| 15 mm |
112 Gs
11.2 mT
|
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
|
low risk |
| 20 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 lbs
0.8 g / 0.0 N
|
low risk |
| 30 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Vertical load (wall)
MPL 10x10x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.46 kg / 1.02 lbs
464.0 g / 4.6 N
|
| 1 mm | Stal (~0.2) |
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
| 2 mm | Stal (~0.2) |
0.22 kg / 0.49 lbs
224.0 g / 2.2 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 lbs
136.0 g / 1.3 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 0.11 lbs
48.0 g / 0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 g / 0.0 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: Wall mounting (shearing) - vertical pull
MPL 10x10x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.70 kg / 1.53 lbs
696.0 g / 6.8 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.46 kg / 1.02 lbs
464.0 g / 4.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.23 kg / 0.51 lbs
232.0 g / 2.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.16 kg / 2.56 lbs
1160.0 g / 11.4 N
|
Table 4: Steel thickness (saturation) - power losses
MPL 10x10x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.23 kg / 0.51 lbs
232.0 g / 2.3 N
|
| 1 mm |
|
0.58 kg / 1.28 lbs
580.0 g / 5.7 N
|
| 2 mm |
|
1.16 kg / 2.56 lbs
1160.0 g / 11.4 N
|
| 3 mm |
|
1.74 kg / 3.84 lbs
1740.0 g / 17.1 N
|
| 5 mm |
|
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
| 10 mm |
|
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
| 11 mm |
|
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
| 12 mm |
|
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
Table 5: Working in heat (stability) - resistance threshold
MPL 10x10x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.32 kg / 5.11 lbs
2320.0 g / 22.8 N
|
OK |
| 40 °C | -2.2% |
2.27 kg / 5.00 lbs
2269.0 g / 22.3 N
|
OK |
| 60 °C | -4.4% |
2.22 kg / 4.89 lbs
2217.9 g / 21.8 N
|
|
| 80 °C | -6.6% |
2.17 kg / 4.78 lbs
2166.9 g / 21.3 N
|
|
| 100 °C | -28.8% |
1.65 kg / 3.64 lbs
1651.8 g / 16.2 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 10x10x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
5.31 kg / 11.71 lbs
4 526 Gs
|
0.80 kg / 1.76 lbs
797 g / 7.8 N
|
N/A |
| 1 mm |
4.63 kg / 10.20 lbs
5 480 Gs
|
0.69 kg / 1.53 lbs
694 g / 6.8 N
|
4.17 kg / 9.18 lbs
~0 Gs
|
| 2 mm |
3.89 kg / 8.59 lbs
5 027 Gs
|
0.58 kg / 1.29 lbs
584 g / 5.7 N
|
3.51 kg / 7.73 lbs
~0 Gs
|
| 3 mm |
3.19 kg / 7.03 lbs
4 549 Gs
|
0.48 kg / 1.05 lbs
478 g / 4.7 N
|
2.87 kg / 6.33 lbs
~0 Gs
|
| 5 mm |
2.01 kg / 4.44 lbs
3 613 Gs
|
0.30 kg / 0.67 lbs
302 g / 3.0 N
|
1.81 kg / 3.99 lbs
~0 Gs
|
| 10 mm |
0.55 kg / 1.21 lbs
1 886 Gs
|
0.08 kg / 0.18 lbs
82 g / 0.8 N
|
0.49 kg / 1.09 lbs
~0 Gs
|
| 20 mm |
0.05 kg / 0.11 lbs
569 Gs
|
0.01 kg / 0.02 lbs
7 g / 0.1 N
|
0.04 kg / 0.10 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
60 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
36 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
24 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
16 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
12 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
9 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 10x10x3 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 3.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Car key | 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: Collisions (cracking risk) - collision effects
MPL 10x10x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
32.57 km/h
(9.05 m/s)
|
0.09 J | |
| 30 mm |
56.09 km/h
(15.58 m/s)
|
0.27 J | |
| 50 mm |
72.41 km/h
(20.11 m/s)
|
0.46 J | |
| 100 mm |
102.41 km/h
(28.45 m/s)
|
0.91 J |
Table 9: Anti-corrosion coating durability
MPL 10x10x3 / 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 (Flux)
MPL 10x10x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 197 Mx | 32.0 µWb |
| Pc Coefficient | 0.36 | Low (Flat) |
Table 11: Submerged application
MPL 10x10x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.32 kg | Standard |
| Water (riverbed) |
2.66 kg
(+0.34 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical wall, the magnet holds only a fraction of its perpendicular strength.
2. Steel saturation
*Thin steel (e.g. computer case) significantly reduces the holding force.
3. Heat tolerance
*For N38 material, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.36
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Strengths as well as weaknesses of Nd2Fe14B magnets.
Benefits
- Their power is maintained, and after around 10 years it decreases only by ~1% (theoretically),
- They possess excellent resistance to magnetic field loss as a result of opposing magnetic fields,
- A magnet with a metallic gold surface has an effective appearance,
- Magnetic induction on the working part of the magnet remains impressive,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to versatility in shaping and the ability to customize to individual projects,
- Versatile presence in future technologies – they are utilized in computer drives, motor assemblies, medical equipment, also other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Weaknesses
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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 stable to moisture, when using outdoors
- We suggest cover - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated forms.
- Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Additionally, tiny parts 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
Magnetic strength at its maximum – what it depends on?
- on a base made of mild steel, optimally conducting the magnetic flux
- with a thickness of at least 10 mm
- characterized by smoothness
- without the slightest air gap between the magnet and steel
- under axial force vector (90-degree angle)
- at standard ambient temperature
Lifting capacity in real conditions – factors
- Distance (between the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be escaped to the other side.
- Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Respect the power
Be careful. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.
Medical interference
Individuals with a ICD must keep an large gap from magnets. The magnetism can interfere with the operation of the implant.
Heat sensitivity
Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Phone sensors
Remember: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a separation from your mobile, device, and navigation systems.
Flammability
Powder created during cutting of magnets is combustible. Do not drill into magnets unless you are an expert.
Hand protection
Big blocks can crush fingers instantly. Never place your hand between two attracting surfaces.
Safe distance
Very strong magnetic fields can erase data on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.
Choking Hazard
Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep out of reach of kids and pets.
Shattering risk
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Allergy Warning
Some people experience a sensitization to nickel, which is the standard coating for NdFeB magnets. Frequent touching might lead to an allergic reaction. It is best to use safety gloves.
