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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Product card - 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 simulation of the assembly - data
The following data constitute the outcome of a engineering analysis. Results rely on algorithms for the material Nd2Fe14B. Real-world parameters may deviate from the simulation results. Please consider these data as a supplementary guide when designing systems.
Table 1: Static force (force vs distance) - power drop
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: Shear capacity (vertical surface)
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 (sliding) - 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 (substrate influence) - 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: Thermal resistance (material behavior) - 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) | Sliding Force (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: Protective zones (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 |
| Timepiece | 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 (kinetic energy) - warning
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: Coating parameters (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 (Pc)
MPL 10x10x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 197 Mx | 32.0 µWb |
| Pc Coefficient | 0.36 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
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. Wall mount (shear)
*Note: On a vertical surface, the magnet retains merely ~20% of its nominal pull.
2. Efficiency vs thickness
*Thin steel (e.g. computer case) severely weakens the holding force.
3. Thermal stability
*For N38 grade, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.36
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.
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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Strengths and weaknesses of Nd2Fe14B magnets.
Advantages
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
- They retain their magnetic properties even under close interference source,
- In other words, due to the smooth finish of silver, the element looks attractive,
- Magnetic induction on the top side of the magnet is strong,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures reaching 230°C and above...
- Thanks to freedom in shaping and the ability to customize to complex applications,
- Fundamental importance in high-tech industry – they are utilized in hard drives, electric drive systems, diagnostic systems, and complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in miniature devices
Disadvantages
- At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose their power 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- We recommend casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated forms.
- Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can complicate diagnosis medical when they are in the body.
- With large orders the cost of neodymium magnets is economically unviable,
Lifting parameters
Best holding force of the magnet in ideal parameters – what contributes to it?
- using a sheet made of mild steel, functioning as a magnetic yoke
- whose thickness equals approx. 10 mm
- with a surface free of scratches
- under conditions of gap-free contact (surface-to-surface)
- for force applied at a right angle (pull-off, not shear)
- at room temperature
Lifting capacity in real conditions – factors
- Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick steel causes magnetic saturation, causing part of the power to be escaped into the air.
- Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal reduce efficiency.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.
H&S for magnets
Demagnetization risk
Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.
Electronic devices
Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.
Health Danger
People with a ICD should keep an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.
GPS and phone interference
Be aware: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, device, and GPS.
Powerful field
Exercise caution. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can move away.
Fire risk
Powder generated during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Bodily injuries
Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
Keep away from children
Neodymium magnets are not toys. Accidental ingestion of several magnets may result in them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.
Warning for allergy sufferers
Studies show that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and opt for versions in plastic housing.
Magnet fragility
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
