MPL 11x11x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020116
GTIN/EAN: 5906301811220
length
11 mm [±0,1 mm]
Width
11 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.91 g
Magnetization Direction
↑ axial
Load capacity
0.43 kg / 4.24 N
Magnetic Induction
100.10 mT / 1001 Gs
Coating
[NiCuNi] Nickel
0.873 ZŁ with VAT / pcs + price for transport
0.710 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - MPL 11x11x1 / N38 - lamellar magnet
Specification / characteristics - MPL 11x11x1 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020116 |
| GTIN/EAN | 5906301811220 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 11 mm [±0,1 mm] |
| Width | 11 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.91 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.43 kg / 4.24 N |
| Magnetic Induction ~ ? | 100.10 mT / 1001 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 |
Technical modeling of the assembly - data
The following data are the result of a mathematical analysis. Values were calculated on algorithms for the class Nd2Fe14B. Real-world parameters might slightly deviate from the simulation results. Please consider these calculations as a preliminary roadmap during assembly planning.
Table 1: Static force (force vs gap) - interaction chart
MPL 11x11x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1001 Gs
100.1 mT
|
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
weak grip |
| 1 mm |
925 Gs
92.5 mT
|
0.37 kg / 0.81 pounds
367.7 g / 3.6 N
|
weak grip |
| 2 mm |
800 Gs
80.0 mT
|
0.27 kg / 0.61 pounds
274.9 g / 2.7 N
|
weak grip |
| 3 mm |
659 Gs
65.9 mT
|
0.19 kg / 0.41 pounds
186.5 g / 1.8 N
|
weak grip |
| 5 mm |
415 Gs
41.5 mT
|
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
|
weak grip |
| 10 mm |
130 Gs
13.0 mT
|
0.01 kg / 0.02 pounds
7.3 g / 0.1 N
|
weak grip |
| 15 mm |
51 Gs
5.1 mT
|
0.00 kg / 0.00 pounds
1.1 g / 0.0 N
|
weak grip |
| 20 mm |
24 Gs
2.4 mT
|
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
|
weak grip |
| 30 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Vertical load (wall)
MPL 11x11x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.09 kg / 0.19 pounds
86.0 g / 0.8 N
|
| 1 mm | Stal (~0.2) |
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
|
| 2 mm | Stal (~0.2) |
0.05 kg / 0.12 pounds
54.0 g / 0.5 N
|
| 3 mm | Stal (~0.2) |
0.04 kg / 0.08 pounds
38.0 g / 0.4 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.03 pounds
14.0 g / 0.1 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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 (sliding) - vertical pull
MPL 11x11x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.13 kg / 0.28 pounds
129.0 g / 1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 0.19 pounds
86.0 g / 0.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.09 pounds
43.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.22 kg / 0.47 pounds
215.0 g / 2.1 N
|
Table 4: Steel thickness (substrate influence) - power losses
MPL 11x11x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.09 pounds
43.0 g / 0.4 N
|
| 1 mm |
|
0.11 kg / 0.24 pounds
107.5 g / 1.1 N
|
| 2 mm |
|
0.22 kg / 0.47 pounds
215.0 g / 2.1 N
|
| 3 mm |
|
0.32 kg / 0.71 pounds
322.5 g / 3.2 N
|
| 5 mm |
|
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
| 10 mm |
|
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
| 11 mm |
|
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
| 12 mm |
|
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
Table 5: Working in heat (stability) - resistance threshold
MPL 11x11x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.43 kg / 0.95 pounds
430.0 g / 4.2 N
|
OK |
| 40 °C | -2.2% |
0.42 kg / 0.93 pounds
420.5 g / 4.1 N
|
OK |
| 60 °C | -4.4% |
0.41 kg / 0.91 pounds
411.1 g / 4.0 N
|
|
| 80 °C | -6.6% |
0.40 kg / 0.89 pounds
401.6 g / 3.9 N
|
|
| 100 °C | -28.8% |
0.31 kg / 0.67 pounds
306.2 g / 3.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 11x11x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.75 kg / 1.65 pounds
1 925 Gs
|
0.11 kg / 0.25 pounds
112 g / 1.1 N
|
N/A |
| 1 mm |
0.70 kg / 1.55 pounds
1 943 Gs
|
0.11 kg / 0.23 pounds
106 g / 1.0 N
|
0.63 kg / 1.40 pounds
~0 Gs
|
| 2 mm |
0.64 kg / 1.41 pounds
1 851 Gs
|
0.10 kg / 0.21 pounds
96 g / 0.9 N
|
0.58 kg / 1.27 pounds
~0 Gs
|
| 3 mm |
0.56 kg / 1.24 pounds
1 734 Gs
|
0.08 kg / 0.19 pounds
84 g / 0.8 N
|
0.50 kg / 1.11 pounds
~0 Gs
|
| 5 mm |
0.40 kg / 0.88 pounds
1 460 Gs
|
0.06 kg / 0.13 pounds
60 g / 0.6 N
|
0.36 kg / 0.79 pounds
~0 Gs
|
| 10 mm |
0.13 kg / 0.28 pounds
831 Gs
|
0.02 kg / 0.04 pounds
19 g / 0.2 N
|
0.12 kg / 0.26 pounds
~0 Gs
|
| 20 mm |
0.01 kg / 0.03 pounds
261 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.03 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
26 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
16 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
10 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
7 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
5 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
4 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MPL 11x11x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.0 cm |
| Car key | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Dynamics (cracking risk) - warning
MPL 11x11x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
22.15 km/h
(6.15 m/s)
|
0.02 J | |
| 30 mm |
37.97 km/h
(10.55 m/s)
|
0.05 J | |
| 50 mm |
49.02 km/h
(13.62 m/s)
|
0.08 J | |
| 100 mm |
69.33 km/h
(19.26 m/s)
|
0.17 J |
Table 9: Coating parameters (durability)
MPL 11x11x1 / 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 11x11x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 627 Mx | 16.3 µWb |
| Pc Coefficient | 0.13 | Low (Flat) |
Table 11: Submerged application
MPL 11x11x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.43 kg | Standard |
| Water (riverbed) |
0.49 kg
(+0.06 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical surface, the magnet retains only approx. 20-30% of its max power.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) drastically limits 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) = 0.13
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
Strengths and weaknesses of neodymium magnets.
Benefits
- They retain magnetic properties for around 10 years – the loss is just ~1% (according to analyses),
- They are extremely resistant to demagnetization induced by presence of other magnetic fields,
- By applying a smooth coating of silver, the element acquires an modern look,
- They show high magnetic induction at the operating surface, which increases their power,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of exact machining and adjusting to atypical applications,
- Key role in future technologies – they are used in HDD drives, brushless drives, advanced medical instruments, as well as multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices
Weaknesses
- At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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 corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of producing threads in the magnet and complicated forms - preferred is casing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what contributes to it?
- with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- whose thickness equals approx. 10 mm
- characterized by lack of roughness
- without the slightest air gap between the magnet and steel
- under perpendicular force direction (90-degree angle)
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
- Clearance – the presence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
- Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Steel type – mild steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
- Plate texture – ground elements ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.
Safety rules for work with neodymium magnets
Eye protection
Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets will cause them shattering into small pieces.
Magnetic media
Powerful magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Warning for allergy sufferers
Some people suffer from a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact may cause dermatitis. We suggest use protective gloves.
Handling guide
Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
Demagnetization risk
Avoid heat. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Finger safety
Protect your hands. Two large magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Adults only
Adult use only. Tiny parts pose a choking risk, causing severe trauma. Store out of reach of children and animals.
ICD Warning
Health Alert: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.
Precision electronics
Note: neodymium magnets generate a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and navigation systems.
Combustion hazard
Machining of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
