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
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Product card - 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 |
Physical modeling of the assembly - report
Presented information represent the outcome of a physical calculation. Results rely on models for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Treat these calculations as a reference point during assembly planning.
Table 1: Static pull force (force vs distance) - power drop
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 LBS
430.0 g / 4.2 N
|
safe |
| 1 mm |
925 Gs
92.5 mT
|
0.37 kg / 0.81 LBS
367.7 g / 3.6 N
|
safe |
| 2 mm |
800 Gs
80.0 mT
|
0.27 kg / 0.61 LBS
274.9 g / 2.7 N
|
safe |
| 3 mm |
659 Gs
65.9 mT
|
0.19 kg / 0.41 LBS
186.5 g / 1.8 N
|
safe |
| 5 mm |
415 Gs
41.5 mT
|
0.07 kg / 0.16 LBS
74.0 g / 0.7 N
|
safe |
| 10 mm |
130 Gs
13.0 mT
|
0.01 kg / 0.02 LBS
7.3 g / 0.1 N
|
safe |
| 15 mm |
51 Gs
5.1 mT
|
0.00 kg / 0.00 LBS
1.1 g / 0.0 N
|
safe |
| 20 mm |
24 Gs
2.4 mT
|
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
|
safe |
| 30 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Sliding 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 LBS
86.0 g / 0.8 N
|
| 1 mm | Stal (~0.2) |
0.07 kg / 0.16 LBS
74.0 g / 0.7 N
|
| 2 mm | Stal (~0.2) |
0.05 kg / 0.12 LBS
54.0 g / 0.5 N
|
| 3 mm | Stal (~0.2) |
0.04 kg / 0.08 LBS
38.0 g / 0.4 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.03 LBS
14.0 g / 0.1 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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: 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 LBS
129.0 g / 1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 0.19 LBS
86.0 g / 0.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.09 LBS
43.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 11x11x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.09 LBS
43.0 g / 0.4 N
|
| 1 mm |
|
0.11 kg / 0.24 LBS
107.5 g / 1.1 N
|
| 2 mm |
|
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
|
| 3 mm |
|
0.32 kg / 0.71 LBS
322.5 g / 3.2 N
|
| 5 mm |
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| 10 mm |
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| 11 mm |
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| 12 mm |
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
Table 5: Thermal stability (material behavior) - power drop
MPL 11x11x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
OK |
| 40 °C | -2.2% |
0.42 kg / 0.93 LBS
420.5 g / 4.1 N
|
OK |
| 60 °C | -4.4% |
0.41 kg / 0.91 LBS
411.1 g / 4.0 N
|
|
| 80 °C | -6.6% |
0.40 kg / 0.89 LBS
401.6 g / 3.9 N
|
|
| 100 °C | -28.8% |
0.31 kg / 0.67 LBS
306.2 g / 3.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
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 LBS
1 925 Gs
|
0.11 kg / 0.25 LBS
112 g / 1.1 N
|
N/A |
| 1 mm |
0.70 kg / 1.55 LBS
1 943 Gs
|
0.11 kg / 0.23 LBS
106 g / 1.0 N
|
0.63 kg / 1.40 LBS
~0 Gs
|
| 2 mm |
0.64 kg / 1.41 LBS
1 851 Gs
|
0.10 kg / 0.21 LBS
96 g / 0.9 N
|
0.58 kg / 1.27 LBS
~0 Gs
|
| 3 mm |
0.56 kg / 1.24 LBS
1 734 Gs
|
0.08 kg / 0.19 LBS
84 g / 0.8 N
|
0.50 kg / 1.11 LBS
~0 Gs
|
| 5 mm |
0.40 kg / 0.88 LBS
1 460 Gs
|
0.06 kg / 0.13 LBS
60 g / 0.6 N
|
0.36 kg / 0.79 LBS
~0 Gs
|
| 10 mm |
0.13 kg / 0.28 LBS
831 Gs
|
0.02 kg / 0.04 LBS
19 g / 0.2 N
|
0.12 kg / 0.26 LBS
~0 Gs
|
| 20 mm |
0.01 kg / 0.03 LBS
261 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.03 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
26 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
16 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
10 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
7 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
5 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
4 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
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 |
| Phone / Smartphone | 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: Impact energy (kinetic energy) - collision effects
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: Surface protection spec
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: Underwater work (magnet fishing)
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. Wall mount (shear)
*Caution: On a vertical surface, the magnet retains just a fraction of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. computer case) drastically reduces the holding force.
3. Power loss vs temp
*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
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 |
Other deals
Pros as well as cons of Nd2Fe14B magnets.
Pros
- Their power remains stable, and after around ten years it drops only by ~1% (according to research),
- Neodymium magnets are characterized by highly resistant to magnetic field loss caused by magnetic disturbances,
- The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnets are distinguished by very high magnetic induction on the working surface,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Possibility of individual forming as well as optimizing to individual conditions,
- Huge importance in electronics industry – they serve a role in hard drives, drive modules, diagnostic systems, as well as other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- NdFeB magnets demagnetize 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
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited ability of making threads in the magnet and complex forms - recommended is cover - magnetic holder.
- Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices can complicate diagnosis medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum lifting capacity of the magnet – what affects it?
- on a base made of mild steel, optimally conducting the magnetic flux
- with a cross-section no less than 10 mm
- with a plane cleaned and smooth
- with direct contact (no impurities)
- for force applied at a right angle (pull-off, not shear)
- in neutral thermal conditions
Determinants of practical lifting force of a magnet
- Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Steel grade – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
- Smoothness – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.
Warnings
Magnetic media
Intense magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Heat sensitivity
Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.
Bone fractures
Pinching hazard: The pulling power is so immense that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.
Magnetic interference
A powerful magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Do not bring magnets close to a device to avoid damaging the sensors.
Implant safety
People with a pacemaker must keep an large gap from magnets. The magnetic field can stop the functioning of the implant.
Product not for children
Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store away from children and animals.
Sensitization to coating
Some people have a contact allergy to Ni, which is the standard coating for neodymium magnets. Extended handling might lead to skin redness. We strongly advise wear protective gloves.
Shattering risk
NdFeB magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them cracking into shards.
Handling rules
Handle with care. Neodymium magnets act from a long distance and snap with massive power, often faster than you can move away.
Machining danger
Dust created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
