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 |
Engineering simulation of the assembly - data
The following values represent the outcome of a physical analysis. Results are based on models for the material Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Please consider these data as a supplementary guide when designing systems.
Table 1: Static force (pull 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 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 hold (vertical surface)
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: Wall mounting (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 resistance (stability) - thermal limit
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) - field collision
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: Protective zones (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 |
| 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: Dynamics (cracking risk) - 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: Anti-corrosion coating 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 (Pc)
MPL 11x11x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 627 Mx | 16.3 µWb |
| Pc Coefficient | 0.13 | Low (Flat) |
Table 11: Physics of underwater searching
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)
*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its perpendicular strength.
2. Steel thickness impact
*Thin steel (e.g. computer case) drastically reduces the holding force.
3. Temperature resistance
*For N38 grade, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.13
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 proposals
Advantages and disadvantages of Nd2Fe14B magnets.
Strengths
- Their strength is durable, and after around 10 years it decreases only by ~1% (according to research),
- Neodymium magnets are exceptionally resistant to demagnetization caused by magnetic disturbances,
- In other words, due to the aesthetic surface of gold, the element gains a professional look,
- Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
- Thanks to the possibility of precise forming and adaptation to individualized projects, NdFeB magnets can be produced in a variety of geometric configurations, which makes them more universal,
- Huge importance in modern technologies – they are commonly used in data components, electric motors, diagnostic systems, also other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic holder.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Best holding force of the magnet in ideal parameters – what it depends on?
- with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
- possessing a thickness of minimum 10 mm to avoid saturation
- characterized by smoothness
- under conditions of ideal adhesion (surface-to-surface)
- during detachment in a direction perpendicular to the mounting surface
- in neutral thermal conditions
Lifting capacity in practice – influencing factors
- Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (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 converting into lifting capacity.
- Metal type – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
- Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.
Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet’s surface and the plate decreases the holding force.
Warnings
Implant safety
For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to work with the magnets.
Conscious usage
Use magnets with awareness. Their immense force can shock even professionals. Be vigilant and respect their force.
Choking Hazard
Product intended for adults. Tiny parts pose a choking risk, causing serious injuries. Keep out of reach of children and animals.
Threat to navigation
A powerful magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Keep magnets near a smartphone to prevent breaking the sensors.
Finger safety
Danger of trauma: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Use thick gloves.
Risk of cracking
Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Electronic devices
Do not bring magnets near a purse, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.
Operating temperature
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.
Fire risk
Dust generated during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Metal Allergy
Some people have a sensitization to nickel, which is the common plating for NdFeB magnets. Frequent touching may cause an allergic reaction. We recommend wear safety gloves.
