MPL 20x10x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020126
GTIN/EAN: 5906301811329
- length
- 20 mm [±0,1 mm]
- Width
- 10 mm [±0,1 mm]
- Height
- 1 mm [±0,1 mm]
- Weight
- 1.5 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.810 zł net / pcs
0.996 zł with VAT (23% VAT) / pcs
bulk discounts:
Need more?Frequently asked questions
How much will a block magnet really hold?
What is the maximum working temperature?
What safety factor should I allow?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
Call us now
+48 888 99 98 98
alternatively let us know using
contact form
the contact section.
Specifications and structure of a neodymium magnet can be estimated using our
power calculator.
Order by 14:00 and we’ll ship today!
Technical details - MPL 20x10x1 / N38 - lamellar magnet
Specification / characteristics - MPL 20x10x1 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020126 |
| GTIN/EAN | 5906301811329 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 20 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 1.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.56 kg / 5.46 N |
| Magnetic Induction ~ ? | 87.15 mT / 871 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 modeling of the magnet - data
The following data are the outcome of a physical simulation. Values were calculated on algorithms for the material Nd2Fe14B. Real-world conditions might slightly differ. Treat these calculations as a preliminary roadmap for designers.
Table 1: Static pull force (pull vs distance) - characteristics
MPL 20x10x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
871 Gs
87.1 mT
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
low risk |
| 1 mm |
811 Gs
81.1 mT
|
0.49 kg / 1.07 pounds
485.7 g / 4.8 N
|
low risk |
| 2 mm |
713 Gs
71.3 mT
|
0.37 kg / 0.83 pounds
374.9 g / 3.7 N
|
low risk |
| 3 mm |
603 Gs
60.3 mT
|
0.27 kg / 0.59 pounds
267.9 g / 2.6 N
|
low risk |
| 5 mm |
409 Gs
40.9 mT
|
0.12 kg / 0.27 pounds
123.4 g / 1.2 N
|
low risk |
| 10 mm |
157 Gs
15.7 mT
|
0.02 kg / 0.04 pounds
18.1 g / 0.2 N
|
low risk |
| 15 mm |
69 Gs
6.9 mT
|
0.00 kg / 0.01 pounds
3.5 g / 0.0 N
|
low risk |
| 20 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 pounds
0.9 g / 0.0 N
|
low risk |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
low risk |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Slippage capacity (wall)
MPL 20x10x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.11 kg / 0.25 pounds
112.0 g / 1.1 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 0.22 pounds
98.0 g / 1.0 N
|
| 2 mm | Stal (~0.2) |
0.07 kg / 0.16 pounds
74.0 g / 0.7 N
|
| 3 mm | Stal (~0.2) |
0.05 kg / 0.12 pounds
54.0 g / 0.5 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 pounds
24.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 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: Wall mounting (sliding) - behavior on slippery surfaces
MPL 20x10x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.17 kg / 0.37 pounds
168.0 g / 1.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.11 kg / 0.25 pounds
112.0 g / 1.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
Table 4: Steel thickness (saturation) - power losses
MPL 20x10x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| 1 mm |
|
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
|
| 2 mm |
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
| 3 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
| 5 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 10 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 11 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 12 mm |
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
Table 5: Thermal stability (stability) - power drop
MPL 20x10x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
OK |
| 40 °C | -2.2% |
0.55 kg / 1.21 pounds
547.7 g / 5.4 N
|
OK |
| 60 °C | -4.4% |
0.54 kg / 1.18 pounds
535.4 g / 5.3 N
|
|
| 80 °C | -6.6% |
0.52 kg / 1.15 pounds
523.0 g / 5.1 N
|
|
| 100 °C | -28.8% |
0.40 kg / 0.88 pounds
398.7 g / 3.9 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 20x10x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.94 kg / 2.06 pounds
1 682 Gs
|
0.14 kg / 0.31 pounds
140 g / 1.4 N
|
N/A |
| 1 mm |
0.89 kg / 1.96 pounds
1 696 Gs
|
0.13 kg / 0.29 pounds
133 g / 1.3 N
|
0.80 kg / 1.76 pounds
~0 Gs
|
| 2 mm |
0.81 kg / 1.79 pounds
1 623 Gs
|
0.12 kg / 0.27 pounds
122 g / 1.2 N
|
0.73 kg / 1.61 pounds
~0 Gs
|
| 3 mm |
0.72 kg / 1.59 pounds
1 530 Gs
|
0.11 kg / 0.24 pounds
108 g / 1.1 N
|
0.65 kg / 1.43 pounds
~0 Gs
|
| 5 mm |
0.53 kg / 1.18 pounds
1 316 Gs
|
0.08 kg / 0.18 pounds
80 g / 0.8 N
|
0.48 kg / 1.06 pounds
~0 Gs
|
| 10 mm |
0.21 kg / 0.45 pounds
818 Gs
|
0.03 kg / 0.07 pounds
31 g / 0.3 N
|
0.19 kg / 0.41 pounds
~0 Gs
|
| 20 mm |
0.03 kg / 0.07 pounds
313 Gs
|
0.00 kg / 0.01 pounds
5 g / 0.0 N
|
0.03 kg / 0.06 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
40 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
25 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
16 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
11 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
8 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
6 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (electronics) - warnings
MPL 20x10x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 cm |
| Mechanical watch | 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 20x10x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
18.22 km/h
(5.06 m/s)
|
0.02 J | |
| 30 mm |
18.47 km/h
(5.13 m/s)
|
0.02 J | |
| 50 mm |
18.41 km/h
(5.11 m/s)
|
0.02 J | |
| 100 mm |
18.49 km/h
(5.14 m/s)
|
0.02 J |
Table 9: Corrosion resistance
MPL 20x10x1 / 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: Electrical data (Pc)
MPL 20x10x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 173 Mx | 21.7 µWb |
| Pc Coefficient | 0.10 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 20x10x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.56 kg | Standard |
| Water (riverbed) |
0.64 kg
(+0.08 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical surface, the magnet retains only ~20% of its max power.
2. Steel thickness impact
*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Temperature resistance
*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) = 0.10
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View more offers
Advantages and disadvantages of rare earth magnets.
Benefits
- They do not lose magnetism, even after approximately ten years – the decrease in strength is only ~1% (according to tests),
- Neodymium magnets prove to be remarkably resistant to magnetic field loss caused by external interference,
- By applying a smooth coating of gold, the element acquires an nice look,
- The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of detailed creating and optimizing to specific conditions,
- Fundamental importance in modern industrial fields – they are used in computer drives, brushless drives, precision medical tools, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in miniature devices
Weaknesses
- At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complex shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these products are able to disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Holding force characteristics
Maximum holding power of the magnet – what contributes to it?
- using a sheet made of low-carbon steel, functioning as a ideal flux conductor
- whose thickness equals approx. 10 mm
- characterized by even structure
- without any clearance between the magnet and steel
- during detachment in a direction perpendicular to the mounting surface
- at room temperature
Determinants of practical lifting force of a magnet
- Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of nominal force).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
- Metal type – not every steel attracts identically. Alloy additives weaken 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 factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Safe handling of NdFeB magnets
Handling rules
Exercise caution. Rare earth magnets act from a long distance and connect with huge force, often quicker than you can move away.
Nickel allergy
Some people experience a contact allergy to nickel, which is the common plating for neodymium magnets. Frequent touching might lead to an allergic reaction. We suggest wear safety gloves.
No play value
Always keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are tragic.
Crushing risk
Pinching hazard: The attraction force is so great that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Pacemakers
Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.
Dust explosion hazard
Mechanical processing of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Data carriers
Device Safety: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).
Magnet fragility
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.
Heat sensitivity
Monitor thermal conditions. Exposing the magnet to high heat will ruin its magnetic structure and pulling force.
GPS and phone interference
Navigation devices and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
