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.
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Technical data of the product - 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 |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 |
Technical analysis of the assembly - data
Presented information are the result of a physical simulation. Values are based on models for the class Nd2Fe14B. Real-world performance might slightly deviate from the simulation results. Please consider these data as a reference point when designing systems.
Table 1: Static force (force 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 lbs
560.0 g / 5.5 N
|
low risk |
| 1 mm |
811 Gs
81.1 mT
|
0.49 kg / 1.07 lbs
485.7 g / 4.8 N
|
low risk |
| 2 mm |
713 Gs
71.3 mT
|
0.37 kg / 0.83 lbs
374.9 g / 3.7 N
|
low risk |
| 3 mm |
603 Gs
60.3 mT
|
0.27 kg / 0.59 lbs
267.9 g / 2.6 N
|
low risk |
| 5 mm |
409 Gs
40.9 mT
|
0.12 kg / 0.27 lbs
123.4 g / 1.2 N
|
low risk |
| 10 mm |
157 Gs
15.7 mT
|
0.02 kg / 0.04 lbs
18.1 g / 0.2 N
|
low risk |
| 15 mm |
69 Gs
6.9 mT
|
0.00 kg / 0.01 lbs
3.5 g / 0.0 N
|
low risk |
| 20 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 lbs
0.9 g / 0.0 N
|
low risk |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Vertical hold (wall)
MPL 20x10x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.11 kg / 0.25 lbs
112.0 g / 1.1 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 0.22 lbs
98.0 g / 1.0 N
|
| 2 mm | Stal (~0.2) |
0.07 kg / 0.16 lbs
74.0 g / 0.7 N
|
| 3 mm | Stal (~0.2) |
0.05 kg / 0.12 lbs
54.0 g / 0.5 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 lbs
24.0 g / 0.2 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: Vertical assembly (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 lbs
168.0 g / 1.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.11 kg / 0.25 lbs
112.0 g / 1.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.06 kg / 0.12 lbs
56.0 g / 0.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.28 kg / 0.62 lbs
280.0 g / 2.7 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x10x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.06 kg / 0.12 lbs
56.0 g / 0.5 N
|
| 1 mm |
|
0.14 kg / 0.31 lbs
140.0 g / 1.4 N
|
| 2 mm |
|
0.28 kg / 0.62 lbs
280.0 g / 2.7 N
|
| 3 mm |
|
0.42 kg / 0.93 lbs
420.0 g / 4.1 N
|
| 5 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 10 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 11 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 12 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
Table 5: Working in heat (material behavior) - 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 lbs
560.0 g / 5.5 N
|
OK |
| 40 °C | -2.2% |
0.55 kg / 1.21 lbs
547.7 g / 5.4 N
|
OK |
| 60 °C | -4.4% |
0.54 kg / 1.18 lbs
535.4 g / 5.3 N
|
|
| 80 °C | -6.6% |
0.52 kg / 1.15 lbs
523.0 g / 5.1 N
|
|
| 100 °C | -28.8% |
0.40 kg / 0.88 lbs
398.7 g / 3.9 N
|
Table 6: Two magnets (attraction) - forces in the system
MPL 20x10x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.94 kg / 2.06 lbs
1 682 Gs
|
0.14 kg / 0.31 lbs
140 g / 1.4 N
|
N/A |
| 1 mm |
0.89 kg / 1.96 lbs
1 696 Gs
|
0.13 kg / 0.29 lbs
133 g / 1.3 N
|
0.80 kg / 1.76 lbs
~0 Gs
|
| 2 mm |
0.81 kg / 1.79 lbs
1 623 Gs
|
0.12 kg / 0.27 lbs
122 g / 1.2 N
|
0.73 kg / 1.61 lbs
~0 Gs
|
| 3 mm |
0.72 kg / 1.59 lbs
1 530 Gs
|
0.11 kg / 0.24 lbs
108 g / 1.1 N
|
0.65 kg / 1.43 lbs
~0 Gs
|
| 5 mm |
0.53 kg / 1.18 lbs
1 316 Gs
|
0.08 kg / 0.18 lbs
80 g / 0.8 N
|
0.48 kg / 1.06 lbs
~0 Gs
|
| 10 mm |
0.21 kg / 0.45 lbs
818 Gs
|
0.03 kg / 0.07 lbs
31 g / 0.3 N
|
0.19 kg / 0.41 lbs
~0 Gs
|
| 20 mm |
0.03 kg / 0.07 lbs
313 Gs
|
0.00 kg / 0.01 lbs
5 g / 0.0 N
|
0.03 kg / 0.06 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
40 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
25 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
16 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
11 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
8 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
6 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 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 |
| Mobile device | 40 Gs (4.0 mT) | 2.0 cm |
| Remote | 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: Collisions (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 just approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.
3. Power loss vs temp
*For standard magnets, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.10
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Strengths as well as weaknesses of neodymium magnets.
Benefits
- They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
- They feature excellent resistance to magnetism drop due to opposing magnetic fields,
- By covering with a shiny layer of nickel, the element gains an nice look,
- Magnets have exceptionally strong magnetic induction on the active area,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to freedom in constructing and the capacity to customize to specific needs,
- Huge importance in innovative solutions – they serve a role in hard drives, electromotive mechanisms, medical equipment, and technologically advanced constructions.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At strong impacts they can break, therefore we advise placing them in strong housings. 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 recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of creating nuts in the magnet and complex forms - preferred is cover - magnet mounting.
- Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets are able to be problematic in diagnostics medical in case of swallowing.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a base made of mild steel, effectively closing the magnetic field
- whose thickness equals approx. 10 mm
- with an ideally smooth touching surface
- under conditions of ideal adhesion (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Clearance – the presence of foreign body (paint, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
- Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
H&S for magnets
This is not a toy
Neodymium magnets are not intended for children. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.
Operating temperature
Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and pulling force.
Threat to navigation
A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.
Pinching danger
Danger of trauma: The pulling power is so great that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.
Do not drill into magnets
Powder generated during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Protect data
Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Safe operation
Be careful. Neodymium magnets attract from a long distance and connect with huge force, often faster than you can move away.
Warning for allergy sufferers
Some people have a sensitization to nickel, which is the common plating for neodymium magnets. Prolonged contact may cause skin redness. We recommend use safety gloves.
ICD Warning
Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Eye protection
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
