MPL 15x3x6 / N38 - lamellar magnet
lamellar magnet
Catalog no 020122
GTIN/EAN: 5906301811282
- length
- 15 mm [±0,1 mm]
- Width
- 3 mm [±0,1 mm]
- Height
- 6 mm [±0,1 mm]
- Weight
- 2.03 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.590 zł net / pcs
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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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Physical properties - MPL 15x3x6 / N38 - lamellar magnet
Specification / characteristics - MPL 15x3x6 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020122 |
| GTIN/EAN | 5906301811282 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 15 mm [±0,1 mm] |
| Width | 3 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 2.03 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.90 kg / 18.68 N |
| Magnetic Induction ~ ? | 543.23 mT / 5432 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 |
Physical simulation of the magnet - data
The following values are the result of a physical analysis. Values were calculated on algorithms for the material Nd2Fe14B. Operational performance might slightly differ from theoretical values. Use these calculations as a preliminary roadmap when designing systems.
Table 1: Static force (force vs gap) - power drop
MPL 15x3x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5423 Gs
542.3 mT
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
safe |
| 1 mm |
3221 Gs
322.1 mT
|
0.67 kg / 1.48 lbs
670.2 g / 6.6 N
|
safe |
| 2 mm |
1942 Gs
194.2 mT
|
0.24 kg / 0.54 lbs
243.7 g / 2.4 N
|
safe |
| 3 mm |
1274 Gs
127.4 mT
|
0.10 kg / 0.23 lbs
104.9 g / 1.0 N
|
safe |
| 5 mm |
652 Gs
65.2 mT
|
0.03 kg / 0.06 lbs
27.5 g / 0.3 N
|
safe |
| 10 mm |
195 Gs
19.5 mT
|
0.00 kg / 0.01 lbs
2.5 g / 0.0 N
|
safe |
| 15 mm |
81 Gs
8.1 mT
|
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
|
safe |
| 20 mm |
41 Gs
4.1 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
safe |
| 30 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
safe |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
safe |
Table 2: Sliding load (vertical surface)
MPL 15x3x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.38 kg / 0.84 lbs
380.0 g / 3.7 N
|
| 1 mm | Stal (~0.2) |
0.13 kg / 0.30 lbs
134.0 g / 1.3 N
|
| 2 mm | Stal (~0.2) |
0.05 kg / 0.11 lbs
48.0 g / 0.5 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 0.04 lbs
20.0 g / 0.2 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.01 lbs
6.0 g / 0.1 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 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 (shearing) - behavior on slippery surfaces
MPL 15x3x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.57 kg / 1.26 lbs
570.0 g / 5.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.38 kg / 0.84 lbs
380.0 g / 3.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.19 kg / 0.42 lbs
190.0 g / 1.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.95 kg / 2.09 lbs
950.0 g / 9.3 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 15x3x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.19 kg / 0.42 lbs
190.0 g / 1.9 N
|
| 1 mm |
|
0.48 kg / 1.05 lbs
475.0 g / 4.7 N
|
| 2 mm |
|
0.95 kg / 2.09 lbs
950.0 g / 9.3 N
|
| 3 mm |
|
1.42 kg / 3.14 lbs
1425.0 g / 14.0 N
|
| 5 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 10 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 11 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 12 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MPL 15x3x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
OK |
| 40 °C | -2.2% |
1.86 kg / 4.10 lbs
1858.2 g / 18.2 N
|
OK |
| 60 °C | -4.4% |
1.82 kg / 4.00 lbs
1816.4 g / 17.8 N
|
OK |
| 80 °C | -6.6% |
1.77 kg / 3.91 lbs
1774.6 g / 17.4 N
|
|
| 100 °C | -28.8% |
1.35 kg / 2.98 lbs
1352.8 g / 13.3 N
|
Table 6: Two magnets (repulsion) - forces in the system
MPL 15x3x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
8.16 kg / 17.99 lbs
5 914 Gs
|
1.22 kg / 2.70 lbs
1224 g / 12.0 N
|
N/A |
| 1 mm |
4.96 kg / 10.94 lbs
8 460 Gs
|
0.74 kg / 1.64 lbs
745 g / 7.3 N
|
4.47 kg / 9.85 lbs
~0 Gs
|
| 2 mm |
2.88 kg / 6.34 lbs
6 441 Gs
|
0.43 kg / 0.95 lbs
432 g / 4.2 N
|
2.59 kg / 5.71 lbs
~0 Gs
|
| 3 mm |
1.70 kg / 3.75 lbs
4 950 Gs
|
0.25 kg / 0.56 lbs
255 g / 2.5 N
|
1.53 kg / 3.37 lbs
~0 Gs
|
| 5 mm |
0.67 kg / 1.48 lbs
3 116 Gs
|
0.10 kg / 0.22 lbs
101 g / 1.0 N
|
0.61 kg / 1.34 lbs
~0 Gs
|
| 10 mm |
0.12 kg / 0.26 lbs
1 304 Gs
|
0.02 kg / 0.04 lbs
18 g / 0.2 N
|
0.11 kg / 0.23 lbs
~0 Gs
|
| 20 mm |
0.01 kg / 0.02 lbs
391 Gs
|
0.00 kg / 0.00 lbs
2 g / 0.0 N
|
0.01 kg / 0.02 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
46 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
29 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
19 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
13 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
9 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
7 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Safety (HSE) (implants) - warnings
MPL 15x3x6 / 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) | 3.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.5 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) | 1.0 cm |
Table 8: Collisions (kinetic energy) - warning
MPL 15x3x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
15.60 km/h
(4.33 m/s)
|
0.02 J | |
| 30 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J | |
| 50 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J | |
| 100 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J |
Table 9: Corrosion resistance
MPL 15x3x6 / 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 15x3x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 390 Mx | 23.9 µWb |
| Pc Coefficient | 0.79 | High (Stable) |
Table 11: Hydrostatics and buoyancy
MPL 15x3x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.90 kg | Standard |
| Water (riverbed) |
2.18 kg
(+0.28 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical surface, the magnet holds merely a fraction of its perpendicular strength.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) significantly reduces the holding force.
3. Heat tolerance
*For standard magnets, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.79
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.
Elemental analysis
| 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
Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
- They are resistant to demagnetization induced by external field influence,
- Thanks to the elegant finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an modern appearance,
- Magnets are distinguished by exceptionally strong magnetic induction on the working surface,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
- Possibility of custom machining as well as adjusting to individual needs,
- Fundamental importance in advanced technology sectors – they are used in data components, brushless drives, medical devices, also technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating nuts and complex forms in magnets, we propose using casing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets are able to complicate diagnosis medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- using a base made of high-permeability steel, serving as a ideal flux conductor
- possessing a thickness of at least 10 mm to avoid saturation
- with a plane perfectly flat
- without any air gap between the magnet and steel
- under perpendicular application of breakaway force (90-degree angle)
- at conditions approx. 20°C
Determinants of lifting force in real conditions
- Distance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Load vector – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Steel type – low-carbon steel attracts best. Alloy steels lower magnetic permeability and holding force.
- Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate lowers the holding force.
Safety rules for work with NdFeB magnets
Magnetic interference
Navigation devices and mobile phones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.
Combustion hazard
Fire warning: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Pacemakers
People with a ICD have to maintain an safe separation from magnets. The magnetic field can stop the functioning of the implant.
Eye protection
Beware of splinters. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.
Nickel allergy
A percentage of the population have a hypersensitivity to Ni, which is the common plating for neodymium magnets. Prolonged contact can result in skin redness. It is best to wear safety gloves.
This is not a toy
Strictly store magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are fatal.
Safe operation
Be careful. Neodymium magnets act from a distance and snap with huge force, often quicker than you can react.
Physical harm
Pinching hazard: The pulling power is so immense that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.
Electronic hazard
Very strong magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.
Maximum temperature
Watch the temperature. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
