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MPL 15x3x6 / N38 - lamellar magnet

lamellar magnet

Catalog no 020122

GTIN/EAN: 5906301811282

5.00
Load capacity 1.90 kg / 18.68 N Magnetic Induction 543.23 mT / 5432 Gs
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

0.590net / pcs

0.726 zł with VAT (23% VAT) / pcs

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price from 1 pcs
0.590 zł
0.726 zł
price from 1100 pcs
0.555 zł
0.682 zł
price from 4300 pcs
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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

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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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.

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Physical properties - MPL 15x3x6 / N38 - lamellar magnet

Specification / characteristics - MPL 15x3x6 / N38 - lamellar magnet

properties
properties values
Cat. no. 020122
GTIN/EAN 5906301811282
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
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

Specification / characteristics MPL 15x3x6 / N38 - lamellar magnet
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

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
10%
0.19 kg / 0.42 lbs
190.0 g / 1.9 N
1 mm
25%
0.48 kg / 1.05 lbs
475.0 g / 4.7 N
2 mm
50%
0.95 kg / 2.09 lbs
950.0 g / 9.3 N
3 mm
75%
1.42 kg / 3.14 lbs
1425.0 g / 14.0 N
5 mm
100%
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
10 mm
100%
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
11 mm
100%
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
12 mm
100%
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%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

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.

Technical and environmental data

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
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 020122-2026
Quick Unit Converter

Force (pull)


Magnetic Induction

Other products

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 15x3x6 mm and a weight of 2.03 g, guarantees premium class connection. As a magnetic bar with high power (approx. 1.90 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
The key to success is sliding the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 15x3x6 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 15x3x6 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 15x3x6 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 15x3x6 mm, which, at a weight of 2.03 g, makes it an element with high energy density. It is a magnetic block with dimensions 15x3x6 mm and a self-weight of 2.03 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:
  • 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

Drawbacks and weaknesses of neodymium magnets: application proposals
  • 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 conditionswhat contributes to it?

Holding force of 1.90 kg is a measurement result conducted under the following configuration:
  • 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

In practice, the actual holding force depends on a number of factors, presented from the most important:
  • 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.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?