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MPL 15x10x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020388

GTIN/EAN: 5906301811879

5.00

length

15 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

2.25 g

Magnetization Direction

↑ axial

Load capacity

1.57 kg / 15.45 N

Magnetic Induction

180.53 mT / 1805 Gs

Coating

[NiCuNi] Nickel

1.316 with VAT / pcs + price for transport

1.070 ZŁ net + 23% VAT / pcs

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Technical - MPL 15x10x2 / N38 - lamellar magnet

Specification / characteristics - MPL 15x10x2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020388
GTIN/EAN 5906301811879
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 10 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 2.25 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.57 kg / 15.45 N
Magnetic Induction ~ ? 180.53 mT / 1805 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 15x10x2 / 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 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 magnet - report

Presented values represent the result of a physical calculation. Results were calculated on algorithms for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 15x10x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1805 Gs
180.5 mT
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
safe
1 mm 1628 Gs
162.8 mT
1.28 kg / 2.82 LBS
1278.3 g / 12.5 N
safe
2 mm 1394 Gs
139.4 mT
0.94 kg / 2.06 LBS
936.3 g / 9.2 N
safe
3 mm 1152 Gs
115.2 mT
0.64 kg / 1.41 LBS
639.9 g / 6.3 N
safe
5 mm 751 Gs
75.1 mT
0.27 kg / 0.60 LBS
271.5 g / 2.7 N
safe
10 mm 262 Gs
26.2 mT
0.03 kg / 0.07 LBS
33.1 g / 0.3 N
safe
15 mm 110 Gs
11.0 mT
0.01 kg / 0.01 LBS
5.8 g / 0.1 N
safe
20 mm 54 Gs
5.4 mT
0.00 kg / 0.00 LBS
1.4 g / 0.0 N
safe
30 mm 18 Gs
1.8 mT
0.00 kg / 0.00 LBS
0.2 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: Vertical hold (vertical surface)
MPL 15x10x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.31 kg / 0.69 LBS
314.0 g / 3.1 N
1 mm Stal (~0.2) 0.26 kg / 0.56 LBS
256.0 g / 2.5 N
2 mm Stal (~0.2) 0.19 kg / 0.41 LBS
188.0 g / 1.8 N
3 mm Stal (~0.2) 0.13 kg / 0.28 LBS
128.0 g / 1.3 N
5 mm Stal (~0.2) 0.05 kg / 0.12 LBS
54.0 g / 0.5 N
10 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 15x10x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.47 kg / 1.04 LBS
471.0 g / 4.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.31 kg / 0.69 LBS
314.0 g / 3.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.16 kg / 0.35 LBS
157.0 g / 1.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.79 kg / 1.73 LBS
785.0 g / 7.7 N

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 15x10x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.16 kg / 0.35 LBS
157.0 g / 1.5 N
1 mm
25%
0.39 kg / 0.87 LBS
392.5 g / 3.9 N
2 mm
50%
0.79 kg / 1.73 LBS
785.0 g / 7.7 N
3 mm
75%
1.18 kg / 2.60 LBS
1177.5 g / 11.6 N
5 mm
100%
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
10 mm
100%
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
11 mm
100%
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
12 mm
100%
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N

Table 5: Working in heat (stability) - thermal limit
MPL 15x10x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
OK
40 °C -2.2% 1.54 kg / 3.39 LBS
1535.5 g / 15.1 N
OK
60 °C -4.4% 1.50 kg / 3.31 LBS
1500.9 g / 14.7 N
80 °C -6.6% 1.47 kg / 3.23 LBS
1466.4 g / 14.4 N
100 °C -28.8% 1.12 kg / 2.46 LBS
1117.8 g / 11.0 N

Table 6: Two magnets (repulsion) - forces in the system
MPL 15x10x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.01 kg / 6.64 LBS
3 196 Gs
0.45 kg / 1.00 LBS
452 g / 4.4 N
N/A
1 mm 2.76 kg / 6.09 LBS
3 456 Gs
0.41 kg / 0.91 LBS
414 g / 4.1 N
2.49 kg / 5.48 LBS
~0 Gs
2 mm 2.45 kg / 5.41 LBS
3 257 Gs
0.37 kg / 0.81 LBS
368 g / 3.6 N
2.21 kg / 4.87 LBS
~0 Gs
3 mm 2.12 kg / 4.68 LBS
3 029 Gs
0.32 kg / 0.70 LBS
318 g / 3.1 N
1.91 kg / 4.21 LBS
~0 Gs
5 mm 1.49 kg / 3.30 LBS
2 543 Gs
0.22 kg / 0.49 LBS
224 g / 2.2 N
1.35 kg / 2.97 LBS
~0 Gs
10 mm 0.52 kg / 1.15 LBS
1 501 Gs
0.08 kg / 0.17 LBS
78 g / 0.8 N
0.47 kg / 1.03 LBS
~0 Gs
20 mm 0.06 kg / 0.14 LBS
524 Gs
0.01 kg / 0.02 LBS
10 g / 0.1 N
0.06 kg / 0.13 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
60 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
37 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
24 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
16 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
12 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
9 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
MPL 15x10x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 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) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (cracking risk) - warning
MPL 15x10x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 26.99 km/h
(7.50 m/s)
0.06 J
30 mm 46.15 km/h
(12.82 m/s)
0.18 J
50 mm 59.57 km/h
(16.55 m/s)
0.31 J
100 mm 84.24 km/h
(23.40 m/s)
0.62 J

Table 9: Surface protection spec
MPL 15x10x2 / 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 15x10x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 194 Mx 31.9 µWb
Pc Coefficient 0.22 Low (Flat)

Table 11: Submerged application
MPL 15x10x2 / N38

Environment Effective steel pull Effect
Air (land) 1.57 kg Standard
Water (riverbed) 1.80 kg
(+0.23 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Vertical hold

*Caution: On a vertical surface, the magnet retains just a fraction of its nominal pull.

2. Steel thickness impact

*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.

3. Temperature resistance

*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) = 0.22

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.

Engineering data and GPSR
Chemical composition
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: 020388-2026
Magnet Unit Converter
Force (pull)

Magnetic Induction

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Model MPL 15x10x2 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. As a block magnet with high power (approx. 1.57 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
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. Watch your fingers! Magnets with a force of 1.57 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 1.57 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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).
Standardly, the MPL 15x10x2 / N38 model is magnetized through the thickness (dimension 2 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (15x10 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 15x10x2 mm, which, at a weight of 2.25 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 1.57 kg (force ~15.45 N), which, with such a compact shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:
  • They do not lose power, even during nearly 10 years – the reduction in power is only ~1% (theoretically),
  • They are resistant to demagnetization induced by external magnetic fields,
  • By covering with a smooth coating of gold, the element acquires an professional look,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the option of free forming and customization to unique solutions, neodymium magnets can be manufactured in a broad palette of forms and dimensions, which amplifies use scope,
  • Huge importance in modern industrial fields – they serve a role in HDD drives, drive modules, diagnostic systems, and technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
  • We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex forms.
  • Health risk to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

The force parameter is a theoretical maximum value conducted under the following configuration:
  • on a plate made of structural steel, optimally conducting the magnetic flux
  • whose thickness is min. 10 mm
  • with an ground contact surface
  • without any insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Effective lifting capacity impacted by specific conditions, mainly (from most important):
  • Gap (betwixt the magnet and the plate), because even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
  • Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

Warnings
Protective goggles

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Combustion hazard

Dust generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Avoid contact if allergic

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.

Hand protection

Pinching hazard: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.

Magnetic interference

GPS units and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Handling guide

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Keep away from children

Only for adults. Small elements can be swallowed, leading to serious injuries. Store away from kids and pets.

Thermal limits

Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Keep away from computers

Very strong magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Danger! Need more info? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98