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MPL 10x7x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020115

GTIN/EAN: 5906301811213

5.00

length

10 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.58 g

Magnetization Direction

↑ axial

Load capacity

2.02 kg / 19.82 N

Magnetic Induction

339.79 mT / 3398 Gs

Coating

[NiCuNi] Nickel

0.849 with VAT / pcs + price for transport

0.690 ZŁ net + 23% VAT / pcs

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Lifting power along with appearance of a neodymium magnet can be estimated with our modular calculator.

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Physical properties - MPL 10x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 10x7x3 / N38 - lamellar magnet

properties
properties values
Cat. no. 020115
GTIN/EAN 5906301811213
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 10 mm [±0,1 mm]
Width 7 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 1.58 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.02 kg / 19.82 N
Magnetic Induction ~ ? 339.79 mT / 3398 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x7x3 / 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

Physical modeling of the product - technical parameters

Presented information constitute the result of a physical analysis. Results were calculated on models for the material Nd2Fe14B. Operational performance may deviate from the simulation results. Please consider these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MPL 10x7x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3396 Gs
339.6 mT
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
warning
1 mm 2727 Gs
272.7 mT
1.30 kg / 2.87 LBS
1303.2 g / 12.8 N
safe
2 mm 2053 Gs
205.3 mT
0.74 kg / 1.63 LBS
738.2 g / 7.2 N
safe
3 mm 1502 Gs
150.2 mT
0.40 kg / 0.87 LBS
395.2 g / 3.9 N
safe
5 mm 803 Gs
80.3 mT
0.11 kg / 0.25 LBS
113.0 g / 1.1 N
safe
10 mm 216 Gs
21.6 mT
0.01 kg / 0.02 LBS
8.2 g / 0.1 N
safe
15 mm 82 Gs
8.2 mT
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
safe
20 mm 39 Gs
3.9 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
safe
30 mm 13 Gs
1.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Slippage capacity (wall)
MPL 10x7x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.40 kg / 0.89 LBS
404.0 g / 4.0 N
1 mm Stal (~0.2) 0.26 kg / 0.57 LBS
260.0 g / 2.6 N
2 mm Stal (~0.2) 0.15 kg / 0.33 LBS
148.0 g / 1.5 N
3 mm Stal (~0.2) 0.08 kg / 0.18 LBS
80.0 g / 0.8 N
5 mm Stal (~0.2) 0.02 kg / 0.05 LBS
22.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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) - vertical pull
MPL 10x7x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.61 kg / 1.34 LBS
606.0 g / 5.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.40 kg / 0.89 LBS
404.0 g / 4.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.20 kg / 0.45 LBS
202.0 g / 2.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.01 kg / 2.23 LBS
1010.0 g / 9.9 N

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 10x7x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.20 kg / 0.45 LBS
202.0 g / 2.0 N
1 mm
25%
0.51 kg / 1.11 LBS
505.0 g / 5.0 N
2 mm
50%
1.01 kg / 2.23 LBS
1010.0 g / 9.9 N
3 mm
75%
1.52 kg / 3.34 LBS
1515.0 g / 14.9 N
5 mm
100%
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
10 mm
100%
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
11 mm
100%
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
12 mm
100%
2.02 kg / 4.45 LBS
2020.0 g / 19.8 N

Table 5: Working in heat (stability) - power drop
MPL 10x7x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.02 kg / 4.45 LBS
2020.0 g / 19.8 N
OK
40 °C -2.2% 1.98 kg / 4.36 LBS
1975.6 g / 19.4 N
OK
60 °C -4.4% 1.93 kg / 4.26 LBS
1931.1 g / 18.9 N
80 °C -6.6% 1.89 kg / 4.16 LBS
1886.7 g / 18.5 N
100 °C -28.8% 1.44 kg / 3.17 LBS
1438.2 g / 14.1 N

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 10x7x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.98 kg / 10.97 LBS
4 893 Gs
0.75 kg / 1.65 LBS
746 g / 7.3 N
N/A
1 mm 4.09 kg / 9.01 LBS
6 155 Gs
0.61 kg / 1.35 LBS
613 g / 6.0 N
3.68 kg / 8.11 LBS
~0 Gs
2 mm 3.21 kg / 7.08 LBS
5 455 Gs
0.48 kg / 1.06 LBS
482 g / 4.7 N
2.89 kg / 6.37 LBS
~0 Gs
3 mm 2.44 kg / 5.39 LBS
4 758 Gs
0.37 kg / 0.81 LBS
366 g / 3.6 N
2.20 kg / 4.85 LBS
~0 Gs
5 mm 1.34 kg / 2.94 LBS
3 518 Gs
0.20 kg / 0.44 LBS
200 g / 2.0 N
1.20 kg / 2.65 LBS
~0 Gs
10 mm 0.28 kg / 0.61 LBS
1 606 Gs
0.04 kg / 0.09 LBS
42 g / 0.4 N
0.25 kg / 0.55 LBS
~0 Gs
20 mm 0.02 kg / 0.04 LBS
433 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.04 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
43 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
26 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
17 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) - precautionary measures
MPL 10x7x3 / 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
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) 1.0 cm

Table 8: Collisions (cracking risk) - collision effects
MPL 10x7x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 36.15 km/h
(10.04 m/s)
0.08 J
30 mm 62.46 km/h
(17.35 m/s)
0.24 J
50 mm 80.63 km/h
(22.40 m/s)
0.40 J
100 mm 114.03 km/h
(31.68 m/s)
0.79 J

Table 9: Anti-corrosion coating durability
MPL 10x7x3 / 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 10x7x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 480 Mx 24.8 µWb
Pc Coefficient 0.42 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 10x7x3 / N38

Environment Effective steel pull Effect
Air (land) 2.02 kg Standard
Water (riverbed) 2.31 kg
(+0.29 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Sliding resistance

*Caution: On a vertical surface, the magnet retains just ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) severely weakens the holding force.

3. Thermal stability

*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) = 0.42

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
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
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: 020115-2026
Measurement Calculator
Force (pull)

Field Strength

Other deals

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 10x7x3 mm and a weight of 1.58 g, guarantees premium class connection. This magnetic block with a force of 19.82 N is ready for shipment in 24h, allowing for rapid realization of your project. 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 10x7x3 / 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.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 2.02 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.
For mounting flat magnets MPL 10x7x3 / N38, we recommend utilizing two-component adhesives (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).
Standardly, the MPL 10x7x3 / N38 model is magnetized through the thickness (dimension 3 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 10x7x3 mm, which, at a weight of 1.58 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 2.02 kg (force ~19.82 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 Nd2Fe14B magnets.

Strengths

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • Their magnetic field is maintained, and after around 10 years it decreases only by ~1% (theoretically),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by external magnetic fields,
  • A magnet with a metallic silver surface looks better,
  • Neodymium magnets generate maximum magnetic induction on a small surface, which increases force concentration,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures approaching 230°C and above...
  • Considering the option of accurate molding and adaptation to specialized requirements, neodymium magnets can be manufactured in a variety of shapes and sizes, which amplifies use scope,
  • Universal use in high-tech industry – they are utilized in HDD drives, electric motors, advanced medical instruments, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets: tips and applications.
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We suggest casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex shapes.
  • Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Breakaway force was defined for optimal configuration, assuming:
  • on a base made of mild steel, perfectly concentrating the magnetic field
  • whose thickness is min. 10 mm
  • characterized by lack of roughness
  • under conditions of ideal adhesion (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

Please note that the application force may be lower influenced by the following factors, in order of importance:
  • Clearance – the presence of any layer (rust, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Steel thickness – too thin sheet causes magnetic saturation, causing part of the power to be escaped into the air.
  • Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the holding force.

Safe handling of neodymium magnets
Physical harm

Danger of trauma: The attraction force is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Machining danger

Dust produced during cutting of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Magnets are brittle

Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets leads to them shattering into shards.

Handling rules

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Demagnetization risk

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.

ICD Warning

Health Alert: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

GPS and phone interference

An intense magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to avoid breaking the sensors.

Data carriers

Intense magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Danger to the youngest

Always store magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are fatal.

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease working with magnets and wear gloves.

Security! More info about risks in the article: Magnet Safety Guide.