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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

bulk discounts:

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Technical specification of the product - 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 assembly - data

Presented data constitute the direct effect of a mathematical simulation. Results are based on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Please consider these calculations as a reference point for designers.

Table 1: Static force (force vs distance) - interaction chart
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: Shear force (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: Wall mounting (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 (substrate influence) - 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: Thermal resistance (material behavior) - resistance threshold
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: Two magnets (repulsion) - forces in the system
MPL 10x7x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (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
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) 1.0 cm

Table 8: Collisions (kinetic energy) - 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: Corrosion resistance
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: Electrical data (Pc)
MPL 10x7x3 / N38

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

Table 11: Hydrostatics and buoyancy
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%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its max power.

2. Steel saturation

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

3. Temperature resistance

*For N38 grade, 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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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%
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
Quick Unit Converter
Pulling force

Magnetic Induction

View also proposals

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 10x7x3 mm and a weight of 1.58 g, guarantees the highest quality 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.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. 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 wind generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 10x7x3 / 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. In practice, this means that this magnet has the greatest attraction force on its main planes (10x7 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 10 mm (length), 7 mm (width), and 3 mm (thickness). It is a magnetic block with dimensions 10x7x3 mm and a self-weight of 1.58 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of neodymium magnets.

Benefits

Besides their exceptional field intensity, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • They feature excellent resistance to magnetic field loss when exposed to external magnetic sources,
  • Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold-plated, or silver-plated gives an clean appearance,
  • Neodymium magnets achieve maximum magnetic induction on a small surface, which allows for strong attraction,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of individual creating as well as adjusting to specific applications,
  • Universal use in high-tech industry – they are used in HDD drives, electric motors, diagnostic systems, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in compact constructions

Cons

Cons of neodymium magnets: tips and applications.
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • NdFeB 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 extremely resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of making nuts in the magnet and complicated forms - preferred is a housing - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • With mass production the cost of neodymium magnets is economically unviable,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Information about lifting capacity was determined for ideal contact conditions, taking into account:
  • on a base made of structural steel, effectively closing the magnetic flux
  • with a thickness of at least 10 mm
  • with a plane cleaned and smooth
  • with total lack of distance (without impurities)
  • during detachment in a direction perpendicular to the plane
  • at room temperature

What influences lifting capacity in practice

During everyday use, the actual holding force is determined by many variables, listed from the most important:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Metal type – not every steel attracts identically. Alloy additives weaken the attraction effect.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was measured with the use of a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

H&S for magnets
Sensitization to coating

Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness happens, cease handling magnets and wear gloves.

Do not underestimate power

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Choking Hazard

Neodymium magnets are not intended for children. Eating a few magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Data carriers

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Magnets are brittle

Neodymium magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them breaking into small pieces.

Life threat

For implant holders: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Demagnetization risk

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.

Fire warning

Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

GPS Danger

Be aware: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, tablet, and GPS.

Bone fractures

Mind your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Be careful!

Caution! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98