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MPL 10x10x4 / N38 - lamellar magnet

lamellar magnet

Catalog no 020112

GTIN/EAN: 5906301811183

5.00

length

10 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

3 g

Magnetization Direction

↑ axial

Load capacity

3.10 kg / 30.39 N

Magnetic Induction

360.85 mT / 3608 Gs

Coating

[NiCuNi] Nickel

1.538 with VAT / pcs + price for transport

1.250 ZŁ net + 23% VAT / pcs

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Technical parameters - MPL 10x10x4 / N38 - lamellar magnet

Specification / characteristics - MPL 10x10x4 / N38 - lamellar magnet

properties
properties values
Cat. no. 020112
GTIN/EAN 5906301811183
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 10 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 3 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.10 kg / 30.39 N
Magnetic Induction ~ ? 360.85 mT / 3608 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x10x4 / 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 analysis of the assembly - report

Presented values are the outcome of a mathematical simulation. Values rely on models for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
MPL 10x10x4 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3606 Gs
360.6 mT
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
strong
1 mm 3035 Gs
303.5 mT
2.20 kg / 4.84 lbs
2195.5 g / 21.5 N
strong
2 mm 2436 Gs
243.6 mT
1.41 kg / 3.12 lbs
1413.8 g / 13.9 N
safe
3 mm 1900 Gs
190.0 mT
0.86 kg / 1.90 lbs
860.8 g / 8.4 N
safe
5 mm 1127 Gs
112.7 mT
0.30 kg / 0.67 lbs
302.7 g / 3.0 N
safe
10 mm 347 Gs
34.7 mT
0.03 kg / 0.06 lbs
28.8 g / 0.3 N
safe
15 mm 140 Gs
14.0 mT
0.00 kg / 0.01 lbs
4.6 g / 0.0 N
safe
20 mm 68 Gs
6.8 mT
0.00 kg / 0.00 lbs
1.1 g / 0.0 N
safe
30 mm 23 Gs
2.3 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
safe
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
safe

Table 2: Shear hold (wall)
MPL 10x10x4 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.62 kg / 1.37 lbs
620.0 g / 6.1 N
1 mm Stal (~0.2) 0.44 kg / 0.97 lbs
440.0 g / 4.3 N
2 mm Stal (~0.2) 0.28 kg / 0.62 lbs
282.0 g / 2.8 N
3 mm Stal (~0.2) 0.17 kg / 0.38 lbs
172.0 g / 1.7 N
5 mm Stal (~0.2) 0.06 kg / 0.13 lbs
60.0 g / 0.6 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
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) - vertical pull
MPL 10x10x4 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.93 kg / 2.05 lbs
930.0 g / 9.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.62 kg / 1.37 lbs
620.0 g / 6.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.31 kg / 0.68 lbs
310.0 g / 3.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.55 kg / 3.42 lbs
1550.0 g / 15.2 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 10x10x4 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.31 kg / 0.68 lbs
310.0 g / 3.0 N
1 mm
25%
0.78 kg / 1.71 lbs
775.0 g / 7.6 N
2 mm
50%
1.55 kg / 3.42 lbs
1550.0 g / 15.2 N
3 mm
75%
2.33 kg / 5.13 lbs
2325.0 g / 22.8 N
5 mm
100%
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
10 mm
100%
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
11 mm
100%
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
12 mm
100%
3.10 kg / 6.83 lbs
3100.0 g / 30.4 N

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 10x10x4 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.10 kg / 6.83 lbs
3100.0 g / 30.4 N
OK
40 °C -2.2% 3.03 kg / 6.68 lbs
3031.8 g / 29.7 N
OK
60 °C -4.4% 2.96 kg / 6.53 lbs
2963.6 g / 29.1 N
80 °C -6.6% 2.90 kg / 6.38 lbs
2895.4 g / 28.4 N
100 °C -28.8% 2.21 kg / 4.87 lbs
2207.2 g / 21.7 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 10x10x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 8.02 kg / 17.68 lbs
5 067 Gs
1.20 kg / 2.65 lbs
1203 g / 11.8 N
N/A
1 mm 6.85 kg / 15.11 lbs
6 667 Gs
1.03 kg / 2.27 lbs
1028 g / 10.1 N
6.17 kg / 13.59 lbs
~0 Gs
2 mm 5.68 kg / 12.52 lbs
6 070 Gs
0.85 kg / 1.88 lbs
852 g / 8.4 N
5.11 kg / 11.27 lbs
~0 Gs
3 mm 4.60 kg / 10.14 lbs
5 463 Gs
0.69 kg / 1.52 lbs
690 g / 6.8 N
4.14 kg / 9.13 lbs
~0 Gs
5 mm 2.87 kg / 6.32 lbs
4 313 Gs
0.43 kg / 0.95 lbs
430 g / 4.2 N
2.58 kg / 5.69 lbs
~0 Gs
10 mm 0.78 kg / 1.73 lbs
2 254 Gs
0.12 kg / 0.26 lbs
117 g / 1.2 N
0.70 kg / 1.55 lbs
~0 Gs
20 mm 0.07 kg / 0.16 lbs
695 Gs
0.01 kg / 0.02 lbs
11 g / 0.1 N
0.07 kg / 0.15 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
76 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
46 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
30 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
21 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
15 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
11 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Hazards (implants) - warnings
MPL 10x10x4 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Mechanical watch 20 Gs (2.0 mT) 3.5 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: Impact energy (cracking risk) - collision effects
MPL 10x10x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 32.61 km/h
(9.06 m/s)
0.12 J
30 mm 56.15 km/h
(15.60 m/s)
0.36 J
50 mm 72.49 km/h
(20.14 m/s)
0.61 J
100 mm 102.52 km/h
(28.48 m/s)
1.22 J

Table 9: Anti-corrosion coating durability
MPL 10x10x4 / 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 10x10x4 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 760 Mx 37.6 µWb
Pc Coefficient 0.46 Low (Flat)

Table 11: Hydrostatics and buoyancy
MPL 10x10x4 / N38

Environment Effective steel pull Effect
Air (land) 3.10 kg Standard
Water (riverbed) 3.55 kg
(+0.45 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

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

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) significantly limits the holding force.

3. Temperature resistance

*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) = 0.46

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.

Technical specification and ecology
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: 020112-2026
Measurement Calculator
Force (pull)

Magnetic Field

Check out also proposals

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 10x10x4 mm and a weight of 3 g, guarantees premium class connection. This magnetic block with a force of 30.39 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 10x10x4 / 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 10x10x4 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 3.10 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 10x10x4 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 10x10x4 / N38 model is magnetized axially (dimension 4 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 10x10x4 mm, which, at a weight of 3 g, makes it an element with high energy density. It is a magnetic block with dimensions 10x10x4 mm and a self-weight of 3 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Advantages

Apart from their notable magnetic energy, neodymium magnets have these key benefits:
  • They retain full power for almost ten years – the drop is just ~1% (based on simulations),
  • They have excellent resistance to magnetism drop due to opposing magnetic fields,
  • In other words, due to the reflective surface of silver, the element gains a professional look,
  • Magnetic induction on the top side of the magnet is exceptional,
  • 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...
  • Possibility of accurate machining and adapting to atypical applications,
  • Wide application in high-tech industry – they are utilized in HDD drives, drive modules, medical equipment, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices

Weaknesses

Cons of neodymium magnets: application proposals
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat it depends on?

The specified lifting capacity represents the peak performance, recorded under ideal test conditions, specifically:
  • with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • characterized by even structure
  • with zero gap (without impurities)
  • during detachment in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Key elements affecting lifting force

Real force is influenced by specific conditions, mainly (from priority):
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
  • Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets
Choking Hazard

Absolutely store magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.

Risk of cracking

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.

Finger safety

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Skin irritation risks

Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose coated magnets.

Impact on smartphones

A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.

Do not overheat magnets

Regular neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.

Safe distance

Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).

Safe operation

Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can react.

Implant safety

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Dust explosion hazard

Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

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

e-mail: bok@dhit.pl

tel: +48 888 99 98 98