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MPL 10x10x4 / N38 - lamellar magnet

lamellar magnet

Catalog no 020112

GTIN/EAN: 5906301811183

5.00
Load capacity 3.10 kg / 30.39 N Magnetic Induction 360.85 mT / 3608 Gs
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
3 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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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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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 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

Technical simulation of the assembly - data

These information represent the direct effect of a physical simulation. Results rely on algorithms for the class Nd2Fe14B. Actual conditions may differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
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 pounds
3100.0 g / 30.4 N
warning
1 mm 3035 Gs
303.5 mT
2.20 kg / 4.84 pounds
2195.5 g / 21.5 N
warning
2 mm 2436 Gs
243.6 mT
1.41 kg / 3.12 pounds
1413.8 g / 13.9 N
safe
3 mm 1900 Gs
190.0 mT
0.86 kg / 1.90 pounds
860.8 g / 8.4 N
safe
5 mm 1127 Gs
112.7 mT
0.30 kg / 0.67 pounds
302.7 g / 3.0 N
safe
10 mm 347 Gs
34.7 mT
0.03 kg / 0.06 pounds
28.8 g / 0.3 N
safe
15 mm 140 Gs
14.0 mT
0.00 kg / 0.01 pounds
4.6 g / 0.0 N
safe
20 mm 68 Gs
6.8 mT
0.00 kg / 0.00 pounds
1.1 g / 0.0 N
safe
30 mm 23 Gs
2.3 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 pounds
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 pounds
620.0 g / 6.1 N
1 mm Stal (~0.2) 0.44 kg / 0.97 pounds
440.0 g / 4.3 N
2 mm Stal (~0.2) 0.28 kg / 0.62 pounds
282.0 g / 2.8 N
3 mm Stal (~0.2) 0.17 kg / 0.38 pounds
172.0 g / 1.7 N
5 mm Stal (~0.2) 0.06 kg / 0.13 pounds
60.0 g / 0.6 N
10 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (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 pounds
930.0 g / 9.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.62 kg / 1.37 pounds
620.0 g / 6.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.31 kg / 0.68 pounds
310.0 g / 3.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.55 kg / 3.42 pounds
1550.0 g / 15.2 N

Table 4: Material efficiency (saturation) - power losses
MPL 10x10x4 / N38

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

Table 5: Thermal stability (stability) - power drop
MPL 10x10x4 / N38

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

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
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 pounds
5 067 Gs
1.20 kg / 2.65 pounds
1203 g / 11.8 N
N/A
1 mm 6.85 kg / 15.11 pounds
6 667 Gs
1.03 kg / 2.27 pounds
1028 g / 10.1 N
6.17 kg / 13.59 pounds
~0 Gs
2 mm 5.68 kg / 12.52 pounds
6 070 Gs
0.85 kg / 1.88 pounds
852 g / 8.4 N
5.11 kg / 11.27 pounds
~0 Gs
3 mm 4.60 kg / 10.14 pounds
5 463 Gs
0.69 kg / 1.52 pounds
690 g / 6.8 N
4.14 kg / 9.13 pounds
~0 Gs
5 mm 2.87 kg / 6.32 pounds
4 313 Gs
0.43 kg / 0.95 pounds
430 g / 4.2 N
2.58 kg / 5.69 pounds
~0 Gs
10 mm 0.78 kg / 1.73 pounds
2 254 Gs
0.12 kg / 0.26 pounds
117 g / 1.2 N
0.70 kg / 1.55 pounds
~0 Gs
20 mm 0.07 kg / 0.16 pounds
695 Gs
0.01 kg / 0.02 pounds
11 g / 0.1 N
0.07 kg / 0.15 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
76 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
46 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
30 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
21 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
15 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
11 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - precautionary measures
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
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 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 (kinetic energy) - collision effects
MPL 10x10x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.69 km/h
(6.86 m/s)
0.07 J
30 mm 24.82 km/h
(6.90 m/s)
0.07 J
50 mm 24.82 km/h
(6.89 m/s)
0.07 J
100 mm 24.83 km/h
(6.90 m/s)
0.07 J

Table 9: Corrosion resistance
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: Electrical data (Flux)
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

1. Wall mount (shear)

*Warning: On a vertical wall, the magnet retains just ~20% of its nominal pull.

2. Steel thickness impact

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

3. Power loss vs temp

*For N38 material, the critical limit 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

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%

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: 020112-2026
Measurement Calculator

Pulling force


Field Strength

View also deals

Model MPL 10x10x4 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. 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.
They constitute a key element in the production of 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 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. 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.
The presented product is a neodymium magnet with precisely defined parameters: 10 mm (length), 10 mm (width), and 4 mm (thickness). 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 product meets the standards for N38 grade magnets.

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Besides their remarkable field intensity, neodymium magnets offer the following advantages:
  • They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They possess excellent resistance to weakening of magnetic properties due to external fields,
  • A magnet with a smooth gold surface looks better,
  • Magnets are distinguished by exceptionally strong magnetic induction on the outer layer,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to flexibility in shaping and the capacity to modify to individual projects,
  • Significant place in future technologies – they find application in data components, motor assemblies, precision medical tools, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Limitations

Cons of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and 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 advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Limited possibility of creating nuts in the magnet and complex forms - recommended is casing - magnet mounting.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat affects it?

Breakaway force was defined for optimal configuration, including:
  • with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with an ground touching surface
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

During everyday use, the actual lifting capacity is determined by many variables, presented from the most important:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Plate material – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and holding force.
  • Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the load capacity.

Safe handling of neodymium magnets
Fragile material

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Protect data

Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Fire risk

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Safe operation

Handle magnets with awareness. Their huge power can shock even experienced users. Stay alert and respect their power.

Adults only

Strictly store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are life-threatening.

Pacemakers

Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Sensitization to coating

Certain individuals experience a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Frequent touching can result in skin redness. We strongly advise use protective gloves.

Phone sensors

Remember: rare earth magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Crushing risk

Big blocks can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.

Power loss in heat

Monitor thermal conditions. Exposing the magnet to high heat will ruin its magnetic structure and strength.

Caution! Learn more about risks in the article: Safety of working with magnets.