Neodymium magnets: strength you're looking for

Want to buy really powerful magnets? Our range includes rich assortment of disc, cylindrical and ring magnets. They are ideal for home use, workshop and industrial tasks. See products with fast shipping.

discover full offer

Magnet fishing: strong F200/F400 sets

Begin your hobby related to seabed exploration! Our double-handle grips (F200, F400) provide safety guarantee and immense power. Stainless steel construction and reinforced ropes will perform in challenging water conditions.

choose searching equipment

Magnetic mounts for industry

Reliable solutions for fixing non-invasive. Threaded grips (M8, M10, M12) provide quick improvement of work on warehouses. Perfect for mounting lighting, sensors and ads.

check available threads

📦 Fast shipping: buy by 14:00, package goes out today!

Dhit sp. z o.o.
Product available Ships tomorrow

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

bulk discounts:

Need more?

price from 1 pcs
1.250 ZŁ
1.538 ZŁ
price from 1125 pcs
1.125 ZŁ
1.384 ZŁ
price from 2250 pcs
1.100 ZŁ
1.353 ZŁ
Looking for a better price?

Contact us by phone +48 22 499 98 98 if you prefer get in touch by means of contact form through our site.
Parameters and form of neodymium magnets can be calculated with our force calculator.

Same-day shipping for orders placed before 14:00.

Technical data - 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 simulation of the product - data

Presented values are the direct effect of a physical calculation. Values are based on models for the material Nd2Fe14B. Actual parameters may deviate from the simulation results. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - 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
strong
1 mm 3035 Gs
303.5 mT
2.20 kg / 4.84 pounds
2195.5 g / 21.5 N
strong
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: Slippage force (vertical surface)
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: Vertical assembly (shearing) - behavior on slippery surfaces
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: 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 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 resistance (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 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 (repulsion) - field range
MPL 10x10x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (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: Hazards (electronics) - 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
Timepiece 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 (kinetic energy) - 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: Surface protection spec
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: Physics of underwater searching
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

*Caution: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Thermal stability

*For standard magnets, 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

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
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: 020112-2026
Measurement Calculator
Force (pull)

Magnetic Field

Other proposals

Model MPL 10x10x4 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 30.39 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 10x10x4 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, 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 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 10x10x4 / N38, it is best to use two-component adhesives (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.
This model is characterized by dimensions 10x10x4 mm, which, at a weight of 3 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 3.10 kg (force ~30.39 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.

Advantages

Besides their tremendous pulling force, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • They possess excellent resistance to magnetic field loss as a result of external fields,
  • A magnet with a metallic silver surface has an effective appearance,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • 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...
  • In view of the potential of accurate forming and adaptation to unique requirements, NdFeB magnets can be modeled in a wide range of geometric configurations, which makes them more universal,
  • Wide application in advanced technology sectors – they serve a role in computer drives, drive modules, diagnostic systems, and complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these products can complicate diagnosis medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Detachment force of the magnet in optimal conditionswhat it depends on?

The specified lifting capacity represents the peak performance, measured under laboratory conditions, specifically:
  • on a base made of structural steel, perfectly concentrating the magnetic flux
  • with a cross-section of at least 10 mm
  • with a surface free of scratches
  • with zero gap (without paint)
  • for force applied at a right angle (in the magnet axis)
  • in temp. approx. 20°C

Determinants of practical lifting force of a magnet

In real-world applications, the actual holding force is determined by a number of factors, ranked from crucial:
  • Gap (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Plate thickness – too thin plate causes magnetic saturation, causing part of the power to be wasted to the other side.
  • Plate material – mild steel gives the best results. Higher carbon content lower magnetic properties and holding force.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Safety rules for work with neodymium magnets
Heat warning

Do not overheat. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Beware of splinters

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Sensitization to coating

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness appears, immediately stop handling magnets and wear gloves.

Respect the power

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.

Fire warning

Mechanical processing of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Finger safety

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

Warning for heart patients

Individuals with a ICD have to keep an large gap from magnets. The magnetic field can interfere with the functioning of the implant.

No play value

Adult use only. Small elements can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

Threat to navigation

Navigation devices and mobile phones are highly sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Protect data

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

Warning! Details about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98