Neodymium magnets – most powerful on the market

Need reliable magnetic field? We offer complete range of disc, cylindrical and ring magnets. Perfect for for home use, workshop and model making. See products in stock.

check price list and dimensions

Magnet fishing sets (hobbyists)

Start your adventure involving underwater treasure hunting! Our specialized grips (F200, F400) provide safety guarantee and huge lifting capacity. Solid, corrosion-resistant housing and reinforced ropes will perform in rivers and lakes.

find your water magnet

Magnetic mounts for industry

Reliable solutions for mounting without drilling. Threaded mounts (M8, M10, M12) provide instant organization of work on production halls. Perfect for mounting lamps, detectors and ads.

check industrial applications

🚚 Order by 14:00 – we'll ship today!

Dhit sp. z o.o.
Product available Ships in 2 days

MPL 50x20x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020165

GTIN/EAN: 5906301811718

5.00

length

50 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

75 g

Magnetization Direction

↑ axial

Load capacity

29.99 kg / 294.15 N

Magnetic Induction

337.18 mT / 3372 Gs

Coating

[NiCuNi] Nickel

43.05 with VAT / pcs + price for transport

35.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
35.00 ZŁ
43.05 ZŁ
price from 20 pcs
32.90 ZŁ
40.47 ZŁ
price from 80 pcs
30.80 ZŁ
37.88 ZŁ
Need help making a decision?

Call us +48 22 499 98 98 or get in touch by means of form our website.
Specifications as well as shape of a magnet can be calculated using our magnetic mass calculator.

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

Technical details - MPL 50x20x10 / N38 - lamellar magnet

Specification / characteristics - MPL 50x20x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020165
GTIN/EAN 5906301811718
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 50 mm [±0,1 mm]
Width 20 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 75 g
Magnetization Direction ↑ axial
Load capacity ~ ? 29.99 kg / 294.15 N
Magnetic Induction ~ ? 337.18 mT / 3372 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 50x20x10 / 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

These information represent the outcome of a mathematical analysis. Results were calculated on models for the material Nd2Fe14B. Operational conditions might slightly differ. Treat these data as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - power drop
MPL 50x20x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3371 Gs
337.1 mT
29.99 kg / 66.12 lbs
29990.0 g / 294.2 N
crushing
1 mm 3158 Gs
315.8 mT
26.32 kg / 58.03 lbs
26323.3 g / 258.2 N
crushing
2 mm 2932 Gs
293.2 mT
22.69 kg / 50.02 lbs
22687.6 g / 222.6 N
crushing
3 mm 2703 Gs
270.3 mT
19.29 kg / 42.52 lbs
19286.7 g / 189.2 N
crushing
5 mm 2266 Gs
226.6 mT
13.55 kg / 29.86 lbs
13546.3 g / 132.9 N
crushing
10 mm 1419 Gs
141.9 mT
5.31 kg / 11.71 lbs
5313.0 g / 52.1 N
warning
15 mm 908 Gs
90.8 mT
2.17 kg / 4.79 lbs
2174.5 g / 21.3 N
warning
20 mm 603 Gs
60.3 mT
0.96 kg / 2.12 lbs
961.0 g / 9.4 N
low risk
30 mm 296 Gs
29.6 mT
0.23 kg / 0.51 lbs
231.0 g / 2.3 N
low risk
50 mm 97 Gs
9.7 mT
0.02 kg / 0.05 lbs
24.8 g / 0.2 N
low risk

Table 2: Shear load (wall)
MPL 50x20x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 6.00 kg / 13.22 lbs
5998.0 g / 58.8 N
1 mm Stal (~0.2) 5.26 kg / 11.61 lbs
5264.0 g / 51.6 N
2 mm Stal (~0.2) 4.54 kg / 10.00 lbs
4538.0 g / 44.5 N
3 mm Stal (~0.2) 3.86 kg / 8.51 lbs
3858.0 g / 37.8 N
5 mm Stal (~0.2) 2.71 kg / 5.97 lbs
2710.0 g / 26.6 N
10 mm Stal (~0.2) 1.06 kg / 2.34 lbs
1062.0 g / 10.4 N
15 mm Stal (~0.2) 0.43 kg / 0.96 lbs
434.0 g / 4.3 N
20 mm Stal (~0.2) 0.19 kg / 0.42 lbs
192.0 g / 1.9 N
30 mm Stal (~0.2) 0.05 kg / 0.10 lbs
46.0 g / 0.5 N
50 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N

Table 3: Wall mounting (shearing) - vertical pull
MPL 50x20x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
9.00 kg / 19.83 lbs
8997.0 g / 88.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
6.00 kg / 13.22 lbs
5998.0 g / 58.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
3.00 kg / 6.61 lbs
2999.0 g / 29.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
15.00 kg / 33.06 lbs
14995.0 g / 147.1 N

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 50x20x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
1.50 kg / 3.31 lbs
1499.5 g / 14.7 N
1 mm
13%
3.75 kg / 8.26 lbs
3748.8 g / 36.8 N
2 mm
25%
7.50 kg / 16.53 lbs
7497.5 g / 73.6 N
3 mm
38%
11.25 kg / 24.79 lbs
11246.3 g / 110.3 N
5 mm
63%
18.74 kg / 41.32 lbs
18743.8 g / 183.9 N
10 mm
100%
29.99 kg / 66.12 lbs
29990.0 g / 294.2 N
11 mm
100%
29.99 kg / 66.12 lbs
29990.0 g / 294.2 N
12 mm
100%
29.99 kg / 66.12 lbs
29990.0 g / 294.2 N

Table 5: Working in heat (stability) - thermal limit
MPL 50x20x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 29.99 kg / 66.12 lbs
29990.0 g / 294.2 N
OK
40 °C -2.2% 29.33 kg / 64.66 lbs
29330.2 g / 287.7 N
OK
60 °C -4.4% 28.67 kg / 63.21 lbs
28670.4 g / 281.3 N
80 °C -6.6% 28.01 kg / 61.75 lbs
28010.7 g / 274.8 N
100 °C -28.8% 21.35 kg / 47.07 lbs
21352.9 g / 209.5 N

Table 6: Two magnets (repulsion) - field collision
MPL 50x20x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 70.06 kg / 154.45 lbs
4 789 Gs
10.51 kg / 23.17 lbs
10509 g / 103.1 N
N/A
1 mm 65.83 kg / 145.13 lbs
6 535 Gs
9.87 kg / 21.77 lbs
9874 g / 96.9 N
59.25 kg / 130.61 lbs
~0 Gs
2 mm 61.49 kg / 135.57 lbs
6 316 Gs
9.22 kg / 20.34 lbs
9224 g / 90.5 N
55.34 kg / 122.01 lbs
~0 Gs
3 mm 57.20 kg / 126.10 lbs
6 092 Gs
8.58 kg / 18.92 lbs
8580 g / 84.2 N
51.48 kg / 113.49 lbs
~0 Gs
5 mm 48.94 kg / 107.89 lbs
5 635 Gs
7.34 kg / 16.18 lbs
7341 g / 72.0 N
44.05 kg / 97.10 lbs
~0 Gs
10 mm 31.64 kg / 69.76 lbs
4 531 Gs
4.75 kg / 10.46 lbs
4747 g / 46.6 N
28.48 kg / 62.79 lbs
~0 Gs
20 mm 12.41 kg / 27.36 lbs
2 838 Gs
1.86 kg / 4.10 lbs
1862 g / 18.3 N
11.17 kg / 24.63 lbs
~0 Gs
50 mm 1.07 kg / 2.35 lbs
832 Gs
0.16 kg / 0.35 lbs
160 g / 1.6 N
0.96 kg / 2.12 lbs
~0 Gs
60 mm 0.54 kg / 1.19 lbs
592 Gs
0.08 kg / 0.18 lbs
81 g / 0.8 N
0.49 kg / 1.07 lbs
~0 Gs
70 mm 0.29 kg / 0.64 lbs
433 Gs
0.04 kg / 0.10 lbs
43 g / 0.4 N
0.26 kg / 0.57 lbs
~0 Gs
80 mm 0.16 kg / 0.36 lbs
324 Gs
0.02 kg / 0.05 lbs
24 g / 0.2 N
0.15 kg / 0.32 lbs
~0 Gs
90 mm 0.10 kg / 0.21 lbs
248 Gs
0.01 kg / 0.03 lbs
14 g / 0.1 N
0.09 kg / 0.19 lbs
~0 Gs
100 mm 0.06 kg / 0.13 lbs
194 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
0.05 kg / 0.11 lbs
~0 Gs

Table 7: Protective zones (implants) - warnings
MPL 50x20x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 15.5 cm
Hearing aid 10 Gs (1.0 mT) 12.0 cm
Mechanical watch 20 Gs (2.0 mT) 9.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 7.5 cm
Car key 50 Gs (5.0 mT) 7.0 cm
Payment card 400 Gs (40.0 mT) 3.0 cm
HDD hard drive 600 Gs (60.0 mT) 2.5 cm

Table 8: Collisions (kinetic energy) - warning
MPL 50x20x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.29 km/h
(6.19 m/s)
1.44 J
30 mm 35.10 km/h
(9.75 m/s)
3.56 J
50 mm 45.12 km/h
(12.53 m/s)
5.89 J
100 mm 63.77 km/h
(17.72 m/s)
11.77 J

Table 9: Anti-corrosion coating durability
MPL 50x20x10 / 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 50x20x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 32 980 Mx 329.8 µWb
Pc Coefficient 0.38 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 50x20x10 / N38

Environment Effective steel pull Effect
Air (land) 29.99 kg Standard
Water (riverbed) 34.34 kg
(+4.35 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Wall mount (shear)

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

2. Steel thickness impact

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

3. Power loss vs temp

*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) = 0.38

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 specification and ecology
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: 020165-2026
Magnet Unit Converter
Pulling force

Magnetic Induction

Other deals

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 50x20x10 mm and a weight of 75 g, guarantees premium class connection. As a magnetic bar with high power (approx. 29.99 kg), this product is available off-the-shelf from our warehouse in Poland. 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. Watch your fingers! Magnets with a force of 29.99 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 50x20x10 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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. 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: 50 mm (length), 20 mm (width), and 10 mm (thickness). It is a magnetic block with dimensions 50x20x10 mm and a self-weight of 75 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose power, even over around 10 years – the drop in strength is only ~1% (based on measurements),
  • They are resistant to demagnetization induced by external field influence,
  • Thanks to the shiny finish, the plating of Ni-Cu-Ni, gold, or silver gives an modern appearance,
  • Neodymium magnets achieve maximum magnetic induction on a their surface, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
  • Thanks to modularity in forming and the capacity to adapt to client solutions,
  • Versatile presence in future technologies – they are used in magnetic memories, electric motors, precision medical tools, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in small systems

Limitations

Disadvantages of NdFeB magnets:
  • At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated shapes in magnets, we propose using cover - magnetic mechanism.
  • Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these products are able to be problematic in diagnostics medical when they are in the body.
  • Due to neodymium price, their price is relatively high,

Pull force analysis

Maximum holding power of the magnet – what affects it?

Breakaway force was determined for ideal contact conditions, assuming:
  • using a sheet made of mild steel, acting as a magnetic yoke
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • characterized by smoothness
  • without the slightest clearance between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • at conditions approx. 20°C

What influences lifting capacity in practice

Please note that the application force will differ influenced by elements below, starting with the most relevant:
  • Air gap (betwixt the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Base massiveness – insufficiently thick steel does not close the flux, causing part of the flux to be escaped into the air.
  • Metal type – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets
No play value

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are life-threatening.

Crushing risk

Large magnets can smash fingers instantly. Under no circumstances place your hand between two attracting surfaces.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Magnetic interference

A strong magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.

Power loss in heat

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

Shattering risk

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Fire risk

Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Powerful field

Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their power.

Implant safety

For implant holders: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Safe distance

Intense magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Security! Need more info? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98