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MPL 200x30x30 / N38 - lamellar magnet

lamellar magnet

Catalog no 020125

GTIN/EAN: 5906301811312

5.00

length

200 mm [±0,1 mm]

Width

30 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

1350 g

Magnetization Direction

↑ axial

Load capacity

287.38 kg / 2819.19 N

Magnetic Induction

445.15 mT / 4451 Gs

Coating

[NiCuNi] Nickel

563.28 with VAT / pcs + price for transport

457.95 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
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Lifting power along with shape of neodymium magnets can be tested with our modular calculator.

Orders placed before 14:00 will be shipped the same business day.

Physical properties - MPL 200x30x30 / N38 - lamellar magnet

Specification / characteristics - MPL 200x30x30 / N38 - lamellar magnet

properties
properties values
Cat. no. 020125
GTIN/EAN 5906301811312
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 200 mm [±0,1 mm]
Width 30 mm [±0,1 mm]
Height 30 mm [±0,1 mm]
Weight 1350 g
Magnetization Direction ↑ axial
Load capacity ~ ? 287.38 kg / 2819.19 N
Magnetic Induction ~ ? 445.15 mT / 4451 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 200x30x30 / 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

Technical simulation of the product - technical parameters

The following information represent the outcome of a mathematical calculation. Values are based on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ from theoretical values. Please consider these data as a reference point when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MPL 200x30x30 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4451 Gs
445.1 mT
287.38 kg / 633.56 LBS
287380.0 g / 2819.2 N
crushing
1 mm 4241 Gs
424.1 mT
260.91 kg / 575.21 LBS
260910.0 g / 2559.5 N
crushing
2 mm 4028 Gs
402.8 mT
235.43 kg / 519.04 LBS
235433.0 g / 2309.6 N
crushing
3 mm 3818 Gs
381.8 mT
211.49 kg / 466.26 LBS
211490.2 g / 2074.7 N
crushing
5 mm 3412 Gs
341.2 mT
168.87 kg / 372.30 LBS
168870.4 g / 1656.6 N
crushing
10 mm 2539 Gs
253.9 mT
93.54 kg / 206.22 LBS
93539.2 g / 917.6 N
crushing
15 mm 1902 Gs
190.2 mT
52.48 kg / 115.70 LBS
52481.2 g / 514.8 N
crushing
20 mm 1457 Gs
145.7 mT
30.79 kg / 67.88 LBS
30789.8 g / 302.0 N
crushing
30 mm 920 Gs
92.0 mT
12.29 kg / 27.09 LBS
12288.2 g / 120.5 N
crushing
50 mm 456 Gs
45.6 mT
3.02 kg / 6.65 LBS
3016.4 g / 29.6 N
warning

Table 2: Shear force (wall)
MPL 200x30x30 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 57.48 kg / 126.71 LBS
57476.0 g / 563.8 N
1 mm Stal (~0.2) 52.18 kg / 115.04 LBS
52182.0 g / 511.9 N
2 mm Stal (~0.2) 47.09 kg / 103.81 LBS
47086.0 g / 461.9 N
3 mm Stal (~0.2) 42.30 kg / 93.25 LBS
42298.0 g / 414.9 N
5 mm Stal (~0.2) 33.77 kg / 74.46 LBS
33774.0 g / 331.3 N
10 mm Stal (~0.2) 18.71 kg / 41.24 LBS
18708.0 g / 183.5 N
15 mm Stal (~0.2) 10.50 kg / 23.14 LBS
10496.0 g / 103.0 N
20 mm Stal (~0.2) 6.16 kg / 13.58 LBS
6158.0 g / 60.4 N
30 mm Stal (~0.2) 2.46 kg / 5.42 LBS
2458.0 g / 24.1 N
50 mm Stal (~0.2) 0.60 kg / 1.33 LBS
604.0 g / 5.9 N

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 200x30x30 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
86.21 kg / 190.07 LBS
86214.0 g / 845.8 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
57.48 kg / 126.71 LBS
57476.0 g / 563.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
28.74 kg / 63.36 LBS
28738.0 g / 281.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
143.69 kg / 316.78 LBS
143690.0 g / 1409.6 N

Table 4: Steel thickness (substrate influence) - power losses
MPL 200x30x30 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
3%
9.58 kg / 21.12 LBS
9579.3 g / 94.0 N
1 mm
8%
23.95 kg / 52.80 LBS
23948.3 g / 234.9 N
2 mm
17%
47.90 kg / 105.59 LBS
47896.7 g / 469.9 N
3 mm
25%
71.85 kg / 158.39 LBS
71845.0 g / 704.8 N
5 mm
42%
119.74 kg / 263.98 LBS
119741.7 g / 1174.7 N
10 mm
83%
239.48 kg / 527.97 LBS
239483.3 g / 2349.3 N
11 mm
92%
263.43 kg / 580.77 LBS
263431.7 g / 2584.3 N
12 mm
100%
287.38 kg / 633.56 LBS
287380.0 g / 2819.2 N

Table 5: Working in heat (material behavior) - power drop
MPL 200x30x30 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 287.38 kg / 633.56 LBS
287380.0 g / 2819.2 N
OK
40 °C -2.2% 281.06 kg / 619.63 LBS
281057.6 g / 2757.2 N
OK
60 °C -4.4% 274.74 kg / 605.69 LBS
274735.3 g / 2695.2 N
80 °C -6.6% 268.41 kg / 591.75 LBS
268412.9 g / 2633.1 N
100 °C -28.8% 204.61 kg / 451.10 LBS
204614.6 g / 2007.3 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 200x30x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 732.71 kg / 1615.35 LBS
5 371 Gs
109.91 kg / 242.30 LBS
109907 g / 1078.2 N
N/A
1 mm 698.96 kg / 1540.95 LBS
8 694 Gs
104.84 kg / 231.14 LBS
104845 g / 1028.5 N
629.07 kg / 1386.85 LBS
~0 Gs
2 mm 665.22 kg / 1466.57 LBS
8 481 Gs
99.78 kg / 219.99 LBS
99784 g / 978.9 N
598.70 kg / 1319.91 LBS
~0 Gs
3 mm 632.29 kg / 1393.97 LBS
8 269 Gs
94.84 kg / 209.10 LBS
94844 g / 930.4 N
569.07 kg / 1254.57 LBS
~0 Gs
5 mm 569.22 kg / 1254.92 LBS
7 846 Gs
85.38 kg / 188.24 LBS
85383 g / 837.6 N
512.30 kg / 1129.42 LBS
~0 Gs
10 mm 430.56 kg / 949.22 LBS
6 823 Gs
64.58 kg / 142.38 LBS
64584 g / 633.6 N
387.50 kg / 854.29 LBS
~0 Gs
20 mm 238.49 kg / 525.78 LBS
5 078 Gs
35.77 kg / 78.87 LBS
35774 g / 350.9 N
214.64 kg / 473.20 LBS
~0 Gs
50 mm 48.45 kg / 106.82 LBS
2 289 Gs
7.27 kg / 16.02 LBS
7268 g / 71.3 N
43.61 kg / 96.13 LBS
~0 Gs
60 mm 31.33 kg / 69.07 LBS
1 841 Gs
4.70 kg / 10.36 LBS
4700 g / 46.1 N
28.20 kg / 62.16 LBS
~0 Gs
70 mm 21.09 kg / 46.49 LBS
1 510 Gs
3.16 kg / 6.97 LBS
3163 g / 31.0 N
18.98 kg / 41.84 LBS
~0 Gs
80 mm 14.67 kg / 32.35 LBS
1 260 Gs
2.20 kg / 4.85 LBS
2201 g / 21.6 N
13.21 kg / 29.12 LBS
~0 Gs
90 mm 10.50 kg / 23.15 LBS
1 066 Gs
1.58 kg / 3.47 LBS
1575 g / 15.5 N
9.45 kg / 20.83 LBS
~0 Gs
100 mm 7.69 kg / 16.95 LBS
912 Gs
1.15 kg / 2.54 LBS
1154 g / 11.3 N
6.92 kg / 15.26 LBS
~0 Gs

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 200x30x30 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 39.5 cm
Hearing aid 10 Gs (1.0 mT) 30.5 cm
Timepiece 20 Gs (2.0 mT) 23.5 cm
Mobile device 40 Gs (4.0 mT) 18.0 cm
Remote 50 Gs (5.0 mT) 16.5 cm
Payment card 400 Gs (40.0 mT) 5.5 cm
HDD hard drive 600 Gs (60.0 mT) 4.5 cm

Table 8: Impact energy (cracking risk) - collision effects
MPL 200x30x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 17.45 km/h
(4.85 m/s)
15.86 J
30 mm 26.16 km/h
(7.27 m/s)
35.64 J
50 mm 33.12 km/h
(9.20 m/s)
57.12 J
100 mm 46.56 km/h
(12.93 m/s)
112.90 J

Table 9: Corrosion resistance
MPL 200x30x30 / 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 200x30x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 221 734 Mx 2217.3 µWb
Pc Coefficient 0.45 Low (Flat)

Table 11: Underwater work (magnet fishing)
MPL 200x30x30 / N38

Environment Effective steel pull Effect
Air (land) 287.38 kg Standard
Water (riverbed) 329.05 kg
(+41.67 kg buoyancy gain)
+14.5%
Corrosion warning: 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 holds just approx. 20-30% of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) drastically limits the holding force.

3. Thermal stability

*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) = 0.45

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: 020125-2026
Magnet Unit Converter
Pulling force

Magnetic Induction

Check out also products

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 200x30x30 mm and a weight of 1350 g, guarantees the highest quality connection. This magnetic block with a force of 2819.19 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 shifting 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 200x30x30 / 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. Thanks to the flat surface and high force (approx. 287.38 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.
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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 200x30x30 / N38 model is magnetized through the thickness (dimension 30 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 200x30x30 mm, which, at a weight of 1350 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 287.38 kg (force ~2819.19 N), which, with such a compact shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of Nd2Fe14B magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for almost 10 years – the drop is just ~1% (in theory),
  • Neodymium magnets are remarkably resistant to loss of magnetic properties caused by external interference,
  • A magnet with a metallic nickel surface looks better,
  • Magnets are characterized by excellent magnetic induction on the working surface,
  • 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...
  • Thanks to freedom in designing and the capacity to adapt to complex applications,
  • Universal use in advanced technology sectors – they are used in magnetic memories, brushless drives, medical devices, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, 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 power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of making nuts in the magnet and complex forms - recommended is casing - magnet mounting.
  • Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Best holding force of the magnet in ideal parameterswhat affects it?

The lifting capacity listed is a result of laboratory testing performed under the following configuration:
  • with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • characterized by even structure
  • without the slightest air gap between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • at ambient temperature room level

What influences lifting capacity in practice

Real force is affected by specific conditions, mainly (from most important):
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material type – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the holding force.

Warnings
Implant safety

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Keep away from computers

Avoid bringing magnets near a purse, computer, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Protective goggles

Neodymium magnets are ceramic materials, which means they are very brittle. Impact of two magnets leads to them breaking into shards.

Do not drill into magnets

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Nickel coating and allergies

It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent touching magnets with bare hands or opt for encased magnets.

Keep away from children

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

Thermal limits

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. The loss of strength is permanent.

GPS Danger

Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Respect the power

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Crushing force

Large magnets can crush fingers in a fraction of a second. Never place your hand betwixt two strong magnets.

Important! Looking for details? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98