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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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Product card - 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 modeling of the assembly - technical parameters

These values represent the result of a engineering calculation. Values rely on models for the material Nd2Fe14B. Operational conditions may deviate from the simulation results. Please consider these data as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - characteristics
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 pounds
287380.0 g / 2819.2 N
dangerous!
1 mm 4241 Gs
424.1 mT
260.91 kg / 575.21 pounds
260910.0 g / 2559.5 N
dangerous!
2 mm 4028 Gs
402.8 mT
235.43 kg / 519.04 pounds
235433.0 g / 2309.6 N
dangerous!
3 mm 3818 Gs
381.8 mT
211.49 kg / 466.26 pounds
211490.2 g / 2074.7 N
dangerous!
5 mm 3412 Gs
341.2 mT
168.87 kg / 372.30 pounds
168870.4 g / 1656.6 N
dangerous!
10 mm 2539 Gs
253.9 mT
93.54 kg / 206.22 pounds
93539.2 g / 917.6 N
dangerous!
15 mm 1902 Gs
190.2 mT
52.48 kg / 115.70 pounds
52481.2 g / 514.8 N
dangerous!
20 mm 1457 Gs
145.7 mT
30.79 kg / 67.88 pounds
30789.8 g / 302.0 N
dangerous!
30 mm 920 Gs
92.0 mT
12.29 kg / 27.09 pounds
12288.2 g / 120.5 N
dangerous!
50 mm 456 Gs
45.6 mT
3.02 kg / 6.65 pounds
3016.4 g / 29.6 N
medium risk

Table 2: Slippage load (vertical surface)
MPL 200x30x30 / N38

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

Table 3: Wall mounting (sliding) - 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 pounds
86214.0 g / 845.8 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
57.48 kg / 126.71 pounds
57476.0 g / 563.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
28.74 kg / 63.36 pounds
28738.0 g / 281.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
143.69 kg / 316.78 pounds
143690.0 g / 1409.6 N

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 200x30x30 / N38

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

Table 5: Thermal stability (stability) - thermal limit
MPL 200x30x30 / N38

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

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

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

Table 7: Protective zones (electronics) - warnings
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: Dynamics (kinetic energy) - 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: Coating parameters (durability)
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: Electrical data (Pc)
MPL 200x30x30 / N38

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

Table 11: Hydrostatics and buoyancy
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%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

*Caution: On a vertical wall, the magnet retains only ~20% of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically reduces 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) = 0.45

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.

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: 020125-2026
Magnet Unit Converter
Pulling force

Field Strength

Other offers

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 200x30x30 mm and a weight of 1350 g, guarantees premium class connection. This rectangular block with a force of 2819.19 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
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 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.
Plate magnets MPL 200x30x30 / 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. 287.38 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 200x30x30 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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. In practice, this means that this magnet has the greatest attraction force on its main planes (200x30 mm), which is ideal for flat mounting. 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. It is a magnetic block with dimensions 200x30x30 mm and a self-weight of 1350 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of neodymium magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:
  • They do not lose power, even over around ten years – the decrease in lifting capacity is only ~1% (based on measurements),
  • They feature excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • In other words, due to the glossy surface of silver, the element looks attractive,
  • Magnetic induction on the top side of the magnet turns out to be extremely intense,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of custom forming and adapting to precise applications,
  • Significant place in electronics industry – they are commonly used in hard drives, brushless drives, diagnostic systems, as well as technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of creating nuts in the magnet and complicated forms - recommended is a housing - mounting mechanism.
  • Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical when they are in the body.
  • Due to neodymium price, their price is relatively high,

Lifting parameters

Maximum magnetic pulling forcewhat contributes to it?

The specified lifting capacity refers to the maximum value, recorded under optimal environment, namely:
  • with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • with an ground touching surface
  • under conditions of no distance (surface-to-surface)
  • during pulling in a direction vertical to the mounting surface
  • at standard ambient temperature

Magnet lifting force in use – key factors

Bear in mind that the application force may be lower influenced by elements below, starting with the most relevant:
  • Clearance – existence of foreign body (paint, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Steel thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be escaped into the air.
  • Steel type – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and lifting capacity.
  • Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets
Crushing risk

Danger of trauma: The pulling power is so great that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Permanent damage

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

Warning for heart patients

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

No play value

Only for adults. Tiny parts can be swallowed, causing serious injuries. Store away from kids and pets.

Handling guide

Handle with care. Neodymium magnets act from a long distance and snap with massive power, often faster than you can react.

GPS and phone interference

A strong magnetic field negatively affects the operation of magnetometers in smartphones and GPS navigation. Maintain magnets near a device to prevent damaging the sensors.

Do not drill into magnets

Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Magnet fragility

NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them cracking into shards.

Keep away from computers

Very strong magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Nickel coating and allergies

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness appears, immediately stop working with magnets and wear gloves.

Danger! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98