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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

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Technical data - 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

Physical modeling of the magnet - data

The following data represent the outcome of a mathematical analysis. Results were calculated on models for the material Nd2Fe14B. Real-world conditions might slightly differ. Treat these data as a reference point when designing systems.

Table 1: Static 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 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: Sliding 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 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: Vertical assembly (shearing) - vertical pull
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 (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 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 (repulsion) - field range
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
Mechanical watch 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 (kinetic energy) - warning
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: Surface protection spec
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: 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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Note: On a vertical surface, the magnet holds just ~20% of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically limits the holding force.

3. Heat tolerance

*For N38 grade, 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

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%
Environmental data
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
Measurement Calculator
Pulling force

Field Strength

Check out more products

This product is a very powerful magnet in the shape of a plate 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.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. 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 magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 287.38 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 200x30x30 / N38, it is best to use strong epoxy glues (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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
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. 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 power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Benefits

Besides their exceptional field intensity, neodymium magnets offer the following advantages:
  • They do not lose strength, even after nearly ten years – the drop in lifting capacity is only ~1% (according to tests),
  • They are resistant to demagnetization induced by external disturbances,
  • In other words, due to the aesthetic layer of nickel, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Possibility of individual forming and modifying to atypical conditions,
  • Universal use in electronics industry – they find application in mass storage devices, motor assemblies, medical equipment, and modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • 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. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
  • Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Additionally, small components of these devices are able to be problematic in diagnostics medical when they are in the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Maximum lifting capacity of the magnetwhat contributes to it?

Breakaway force was determined for the most favorable conditions, taking into account:
  • on a base made of structural steel, effectively closing the magnetic field
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with an ideally smooth contact surface
  • without any clearance between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Practical lifting capacity: influencing factors

Holding efficiency impacted by working environment parameters, including (from most important):
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Base massiveness – too thin plate does not close the flux, causing part of the flux to be wasted into the air.
  • Material type – ideal substrate is pure iron steel. Hardened steels may attract less.
  • Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces weaken the grip.
  • Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

Safety rules for work with NdFeB magnets
Warning for heart patients

People with a pacemaker should maintain an large gap from magnets. The magnetic field can stop the functioning of the implant.

GPS Danger

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

Data carriers

Intense magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Swallowing risk

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are tragic.

Combustion hazard

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Crushing force

Risk of injury: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Handling guide

Use magnets consciously. Their immense force can surprise even professionals. Be vigilant and respect their power.

Sensitization to coating

Medical facts indicate that nickel (the usual finish) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or select versions in plastic housing.

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Protective goggles

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them breaking into small pieces.

Caution! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98