MPL 200x30x30 / N38 - lamellar magnet
lamellar magnet
Catalog no 020125
GTIN/EAN: 5906301811312
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 ZŁ with VAT / pcs + price for transport
457.95 ZŁ net + 23% VAT / pcs
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Product card - MPL 200x30x30 / N38 - lamellar magnet
Specification / characteristics - MPL 200x30x30 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020125 |
| GTIN/EAN | 5906301811312 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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 |
|
9.58 kg / 21.12 pounds
9579.3 g / 94.0 N
|
| 1 mm |
|
23.95 kg / 52.80 pounds
23948.3 g / 234.9 N
|
| 2 mm |
|
47.90 kg / 105.59 pounds
47896.7 g / 469.9 N
|
| 3 mm |
|
71.85 kg / 158.39 pounds
71845.0 g / 704.8 N
|
| 5 mm |
|
119.74 kg / 263.98 pounds
119741.7 g / 1174.7 N
|
| 10 mm |
|
239.48 kg / 527.97 pounds
239483.3 g / 2349.3 N
|
| 11 mm |
|
263.43 kg / 580.77 pounds
263431.7 g / 2584.3 N
|
| 12 mm |
|
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% |
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.
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 |
Other offers
Pros as well as cons of neodymium magnets.
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
- 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 force – what contributes to it?
- 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
- 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.
