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
bulk discounts:
Need more?
Give us a call
+48 888 99 98 98
otherwise drop us a message using
form
the contact section.
Parameters and appearance of a neodymium magnet can be estimated on our
our magnetic calculator.
Same-day shipping for orders placed before 14:00.
Technical specification of the product - 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 |
Engineering simulation of the assembly - data
These information constitute the direct effect of a physical analysis. Values were calculated on algorithms for the material Nd2Fe14B. Operational conditions might slightly deviate from the simulation results. Please consider these calculations as a supplementary guide for designers.
Table 1: Static force (force 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 pounds
287380.0 g / 2819.2 N
|
critical level |
| 1 mm |
4241 Gs
424.1 mT
|
260.91 kg / 575.21 pounds
260910.0 g / 2559.5 N
|
critical level |
| 2 mm |
4028 Gs
402.8 mT
|
235.43 kg / 519.04 pounds
235433.0 g / 2309.6 N
|
critical level |
| 3 mm |
3818 Gs
381.8 mT
|
211.49 kg / 466.26 pounds
211490.2 g / 2074.7 N
|
critical level |
| 5 mm |
3412 Gs
341.2 mT
|
168.87 kg / 372.30 pounds
168870.4 g / 1656.6 N
|
critical level |
| 10 mm |
2539 Gs
253.9 mT
|
93.54 kg / 206.22 pounds
93539.2 g / 917.6 N
|
critical level |
| 15 mm |
1902 Gs
190.2 mT
|
52.48 kg / 115.70 pounds
52481.2 g / 514.8 N
|
critical level |
| 20 mm |
1457 Gs
145.7 mT
|
30.79 kg / 67.88 pounds
30789.8 g / 302.0 N
|
critical level |
| 30 mm |
920 Gs
92.0 mT
|
12.29 kg / 27.09 pounds
12288.2 g / 120.5 N
|
critical level |
| 50 mm |
456 Gs
45.6 mT
|
3.02 kg / 6.65 pounds
3016.4 g / 29.6 N
|
strong |
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 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: 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 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 (substrate influence) - power losses
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 (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 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 (attraction) - forces in the system
MPL 200x30x30 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (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 (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 |
| Phone / Smartphone | 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: Collisions (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: 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: Construction 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% |
1. Sliding resistance
*Warning: On a vertical wall, the magnet holds just a fraction of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) significantly reduces the holding force.
3. Heat tolerance
*For standard magnets, the max working temp 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Strengths as well as weaknesses of neodymium magnets.
Strengths
- Their strength is maintained, and after around 10 years it drops only by ~1% (theoretically),
- They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
- The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to look better,
- Magnets are distinguished by very high magnetic induction on the outer layer,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Due to the possibility of flexible molding and customization to unique projects, neodymium magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
- Huge importance in future technologies – they find application in mass storage devices, drive modules, medical devices, as well as technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex forms.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to disrupt the diagnostic process medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Magnetic strength at its maximum – what contributes to it?
- on a base made of mild steel, perfectly concentrating the magnetic flux
- possessing a massiveness of min. 10 mm to avoid saturation
- characterized by even structure
- under conditions of ideal adhesion (surface-to-surface)
- during pulling in a direction vertical to the plane
- at room temperature
Magnet lifting force in use – key factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
- Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was assessed using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the holding force.
Warnings
Danger to the youngest
NdFeB magnets are not toys. Eating multiple magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates immediate surgery.
Do not drill into magnets
Fire warning: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.
Magnets are brittle
Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Magnetic interference
A powerful magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Keep magnets near a smartphone to prevent damaging the sensors.
Cards and drives
Very strong magnetic fields can erase data on credit cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.
Handling guide
Use magnets consciously. Their immense force can shock even experienced users. Plan your moves and do not underestimate their force.
ICD Warning
Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Bodily injuries
Pinching hazard: The pulling power is so great that it can result in blood blisters, crushing, and broken bones. Use thick gloves.
Allergy Warning
Medical facts indicate that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, prevent direct skin contact and opt for versions in plastic housing.
Thermal limits
Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.
