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:
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Physical properties - 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 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 |
|
9.58 kg / 21.12 LBS
9579.3 g / 94.0 N
|
| 1 mm |
|
23.95 kg / 52.80 LBS
23948.3 g / 234.9 N
|
| 2 mm |
|
47.90 kg / 105.59 LBS
47896.7 g / 469.9 N
|
| 3 mm |
|
71.85 kg / 158.39 LBS
71845.0 g / 704.8 N
|
| 5 mm |
|
119.74 kg / 263.98 LBS
119741.7 g / 1174.7 N
|
| 10 mm |
|
239.48 kg / 527.97 LBS
239483.3 g / 2349.3 N
|
| 11 mm |
|
263.43 kg / 580.77 LBS
263431.7 g / 2584.3 N
|
| 12 mm |
|
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% |
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.
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 |
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Pros and cons of Nd2Fe14B magnets.
Strengths
- 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
- 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 parameters – what affects it?
- 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
- 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.
