MPL 50x20x5 / N38 - lamellar magnet
lamellar magnet
Catalog no 020473
GTIN: 5906301811930
length
50 mm [±0,1 mm]
Width
20 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
37.5 g
Magnetization Direction
↑ axial
Load capacity
12.69 kg / 124.48 N
Magnetic Induction
197.73 mT / 1977 Gs
Coating
[NiCuNi] Nickel
14.56 ZŁ with VAT / pcs + price for transport
11.84 ZŁ net + 23% VAT / pcs
bulk discounts:
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MPL 50x20x5 / N38 - lamellar magnet
Specification / characteristics MPL 50x20x5 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020473 |
| GTIN | 5906301811930 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 50 mm [±0,1 mm] |
| Width | 20 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 37.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 12.69 kg / 124.48 N |
| Magnetic Induction ~ ? | 197.73 mT / 1977 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 | T |
| 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 106 | °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 analysis of the product - technical parameters
Presented values constitute the outcome of a mathematical simulation. Values rely on models for the material NdFeB. Actual conditions may deviate from the simulation results. Use these calculations as a supplementary guide during assembly planning.
MPL 50x20x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
1977 Gs
197.7 mT
|
12.69 kg / 12690.0 g
124.5 N
|
crushing |
| 1 mm |
1885 Gs
188.5 mT
|
11.53 kg / 11530.3 g
113.1 N
|
crushing |
| 2 mm |
1772 Gs
177.2 mT
|
10.20 kg / 10199.9 g
100.1 N
|
crushing |
| 3 mm |
1649 Gs
164.9 mT
|
8.83 kg / 8831.3 g
86.6 N
|
warning |
| 5 mm |
1395 Gs
139.5 mT
|
6.32 kg / 6320.3 g
62.0 N
|
warning |
| 10 mm |
870 Gs
87.0 mT
|
2.46 kg / 2459.4 g
24.1 N
|
warning |
| 15 mm |
549 Gs
54.9 mT
|
0.98 kg / 976.9 g
9.6 N
|
low risk |
| 20 mm |
359 Gs
35.9 mT
|
0.42 kg / 418.9 g
4.1 N
|
low risk |
| 30 mm |
172 Gs
17.2 mT
|
0.10 kg / 95.7 g
0.9 N
|
low risk |
| 50 mm |
54 Gs
5.4 mT
|
0.01 kg / 9.5 g
0.1 N
|
low risk |
MPL 50x20x5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
2.54 kg / 2538.0 g
24.9 N
|
| 1 mm | Stal (~0.2) |
2.31 kg / 2306.0 g
22.6 N
|
| 2 mm | Stal (~0.2) |
2.04 kg / 2040.0 g
20.0 N
|
| 3 mm | Stal (~0.2) |
1.77 kg / 1766.0 g
17.3 N
|
| 5 mm | Stal (~0.2) |
1.26 kg / 1264.0 g
12.4 N
|
| 10 mm | Stal (~0.2) |
0.49 kg / 492.0 g
4.8 N
|
| 15 mm | Stal (~0.2) |
0.20 kg / 196.0 g
1.9 N
|
| 20 mm | Stal (~0.2) |
0.08 kg / 84.0 g
0.8 N
|
| 30 mm | Stal (~0.2) |
0.02 kg / 20.0 g
0.2 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 2.0 g
0.0 N
|
MPL 50x20x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
3.81 kg / 3807.0 g
37.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
2.54 kg / 2538.0 g
24.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.27 kg / 1269.0 g
12.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
6.35 kg / 6345.0 g
62.2 N
|
MPL 50x20x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.63 kg / 634.5 g
6.2 N
|
| 1 mm |
|
1.59 kg / 1586.3 g
15.6 N
|
| 2 mm |
|
3.17 kg / 3172.5 g
31.1 N
|
| 5 mm |
|
7.93 kg / 7931.2 g
77.8 N
|
| 10 mm |
|
12.69 kg / 12690.0 g
124.5 N
|
MPL 50x20x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
12.69 kg / 12690.0 g
124.5 N
|
OK |
| 40 °C | -2.2% |
12.41 kg / 12410.8 g
121.8 N
|
OK |
| 60 °C | -4.4% |
12.13 kg / 12131.6 g
119.0 N
|
|
| 80 °C | -6.6% |
11.85 kg / 11852.5 g
116.3 N
|
|
| 100 °C | -28.8% |
9.04 kg / 9035.3 g
88.6 N
|
MPL 50x20x5 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
24.10 kg / 24097 g
236.4 N
3 371 Gs
|
N/A |
| 1 mm |
23.06 kg / 23059 g
226.2 N
3 868 Gs
|
20.75 kg / 20753 g
203.6 N
~0 Gs
|
| 2 mm |
21.89 kg / 21894 g
214.8 N
3 769 Gs
|
19.71 kg / 19705 g
193.3 N
~0 Gs
|
| 3 mm |
20.65 kg / 20654 g
202.6 N
3 661 Gs
|
18.59 kg / 18589 g
182.4 N
~0 Gs
|
| 5 mm |
18.07 kg / 18065 g
177.2 N
3 424 Gs
|
16.26 kg / 16259 g
159.5 N
~0 Gs
|
| 10 mm |
12.00 kg / 12002 g
117.7 N
2 790 Gs
|
10.80 kg / 10801 g
106.0 N
~0 Gs
|
| 20 mm |
4.67 kg / 4670 g
45.8 N
1 741 Gs
|
4.20 kg / 4203 g
41.2 N
~0 Gs
|
| 50 mm |
0.37 kg / 368 g
3.6 N
488 Gs
|
0.33 kg / 331 g
3.2 N
~0 Gs
|
MPL 50x20x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 12.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 9.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 7.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 6.0 cm |
| Car key | 50 Gs (5.0 mT) | 5.5 cm |
| Payment card | 400 Gs (40.0 mT) | 2.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
MPL 50x20x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
20.68 km/h
(5.74 m/s)
|
0.62 J | |
| 30 mm |
32.28 km/h
(8.97 m/s)
|
1.51 J | |
| 50 mm |
41.50 km/h
(11.53 m/s)
|
2.49 J | |
| 100 mm |
58.67 km/h
(16.30 m/s)
|
4.98 J |
MPL 50x20x5 / 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) |
MPL 50x20x5 / N38
| Parameter | Value | Jedn. SI / Opis |
|---|---|---|
| Strumień (Flux) | 20 792 Mx | 207.9 µWb |
| Współczynnik Pc | 0.21 | Niski (Płaski) |
MPL 50x20x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 12.69 kg | Standard |
| Water (riverbed) |
14.53 kg
(+1.84 kg Buoyancy gain)
|
+14.5% |
1. Montaż na Ścianie (Ześlizg)
*Uwaga: Na pionowej ścianie magnes utrzyma tylko ok. 20-30% tego co na suficie.
2. Wpływ Grubości Blachy
*Cienka blacha (np. obudowa PC 0.5mm) drastycznie osłabia magnes.
3. Wytrzymałość Temperaturowa
*Dla materiału N38 granica bezpieczeństwa to 80°C.
Jak rozdzielać?
Nie próbuj odrywać magnesów siłą!
Zawsze zsuwaj je na bok krawędzi stołu.
Elektronika
Trzymaj z dala od dysków HDD, kart płatniczych i telefonów.
Rozruszniki Serca
Osoby z rozrusznikiem muszą zachować dystans min. 10 cm.
Nie dla dzieci
Ryzyko połknięcia. Połknięcie dwóch magnesów grozi śmiercią.
Kruchy materiał
Magnes to ceramika! Uderzenie o inny magnes spowoduje odpryski.
Do czego użyć tego magnesu?
Sprawdzone zastosowania dla wymiaru 15x10x2 mm
Elektronika i Czujniki
Idealny jako element wyzwalający dla czujników Halla oraz kontaktronów w systemach alarmowych. Płaski kształt (2mm) pozwala na ukrycie go w wąskich szczelinach obudowy.
Modelarstwo i Druk 3D
Stosowany do tworzenia niewidocznych zamknięć w modelach drukowanych 3D. Można go wprasować w wydruk lub wkleić w kieszeń zaprojektowaną w modelu CAD.
Meble i Fronty
Używany jako "domykacz" lekkich drzwiczek szafkowych, gdzie standardowe magnesy meblowe są za grube. Wymaga wklejenia w płytkie podfrezowanie.
Other deals
Pros as well as cons of neodymium magnets.
Besides their stability, neodymium magnets are valued for these benefits:
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- They feature excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
- In other words, due to the metallic layer of gold, the element gains a professional look,
- They feature high magnetic induction at the operating surface, making them more effective,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
- In view of the option of precise molding and adaptation to custom solutions, NdFeB magnets can be created in a broad palette of shapes and sizes, which expands the range of possible applications,
- Key role in modern industrial fields – they are utilized in magnetic memories, electric drive systems, advanced medical instruments, and industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
What to avoid - cons of neodymium magnets and proposals for their use:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- We suggest a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Best holding force of the magnet in ideal parameters – what affects it?
Information about lifting capacity is the result of a measurement for optimal configuration, assuming:
- using a sheet made of mild steel, acting as a magnetic yoke
- whose transverse dimension equals approx. 10 mm
- with a surface cleaned and smooth
- without the slightest air gap between the magnet and steel
- under vertical force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
Holding efficiency impacted by specific conditions, including (from most important):
- Distance – the presence of foreign body (rust, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Chemical composition of the base – mild steel gives the best results. Alloy steels decrease magnetic permeability and holding force.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.
* Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a small distance {between} the magnet’s surface and the plate reduces the holding force.
Pros as well as cons of neodymium magnets.
Besides their stability, neodymium magnets are valued for these benefits:
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- They feature excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
- In other words, due to the metallic layer of gold, the element gains a professional look,
- They feature high magnetic induction at the operating surface, making them more effective,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
- In view of the option of precise molding and adaptation to custom solutions, NdFeB magnets can be created in a broad palette of shapes and sizes, which expands the range of possible applications,
- Key role in modern industrial fields – they are utilized in magnetic memories, electric drive systems, advanced medical instruments, and industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
What to avoid - cons of neodymium magnets and proposals for their use:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- We suggest a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Best holding force of the magnet in ideal parameters – what affects it?
Information about lifting capacity is the result of a measurement for optimal configuration, assuming:
- using a sheet made of mild steel, acting as a magnetic yoke
- whose transverse dimension equals approx. 10 mm
- with a surface cleaned and smooth
- without the slightest air gap between the magnet and steel
- under vertical force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
Holding efficiency impacted by specific conditions, including (from most important):
- Distance – the presence of foreign body (rust, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Chemical composition of the base – mild steel gives the best results. Alloy steels decrease magnetic permeability and holding force.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.
* Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a small distance {between} the magnet’s surface and the plate reduces the holding force.
Warnings
Demagnetization risk
Do not overheat. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).
Compass and GPS
Navigation devices and mobile phones are extremely susceptible to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Eye protection
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
Safe operation
Handle with care. Neodymium magnets attract from a distance and snap with huge force, often quicker than you can move away.
Combustion hazard
Dust created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Metal Allergy
It is widely known that the nickel plating (the usual finish) is a common allergen. If you have an allergy, prevent direct skin contact and select encased magnets.
Danger to the youngest
Neodymium magnets are not toys. Eating several magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.
Electronic hazard
Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Physical harm
Big blocks can break fingers instantly. Do not put your hand between two attracting surfaces.
Medical interference
People with a ICD must maintain an absolute distance from magnets. The magnetic field can interfere with the functioning of the life-saving device.
Danger!
Details about risks in the article: Magnet Safety Guide.
