MPL 5x5x1.2 / N38 - lamellar magnet
lamellar magnet
Catalog no 020171
GTIN: 5906301811770
length
5 mm [±0,1 mm]
Width
5 mm [±0,1 mm]
Height
1.2 mm [±0,1 mm]
Weight
0.22 g
Magnetization Direction
↑ axial
Load capacity
0.44 kg / 4.28 N
Magnetic Induction
245.17 mT / 2452 Gs
Coating
[NiCuNi] Nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
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MPL 5x5x1.2 / N38 - lamellar magnet
Specification / characteristics MPL 5x5x1.2 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020171 |
| GTIN | 5906301811770 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 5 mm [±0,1 mm] |
| Width | 5 mm [±0,1 mm] |
| Height | 1.2 mm [±0,1 mm] |
| Weight | 0.22 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.44 kg / 4.28 N |
| Magnetic Induction ~ ? | 245.17 mT / 2452 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 |
Physical simulation of the product - data
Presented values are the result of a engineering simulation. Values rely on algorithms for the material NdFeB. Real-world conditions may deviate from the simulation results. Treat these data as a supplementary guide during assembly planning.
MPL 5x5x1.2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
2450 Gs
245.0 mT
|
0.44 kg / 440.0 g
4.3 N
|
low risk |
| 1 mm |
1739 Gs
173.9 mT
|
0.22 kg / 221.8 g
2.2 N
|
low risk |
| 2 mm |
1054 Gs
105.4 mT
|
0.08 kg / 81.4 g
0.8 N
|
low risk |
| 3 mm |
622 Gs
62.2 mT
|
0.03 kg / 28.4 g
0.3 N
|
low risk |
| 5 mm |
241 Gs
24.1 mT
|
0.00 kg / 4.3 g
0.0 N
|
low risk |
| 10 mm |
45 Gs
4.5 mT
|
0.00 kg / 0.1 g
0.0 N
|
low risk |
| 15 mm |
15 Gs
1.5 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 20 mm |
7 Gs
0.7 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
MPL 5x5x1.2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.09 kg / 88.0 g
0.9 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 44.0 g
0.4 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 16.0 g
0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 6.0 g
0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
MPL 5x5x1.2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.13 kg / 132.0 g
1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 88.0 g
0.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 44.0 g
0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.22 kg / 220.0 g
2.2 N
|
MPL 5x5x1.2 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 44.0 g
0.4 N
|
| 1 mm |
|
0.11 kg / 110.0 g
1.1 N
|
| 2 mm |
|
0.22 kg / 220.0 g
2.2 N
|
| 5 mm |
|
0.44 kg / 440.0 g
4.3 N
|
| 10 mm |
|
0.44 kg / 440.0 g
4.3 N
|
MPL 5x5x1.2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.44 kg / 440.0 g
4.3 N
|
OK |
| 40 °C | -2.2% |
0.43 kg / 430.3 g
4.2 N
|
OK |
| 60 °C | -4.4% |
0.42 kg / 420.6 g
4.1 N
|
|
| 80 °C | -6.6% |
0.41 kg / 411.0 g
4.0 N
|
|
| 100 °C | -28.8% |
0.31 kg / 313.3 g
3.1 N
|
MPL 5x5x1.2 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
0.92 kg / 925 g
9.1 N
4 027 Gs
|
N/A |
| 1 mm |
0.70 kg / 699 g
6.9 N
4 260 Gs
|
0.63 kg / 629 g
6.2 N
~0 Gs
|
| 2 mm |
0.47 kg / 466 g
4.6 N
3 478 Gs
|
0.42 kg / 420 g
4.1 N
~0 Gs
|
| 3 mm |
0.29 kg / 288 g
2.8 N
2 734 Gs
|
0.26 kg / 259 g
2.5 N
~0 Gs
|
| 5 mm |
0.10 kg / 101 g
1.0 N
1 617 Gs
|
0.09 kg / 91 g
0.9 N
~0 Gs
|
| 10 mm |
0.01 kg / 9 g
0.1 N
482 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 20 mm |
0.00 kg / 0 g
0.0 N
90 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 50 mm |
0.00 kg / 0 g
0.0 N
7 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
MPL 5x5x1.2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 1.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.5 cm |
| Car key | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
MPL 5x5x1.2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
45.11 km/h
(12.53 m/s)
|
0.02 J | |
| 30 mm |
78.12 km/h
(21.70 m/s)
|
0.05 J | |
| 50 mm |
100.85 km/h
(28.01 m/s)
|
0.09 J | |
| 100 mm |
142.63 km/h
(39.62 m/s)
|
0.17 J |
MPL 5x5x1.2 / 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 5x5x1.2 / N38
| Parameter | Value | Jedn. SI / Opis |
|---|---|---|
| Strumień (Flux) | 695 Mx | 7.0 µWb |
| Współczynnik Pc | 0.30 | Niski (Płaski) |
MPL 5x5x1.2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.44 kg | Standard |
| Water (riverbed) |
0.50 kg
(+0.06 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 offers
Strengths as well as weaknesses of neodymium magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They do not lose strength, even over around 10 years – the decrease in lifting capacity is only ~1% (according to tests),
- They are resistant to demagnetization induced by external field influence,
- The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets possess huge magnetic induction on the outer side,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of individual modeling and adapting to specific applications,
- Versatile presence in future technologies – they are used in mass storage devices, electromotive mechanisms, advanced medical instruments, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems
Cons of neodymium magnets: application proposals
- At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in realizing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. Additionally, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Maximum magnetic pulling force – what it depends on?
The load parameter shown concerns the peak performance, measured under ideal test conditions, namely:
- on a block made of structural steel, perfectly concentrating the magnetic field
- with a thickness minimum 10 mm
- with an ideally smooth contact surface
- without the slightest clearance between the magnet and steel
- during detachment in a direction vertical to the plane
- at room temperature
Practical lifting capacity: influencing factors
Holding efficiency is influenced by specific conditions, mainly (from most important):
- Distance – the presence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
- Steel grade – the best choice is pure iron steel. Cast iron may attract less.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
* Lifting capacity was measured by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance {between} the magnet’s surface and the plate reduces the lifting capacity.
Strengths as well as weaknesses of neodymium magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They do not lose strength, even over around 10 years – the decrease in lifting capacity is only ~1% (according to tests),
- They are resistant to demagnetization induced by external field influence,
- The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets possess huge magnetic induction on the outer side,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of individual modeling and adapting to specific applications,
- Versatile presence in future technologies – they are used in mass storage devices, electromotive mechanisms, advanced medical instruments, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems
Cons of neodymium magnets: application proposals
- At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in realizing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. Additionally, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Maximum magnetic pulling force – what it depends on?
The load parameter shown concerns the peak performance, measured under ideal test conditions, namely:
- on a block made of structural steel, perfectly concentrating the magnetic field
- with a thickness minimum 10 mm
- with an ideally smooth contact surface
- without the slightest clearance between the magnet and steel
- during detachment in a direction vertical to the plane
- at room temperature
Practical lifting capacity: influencing factors
Holding efficiency is influenced by specific conditions, mainly (from most important):
- Distance – the presence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
- Steel grade – the best choice is pure iron steel. Cast iron may attract less.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
* Lifting capacity was measured by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance {between} the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Electronic hazard
Do not bring magnets near a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.
Respect the power
Handle with care. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can react.
Compass and GPS
Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Dust explosion hazard
Machining of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Crushing force
Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!
Danger to the youngest
Adult use only. Tiny parts can be swallowed, causing severe trauma. Store out of reach of children and animals.
Beware of splinters
Neodymium magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them shattering into small pieces.
Permanent damage
Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.
Warning for allergy sufferers
It is widely known that the nickel plating (standard magnet coating) is a common allergen. For allergy sufferers, avoid direct skin contact or select versions in plastic housing.
Pacemakers
Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.
Warning!
Learn more about hazards in the article: Magnet Safety Guide.
