e-mail: bok@dhit.pl

neodymium magnets

We offer yellow color magnetic Nd2Fe14B - our store's offer. Practically all "neodymium magnets" on our website are available for immediate purchase (check the list). Check out the magnet pricing for more details check the magnet price list

Magnet for water searching F200 GOLD

Where to buy very strong magnet? Magnetic holders in airtight and durable steel casing are perfect for use in difficult climate conditions, including in the rain and snow more

magnets with holders

Holders with magnets can be applied to facilitate production processes, underwater exploration, or searching for space rocks made of ore see...

We promise to ship your order if the order is placed by 2:00 PM on weekdays.

Dhit sp. z o.o.
Product available Ships tomorrow

MPL 5x5x1.2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020171

GTIN: 5906301811770

5.00

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 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
0.1500 ZŁ
0.1845 ZŁ
price from 4000 pcs
0.1410 ZŁ
0.1734 ZŁ
price from 17000 pcs
0.1320 ZŁ
0.1624 ZŁ
Not sure what to buy?

Give us a call +48 888 99 98 98 or contact us through form the contact section.
Specifications and structure of a magnet can be checked with our force calculator.

Same-day processing for orders placed before 14:00.

MPL 5x5x1.2 / N38 - lamellar magnet

Specification / characteristics MPL 5x5x1.2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020171
GTIN 5906301811770
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
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

Specification / characteristics MPL 5x5x1.2 / N38 - lamellar magnet
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

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.

Table 1: Static pull force (force vs gap) - interaction chart
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
Table 2: Slippage Hold (Wall)
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
Table 3: Vertical assembly (shearing) - vertical pull
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
Table 4: Material efficiency (saturation) - sheet metal selection
MPL 5x5x1.2 / N38
Steel thickness (mm) % power Real pull force (kg)
0.5 mm
10%
0.04 kg / 44.0 g
0.4 N
1 mm
25%
0.11 kg / 110.0 g
1.1 N
2 mm
50%
0.22 kg / 220.0 g
2.2 N
5 mm
100%
0.44 kg / 440.0 g
4.3 N
10 mm
100%
0.44 kg / 440.0 g
4.3 N
Table 5: Working in heat (material behavior) - thermal limit
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
Table 6: Two magnets (attraction) - forces in the system
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
Table 7: Safety (HSE) (electronics) - precautionary measures
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
Table 8: Dynamics (kinetic energy) - collision effects
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
Table 9: Corrosion resistance
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)
Table 10: Generator data (Flux)
MPL 5x5x1.2 / N38
Parameter Value Jedn. SI / Opis
Strumień (Flux) 695 Mx 7.0 µWb
Współczynnik Pc 0.30 Niski (Płaski)
Table 11: Hydrostatics and buoyancy
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%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
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.

Measurement Calculator
Pulling Force

Magnetic Field
Jak rozdzielać?

Nie próbuj odrywać magnesów siłą!
Zawsze zsuwaj je na bok krawędzi stołu.

STAY
MOVE
Zasady Bezpieczeństwa
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

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 5x5x1.2 mm and a weight of 0.22 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 0.44 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 0.44 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 5x5x1.2 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 0.44 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 5x5x1.2 / N38 model is magnetized axially (dimension 1.2 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (5x5 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 5 mm (length), 5 mm (width), and 1.2 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 0.44 kg (force ~4.28 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

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 forcewhat 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 forcewhat 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.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98