← previous

Product available shipping tomorrow

MPL 12.5x12.5x5 / N38 - lamellar magnet

lamellar magnet

Catalog no 020117

GTIN: 5906301811237

length [±0,1 mm]

12.5 mm

Width [±0,1 mm]

12.5 mm

Height [±0,1 mm]

5 mm

Weight

5.86 g

Magnetization Direction

↑ axial

Load capacity

4.94 kg / 48.44 N

Magnetic Induction

360.91 mT

Coating

[NiCuNi] nickel

2.83 ZŁ with VAT / pcs + price for transport

2.30 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

2.30 ZŁ

2.83 ZŁ

price from 300 pcs

2.16 ZŁ

2.66 ZŁ

price from 1100 pcs

2.02 ZŁ

2.48 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to talk magnets?

Pick up the phone and ask +48 888 99 98 98 alternatively contact us via form our website.
Weight and appearance of magnetic components can be checked on our our magnetic calculator.

Orders placed before 14:00 will be shipped the same business day.

MPL 12.5x12.5x5 / N38 - lamellar magnet

Specification/characteristics MPL 12.5x12.5x5 / N38 - lamellar magnet

properties

values

Cat. no.

020117

GTIN

5906301811237

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

12.5 mm [±0,1 mm]

Width

12.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

5.86 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

4.94 kg / 48.44 N

Magnetic Induction ~ ?

360.91 mT

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

coercivity bHc ?

860-915

kA/m

coercivity bHc ?

10.8-11.5

kOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

properties

values

units

Vickers hardness

≥550

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

Shopping tips

Produkt dostępny wysyłka jutro!

JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

7.00 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SM 32x450 [2xM8] / N42 - magnetic separator

1 340.70 ZŁ / pcs

Produkt dostępny wysyłka jutro!

FM Ruszt magnetyczny do leja fi 200 dwupoziomowy / N52 - magnetic filter

4 458.75 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MP 36.2x11/6x7.5 / N38 - ring magnet

35.01 ZŁ / pcs

Neodymium flat magnets min. MPL 12.5x12.5x5 / N38 are magnets created from neodymium in a rectangular form. They are known for their extremely powerful magnetic properties, which are much stronger than standard ferrite magnets.
Due to their power, flat magnets are regularly used in structures that need very strong attraction.
The standard temperature resistance of flat magnets is 80 °C, but depending on the dimensions, this value grows.
In addition, flat magnets commonly have special coatings applied to their surfaces, e.g. nickel, gold, or chrome, to increase their corrosion resistance.
The magnet with the designation MPL 12.5x12.5x5 / N38 i.e. a magnetic force 4.94 kg which weighs a mere 5.86 grams, making it the excellent choice for applications requiring a flat shape.

Neodymium flat magnets provide a range of advantages compared to other magnet shapes, which lead to them being the best choice for a multitude of projects:
Contact surface: Due to their flat shape, flat magnets ensure a larger contact surface with adjacent parts, which can be beneficial in applications needing a stronger magnetic connection.
Technology applications: These magnets are often utilized in different devices, such as sensors, stepper motors, or speakers, where the flat shape is necessary for their operation.
Mounting: Their flat shape makes mounting, especially when it is required to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets permits creators greater flexibility in arranging them in structures, which can be more difficult with magnets of other shapes.
Stability: In certain applications, the flat base of the flat magnet can provide better stability, reducing the risk of shifting or rotating. However, one should remember that the optimal shape of the magnet is dependent on the specific project and requirements. In some cases, other shapes, such as cylindrical or spherical, may be a better choice.

Magnets attract ferromagnetic materials, such as iron, objects containing nickel, cobalt and special alloys of ferromagnetic metals. Additionally, magnets may lesser affect some other metals, such as steel. It’s worth noting that magnets are utilized in various devices and technologies.

Magnets work thanks to the properties of their magnetic field, which is generated by the movement of electric charges within their material. The magnetic field of magnets creates attractive forces, which affect materials containing nickel or other ferromagnetic substances.

Magnets have two poles: north (N) and south (S), which interact with each other when they are oppositely oriented. Poles of the same kind, such as two north poles, repel each other.
Due to these properties, magnets are often used in electrical devices, such as motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the greatest strength of attraction, making them ideal for applications requiring powerful magnetic fields. Moreover, the strength of a magnet depends on its size and the materials used.

Not all materials react to magnets, and examples of such substances are plastics, glass items, wood and precious stones. Moreover, magnets do not affect certain metals, such as copper, aluminum, items made of gold. These metals, although they are conductors of electricity, do not exhibit ferromagnetic properties, meaning that they do not respond to a standard magnetic field, unless they are subjected to an extremely strong magnetic field.
It’s worth noting that extremely high temperatures, above the Curie point, cause a loss of magnetic properties in the magnet. The Curie temperature is specific to each type of magnet, meaning that once this temperature is exceeded, the magnet stops being magnetic. Interestingly, strong magnets can interfere with the operation of devices, such as compasses, magnetic stripe cards or medical equipment, like pacemakers. For this reason, it is important to avoid placing magnets near such devices.

A flat magnet in classes N50 and N52 is a strong and powerful magnetic product in the form of a plate, that provides strong holding power and universal application. Competitive price, availability, durability and broad range of uses.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (according to literature),
Their ability to resist magnetic interference from external fields is notable,
The use of a mirror-like silver surface provides a smooth finish,
They have exceptional magnetic induction on the surface of the magnet,
With the right combination of materials, they reach significant thermal stability, enabling operation at or above 230°C (depending on the design),
The ability for custom shaping or adaptation to individual needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which extends the scope of their use cases,
Important function in advanced technical fields – they are used in data storage devices, electromechanical systems, diagnostic apparatus along with technologically developed systems,
Thanks to their power density, small magnets offer high magnetic performance, with minimal size,

Disadvantages of magnetic elements:

They can break when subjected to a heavy impact. If the magnets are exposed to shocks, it is suggested to place them in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage and additionally strengthens its overall strength,
Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (influenced by the magnet’s form). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
Magnets exposed to wet conditions can degrade. Therefore, for outdoor applications, it's best to use waterproof types made of coated materials,
The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is risky,
Possible threat linked to microscopic shards may arise, in case of ingestion, which is notable in the family environments. Furthermore, miniature parts from these devices have the potential to disrupt scanning if inside the body,
In cases of tight budgets, neodymium magnet cost is a challenge,

Optimal lifting capacity of a neodymium magnet – what affects it?

The given strength of the magnet corresponds to the optimal strength, calculated in ideal conditions, that is:

with the use of low-carbon steel plate acting as a magnetic yoke
of a thickness of at least 10 mm
with a refined outer layer
in conditions of no clearance
under perpendicular detachment force
under standard ambient temperature

Lifting capacity in real conditions – factors

In practice, the holding capacity of a magnet is affected by the following aspects, arranged from the most important to the least relevant:

Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) can cause a drop in lifting force of up to 50%.
Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap {between} the magnet’s surface and the plate lowers the lifting capacity.

Exercise Caution with Neodymium Magnets

Keep neodymium magnets away from the wallet, computer, and TV.

Neodymium magnets generate strong magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also damage devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

Magnets will crack or alternatively crumble with uncontrolled joining to each other. You can't approach them to each other. At a distance less than 10 cm you should hold them extremely firmly.

Magnets are not toys, youngest should not play with them.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

People with pacemakers are advised to avoid neodymium magnets.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

Neodymium magnets can demagnetize at high temperatures.

While Neodymium magnets can demagnetize at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

Neodymium magnetic are especially fragile, which leads to damage.

Neodymium magnetic are fragile and will break if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of connection between the magnets, tiny sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

Neodymium magnets are the most powerful magnets ever invented. Their power can surprise you.

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

Keep neodymium magnets away from GPS and smartphones.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

If you have a nickel allergy, avoid contact with neodymium magnets.

Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Safety rules!

In order to show why neodymium magnets are so dangerous, read the article - How very dangerous are very powerful neodymium magnets?.