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MPL 50x25x12 / N38 - lamellar magnet

lamellar magnet

Catalog no 020343

GTIN: 5906301811855

length [±0,1 mm]

50 mm

Width [±0,1 mm]

25 mm

Height [±0,1 mm]

12 mm

Weight

112.5 g

Magnetization Direction

↑ axial

Load capacity

33.5 kg / 328.52 N

Magnetic Induction

340.43 mT

Coating

[NiCuNi] nickel

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MPL 50x25x12 / N38 - lamellar magnet

Specification/characteristics MPL 50x25x12 / N38 - lamellar magnet

properties

values

Cat. no.

020343

GTIN

5906301811855

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

50 mm [±0,1 mm]

Width

25 mm [±0,1 mm]

Height

12 mm [±0,1 mm]

Weight

112.5 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

33.5 kg / 328.52 N

Magnetic Induction ~ ?

340.43 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

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Flat neodymium magnets min. MPL 50x25x12 / N38 are magnets made from neodymium in a flat form. They are valued for their exceptionally potent magnetic properties, which are much stronger than ordinary ferrite magnets.
Thanks to their high strength, flat magnets are frequently applied in devices that need strong holding power.
Most common temperature resistance of flat magnets is 80 °C, but with larger dimensions, this value grows.
In addition, flat magnets usually have special coatings applied to their surfaces, e.g. nickel, gold, or chrome, to improve their strength.
The magnet labeled MPL 50x25x12 / N38 and a magnetic force 33.5 kg with a weight of only 112.5 grams, making it the perfect choice for applications requiring a flat shape.

Neodymium flat magnets provide a range of advantages versus other magnet shapes, which cause them being the best choice for a multitude of projects:
Contact surface: Thanks to their flat shape, flat magnets guarantee a greater contact surface with other components, which is beneficial in applications needing a stronger magnetic connection.
Technology applications: These are often applied in different devices, such as sensors, stepper motors, or speakers, where the flat shape is important for their operation.
Mounting: The flat form's flat shape simplifies mounting, especially when there's a need to attach the magnet to some surface.
Design flexibility: The flat shape of the magnets gives the possibility designers a lot of flexibility in arranging them in structures, which is more difficult with magnets of more complex shapes.
Stability: In certain applications, the flat base of the flat magnet may offer better stability, minimizing the risk of sliding or rotating. However, it's important to note that the optimal shape of the magnet depends on the specific project and requirements. In certain cases, other shapes, such as cylindrical or spherical, are a better choice.

How do magnets work? Magnets attract ferromagnetic materials, such as iron elements, objects containing nickel, materials with cobalt and alloys of metals with magnetic properties. Additionally, magnets may weaker affect alloys containing iron, such as steel. Magnets are used in many fields.

The operation of magnets is based on the properties of their magnetic field, which arises from the ordered movement of electrons in their structure. Magnetic fields of these objects creates attractive forces, which affect materials containing nickel or other magnetic materials.

Magnets have two poles: north (N) and south (S), which attract each other when they are different. Poles of the same kind, such as two north poles, repel each other.
Due to these properties, magnets are regularly used in electrical devices, e.g. motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the highest power of attraction, making them perfect for applications requiring strong 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, wooden materials or most gemstones. Moreover, magnets do not affect most metals, such as copper, aluminum materials, copper, aluminum, and gold. Although these metals conduct 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 high temperatures can weaken the magnet's effect. The Curie temperature is specific to each type of magnet, meaning that once this temperature is exceeded, the magnet stops being magnetic. Additionally, strong magnets can interfere with the operation of devices, such as compasses, magnetic stripe cards or electronic devices sensitive to magnetic fields. Therefore, it is important to avoid placing magnets near such devices.

A neodymium plate magnet in classes N52 and N50 is a powerful and strong metal object in the form of a plate, providing strong holding power and universal applicability. Competitive price, 24h delivery, durability and broad range of uses.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their pulling strength, neodymium magnets provide the following advantages:

Their power is durable, and after around ten years, it drops only by ~1% (theoretically),
They show strong resistance to demagnetization from outside magnetic sources,
Because of the reflective layer of nickel, the component looks high-end,
Magnetic induction on the surface of these magnets is notably high,
Thanks to their high temperature resistance, they can operate (depending on the shape) even at temperatures up to 230°C or more,
With the option for fine forming and precise design, these magnets can be produced in numerous shapes and sizes, greatly improving application potential,
Important function in new technology industries – they serve a purpose in hard drives, electromechanical systems, clinical machines or even high-tech tools,
Thanks to their power density, small magnets offer high magnetic performance, in miniature format,

Disadvantages of magnetic elements:

They are fragile when subjected to a strong impact. If the magnets are exposed to shocks, it is advisable to use in a protective case. The steel housing, in the form of a holder, protects the magnet from fracture and increases its overall strength,
They lose magnetic force at increased temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
Due to corrosion risk in humid conditions, it is recommended to use sealed magnets made of plastic for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the difficulty in manufacturing complex structures directly in the magnet,
Safety concern related to magnet particles may arise, especially if swallowed, which is crucial in the context of child safety. Moreover, small elements from these devices have the potential to complicate medical imaging when ingested,
Due to expensive raw materials, their cost is above average,

Safety Precautions

Neodymium magnets can become demagnetized at high temperatures.

Even though magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

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

Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

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.

Neodymium magnets are the most powerful, most remarkable magnets on earth, and the surprising force between them can shock you at first.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

Neodymium Magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant swellings.

If you have a finger between or alternatively on the path of attracting magnets, there may be a serious cut or a fracture.

Dust and powder from neodymium magnets are highly flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

It is essential to maintain neodymium magnets out of reach from children.

Remember that neodymium magnets are not toys. Be cautious and make sure no child plays with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Magnets made of neodymium are extremely fragile, resulting in their cracking.

Neodymium magnets are extremely fragile, and by joining them in an uncontrolled manner, they will break. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

Never bring neodymium magnets close to a phone and GPS.

Strong fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Safety precautions!

Please read the article - What danger lies in neodymium magnets? You will learn how to handle them properly.