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MPL 3x3x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020148

GTIN: 5906301811541

length [±0,1 mm]

3 mm

Width [±0,1 mm]

3 mm

Height [±0,1 mm]

3 mm

Weight

0.2 g

Magnetization Direction

↑ axial

Load capacity

0.71 kg / 6.96 N

Magnetic Induction

538.48 mT

Coating

[NiCuNi] nickel

0.16 ZŁ with VAT / pcs + price for transport

0.13 ZŁ net + 23% VAT / pcs

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MPL 3x3x3 / N38 - lamellar magnet

Specification/characteristics MPL 3x3x3 / N38 - lamellar magnet

properties

values

Cat. no.

020148

GTIN

5906301811541

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

3 mm [±0,1 mm]

Width

3 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

0.2 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

0.71 kg / 6.96 N

Magnetic Induction ~ ?

538.48 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 i.e. MPL 3x3x3 / N38 are magnets created from neodymium in a rectangular form. They are appreciated for their extremely powerful magnetic properties, which are much stronger than traditional ferrite magnets.
Due to their strength, flat magnets are commonly applied in structures that need strong holding power.
The standard temperature resistance of flat magnets is 80°C, but with larger dimensions, this value can increase.
Additionally, flat magnets usually have special coatings applied to their surfaces, e.g. nickel, gold, or chrome, for enhancing their durability.
The magnet named MPL 3x3x3 / N38 i.e. a lifting capacity of 0.71 kg which weighs only 0.2 grams, making it the excellent choice for projects needing a flat magnet.

Neodymium flat magnets offer a range of advantages versus other magnet shapes, which make them being the best choice for many applications:
Contact surface: Due to their flat shape, flat magnets guarantee a greater contact surface with other components, which can be beneficial in applications requiring a stronger magnetic connection.
Technology applications: They are often applied in many devices, such as sensors, stepper motors, or speakers, where the thin and wide shape is important for their operation.
Mounting: This form's flat shape makes mounting, particularly when it is required to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets permits designers greater flexibility in placing them in devices, which is more difficult with magnets of other shapes.
Stability: In certain applications, the flat base of the flat magnet may offer better stability, reducing the risk of sliding or rotating. However, it's important to note that the optimal shape of the magnet is dependent on the given use and requirements. In some cases, other shapes, such as cylindrical or spherical, are a better choice.

Attracted by magnets are ferromagnetic materials, such as iron elements, nickel, materials with cobalt and special alloys of ferromagnetic metals. Additionally, magnets may lesser affect some other metals, such as steel. Magnets are used in many fields.

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 attract objects made of iron or other magnetic materials.

Magnets have two poles: north (N) and south (S), which interact with each other when they are different. Similar poles, such as two north poles, act repelling on each other.
Thanks to this principle of operation, magnets are regularly used in electrical devices, such as motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the highest power of attraction, making them ideal for applications requiring strong magnetic fields. Additionally, the strength of a magnet depends on its dimensions 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 materials, 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 should be noted that extremely high temperatures, above the Curie point, cause a loss of magnetic properties in the magnet. Every magnetic material has its Curie point, meaning that under such conditions, the magnet stops being magnetic. Additionally, strong magnets can interfere with the operation of devices, such as compasses, credit cards or electronic devices sensitive to magnetic fields. Therefore, it is important to avoid placing magnets near such devices.

A neodymium magnet of class N52 and N50 is a powerful and strong metal object in the form of a plate, featuring strong holding power and universal applicability. Very good price, 24h delivery, ruggedness and universal usability.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their exceptional pulling force, neodymium magnets offer the following advantages:

They do not lose their power around ten years – the decrease of lifting capacity is only ~1% (according to tests),
They show superior resistance to demagnetization from external field exposure,
The use of a decorative gold surface provides a eye-catching finish,
They exhibit superior levels of magnetic induction near the outer area of the magnet,
With the right combination of compounds, they reach excellent thermal stability, enabling operation at or above 230°C (depending on the structure),
The ability for accurate shaping or adjustment to individual needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which extends the scope of their use cases,
Key role in modern technologies – they are utilized in HDDs, electromechanical systems, clinical machines or even high-tech tools,
Thanks to their power density, small magnets offer high magnetic performance, with minimal size,

Disadvantages of NdFeB magnets:

They can break when subjected to a strong impact. If the magnets are exposed to external force, we recommend in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks , and at the same time increases its overall resistance,
Magnets lose magnetic efficiency when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible power drop (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,
They rust in a humid environment. If exposed to rain, we recommend using moisture-resistant magnets, such as those made of polymer,
Limited ability to create internal holes in the magnet – the use of a mechanical support is recommended,
Potential hazard related to magnet particles may arise, when consumed by mistake, which is important in the health of young users. It should also be noted that minuscule fragments from these magnets have the potential to complicate medical imaging once in the system,
In cases of mass production, neodymium magnet cost may not be economically viable,

Safety Precautions

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Neodymium magnets produce 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 videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets should not be in the vicinity children.

Not all neodymium magnets are toys, so do not let children play with them. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Neodymium magnets are characterized by being fragile, which can cause them to crumble.

Neodymium magnets are highly delicate, and by joining them in an uncontrolled manner, they will crack. 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.

Dust and powder from neodymium magnets are flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have shown to retain their effectiveness up to 80°C or 175°F, this temperature may vary depending on the type of material, shape, and intended use of the magnet.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Neodymium magnets bounce and also clash mutually within a radius of several to almost 10 cm from each other.

Keep neodymium magnets away from people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

Keep neodymium magnets away from GPS and smartphones.

Neodymium magnets generate strong magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Avoid contact with neodymium magnets if you have a nickel allergy.

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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times more powerful, and their strength can surprise you.

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

Caution!

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