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MPL 30x20x5 / N38 - lamellar magnet

lamellar magnet

Catalog no 020143

GTIN: 5906301811497

length [±0,1 mm]

30 mm

Width [±0,1 mm]

20 mm

Height [±0,1 mm]

5 mm

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

9.67 kg / 94.83 N

Magnetic Induction

220.03 mT

Coating

[NiCuNi] nickel

8.77 ZŁ with VAT / pcs + price for transport

7.13 ZŁ net + 23% VAT / pcs

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MPL 30x20x5 / N38 - lamellar magnet

Specification/characteristics MPL 30x20x5 / N38 - lamellar magnet

properties

values

Cat. no.

020143

GTIN

5906301811497

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

30 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

9.67 kg / 94.83 N

Magnetic Induction ~ ?

220.03 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 30x20x5 / N38 are magnets made from neodymium in a flat form. They are known for their exceptionally potent magnetic properties, which outshine traditional ferrite magnets.
Due to their strength, flat magnets are regularly applied in products that need very strong attraction.
The standard temperature resistance of these magnets is 80 °C, but depending on the dimensions, this value grows.
Moreover, flat magnets commonly have special coatings applied to their surfaces, e.g. nickel, gold, or chrome, for enhancing their durability.
The magnet named MPL 30x20x5 / N38 and a magnetic force 9.67 kg which weighs only 22.5 grams, making it the excellent choice for projects needing a flat magnet.

Neodymium flat magnets provide a range of advantages versus other magnet shapes, which lead to them being an ideal choice for many applications:
Contact surface: Due to their flat shape, flat magnets guarantee a larger contact surface with adjacent parts, which can be beneficial in applications requiring a stronger magnetic connection.
Technology applications: These are often applied in various devices, e.g. sensors, stepper motors, or speakers, where the flat shape is important for their operation.
Mounting: This form's flat shape makes mounting, particularly when there's a need to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets permits creators greater flexibility in placing them in structures, which is more difficult with magnets of more complex shapes.
Stability: In certain applications, the flat base of the flat magnet can provide better stability, minimizing the risk of shifting or rotating. It’s important to keep in mind 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, are more appropriate.

How do magnets work? Magnets attract objects made of ferromagnetic materials, such as iron elements, objects containing nickel, materials with cobalt and special alloys of ferromagnetic metals. Moreover, magnets may lesser affect alloys containing iron, such as steel. It’s worth noting that magnets are utilized in various devices and technologies.

Magnets work thanks to the properties of the magnetic field, which arises from the ordered movement of electrons in their structure. The magnetic field of these objects creates attractive forces, which affect materials containing iron or other ferromagnetic substances.

Magnets have two poles: north (N) and south (S), which attract each other when they are different. Poles of the same kind, e.g. two north poles, repel each other.
Thanks to this principle of operation, magnets are commonly used in magnetic technologies, such as motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the greatest strength of attraction, making them ideal for applications requiring strong magnetic fields. Additionally, the strength of a magnet depends on its size and the material it is made of.

Not all materials react to magnets, and examples of such substances are plastic, glass items, wooden materials or precious stones. Additionally, magnets do not affect certain metals, such as copper, aluminum, gold. Although these metals conduct electricity, do not exhibit ferromagnetic properties, meaning that they remain unaffected by a magnet, unless exposed to a very 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, magnetic stripe cards and even electronic devices sensitive to magnetic fields. Therefore, it is important to exercise caution when using magnets.

A neodymium magnet with classification N50 and N52 is a powerful and strong magnetic piece with the shape of a plate, that offers strong holding power and universal application. Attractive price, 24h delivery, resistance and versatility.

Advantages as well as disadvantages of neodymium magnets NdFeB.

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

They virtually do not lose power, because even after ten years, the decline in efficiency is only ~1% (according to literature),
Their ability to resist magnetic interference from external fields is among the best,
Thanks to the polished finish and nickel coating, they have an elegant appearance,
They possess intense magnetic force measurable at the magnet’s surface,
Thanks to their enhanced temperature resistance, they can operate (depending on the geometry) even at temperatures up to 230°C or more,
With the option for customized forming and targeted design, these magnets can be produced in multiple shapes and sizes, greatly improving engineering flexibility,
Significant impact in cutting-edge sectors – they serve a purpose in data storage devices, electric motors, healthcare devices as well as technologically developed systems,
Relatively small size with high magnetic force – neodymium magnets offer strong power in small dimensions, which allows for use in small systems

Disadvantages of rare earth magnets:

They can break when subjected to a powerful 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 breakage and additionally strengthens its overall durability,
They lose magnetic force at high 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 common to use sealed magnets made of rubber for outdoor use,
Limited ability to create internal holes in the magnet – the use of a housing is recommended,
Potential hazard related to magnet particles may arise, if ingested accidentally, which is significant in the context of child safety. Moreover, miniature parts from these devices have the potential to interfere with diagnostics once in the system,
Due to expensive raw materials, their cost is relatively high,

Caution with Neodymium Magnets

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Keep neodymium magnets away from people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

Neodymium magnets can attract to each other, pinch the skin, and cause significant injuries.

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

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

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

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

Maintain neodymium magnets far from youngest children.

Not all neodymium magnets are toys, so do not let children play with them. In the case of small magnets, they can be swallowed and cause choking. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

The magnet coating is made of nickel, so be cautious if you have an allergy.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as 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 magnetic are especially delicate, resulting in damage.

Neodymium magnetic are highly delicate, and by joining them in an uncontrolled manner, they will break. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable 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.

Safety precautions!

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