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MPL 80x40x15 / N38 - lamellar magnet

lamellar magnet

Catalog no 020177

GTIN: 5906301811831

length [±0,1 mm]

80 mm

Width [±0,1 mm]

40 mm

Height [±0,1 mm]

15 mm

Weight

360 g

Magnetization Direction

↑ axial

Load capacity

67.01 kg / 657.14 N

Magnetic Induction

285.78 mT

Coating

[NiCuNi] nickel

160.00 ZŁ with VAT / pcs + price for transport

130.08 ZŁ net + 23% VAT / pcs

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Lifting power as well as shape of neodymium magnets can be reviewed on our online calculation tool.

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MPL 80x40x15 / N38 - lamellar magnet

Specification/characteristics MPL 80x40x15 / N38 - lamellar magnet

properties

values

Cat. no.

020177

GTIN

5906301811831

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

80 mm [±0,1 mm]

Width

40 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

360 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

67.01 kg / 657.14 N

Magnetic Induction ~ ?

285.78 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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Neodymium flat magnets i.e. MPL 80x40x15 / N38 are magnets created from neodymium in a flat form. They are valued for their extremely powerful magnetic properties, which are much stronger than ordinary ferrite magnets.
Thanks to their mighty power, flat magnets are commonly applied in products that require very strong attraction.
The standard temperature resistance of these magnets is 80 °C, but with larger dimensions, this value grows.
Additionally, flat magnets usually have special coatings applied to their surfaces, such as nickel, gold, or chrome, to improve their durability.
The magnet named MPL 80x40x15 / N38 i.e. a magnetic force 67.01 kg which weighs only 360 grams, making it the excellent choice for applications requiring a flat shape.

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 adjacent parts, which is beneficial in applications needing a stronger magnetic connection.
Technology applications: These magnets are often applied in many devices, e.g. sensors, stepper motors, or speakers, where the thin and wide shape is important for their operation.
Mounting: Their flat shape makes it easier mounting, particularly when it is necessary to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets permits designers greater flexibility in arranging them in devices, which is more difficult with magnets of other shapes.
Stability: In some applications, the flat base of the flat magnet can 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, may be a better choice.

How do magnets work? Magnets attract objects made of ferromagnetic materials, such as iron elements, nickel, materials with cobalt or special alloys of ferromagnetic metals. Additionally, magnets may lesser affect alloys containing iron, 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 interactions, which affect objects made of nickel or other magnetic materials.

Magnets have two main poles: north (N) and south (S), which interact with each other when they are different. Similar poles, e.g. two north poles, act repelling on each other.
Thanks to this principle of operation, 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 plastic, glass, wood and precious stones. Additionally, magnets do not affect certain metals, such as copper, aluminum materials, copper, aluminum, and 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 under such conditions, the magnet stops being magnetic. Interestingly, strong magnets can interfere with the operation of devices, such as compasses, credit cards and even electronic devices sensitive to magnetic fields. For this reason, it is important to avoid placing magnets near such devices.

A neodymium magnet of class N52 and N50 is a powerful and strong magnetic piece shaped like a plate, providing strong holding power and broad usability. Very good price, availability, ruggedness and broad range of uses.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from their consistent holding force, neodymium magnets have these key benefits:

They retain their magnetic properties for around ten years – the drop is just ~1% (based on simulations),
They remain magnetized despite exposure to magnetic surroundings,
In other words, due to the glossy silver coating, the magnet obtains an stylish appearance,
They possess significant magnetic force measurable at the magnet’s surface,
Neodymium magnets are known for exceptionally strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
Thanks to the freedom in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in different geometries, which increases their functional possibilities,
Significant impact in new technology industries – they serve a purpose in computer drives, electric drives, medical equipment or even sophisticated instruments,
Thanks to their efficiency per volume, small magnets offer high magnetic performance, in miniature format,

Disadvantages of neodymium magnets:

They are fragile when subjected to a sudden impact. If the magnets are exposed to external force, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from breakage while also strengthens its overall strength,
High temperatures may significantly reduce the field efficiency of neodymium magnets. Typically, above 80°C, they experience permanent deterioration in performance (depending on form). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
Due to corrosion risk in humid conditions, it is advisable to use sealed magnets made of synthetic coating for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing fine shapes directly in the magnet,
Safety concern linked to microscopic shards may arise, if ingested accidentally, which is important in the health of young users. Moreover, miniature parts from these magnets can disrupt scanning if inside the body,
Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Handle Neodymium Magnets Carefully

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.

In the case of placing a finger in the path of a neodymium magnet, in such a case, a cut or even a fracture may occur.

You should maintain neodymium magnets at a safe distance from the wallet, computer, and TV.

Magnetic fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic 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.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength 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.

The magnet is coated with nickel - be careful if you have an 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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnetic are fragile as well as can easily break as well as shatter.

Neodymium magnets are characterized by significant fragility. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. At the moment of connection between the magnets, sharp metal fragments can be dispersed in different directions.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets generate strong magnetic fields. As a result, they 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 become demagnetized at high temperatures.

Despite the fact that 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.

Magnets should not be treated as toys. Therefore, it is not recommended for children to have access to them.

Neodymium magnets are not toys. Do not allow children to play with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing severe injuries, and even death.

Safety rules!

To show why neodymium magnets are so dangerous, see the article - How very dangerous are very powerful neodymium magnets?.