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MPL 40x10x18 / N38 - lamellar magnet

lamellar magnet

Catalog no 020149

GTIN: 5906301811558

length [±0,1 mm]

40 mm

Width [±0,1 mm]

10 mm

Height [±0,1 mm]

18 mm

Weight

54 g

Magnetization Direction

→ diametrical

Load capacity

28.43 kg / 278.8 N

Magnetic Induction

540.48 mT

Coating

[NiCuNi] nickel

18.45 ZŁ with VAT / pcs + price for transport

15.00 ZŁ net + 23% VAT / pcs

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MPL 40x10x18 / N38 - lamellar magnet

Specification/characteristics MPL 40x10x18 / N38 - lamellar magnet

properties

values

Cat. no.

020149

GTIN

5906301811558

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

18 mm [±0,1 mm]

Weight

54 g [±0,1 mm]

Magnetization Direction

→ diametrical

Load capacity ~ ?

28.43 kg / 278.8 N

Magnetic Induction ~ ?

540.48 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 40x10x18 / N38 are magnets created from neodymium in a flat form. They are known for their exceptionally potent magnetic properties, which are much stronger than standard iron magnets.
Thanks to their mighty power, flat magnets are frequently applied in structures that need exceptional adhesion.
Most common temperature resistance of flat magnets is 80 °C, but depending on the dimensions, this value rises.
Additionally, flat magnets usually have different coatings applied to their surfaces, e.g. nickel, gold, or chrome, for enhancing their corrosion resistance.
The magnet with the designation MPL 40x10x18 / N38 i.e. a magnetic force 28.43 kg with a weight of only 54 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 make 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 can be beneficial in applications needing a stronger magnetic connection.
Technology applications: They are often applied in different devices, such as sensors, stepper motors, or speakers, where the flat shape is necessary for their operation.
Mounting: This form's flat shape makes mounting, particularly when it is required to attach the magnet to some surface.
Design flexibility: The flat shape of the magnets allows creators greater flexibility in arranging them in devices, which is more difficult with magnets of more complex shapes.
Stability: In certain applications, the flat base of the flat magnet can offer better stability, minimizing the risk of sliding or rotating. However, one should remember that the optimal shape of the magnet is dependent on the specific application and requirements. In some cases, other shapes, like cylindrical or spherical, may be a better choice.

Magnets attract ferromagnetic materials, such as iron, nickel, cobalt or special alloys of ferromagnetic metals. Moreover, magnets may weaker 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 the magnetic field, which is generated by the movement of electric charges within their material. Magnetic fields of magnets creates attractive forces, which affect objects made of cobalt or other magnetic materials.

Magnets have two main poles: north (N) and south (S), which attract each other when they are different. Similar poles, such as two north poles, repel 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 highest power of attraction, making them ideal for applications requiring strong magnetic fields. Moreover, the strength of a magnet depends on its size and the materials used.

Magnets do not attract plastics, glass items, wooden materials or 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 remain unaffected by a magnet, 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. Every magnetic material has its Curie point, meaning that once this temperature is exceeded, the magnet stops being magnetic. Additionally, strong magnets can interfere with the operation of devices, such as navigational instruments, magnetic stripe cards or electronic devices sensitive to magnetic fields. For this reason, it is important to exercise caution when using magnets.

A flat magnet of class N50 and N52 is a strong and powerful magnetic product with the shape of a plate, providing strong holding power and universal applicability. Competitive price, availability, durability and broad range of uses.

Advantages and disadvantages of neodymium magnets NdFeB.

Besides their stability, neodymium magnets are valued for these benefits:

They do not lose their even during approximately 10 years – the loss of lifting capacity is only ~1% (based on measurements),
They protect against demagnetization induced by ambient magnetic fields remarkably well,
In other words, due to the metallic gold coating, the magnet obtains an professional appearance,
Magnetic induction on the surface of these magnets is notably high,
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 geometry),
Thanks to the freedom in shaping and the capability to adapt to specific requirements, neodymium magnets can be created in diverse shapes and sizes, which expands their functional possibilities,
Wide application in cutting-edge sectors – they are utilized in hard drives, electric drives, clinical machines or even technologically developed systems,
Compactness – despite their small size, they generate strong force, making them ideal for precision applications

Disadvantages of magnetic elements:

They are prone to breaking when subjected to a strong impact. If the magnets are exposed to mechanical hits, they should be placed in a metal holder. The steel housing, in the form of a holder, protects the magnet from fracture and strengthens its overall strength,
Magnets lose power when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (influenced by the magnet’s structure). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
They rust in a wet environment. For outdoor use, we recommend using encapsulated magnets, such as those made of non-metallic materials,
Limited ability to create precision features in the magnet – the use of a mechanical support is recommended,
Possible threat from tiny pieces may arise, if ingested accidentally, which is significant in the health of young users. It should also be noted that miniature parts from these magnets can complicate medical imaging once in the system,
High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Safety Precautions

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

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

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

To handle magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets produce strong magnetic fields that can interfere 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 attract to each other, pinch the skin, and cause significant swellings.

Magnets may crack or alternatively crumble with uncontrolled connecting to each other. Remember not to move them to each other or hold them firmly in hands at a distance less than 10 cm.

Neodymium magnets can become demagnetized 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.

Avoid bringing neodymium magnets close to a phone or GPS.

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

Neodymium magnetic are fragile as well as can easily break as well as get damaged.

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

The magnet coating is made of nickel, so be cautious 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 magnets should not be in the vicinity children.

Neodymium magnets are not toys. Do not allow children to play 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.

Dust and powder from neodymium magnets are highly 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.

Caution!

To raise awareness of why neodymium magnets are so dangerous, see the article titled How dangerous are powerful neodymium magnets?.