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MPL 3x3x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020147

GTIN: 5906301811534

length [±0,1 mm]

3 mm

Width [±0,1 mm]

3 mm

Height [±0,1 mm]

2 mm

Weight

0.14 g

Magnetization Direction

↑ axial

Load capacity

0.47 kg / 4.61 N

Magnetic Induction

472.94 mT

Coating

[NiCuNi] nickel

0.09 ZŁ with VAT / pcs + price for transport

0.07 ZŁ net + 23% VAT / pcs

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MPL 3x3x2 / N38 - lamellar magnet

Specification/characteristics MPL 3x3x2 / N38 - lamellar magnet

properties

values

Cat. no.

020147

GTIN

5906301811534

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

2 mm [±0,1 mm]

Weight

0.14 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

0.47 kg / 4.61 N

Magnetic Induction ~ ?

472.94 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 3x3x2 / N38 are magnets made from neodymium in a flat form. They are valued for their extremely powerful magnetic properties, which surpass ordinary iron magnets.
Thanks to their mighty power, flat magnets are frequently applied in products that require strong holding power.
Most common temperature resistance of flat magnets is 80 °C, but with larger dimensions, this value can increase.
In addition, flat magnets commonly have different coatings applied to their surfaces, such as nickel, gold, or chrome, to improve their corrosion resistance.
The magnet named MPL 3x3x2 / N38 and a lifting capacity of 0.47 kg with a weight of only 0.14 grams, making it the ideal choice for applications requiring a flat shape.

Neodymium flat magnets offer a range of advantages compared to other magnet shapes, which make them being a perfect solution for various uses:
Contact surface: Thanks to their flat shape, flat magnets ensure a greater contact surface with adjacent parts, which can be beneficial in applications requiring a stronger magnetic connection.
Technology applications: These are often used in different devices, e.g. sensors, stepper motors, or speakers, where the flat shape is necessary for their operation.
Mounting: This form's flat shape makes it easier mounting, especially when it is necessary to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets allows designers greater flexibility in arranging them in structures, which is more difficult with magnets of other shapes.
Stability: In some applications, the flat base of the flat magnet can provide better stability, reducing the risk of shifting or rotating. It’s important to keep in mind that the optimal shape of the magnet depends on the specific application and requirements. In some 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, objects containing nickel, cobalt or 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. The magnetic field of these objects creates attractive forces, which attract objects made of nickel or other ferromagnetic substances.

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.
Due to these properties, magnets are commonly used in electrical devices, e.g. motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the greatest strength of attraction, making them perfect for applications requiring strong magnetic fields. Additionally, the strength of a magnet depends on its dimensions and the materials used.

Magnets do not attract plastics, glass, wooden materials and most gemstones. Moreover, magnets do not affect certain metals, such as copper items, aluminum, 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 should be noted that high temperatures can weaken the magnet's effect. The Curie temperature is specific to each type of magnet, meaning that under such conditions, the magnet stops being magnetic. Additionally, strong magnets can interfere with the operation of devices, such as navigational instruments, magnetic stripe cards or medical equipment, like pacemakers. For this reason, it is important to avoid placing magnets near such devices.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to immense power, neodymium magnets have the following advantages:

They do not lose power over time - after approximately 10 years, their strength decreases by only ~1% (theoretically),
They are highly resistant to demagnetization by external magnetic field,
By applying a shiny coating of nickel, gold, or silver, the element gains an aesthetic appearance,
They have exceptionally high magnetic induction on the surface of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C and above...
Thanks to the flexibility in shaping or the ability to adapt to specific requirements – neodymium magnets can be produced in many variants of shapes and sizes, which amplifies their universality in usage.
Significant importance in the industry of new technologies – are used in HDD drives, electric drive mechanisms, medical equipment and very highly developed apparatuses.

Disadvantages of neodymium magnets:

They are prone to breaking as they are extremely fragile when subjected to a strong impact. If the magnets are exposed to impacts, it is suggested using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts and simultaneously increases its overall strength,
They lose power at high temperatures. Most neodymium magnets experience permanent loss of strength when heated above 80°C (depending on the form and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
Due to their susceptibility to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
The use of a cover or a magnetic holder is recommended due to the limited possibilities of manufacturing threads or complex shapes in the magnet
Health risk associated with microscopic parts of magnets are risky, if swallowed, which is crucial in the context of child safety. It's also worth noting that tiny parts of these devices have the potential to complicate diagnosis when they are in the body.

Safety Precautions

Do not bring neodymium magnets close to 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.

Dust and powder from neodymium magnets are highly flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnets are not recommended for people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Magnets made of neodymium are particularly delicate, which leads to their breakage.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal and coated with a shiny nickel plating, they are not as hard as steel. At the moment of collision between the magnets, tiny sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.

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

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

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.

Maintain neodymium magnets far from children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Neodymium magnets are the most powerful magnets ever created, and their strength can surprise you.

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional damage to the magnets.

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

The strong magnetic field generated by neodymium magnets can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also damage videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets can become demagnetized at high temperatures.

While Neodymium magnets can lose their magnetic properties at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

So that know how powerful neodymium magnets are and why they are so dangerous, read the article - Dangerous powerful neodymium magnets.