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MPL 30x15x2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020140

GTIN: 5906301811466

length [±0,1 mm]

30 mm

Width [±0,1 mm]

15 mm

Height [±0,1 mm]

2 mm

Weight

6.75 g

Magnetization Direction

↑ axial

Load capacity

3.35 kg / 32.85 N

Magnetic Induction

115.11 mT

Coating

[NiCuNi] nickel

3.89 ZŁ with VAT / pcs + price for transport

3.16 ZŁ net + 23% VAT / pcs

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MPL 30x15x2 / N38 - lamellar magnet

Specification/characteristics MPL 30x15x2 / N38 - lamellar magnet

properties

values

Cat. no.

020140

GTIN

5906301811466

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

30 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

6.75 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

3.35 kg / 32.85 N

Magnetic Induction ~ ?

115.11 mT

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

coercivity bHc ?

10.8-11.5

kOe

coercivity bHc ?

860-915

kA/m

actual internal force iHc

≥ 12

kOe

actual internal force iHc

≥ 955

kA/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

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 30x15x2 / N38 are magnets made from neodymium in a flat form. They are appreciated for their very strong magnetic properties, which outshine standard ferrite magnets.
Due to their strength, flat magnets are commonly applied in devices that require very strong attraction.
The standard temperature resistance of these magnets is 80 °C, but depending on the dimensions, this value can increase.
Additionally, flat magnets commonly have special coatings applied to their surfaces, such as nickel, gold, or chrome, to improve their strength.
The magnet labeled MPL 30x15x2 / N38 and a magnetic force 3.35 kg with a weight of only 6.75 grams, making it the excellent choice for applications requiring a flat shape.

Neodymium flat magnets present a range of advantages compared to other magnet shapes, which cause them being the best choice for many applications:
Contact surface: Due to their flat shape, flat magnets ensure a greater contact surface with other components, which can be beneficial in applications requiring 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 a lot of flexibility in arranging them in structures, 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 shifting or rotating. However, it's important to note that the optimal shape of the magnet depends on the specific application and requirements. In some cases, other shapes, like cylindrical or spherical, are a better choice.

Attracted by magnets are objects made of ferromagnetic materials, such as iron, nickel, materials with cobalt or special alloys of ferromagnetic metals. Additionally, magnets may weaker affect alloys containing iron, such as steel. Magnets are used in many fields.

Magnets work thanks to the properties of their magnetic field, which arises from the ordered movement of electrons in their structure. Magnetic fields of magnets creates attractive interactions, which affect objects made of nickel or other magnetic materials.

Magnets have two poles: north (N) and south (S), which interact with each other when they are different. Poles of the same kind, e.g. two north poles, repel each other.
Due to these properties, 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 powerful magnetic fields. Moreover, 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 plastic, glass items, wood or most gemstones. Additionally, magnets do not affect most metals, such as copper, aluminum, copper, aluminum, and gold. Although these metals conduct 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 high temperatures can weaken the magnet's effect. 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 medical equipment, like pacemakers. Therefore, it is important to exercise caution when using magnets.

A flat magnet with classification N50 and N52 is a strong and extremely powerful magnetic product in the form of a plate, featuring high force and universal applicability. Attractive price, 24h delivery, stability and multi-functionality.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years, the decline in efficiency is only ~1% (based on calculations),
Their ability to resist magnetic interference from external fields is impressive,
Thanks to the glossy finish and nickel coating, they have an elegant appearance,
Magnetic induction on the surface of these magnets is very strong,
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),
With the option for customized forming and targeted design, these magnets can be produced in numerous shapes and sizes, greatly improving design adaptation,
Significant impact in modern technologies – they find application in computer drives, electric drives, diagnostic apparatus along with technologically developed systems,
Compactness – despite their small size, they provide high effectiveness, making them ideal for precision applications

Disadvantages of magnetic elements:

They are fragile when subjected to a heavy impact. If the magnets are exposed to external force, it is suggested to place them in a metal holder. The steel housing, in the form of a holder, protects the magnet from cracks and strengthens its overall durability,
Magnets lose power when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (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,
Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of synthetic coating for outdoor use,
Limited ability to create complex details in the magnet – the use of a magnetic holder is recommended,
Possible threat from tiny pieces may arise, especially if swallowed, which is notable in the context of child safety. Additionally, miniature parts from these assemblies can disrupt scanning after being swallowed,
Due to a complex production process, their cost is considerably higher,

Maximum lifting force for a neodymium magnet – what it depends on?

The given lifting capacity of the magnet represents the maximum lifting force, assessed in the best circumstances, specifically:

using a steel plate with low carbon content, acting as a magnetic circuit closure
with a thickness of minimum 10 mm
with a refined outer layer
with no separation
under perpendicular detachment force
at room temperature

Magnet lifting force in use – key factors

Practical lifting force is dependent on factors, listed from the most critical to the less significant:

Air gap between the magnet and the plate, as even a very small distance (e.g. 0.5 mm) causes a drop in lifting force of up to 50%.
Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance {between} the magnet and the plate lowers the lifting capacity.

Caution with Neodymium Magnets

Neodymium magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant injuries.

If joining of neodymium magnets is not controlled, at that time they may crumble and also crack. Remember not to move them to each other or hold them firmly in hands at a distance less than 10 cm.

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

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. Avoid placing neodymium magnets in close proximity to electronic devices.

Neodymium magnets are the strongest magnets ever created, and their power can shock you.

Familiarize yourself with our information to properly handle these magnets and avoid significant swellings to your body and prevent disruption to the magnets.

Neodymium magnets can become demagnetized 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.

Do not bring neodymium magnets 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 flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

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 is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

Maintain neodymium magnets away from youngest 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 extremely fragile, leading to breaking.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal as well as 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.

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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Warning!

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