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MPL 5x5x1 / N38 - lamellar magnet

lamellar magnet

Catalog no 020170

GTIN: 5906301811763

length [±0,1 mm]

5 mm

Width [±0,1 mm]

5 mm

Height [±0,1 mm]

1 mm

Weight

0.19 g

Magnetization Direction

↑ axial

Load capacity

0.39 kg / 3.82 N

Magnetic Induction

209.53 mT

Coating

[NiCuNi] nickel

0.18 ZŁ with VAT / pcs + price for transport

0.15 ZŁ net + 23% VAT / pcs

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MPL 5x5x1 / N38 - lamellar magnet

Specification/characteristics MPL 5x5x1 / N38 - lamellar magnet

properties

values

Cat. no.

020170

GTIN

5906301811763

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.19 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

0.39 kg / 3.82 N

Magnetic Induction ~ ?

209.53 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 5x5x1 / N38 are magnets created from neodymium in a flat form. They are appreciated for their exceptionally potent magnetic properties, which surpass standard ferrite magnets.
Due to their power, flat magnets are frequently applied in structures that need strong holding power.
Most common temperature resistance of flat magnets is 80 °C, but depending on the dimensions, this value can increase.
Moreover, flat magnets often have different coatings applied to their surfaces, e.g. nickel, gold, or chrome, to improve their durability.
The magnet with the designation MPL 5x5x1 / N38 i.e. a magnetic force 0.39 kg with a weight of just 0.19 grams, making it the ideal choice for applications requiring a flat shape.

Neodymium flat magnets present a range of advantages versus other magnet shapes, which cause them being a perfect solution for many applications:
Contact surface: Thanks 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: They are often utilized in different devices, e.g. sensors, stepper motors, or speakers, where the thin and wide shape is important for their operation.
Mounting: This form's flat shape makes mounting, particularly when it is required to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets allows creators a lot of flexibility in arranging them in structures, which is more difficult with magnets of more complex shapes.
Stability: In some applications, the flat base of the flat magnet may offer better stability, minimizing the risk of sliding or rotating. However, one should remember that the optimal shape of the magnet depends on the specific application and requirements. In some cases, other shapes, such as cylindrical or spherical, are more appropriate.

How do magnets work? Magnets attract ferromagnetic materials, such as iron, nickel, cobalt or alloys of metals with magnetic properties. Moreover, magnets may lesser affect alloys containing iron, such as steel. Magnets are used in many fields.

The operation of magnets is based on the properties of the magnetic field, which is generated by the movement of electric charges within their material. Magnetic fields of these objects creates attractive forces, which attract 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.
Due to these properties, magnets are regularly used in magnetic technologies, e.g. motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the greatest strength of attraction, making them indispensable for applications requiring powerful magnetic fields. Moreover, the strength of a magnet depends on its dimensions and the material it is made of.

Magnets do not attract plastics, glass items, wood or most gemstones. Additionally, magnets do not affect most 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 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. Additionally, strong magnets can interfere with the operation of devices, such as navigational instruments, credit cards and even medical equipment, like pacemakers. 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 shaped like a plate, that offers strong holding power and versatile application. Very good price, 24h delivery, resistance and universal usability.

Advantages as well as disadvantages of neodymium magnets NdFeB.

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

Their power is durable, and after around ten years, it drops only by ~1% (theoretically),
They show strong resistance to demagnetization from external magnetic fields,
By applying a shiny layer of nickel, the element gains a modern look,
Magnetic induction on the surface of these magnets is notably high,
Thanks to their high temperature resistance, they can operate (depending on the geometry) even at temperatures up to 230°C or more,
Thanks to the flexibility in shaping and the capability to adapt to specific requirements, neodymium magnets can be created in different geometries, which broadens their application range,
Key role in new technology industries – they find application in hard drives, rotating machines, medical equipment as well as high-tech tools,
Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of neodymium magnets:

They are fragile when subjected to a powerful impact. If the magnets are exposed to external force, we recommend in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from breakage while also reinforces its overall resistance,
They lose field intensity at extreme temperatures. Most neodymium magnets experience permanent loss 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,
They rust in a moist environment – during outdoor use, we recommend using encapsulated magnets, such as those made of rubber,
Limited ability to create internal holes in the magnet – the use of a mechanical support is recommended,
Potential hazard due to small fragments may arise, if ingested accidentally, which is notable in the protection of children. It should also be noted that miniature parts from these products have the potential to disrupt scanning when ingested,
In cases of large-volume purchasing, neodymium magnet cost may be a barrier,

Magnetic strength at its maximum – what affects it?

The given holding capacity of the magnet means the highest holding force, assessed in the best circumstances, that is:

with mild steel, used as a magnetic flux conductor
of a thickness of at least 10 mm
with a smooth surface
with no separation
in a perpendicular direction of force
in normal thermal conditions

Determinants of lifting force in real conditions

In practice, the holding capacity of a magnet is affected by the following aspects, arranged from the most important to the least relevant:

Air gap between the magnet and the plate, since 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.

* Lifting capacity was assessed using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a slight gap {between} the magnet and the plate lowers the holding force.

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 flammable.

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

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

The strong magnetic field generated by neodymium magnets can destroy 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.

Neodymium magnets should not be around youngest children.

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.

Neodymium magnets can become demagnetized at high temperatures.

Even though magnets have been observed 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.

The magnet coating contains nickel, so be cautious if you have a nickel 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 known for being fragile, which can cause them to become damaged.

Neodymium magnets are extremely fragile, and by joining them in an uncontrolled manner, they will crumble. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of collision between the magnets, small metal fragments can be dispersed in different directions.

Neodymium magnets are over 10 times more powerful than ferrite magnets (the ones in speakers), and their strength can surprise 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.

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

Neodymium magnets jump and also touch each other mutually within a radius of several to around 10 cm from each other.

People with pacemakers are advised to avoid neodymium magnets.

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.

Warning!

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