MPL 5x5x1.5 / N38 - lamellar magnet
lamellar magnet
Catalog no 020172
GTIN: 5906301811787
length [±0,1 mm]
5 mm
Width [±0,1 mm]
5 mm
Height [±0,1 mm]
1.5 mm
Weight
0.28 g
Magnetization Direction
↑ axial
Load capacity
0.59 kg / 5.79 N
Magnetic Induction
293.49 mT
Coating
[NiCuNi] nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
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MPL 5x5x1.5 / N38 - lamellar magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Advantages and disadvantages of neodymium magnets NdFeB.
Apart from their superior power, neodymium magnets have these key benefits:
- Their strength remains stable, and after approximately 10 years, it drops only by ~1% (theoretically),
- They show strong resistance to demagnetization from external magnetic fields,
- The use of a decorative nickel surface provides a smooth finish,
- They exhibit elevated levels of magnetic induction near the outer area of the magnet,
- These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to profile),
- Thanks to the possibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in diverse shapes and sizes, which expands their usage potential,
- Important function in advanced technical fields – they find application in HDDs, electric motors, clinical machines or even high-tech tools,
- Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications
Disadvantages of rare earth magnets:
- They are prone to breaking when subjected to a heavy impact. If the magnets are exposed to mechanical hits, it is suggested to place them in a protective case. The steel housing, in the form of a holder, protects the magnet from fracture and reinforces its overall strength,
- High temperatures may significantly reduce the holding force of neodymium magnets. Typically, above 80°C, they experience permanent deterioration in performance (depending on shape). 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,
- Magnets exposed to moisture can corrode. Therefore, for outdoor applications, we recommend waterproof types made of non-metallic composites,
- Using a cover – such as a magnetic holder – is advised due to the limitations in manufacturing fine shapes directly in the magnet,
- Possible threat related to magnet particles may arise, when consumed by mistake, which is significant in the context of child safety. Furthermore, small elements from these assemblies might interfere with diagnostics if inside the body,
- In cases of large-volume purchasing, neodymium magnet cost may be a barrier,
Optimal lifting capacity of a neodymium magnet – what affects it?
The given lifting capacity of the magnet corresponds to the maximum lifting force, assessed under optimal conditions, specifically:
- using a steel plate with low carbon content, serving as a magnetic circuit closure
- with a thickness of minimum 10 mm
- with a refined outer layer
- with zero air gap
- in a perpendicular direction of force
- at room temperature
Impact of factors on magnetic holding capacity in practice
The lifting capacity of a magnet depends on in practice the following factors, according to their importance:
- Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) can cause 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 checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance {between} the magnet and the plate lowers the lifting capacity.
Handle with Care: Neodymium Magnets
Neodymium magnets can become demagnetized at high temperatures.
Whilst Neodymium magnets can demagnetize 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.
Do not give neodymium magnets to youngest children.
Not all neodymium magnets are toys, so do not let children play with them. In the case of small magnets, they can be swallowed and cause choking. 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 primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.
Magnets attract each other within a distance of several to about 10 cm from each other. Remember not to put fingers between magnets or alternatively in their path when attract. Depending on how large the neodymium magnets are, they can lead to a cut or alternatively a fracture.
Neodymium magnets are among the strongest magnets on Earth. The surprising force they generate between each other can shock you.
To use 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.
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 as far away as possible from GPS and smartphones.
Neodymium magnets produce intense magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.
The magnet coating contains nickel, so be cautious 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.
Neodymium magnets should not be near people with pacemakers.
Neodymium magnets produce strong magnetic fields that can interfere 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.
Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.
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 damage devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.
Neodymium magnetic are known for their fragility, which can cause them to shatter.
Neodymium magnets are delicate as well as will break if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of connection between the magnets, small sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.
Be careful!
To raise awareness of why neodymium magnets are so dangerous, see the article titled How dangerous are powerful neodymium magnets?.
