MPL 11x11x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020116
GTIN: 5906301811220
length [±0,1 mm]
11 mm
Width [±0,1 mm]
11 mm
Height [±0,1 mm]
1 mm
Weight
0.91 g
Magnetization Direction
↑ axial
Load capacity
0.87 kg / 8.53 N
Magnetic Induction
100.10 mT
Coating
[NiCuNi] nickel
0.873 ZŁ with VAT / pcs + price for transport
0.710 ZŁ net + 23% VAT / pcs
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MPL 11x11x1 / N38 - lamellar magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Thanks to their high strength, flat magnets are commonly applied in structures that require very strong attraction.
Typical temperature resistance of flat magnets is 80°C, but depending on the dimensions, this value can increase.
In addition, flat magnets usually have special coatings applied to their surfaces, e.g. nickel, gold, or chrome, to increase their strength.
The magnet labeled MPL 11x11x1 / N38 and a magnetic strength 0.87 kg weighing just 0.91 grams, making it the ideal choice for projects needing a flat magnet.
Contact surface: Due to their flat shape, flat magnets guarantee a greater contact surface with other components, which is beneficial in applications needing a stronger magnetic connection.
Technology applications: They are often utilized 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, especially when it is required to attach the magnet to another surface.
Design flexibility: The flat shape of the magnets gives the possibility designers greater flexibility in placing 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. It’s important to keep in mind that the optimal shape of the magnet depends on the specific project and requirements. In certain cases, other shapes, such as cylindrical or spherical, may be a better choice.
Magnets have two poles: north (N) and south (S), which interact with each other when they are oppositely oriented. Poles of the same kind, such as two north poles, repel each other.
Due to these properties, magnets are often used in magnetic technologies, e.g. motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the highest power of attraction, making them indispensable for applications requiring strong magnetic fields. Moreover, the strength of a magnet depends on its size and the material it is made of.
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. Interestingly, strong magnets can interfere with the operation of devices, such as navigational instruments, credit cards or medical equipment, like pacemakers. Therefore, it is important to exercise caution when using magnets.
Advantages as well as disadvantages of neodymium magnets NdFeB.
In addition to their remarkable field intensity, neodymium magnets offer the following advantages:
- They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (in laboratory conditions),
- Their ability to resist magnetic interference from external fields is among the best,
- By applying a shiny layer of gold, the element gains a sleek look,
- They exhibit extremely high levels of magnetic induction near the outer area of the magnet,
- With the right combination of materials, they reach excellent thermal stability, enabling operation at or above 230°C (depending on the form),
- The ability for precise shaping as well as adaptation to specific needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which extends the scope of their use cases,
- Wide application in cutting-edge sectors – they serve a purpose in HDDs, electromechanical systems, diagnostic apparatus as well as sophisticated instruments,
- Thanks to their power density, small magnets offer high magnetic performance, while occupying minimal space,
Disadvantages of neodymium magnets:
- They can break when subjected to a sudden 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 fracture and additionally enhances its overall strength,
- They lose magnetic force at elevated temperatures. Most neodymium magnets experience permanent reduction in strength when heated above 80°C (depending on the geometry and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
- Due to corrosion risk in humid conditions, it is common to use sealed magnets made of rubber for outdoor use,
- Limited ability to create complex details in the magnet – the use of a external casing is recommended,
- Safety concern linked to microscopic shards may arise, especially if swallowed, which is important in the protection of children. It should also be noted that miniature parts from these magnets have the potential to disrupt scanning if inside the body,
- Higher purchase price is an important factor to consider compared to ceramic magnets, especially in budget-sensitive applications
Maximum magnetic pulling force – what contributes to it?
The given strength of the magnet corresponds to the optimal strength, measured in the best circumstances, namely:
- with mild steel, serving as a magnetic flux conductor
- having a thickness of no less than 10 millimeters
- with a polished side
- in conditions of no clearance
- in a perpendicular direction of force
- at room temperature
Impact of factors on magnetic holding capacity in practice
Practical lifting force is determined by elements, by priority:
- 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.
* Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the holding force is lower. Additionally, even a slight gap {between} the magnet and the plate decreases the load capacity.
Exercise Caution with Neodymium Magnets
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 happens because such devices have a function to deactivate them in a magnetic field.
Neodymium magnets are highly susceptible to damage, resulting in their cracking.
In the event of a collision between two neodymium magnets, it can result in them getting chipped. They are coated with a shiny nickel plating similar to steel, but they are not as hard. 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 are among the strongest magnets on Earth. The astonishing force they generate between each other can surprise you.
Familiarize yourself with our information to properly handle these magnets and avoid significant injuries to your body and prevent disruption to the magnets.
Do not bring neodymium magnets close to GPS and smartphones.
Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.
The magnet is coated with nickel. Therefore, exercise caution if you have an 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.
Keep neodymium magnets away from TV, wallet, and computer HDD.
Magnetic fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.
Maintain neodymium magnets far from youngest children.
Neodymium magnets are not toys. Be cautious and make sure no child plays with them. They can be a significant choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even 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 around 10 cm from each other. Remember not to place fingers between magnets or in their path when they attract. Magnets, depending on their size, are able even cut off a finger or alternatively there can be a severe pressure or even a fracture.
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.
Safety rules!
So you are aware of why neodymium magnets are so dangerous, see the article titled How very dangerous are very powerful neodymium magnets?.
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