tel: +48 888 99 98 98

neodymium magnets

We provide red color magnetic Nd2Fe14B - our offer. Practically all "neodymium magnets" in our store are in stock for immediate delivery (check the list). Check out the magnet pricing for more details check the magnet price list

Magnets for fishing F300 GOLD

Where to purchase very strong magnet? Magnetic holders in solid and airtight enclosure are perfect for use in difficult, demanding weather conditions, including during rain and snow read...

magnets with holders

Holders with magnets can be used to enhance production processes, underwater discoveries, or locating meteors made of metal see...

We promise to ship your order if the order is placed before 2:00 PM on weekdays.

Dhit sp. z o.o. logo
Product available shipping tomorrow!

MPL 30x5x5 / N38 - neodymium magnet

lamellar magnet

catalog number 020448

GTIN: 5906301811923

no reviews

length

30 mm [±0,1 mm]

width

5 mm [±0,1 mm]

height

5 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

4.84 kg / 47.46 N

magnetic induction ~

446.27 mT / 4,463 Gs

max. temperature

≤ 80 °C

4.15 gross price (including VAT) / pcs +

3.37 ZŁ net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
3.37 ZŁ
4.15 ZŁ
price from 179 pcs
3.17 ZŁ
3.90 ZŁ
price from 653 pcs
2.97 ZŁ
3.65 ZŁ

Don't know what to choose?

Give us a call tel: +48 888 99 98 98 or contact us through form on the contact page. You can check the mass and the shape of neodymium magnet in our magnetic mass calculator magnetic mass calculator

Orders placed by 2:00 PM will be shipped on the same business day.

Specification: lamellar magnet 30x5x5 / N38 ↑ axial

Characteristics: lamellar magnet 30x5x5 / N38 ↑ axial
Properties
Values
catalog number
020448
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
length
30 mm [±0,1 mm]
width
5 mm [±0,1 mm]
height
5 mm [±0,1 mm]
magnetizing direction ?
↑ axial
capacity ~ ?
4.84 kg / 47.46 N
magnetic induction ~ ?
446.27 mT / 4,463 Gs
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
weight
5.63 g
execution tolerance
± 0.1 mm

Magnetic properties of the material N38

material characteristics N38
Properties
Values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
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 sintered neodymium magnets Nd2Fe14B

Physical properties of sintered neodymium magnets Nd2Fe14B
Properties
Values
units
Vickers hardness
≥550
Hv
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
Flat neodymium magnets i.e. MPL 30x5x5 / N38 are magnets made from neodymium in a flat form. They are appreciated for their exceptionally potent magnetic properties, which surpass ordinary ferrite magnets.
Thanks to their high strength, flat magnets are regularly applied in products that need very strong attraction.
Most common temperature resistance of flat magnets is 80°C, but depending on the dimensions, this value grows.
Additionally, flat magnets usually have different coatings applied to their surfaces, e.g. nickel, gold, or chrome, for enhancing their corrosion resistance.
The magnet with the designation MPL 30x5x5 / N38 and a magnetic strength 4.84 kg weighing just 5.63 grams, making it the perfect choice for applications requiring a flat shape.
Neodymium flat magnets present a range of advantages versus other magnet shapes, which make them being a perfect solution for a multitude of projects:
Contact surface: Thanks to their flat shape, flat magnets guarantee a larger contact surface with adjacent parts, which is beneficial in applications requiring a stronger magnetic connection.
Technology applications: They are often used in different devices, such as sensors, stepper motors, or speakers, where the thin and wide shape is crucial for their operation.
Mounting: This form's flat shape makes it easier mounting, particularly when it is necessary to attach the magnet to some surface.
Design flexibility: The flat shape of the magnets permits creators greater flexibility in arranging them in devices, which can be more difficult with magnets of other shapes.
Stability: In some applications, the flat base of the flat magnet can offer better stability, reducing the risk of shifting or rotating. It’s important to keep in mind that the optimal shape of the magnet is dependent on the specific project and requirements. In certain 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 elements, objects containing nickel, materials with cobalt or special alloys of ferromagnetic metals. Moreover, 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 magnets creates attractive interactions, which affect materials containing cobalt or other magnetic materials.

Magnets have two main poles: north (N) and south (S), which attract each other when they are different. Poles of the same kind, e.g. two north poles, act repelling on each other.
Due to these properties, magnets are often 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 powerful magnetic fields. Moreover, the strength of a magnet depends on its size and the materials used.
Not all materials react to magnets, and examples of such substances are plastics, glass items, wood or most gemstones. Moreover, magnets do not affect certain metals, such as copper items, aluminum materials, 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. Interestingly, strong magnets can interfere with the operation of devices, such as compasses, magnetic stripe cards and even electronic devices sensitive to magnetic fields. For this reason, it is important to avoid placing magnets near such devices.

Compilation of suggested goods

Advantages and disadvantages of neodymium magnets NdFeB.

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

  • They do not lose strength over time - after 10 years, their strength decreases by only ~1% (theoretically),
  • They protect against demagnetization caused by external magnetic sources very well,
  • In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
  • They exhibit very high magnetic induction on the surface of the magnet,
  • Magnetic neodymium magnets are characterized by very high magnetic induction on the surface of the magnet and can operate (depending on the shape) even at temperatures of 230°C or higher...
  • Due to the option of accurate forming or adaptation to individual needs – neodymium magnets can be produced in many variants of shapes or sizes, which amplifies their universality in usage.
  • Significant importance in advanced technologically fields – are used in computer drives, electric drive mechanisms, medical apparatus and various technologically advanced devices.

Disadvantages of neodymium magnets:

  • They can break as they are fragile when subjected to a powerful impact. If the magnets are exposed to impacts, we recommend using magnets in a protective case. The steel housing in the form of a holder protects the magnet from impacts and also increases its overall strength,
  • They lose strength 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,
  • They rust in a humid environment. For outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
  • 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
  • Potential hazard to health from tiny fragments of magnets are risky, in case of ingestion, which becomes significant in the context of children's health. It's also worth noting that tiny parts of these products have the potential to hinder the diagnostic process when they are in the body.

Safety Guidelines with Neodymium Magnets

Neodymium magnets are extremely delicate, they easily fall apart as well as can become damaged.

Magnets made of neodymium are fragile and will break if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal and coated with a shiny nickel plating, they are not as hard as steel. At the moment of connection between the magnets, tiny sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

Neodymium magnets can become demagnetized at high temperatures.

Despite the general resilience of magnets, their ability to retain their magnetic strength can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

  Magnets are not toys, youngest should not play with them.

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.

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

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.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

If have a finger between or alternatively on the path of attracting magnets, there may be a severe cut or a fracture.

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

Keep neodymium magnets as far away as possible from GPS and smartphones.

Neodymium magnets generate strong magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

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

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

Keep neodymium magnets away from the wallet, computer, and TV.

Neodymium magnets produce intense magnetic fields that can damage 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.

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

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98