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neodymium magnets

We provide blue color magnetic Nd2Fe14B - our store's offer. All "neodymium magnets" on our website are available for immediate purchase (check the list). Check out the magnet price list for more details see the magnet price list

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MPL 30x20x10 / N38 - neodymium magnet

lamellar magnet

catalog number 020141

GTIN: 5906301811473

5.0

length

30 mm [±0,1 mm]

width

20 mm [±0,1 mm]

height

10 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

17.29 kg / 169.56 N

magnetic induction ~

371.57 mT / 3,716 Gs

max. temperature

≤ 80 °C

14.50 PLN gross price (including VAT) / pcs +

11.79 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
11.79 PLN
14.50 PLN
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13.63 PLN
price from 187 pcs
10.38 PLN
12.77 PLN

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Call us tel: +48 888 99 98 98 or contact us through form on the contact page. You can check the power and the shape of neodymium magnets in our power calculator power calculator

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

Specification: lamellar magnet 30x20x10 / N38 ↑ axial

Characteristics: lamellar magnet 30x20x10 / N38 ↑ axial
Properties
Values
catalog number
020141
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
length
30 mm [±0,1 mm]
width
20 mm [±0,1 mm]
height
10 mm [±0,1 mm]
magnetizing direction ?
↑ axial
capacity ~ ?
17.29 kg / 169.56 N
magnetic induction ~ ?
371.57 mT / 3,716 Gs
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
weight
45.00 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
Neodymium disc magnets present a range of advantages compared to other magnet shapes, which cause them to be an excellent solution for various uses:
Contact Surface: Thanks to their flat shape, disc magnets guarantee a significant contact surface with adjoining parts, which can be beneficial in applications requiring a stronger magnetic connection.
Applications in Technology: These magnets are often used in different devices, like sensors, stepper motors, or speakers, where a flat shape is crucial for their operation.
Mounting: This form's flat shape makes mounting, especially when there's a need to adhere the magnet to another surface.
Design Flexibility: The disc shape of the magnets gives designers with significant flexibility in arranging them in devices, which can be more difficult with magnets of more complex shapes.
Stability: In certain applications, the flat base of a disc magnet can provide better stability, minimizing the risk of shifting or rotating. Nevertheless, one should bear in mind that the optimal shape of a magnet depends on the specific application and requirements. In certain cases, other shapes, such as cylindrical or spherical, might be more suitable.

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Advantages as well as disadvantages of neodymium magnets NdFeB.

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

  • They do not lose their power (of the magnet). After approximately 10 years, their strength decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic field,
  • In other words, thanks to the shiny nickel, gold, or silver finish, the element gains an aesthetic appearance,
  • They exhibit extremely 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...
  • The ability for precise shaping or customization to specific needs – neodymium magnets can be produced in many variants of shapes or sizes, which enhances their versatility in applications.
  • Wide application in advanced technologically fields – are used in HDD drives, electric drive mechanisms, medical apparatus and very advanced devices.

Disadvantages of neodymium magnets:

  • They are prone to breaking as they are fragile when subjected to a powerful impact. If the magnets are exposed to impacts, it is suggested using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts and also increases its overall strength,
  • High temperatures can reduce the strength of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent loss in strength (although it is dependent on the shape and size). To prevent this, we offer special magnets marked with the symbol [AH], which are highly resistant to high temperatures. They can operate even at temperatures up to 230°C, making them an ideal solution for applications requiring high-temperature operation,
  • Due to their susceptibility to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
  • Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
  • Possible danger to health from tiny fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting young children. Additionally, tiny parts of these products can hinder the diagnostic process in case of swallowing.

Exercise Caution with Neodymium Magnets

The magnet is coated with nickel - be careful if you have an 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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnets should not be near people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes 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.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Magnets attract each other within a distance of several to about 10 cm from each other. Don't put your fingers in the path of magnet attraction, because a significant injury may occur. Depending on how massive the neodymium magnets are, they can lead to a cut or alternatively a fracture.

Dust and powder from neodymium magnets are highly flammable.

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

Neodymium magnets are particularly delicate, resulting in their breakage.

Neodymium magnetic are fragile and will crack 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 pieces can be propelled in various directions at high speed. Eye protection is recommended.

Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.

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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

  Neodymium magnets should not be around children.

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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times stronger, and their strength can shock you.

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional disruption to the magnets.

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.

Under no circumstances should neodymium magnets be brought 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.

Please read the article - What danger lies in neodymium magnets? You will learn how to handle them properly.

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tel: +48 888 99 98 98