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neodymium magnets

We provide yellow color magnets Nd2Fe14B - our store's offer. All "neodymium magnets" in our store are available for immediate purchase (check the list). See the magnet price list for more details see the magnet price list

Magnets for water searching F400 GOLD

Where to buy strong neodymium magnet? Magnet holders in airtight, solid steel casing are excellent for use in variable and difficult weather, including during rain and snow more...

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Magnetic holders can be applied to enhance manufacturing, exploring underwater areas, or finding space rocks made of ore more...

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MPL 100x40x20 / N38 - neodymium magnet

lamellar magnet

catalog number 020109

GTIN: 5906301811152

5.0

length

100 mm [±0,1 mm]

width

40 mm [±0,1 mm]

height

20 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

99.89 kg / 979.59 N

magnetic induction ~

337.24 mT / 3,372 Gs

max. temperature

≤ 80 °C

336.00 PLN gross price (including VAT) / pcs +

273.17 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
273.17 PLN
336.00 PLN
price from 3 pcs
256.78 PLN
315.84 PLN
price from 9 pcs
240.39 PLN
295.68 PLN

Don't know what to choose?

Give us a call tel: +48 22 499 98 98 or write via form on our website. You can check the lifting capacity and the appearance of 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 100x40x20 / N38 ↑ axial

Characteristics: lamellar magnet 100x40x20 / N38 ↑ axial
Properties
Values
catalog number
020109
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
length
100 mm [±0,1 mm]
width
40 mm [±0,1 mm]
height
20 mm [±0,1 mm]
magnetizing direction ?
↑ axial
capacity ~ ?
99.89 kg / 979.59 N
magnetic induction ~ ?
337.24 mT / 3,372 Gs
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
weight
600.00 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 in relation to other magnet shapes, which cause them to be an excellent solution for various uses:
Contact Surface: Due to their flat shape, disc magnets guarantee a significant contact surface with other elements, which is beneficial in applications requiring a stronger magnetic connection.
Applications in Technology: They are often utilized in different devices, such as sensors, stepper motors, or speakers, where a flat shape is important for their operation.
Mounting: Their flat shape makes mounting, especially when it's necessary to adhere the magnet to a surface.
Design Flexibility: The disc shape of the magnets provides designers with greater flexibility in placing them in constructions, which can sometimes be more difficult with magnets of other shapes.
Stability: In some applications, the flat base of a disc magnet can offer better stability, minimizing the risk of shifting or rotating. However, it's important to remember that the optimal shape of a magnet depends on the specific project and requirements. In certain cases, other shapes, such as cylindrical or spherical, may be more suitable.

List recommended items

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from immense power, neodymium magnets have the following advantages:

  • They do not lose their power (of the magnet). After about 10 years, their power decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic sources,
  • Thanks to the shiny finish and nickel, gold, or silver coating, they have an aesthetic appearance,
  • They have very high magnetic induction on the surface of the magnet,
  • Magnetic neodymium magnets are characterized by hugely high magnetic induction on the surface of the magnet and can operate (depending on the shape) even at temperatures of 230°C or higher...
  • Thanks to the flexibility in shaping and the ability to adapt to specific requirements – neodymium magnets can be produced in a wide range of shapes and sizes, which enhances their versatility in applications.
  • Wide application in the industry of new technologies – find application in computer drives, electric drive mechanisms, medical apparatus and other highly developed apparatuses.

Disadvantages of neodymium magnets:

  • They can break as they are extremely fragile when subjected to a strong impact. If the magnets are exposed to impacts, we recommend using magnets in a steel housing. The steel housing in the form of a holder protects the magnet from impacts and simultaneously increases its overall strength,
  • They lose power 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,
  • Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
  • 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
  • Possible danger to health from tiny fragments of magnets pose a threat, when accidentally ingested, which is particularly important in the context of children's health. Additionally, small elements of these products are able to be problematic in medical diagnosis when they are in the body.

Safety Precautions

Neodymium magnets can demagnetize at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

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

Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

Never bring neodymium magnets close to a phone and GPS.

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.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

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.

If joining of neodymium magnets is not under control, then they may crumble and also crack. Remember not to move them to each other or have them firmly in hands at a distance less than 10 cm.

Neodymium magnets should not be near people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they 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.

Neodymium magnetic are especially delicate, resulting in their breakage.

Neodymium magnets are characterized by significant fragility. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Avoid contact with neodymium magnets 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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times more powerful, 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.

  Magnets should not be treated as toys. Therefore, it is not recommended for youngest children to have access to them.

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 severe injuries, and even death.

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

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98