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neodymium magnets

We offer blue color magnetic Nd2Fe14B - our store's offer. All "magnets" in our store are in stock for immediate delivery (see the list). Check out the magnet pricing for more details check the magnet price list

Magnet for searching F300 GOLD

Where to purchase strong neodymium magnet? Holders with magnets in solid and airtight steel casing are perfect for use in difficult weather, including during snow and rain read...

magnets with holders

Magnetic holders can be applied to improve production, underwater exploration, or finding meteorites from gold more information...

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MP 10x7/3.5x3 / N38 - neodymium magnet

ring magnet

catalog number 030180

5.0

external diameter Ø

10 mm [±0,1 mm]

internal diameter Ø

7/3.5 mm [±0,1 mm]

height

3 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

0.90 kg / 8.83 N

magnetic induction ~

214.92 mT / 2,149 Gs

max. temperature

≤ 80 °C

0.82 PLN gross price (including VAT) / pcs +

0.67 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
0.67 PLN
0.82 PLN
price from 680 pcs
0.60 PLN
0.74 PLN
price from 1360 pcs
0.59 PLN
0.73 PLN

Don't know what to choose?

Give us a call tel: +48 22 499 98 98 or write through contact form on our website. You can check the lifting capacity as well as the shape of neodymium magnet in our magnetic mass calculator magnetic calculator

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

Specification: ring magnet 10x7/3.5x3 / N38 ↑ axial

Characteristics: ring magnet 10x7/3.5x3 / N38 ↑ axial
Properties
Values
catalog number
030180
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
external diameter Ø
10 mm [±0,1 mm]
internal diameter Ø
7/3.5 mm [±0,1 mm]
height
3 mm [±0,1 mm]
magnetizing direction ?
↑ axial
capacity ~ ?
0.90 kg / 8.83 N
magnetic induction ~ ?
214.92 mT / 2,149 Gs
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
weight
1.28 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
Due to unique properties, MP 10x7/3.5x3 / N38 in a ring form finds extensive use in various industries. Thanks to a powerful magnetic field of 0.90 kg, which can be described as lifting capacity, they are key in applications that require strong magnetism in a compact space. Usage of MP 10x7/3.5x3 / N38 magnets include electrical mechanisms, generators, audio systems, and numerous other devices that use magnets for generating motion or energy storage. Despite their significant strength, they have a relatively low weight of 1.28 grams, which makes them more convenient to use compared to bulkier alternatives.

Recommended articles for purchase

Advantages and disadvantages of neodymium magnets NdFeB.

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

  • They do not lose power over time. After about 10 years, their power decreases by only ~1% (theoretically),
  • They are exceptionally resistant to demagnetization caused by an external magnetic field,
  • In other words, thanks to the shiny nickel, gold, or silver finish, the element gains an visually attractive appearance,
  • They exhibit extremely high magnetic induction on the surface of the magnet,
  • Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C and above...
  • The ability for precise shaping and customization to specific needs – neodymium magnets can be produced in various forms and dimensions, which enhances their versatility in applications.
  • Key role in the industry of new technologies – are used in HDD drives, electric motors, medical equipment or very modern machines.

Disadvantages of neodymium magnets:

  • They are 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 at the same time increases its overall strength,
  • Magnets lose their power due to exposure to high temperatures. In most cases, when the temperature exceeds 80°C, these magnets experience permanent reduction in strength (although it is worth noting that this is dependent on the form and size of the magnet). To avoid this problem, we offer special magnets marked with the [AH] symbol, which exhibit high temperature resistance. They can operate even at temperatures as high as 230°C or more,
  • 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,
  • The use of a cover - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
  • Health risk associated with microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting young children. Additionally, small elements of these products are able to hinder the diagnostic process when they are in the body.

Exercise Caution with Neodymium Magnets

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets generate very strong magnetic fields that can 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.

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

Neodymium magnets produce intense magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy videos, televisions, CRT computer monitors. Do not forget to keep neodymium magnets at a safe distance from these electronic devices.

Neodymium magnets can demagnetize 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.

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.

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

Remember that neodymium magnets are not toys. Do not allow children to play 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.

Avoid bringing neodymium magnets close to a phone or GPS.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

Neodymium magnets can attract to each other, pinch the skin, and cause significant swellings.

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

Dust and powder from neodymium magnets are 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 over 10 times stronger than ferrite magnets (the ones in speakers), 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.

Neodymium magnetic are particularly fragile, which leads to 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.

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

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tel: +48 888 99 98 98