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MP 20x10x5 / N38 - neodymium magnet

ring magnet

catalog number 030184

GTIN: 5906301812012

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external diameter Ø

20 mm [±0,1 mm]

internal diameter Ø

10 mm [±0,1 mm]

height

5 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

2.85 kg / 27.95 N

magnetic induction ~

160.75 mT / 1,607 Gs

max. temperature

≤ 80 °C

4.50 PLN gross price (including VAT) / pcs +

3.66 PLN net price + 23% VAT / pcs

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Specification: ring magnet 20x10x5 / N38 ↑ axial

Characteristics: ring magnet 20x10x5 / N38 ↑ axial

Properties

Values

catalog number

030184

GTIN

5906301812012

production / distribution

Dhit sp. z o.o.

country of origin

Poland / China / Germany

customs code

85059029

external diameter Ø

20 mm [±0,1 mm]

internal diameter Ø

10 mm [±0,1 mm]

height

5 mm [±0,1 mm]

magnetizing direction ?

↑ axial

capacity ~ ?

2.85 kg / 27.95 N

magnetic induction ~ ?

160.75 mT / 1,607 Gs

max. temperature ?

≤ 80 °C

coating type ?

[NiCuNi] nickel

weight

8.84 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

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

Properties

Values

units

Vickers hardness

≥550

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 specific properties, neodymium element MP 20x10x5 / N38 in a ring-shaped form finds extensive use in various industries. Thanks to a powerful magnetic field of ${capacity} kg, which can be described as lifting capacity, they are very helpful in applications that require high magnetic power in a relatively small area. Applications of MP 20x10x5 / N38 magnets include electric motors, generators, sound devices, and several other devices that use magnets for producing motion or storing energy. Despite their powerful strength, they have a comparatively low weight of ${weight} grams, which makes them more practical compared to bulkier alternatives.

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 strength (of the magnet). After approximately 10 years, their strength decreases by only ~1% (theoretically),
They are exceptionally resistant to demagnetization caused by an external magnetic field,
By applying a shiny coating of nickel, gold, or silver, 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...
Due to the option of accurate forming or adaptation to individual needs – neodymium magnets can be produced in a wide range of shapes and sizes, which expands the range of their possible uses.
Significant importance in advanced technologically fields – find application in HDD drives, electric motors, medical equipment or other modern machines.

Disadvantages of neodymium magnets:

They are prone to breaking as they are extremely fragile when subjected to a strong 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 simultaneously increases its overall strength,
Magnets lose their strength 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 shape 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,
They rust in a humid environment - during outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
Potential hazard arising from small pieces of magnets pose a threat, when accidentally ingested, which becomes significant in the context of children's health. Furthermore, small elements of these products are able to hinder the diagnostic process when they are in the body.

Caution with Neodymium Magnets

Neodymium magnets can demagnetize at high temperatures.

Whilst Neodymium magnets can demagnetize at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

Keep neodymium magnets away from 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.

It is essential to keep neodymium magnets out of reach from youngest children.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Neodymium magnets are the most powerful magnets ever invented. Their strength can surprise 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.

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.

Neodymium magnets should not be near people with pacemakers.

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.

The strong magnetic field generated by neodymium magnets can destroy 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.

The magnet coating is made of nickel, so be cautious 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.

Neodymium magnets are extremely delicate, they easily crack and can crumble.

Neodymium magnets are characterized by considerable fragility. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. At the moment of connection between the magnets, sharp metal fragments can be dispersed in different directions.

Neodymium magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant swellings.

Neodymium magnets bounce and clash mutually within a distance of several to around 10 cm from each other.

So that know how powerful neodymium magnets are and why they are so dangerous, see the article - Dangerous strong neodymium magnets.

MP 20x10x5 / N38 - neodymium magnet

ring magnet

Specification: ring magnet 20x10x5 / N38 ↑ axial

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B

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Advantages as well as disadvantages of neodymium magnets NdFeB.

MP 20x10x5 / N38 - neodymium magnet

ring magnet

Specification: ring magnet 20x10x5 / N38 ↑ axial

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd2Fe14B

Recommended articles for purchase

ring magnet 16x8/4x3 / N38 ↑ axial

search holder 67x28 [M8+M10] GW F120 kg / N38

board holder 12x20 black set / N38

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Advantages as well as disadvantages of neodymium magnets NdFeB.

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B