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MW 18.9x10 / N38 - neodymium magnet

cylindrical magnet

catalog number 010036

5.0

diameter Ø

18.9 mm

height

10 mm

magnetizing direction

→ diametrical

capacity ~

10.45 kg / 102.51 N

magnetic induction ~

450.35 mT / 4,503 Gs

max. temperature

≤ 80 °C

11.07 PLN gross price (including VAT) / pcs +

9.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs

9.00 PLN

11.07 PLN

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Do you have trouble in choosing?

Call us tel: +48 22 499 98 98 or contact us through form on the contact page. You can check the lifting capacity as well as the shape of neodymium magnet in our force calculator magnetic calculator

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

Specification: cylindrical magnet 18.9x10 / N38 → diametrical

Characteristics: cylindrical magnet 18.9x10 / N38 → diametrical

Properties

Values

production / distribution

Dhit sp. z o.o.

country of origin

Poland / China / Germany

customs code

85059029

diameter Ø ?

18.9 mm

height ?

10 mm

magnetizing direction ?

→ diametrical

capacity ~ ?

10.45 kg / 102.51 N

magnetic induction ~ ?

450.35 mT / 4,503 Gs

max. temperature ?

≤ 80 °C

coating type ?

[NiCuNi] nickel

weight

21.04 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

Cylindrical Neodymium Magnets min. MW 18.9x10 / N38 are magnets made of neodymium in a cylindrical shape. They are known for their very strong magnetic properties, which exceed ordinary ferrite magnets. Because of their power, they are often used in products that require strong adhesion. The standard temperature resistance of these magnets is 80°C, but for magnets in a cylindrical form, this temperature increases with the growth of the magnet. Moreover, various special coatings, such as nickel, gold, or chrome, are frequently applied to the surface of neodymium magnets to enhance their resistance to corrosion. The shape of a cylinder is also one of the most popular among neodymium magnets. The magnet designated MW 18.9x10 / N38 with a magnetic force 10.45 kg has a weight of only 21.04 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, are the strongest known material for magnet production. Their production process is complicated and includes melting special neodymium alloys along with other metals such as iron and boron. After appropriate processing, such as heat and mechanical treatment, the magnets become ready for use in many applications, including electric motors, audio-video equipment, and in the automotive and aerospace industries.
Moreover, even though neodymium is a component of the strongest magnets, they are susceptible to corrosion in humid environments. For this reason, they are coated with a coating of gold-nickel to protect them from corrosion. Interestingly that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, are brittle, which requires special caution during their handling. For this reason, any mechanical processing should be done before they are magnetized.

In terms of safety, there are several recommendations regarding the use of these magnets. It is advisable to avoid their use in acidic, basic, organic environments or where solvents are present, and also in water or oil. Additionally, they can distort data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not always certain.

In terms of purchasing of cylindrical neodymium magnets, many companies offer such products. One of the recommended suppliers is our company Dhit, situated in Ożarów Mazowiecki, the address is available directly in the contact tab. It is recommended to visit the site for the latest information and offers, and before visiting, please call.

Although, cylindrical neodymium magnets are very practical in many applications, they can also constitute certain risk. Because of their strong magnetic power, they can pull metallic objects with great force, which can lead to damaging skin or other materials, especially fingers. One should not use neodymium magnets near electronic devices or data storage devices, such as credit cards, as they can destroy these devices in terms of magnetic recording. Moreover, neodymium magnets are prone to corrosion in humid environments, thus they are coated with a thin e.g., nickel layer. In short, although they are handy, they should be handled with due caution.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are presently the strongest available magnets on the market. They are produced through a complicated sintering process, which involves fusing special alloys of neodymium with additional metals and then forming and heat treating. Their powerful magnetic strength comes from the specific production technology and chemical composition.
In terms of properties in different environments, neodymium magnets are susceptible to corrosion, especially in conditions of high humidity. Therefore, they are often covered with thin coatings, such as gold, to shield them from external factors and extend their lifespan. Temperatures exceeding 130°C can cause a reduction of their magnetic strength, although there are specific types of neodymium magnets that can withstand temperatures up to 230°C.
As for dangers, it is important to avoid using neodymium magnets in acidic environments, basic environments, organic or solvent environments, unless they are properly protected. Additionally, their use is not recommended in water, oil, or in an environment containing hydrogen, as they may forfeit their magnetic strength.

Advantages and disadvantages of neodymium magnets NdFeB.

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

They do not lose power over time. After 10 years, their power decreases by only ~1% (theoretically),
They protect against demagnetization caused by external magnetic sources extremely well,
In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
They exhibit extremely high magnetic induction on the surface of the magnet,
By using an appropriate combination of materials, they can achieve significant thermal resistance, allowing them to operate at temperatures up to 230°C and above...
Thanks to the flexibility in shaping or 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 advanced technologically fields – are utilized in computer drives, electric drive mechanisms, medical apparatus or various technologically advanced devices.

Disadvantages of neodymium magnets:

They are prone to breaking as they are 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,
They lose power at high temperatures. Most neodymium magnets experience permanent loss of strength when heated above 80°C (depending on the shape 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 - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
Potential hazard to health from tiny fragments of magnets pose a threat, in case of ingestion, which becomes significant in the aspect of protecting young children. Furthermore, tiny parts of these devices have the potential to be problematic in medical diagnosis after entering the body.

Handle with Care: Neodymium Magnets

Neodymium magnets should not be around children.

Neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Avoid contact with neodymium magnets if you have a nickel 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.

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

Familiarize yourself with our information to properly handle these magnets and avoid significant swellings to your body and prevent disruption to the magnets.

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, etc. devices. They can also destroy videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

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.

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 produce strong magnetic fields that can interfere 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.

Neodymium magnets are incredibly fragile, they easily crack as well as can become damaged.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. They are coated with a shiny nickel plating similar to steel, but they are not as hard. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.

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

Never bring neodymium magnets close to a phone and GPS.

Neodymium magnets are a source of intense magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

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

MW 18.9x10 / N38 - neodymium magnet

cylindrical magnet

Specification: cylindrical magnet 18.9x10 / N38 → diametrical

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B

Recommended articles for purchase

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ring magnet 8x6/3.5x3 / N38 ↑ axial

magnetic separator with handle 25x175 / N52

Advantages and disadvantages of neodymium magnets NdFeB.

MW 18.9x10 / N38 - neodymium magnet

cylindrical magnet

Specification: cylindrical magnet 18.9x10 / N38 → diametrical

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd2Fe14B

Recommended articles for purchase

magnetic separator 25x200 [2xM8] / N42

search holder 94x28 [3xM10] GW F300 GOLD Lina / N38

ring magnet 8x6/3.5x3 / N38 ↑ axial

magnetic separator with handle 25x175 / N52

Advantages and disadvantages of neodymium magnets NdFeB.

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B