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MW 5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010082

GTIN: 5906301810810

Diameter Ø [±0,1 mm]

5 mm

Height [±0,1 mm]

1 mm

Weight

0.15 g

Magnetization Direction

↑ axial

Load capacity

0.28 kg / 2.75 N

Magnetic Induction

229.95 mT

Coating

[NiCuNi] nickel

0.15 ZŁ with VAT / pcs + price for transport

0.12 ZŁ net + 23% VAT / pcs

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MW 5x1 / N38 - cylindrical magnet

Specification/characteristics MW 5x1 / N38 - cylindrical magnet

properties

values

Cat. no.

010082

GTIN

5906301810810

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.15 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

0.28 kg / 2.75 N

Magnetic Induction ~ ?

229.95 mT

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

coercivity bHc ?

860-915

kA/m

coercivity bHc ?

10.8-11.5

kOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

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

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Neodymium Cylindrical Magnets i.e. MW 5x1 / N38 are magnets made of neodymium in a cylindrical shape. They are valued for their extremely powerful magnetic properties, which exceed ordinary ferrite magnets. Thanks to their strength, they are frequently used in products that require strong adhesion. The typical temperature resistance of such magnets is 80 degrees C, but for magnets in a cylindrical form, this temperature increases with the growth of the magnet. Additionally, various special coatings, such as nickel, gold, or chrome, are often applied to the surface of neodymium magnets to enhance their resistance to corrosion. The shape of a cylinder is as well one of the most popular among neodymium magnets. The magnet with the designation MW 5x1 / N38 with a magnetic strength 0.28 kg has a weight of only 0.15 grams.

Cylindrical neodymium magnets, also known as Nd₂Fe₁₄B, represent the strongest known material for magnet production. Their production process requires a specialized approach and includes melting special neodymium alloys with other metals such as iron and boron. After appropriate processing, such as heat and mechanical treatment, the magnets are made available for use in many applications, such as electric motors, audio-video equipment, and in the automotive and aerospace industries.
Moreover, even though neodymium is part of the strongest magnets, they are susceptible to corrosion in humid environments. Therefore, they are coated with a coating of epoxy 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. They should not be used in acidic, basic, organic environments or where solvents are present, as well as in water or oil. Additionally, they can damage data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not guaranteed.

In terms of purchasing of cylindrical neodymium magnets, several enterprises offer such products. One of the suggested suppliers is our company Dhit, located in Ożarów Mazowiecki, the address is available directly in the contact tab. It's always worth check the site for the current information and promotions, and before visiting, we recommend calling.

Although, cylindrical neodymium magnets are very practical in many applications, they can also pose certain risk. Because of their strong magnetic power, they can attract metallic objects with significant force, which can lead to damaging skin and other surfaces, especially fingers. Do not use neodymium magnets near equipment or data storage devices, such as credit cards, as they can damage these devices in terms of magnetic recording. Moreover, neodymium magnets are prone to corrosion in humid environments, therefore they are coated with a thin e.g., nickel layer. In short, although they are very useful, they should be handled with due caution.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are currently the strongest available magnets on the market. They are produced through a advanced sintering process, which involves fusing specific alloys of neodymium with other metals and then shaping and heat treating. Their unmatched magnetic strength comes from the unique production technology and chemical composition.
In terms of properties in different environments, neodymium magnets are sensitive to corrosion, especially in humid conditions. Therefore, they are often coated with coatings, such as epoxy, to protect them from environmental factors and extend their lifespan. High temperatures exceeding 130°C can cause a deterioration of their magnetic strength, although there are particular types of neodymium magnets that can tolerate temperatures up to 230°C.
As for risks, it is important to avoid using neodymium magnets in acidic conditions, basic conditions, organic or solvent environments, unless they are properly protected. Additionally, their use is not recommended in wet conditions, oil, or in an atmosphere containing hydrogen, as they may lose their magnetic properties.

A cylindrical neodymium magnet in classes N50 and N52 is a powerful and strong metal object designed as a cylinder, that provides strong holding power and universal application. Competitive price, availability, resistance and versatility.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years, the decline in efficiency is only ~1% (in laboratory conditions),
Their ability to resist magnetic interference from external fields is among the best,
By applying a shiny layer of nickel, the element gains a modern look,
They possess strong magnetic force measurable at the magnet’s surface,
These magnets tolerate elevated temperatures, often exceeding 230°C, when properly designed (in relation to profile),
Thanks to the possibility in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in different geometries, which expands their application range,
Significant impact in new technology industries – they find application in computer drives, electromechanical systems, medical equipment as well as other advanced devices,
Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in tiny dimensions, which allows for use in small systems

Disadvantages of NdFeB magnets:

They are fragile when subjected to a strong impact. If the magnets are exposed to physical collisions, they should be placed in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks while also increases its overall durability,
High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent deterioration in performance (depending on shape). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
They rust in a damp environment. If exposed to rain, we recommend using waterproof magnets, such as those made of non-metallic materials,
The use of a protective casing or external holder is recommended, since machining threads in neodymium magnets is difficult,
Possible threat related to magnet particles may arise, if ingested accidentally, which is important in the health of young users. Additionally, tiny components from these magnets might complicate medical imaging when ingested,
High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which may limit large-scale applications

Handle Neodymium Magnets Carefully

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. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

Neodymium magnetic are extremely fragile, leading to breaking.

Neodymium magnetic are fragile as well as will break if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. 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.

If you have a nickel allergy, avoid contact with neodymium magnets.

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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

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

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional damage to the magnets.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Strong magnetic fields emitted by neodymium magnets can destroy 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. Avoid placing neodymium magnets in close proximity to electronic devices.

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

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

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.

Do not bring neodymium magnets close to GPS and smartphones.

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.

Maintain neodymium magnets far from youngest children.

Neodymium magnets are not toys. Be cautious and make sure no child plays 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.

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.

Pay attention!

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