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MW 38x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010061

GTIN: 5906301810605

Diameter Ø [±0,1 mm]

38 mm

Height [±0,1 mm]

15 mm

Weight

127.59 g

Magnetization Direction

↑ axial

Load capacity

31.52 kg / 309.11 N

Magnetic Induction

384.07 mT

Coating

[NiCuNi] nickel

70.00 ZŁ with VAT / pcs + price for transport

56.91 ZŁ net + 23% VAT / pcs

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MW 38x15 / N38 - cylindrical magnet

Specification/characteristics MW 38x15 / N38 - cylindrical magnet

properties

values

Cat. no.

010061

GTIN

5906301810605

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

38 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

127.59 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

31.52 kg / 309.11 N

Magnetic Induction ~ ?

384.07 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 min. MW 38x15 / N38 are magnets made of neodymium in a cylinder form. They are known for their very strong magnetic properties, which exceed traditional iron magnets. Thanks to their strength, they are often employed in devices that need powerful holding. The standard temperature resistance of these magnets is 80 degrees C, but for cylindrical magnets, this temperature rises 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 increase their resistance to corrosion. The shape of a cylinder is also very popular among neodymium magnets. The magnet designated MW 38x15 / N38 with a magnetic force 31.52 kg has a weight of only 127.59 grams.

Cylindrical neodymium magnets, also known as Nd₂Fe₁₄B, represent the strongest known material for magnet production. The technology of their production requires a specialized approach and includes sintering special neodymium alloys 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 prone to corrosion in humid environments. Therefore, they are coated with a thin layer of silver 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. Therefore, 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 in solvents, 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 guaranteed.

Regarding the purchase of cylindrical neodymium magnets, many companies offer such products. One of the suggested suppliers is our company Dhit, situated in Ożarów Mazowiecki, the address is available directly in the contact tab. It is recommended to check the site for the latest information and offers, and before visiting, we recommend calling.

Although, cylindrical neodymium magnets are very useful in many applications, they can also pose certain risk. Due to their strong magnetic power, they can attract metallic objects with significant force, which can lead to damaging skin and other surfaces, especially hands. One should not use neodymium magnets near electronic devices or data storage devices, such as credit cards, as they can damage these devices in terms of magnetic recording. Furthermore, 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 very useful, one should handle them with due caution.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are presently the strong magnets on the market. They are produced through a advanced sintering process, which involves melting specific alloys of neodymium with other metals and then forming and thermal processing. Their unmatched magnetic strength comes from the specific production technology and chemical structure.
In terms of properties in different environments, neodymium magnets are susceptible to corrosion, especially in humid conditions. Therefore, they are often covered with thin coatings, such as epoxy, to shield them from environmental factors and extend their lifespan. Temperatures exceeding 130°C can cause a loss of their magnetic properties, although there are specific types of neodymium magnets that can withstand temperatures up to 230°C.
As for potential dangers, it is important to avoid using neodymium magnets in acidic environments, basic environments, organic or solvent environments, unless they are insulated. Additionally, their use is not recommended in water, oil, or in an atmosphere containing hydrogen, as they may forfeit their magnetic properties.

A neodymium magnet N50 and N52 is a strong and extremely powerful magnetic product with the shape of a cylinder, that offers high force and versatile application. Attractive price, availability, ruggedness and broad range of uses.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their exceptional pulling force, neodymium magnets offer the following advantages:

They retain their full power for nearly ten years – the loss is just ~1% (in theory),
They protect against demagnetization induced by ambient magnetic influence effectively,
The use of a decorative silver surface provides a refined finish,
The outer field strength of the magnet shows remarkable magnetic properties,
Thanks to their exceptional temperature resistance, they can operate (depending on the geometry) even at temperatures up to 230°C or more,
The ability for precise shaping and adaptation to individual needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which extends the scope of their use cases,
Significant impact in cutting-edge sectors – they are used in computer drives, rotating machines, diagnostic apparatus and sophisticated instruments,
Thanks to their concentrated strength, small magnets offer high magnetic performance, with minimal size,

Disadvantages of magnetic elements:

They can break when subjected to a strong impact. If the magnets are exposed to shocks, it is advisable to use in a steel housing. The steel housing, in the form of a holder, protects the magnet from fracture , and at the same time reinforces its overall resistance,
Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible power drop (influenced by the magnet’s dimensions). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
Magnets exposed to damp air can rust. Therefore, for outdoor applications, we advise waterproof types made of non-metallic composites,
Using a cover – such as a magnetic holder – is advised due to the limitations in manufacturing holes directly in the magnet,
Potential hazard due to small fragments may arise, if ingested accidentally, which is important in the family environments. Moreover, minuscule fragments from these magnets can hinder health screening when ingested,
High unit cost – neodymium magnets are pricier than other types of magnets (e.g., ferrite), which can restrict large-scale applications

Handle with Care: Neodymium Magnets

You should maintain neodymium magnets at a safe distance from the wallet, computer, and TV.

Neodymium magnets generate 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 away from these electronic devices.

Neodymium magnetic are extremely fragile, leading to their cracking.

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 collision between the magnets, small metal fragments can be dispersed in different directions.

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.

Never bring neodymium magnets close to a phone and GPS.

Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets are the most powerful magnets ever created, and their strength can surprise 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 magnets are not recommended for 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.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

Neodymium magnets will bounce and contact together within a radius of several to almost 10 cm from each other.

Neodymium magnets should not be around 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.

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

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.

Exercise caution!

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