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MW 9.5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010107

GTIN: 5906301811060

Diameter Ø [±0,1 mm]

9.5 mm

Height [±0,1 mm]

1 mm

Weight

0.53 g

Magnetization Direction

↑ axial

Load capacity

0.53 kg / 5.2 N

Magnetic Induction

127.68 mT

Coating

[NiCuNi] nickel

0.26 ZŁ with VAT / pcs + price for transport

0.21 ZŁ net + 23% VAT / pcs

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MW 9.5x1 / N38 - cylindrical magnet

Specification/characteristics MW 9.5x1 / N38 - cylindrical magnet

properties

values

Cat. no.

010107

GTIN

5906301811060

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

9.5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.53 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

0.53 kg / 5.2 N

Magnetic Induction ~ ?

127.68 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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Cylindrical Neodymium Magnets i.e. MW 9.5x1 / N38 are magnets made of neodymium in a cylindrical shape. They are valued for their very strong magnetic properties, which exceed ordinary ferrite magnets. Because of their strength, they are frequently used in products that need strong adhesion. The typical temperature resistance of these magnets is 80°C, but for cylindrical magnets, this temperature rises with their height. Additionally, various special coatings, such as nickel, gold, or chrome, are frequently applied to the surface of neodymium magnets to increase their durability to corrosion. The cylindrical shape is also one of the most popular among neodymium magnets. The magnet named MW 9.5x1 / N38 with a magnetic force 0.53 kg weighs only 0.53 grams.

Cylindrical neodymium magnets, also known as Nd₂Fe₁₄B, represent 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 a series of processes, 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, although neodymium is part of the strongest magnets, they are susceptible to corrosion in humid environments. For this reason, 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 many 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 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, situated in Ożarów Mazowiecki, the address can be found directly in the contact tab. It is recommended to visit the website for the latest information and promotions, and before visiting, we recommend calling.

Although, cylindrical neodymium magnets are very practical in various applications, they can also pose certain risk. Because of their strong magnetic power, they can pull metallic objects with great force, which can lead to damaging skin as well as other surfaces, especially be careful with fingers. Do 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. Furthermore, 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 handy, they should be handled with due caution.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are at this time the strong magnets on the market. They are produced through a complicated sintering process, which involves melting special alloys of neodymium with other metals and then shaping and heat treating. Their unmatched magnetic strength comes from the exceptional production technology and chemical structure.
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 epoxy, to shield them from external factors and extend their lifespan. Temperatures exceeding 130°C can result in a deterioration of their magnetic properties, although there are particular types of neodymium magnets that can tolerate temperatures up to 230°C.
As for dangers, 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 water, oil, or in an atmosphere containing hydrogen, as they may forfeit their magnetic strength.

A neodymium magnet of class N52 and N50 is a powerful and highly strong magnetic piece in the form of a cylinder, that offers strong holding power and universal application. Very good price, availability, durability and universal usability.

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from their strong magnetism, neodymium magnets have these key benefits:

They have unchanged lifting capacity, and over more than ten years their performance decreases symbolically – ~1% (in testing),
They protect against demagnetization induced by external magnetic fields effectively,
The use of a polished gold surface provides a smooth finish,
They exhibit extremely high levels of magnetic induction near the outer area of the magnet,
These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to build),
Thanks to the flexibility in shaping and the capability to adapt to specific requirements, neodymium magnets can be created in diverse shapes and sizes, which expands their functional possibilities,
Wide application in cutting-edge sectors – they serve a purpose in computer drives, electric drives, clinical machines or even high-tech tools,
Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in tiny dimensions, which makes them ideal in small systems

Disadvantages of magnetic elements:

They may fracture when subjected to a heavy impact. If the magnets are exposed to mechanical hits, they should be placed in a protective case. The steel housing, in the form of a holder, protects the magnet from cracks and additionally enhances its overall strength,
Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible field weakening (influenced by the magnet’s structure). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
Magnets exposed to wet conditions can rust. Therefore, for outdoor applications, we advise waterproof types made of non-metallic composites,
The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is not feasible,
Potential hazard related to magnet particles may arise, especially if swallowed, which is significant in the context of child safety. Furthermore, small elements from these magnets can interfere with diagnostics once in the system,
Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Exercise Caution with Neodymium Magnets

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Keep neodymium magnets away from children.

Remember that neodymium magnets are not toys. Do not allow children to play with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing severe injuries, and even death.

Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.

Magnetic fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar 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 demagnetize at high temperatures.

Despite the fact that magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

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.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can shock you.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

Do not bring neodymium magnets close to GPS and smartphones.

Strong fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets are extremely fragile, they easily fall apart and can become damaged.

Magnets made of neodymium are extremely delicate, and by joining them in an uncontrolled manner, they will break. 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.

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. 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.

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.

Magnets will attract each other within a distance of several to about 10 cm from each other. Remember not to insert fingers between magnets or in their path when attract. Magnets, depending on their size, can even cut off a finger or there can be a severe pressure or even a fracture.

Caution!

To raise awareness of why neodymium magnets are so dangerous, read the article titled How dangerous are powerful neodymium magnets?.