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MP 32x16x3 / N38 - ring magnet

ring magnet

Catalog no 030198

GTIN: 5906301812159

Diameter [±0,1 mm]

32 mm

internal diameter Ø [±0,1 mm]

16 mm

Height [±0,1 mm]

3 mm

Weight

11.31 g

Magnetization Direction

↑ axial

Load capacity

2.74 kg / 26.87 N

Magnetic Induction

103.36 mT

Coating

[NiCuNi] nickel

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MP 32x16x3 / N38 - ring magnet

Specification/characteristics MP 32x16x3 / N38 - ring magnet

properties

values

Cat. no.

030198

GTIN

5906301812159

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter

32 mm [±0,1 mm]

internal diameter Ø

16 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

11.31 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

2.74 kg / 26.87 N

Magnetic Induction ~ ?

103.36 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 magnets MP 32x16x3 / N38 in a ring-shaped form are regularly used in various industries due to their specific properties. Thanks to a powerful magnetic field of 2.74 kg, which can be described as strength, they are extremely useful in applications that require high magnetic power in a relatively small area. Applications of MP 32x16x3 / N38 magnets include electrical mechanisms, generating systems, sound devices, and numerous other devices that use magnets for generating motion or energy storage. Despite their powerful strength, they have a comparatively low weight of 11.31 grams, which makes them more practical compared to heavier alternatives.

Ring magnets work due to their atomic structure. Their properties arise from a controlled production process, including sintering and magnetization, which allows for the creation of a concentrated magnetic field in a specific direction. This makes them perfect for devices such as stepper motors or industrial robots. Moreover, their resistance to high temperatures and demagnetization makes them indispensable in industry.

Ring magnets have a wide range of applications in many industries, such as electronics, e.g., in the production of speakers or electric motors, the automotive industry, e.g., in the construction of electric motors, and medicine, where they are used in precision diagnostic devices. Thanks to their temperature resistance and precision makes them ideal for technologically advanced applications.

Their uniqueness comes from extraordinary pulling power, resistance to high temperatures, precise control of the magnetic field. Their unique ring form allows for effective use in devices such as motors or speakers. Additionally, these magnets are significantly stronger and more versatile than ferrite counterparts, making them an ideal choice in the automotive, electronics, and medical industries.

Thanks to their resistance to high temperatures, ring magnets operate reliably even in tough conditions. They do not lose their magnetic properties, until the Curie temperature is exceeded, which for neodymium magnets is around 80°C. Compared to other types of magnets, ring magnets show greater resistance to demagnetization. Because of this, they are ideal for applications in the automotive industry, robotics, and devices requiring operation in changing or extreme environmental conditions.

A neodymium ring magnet N52 and N50 is a strong and powerful magnetic product with the shape of a ring, providing high force and universal applicability. Attractive price, availability, resistance and broad range of uses.

Advantages and disadvantages of neodymium magnets NdFeB.

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

They do not lose their even during around 10 years – the reduction of strength is only ~1% (based on measurements),
They remain magnetized despite exposure to strong external fields,
In other words, due to the metallic silver coating, the magnet obtains an stylish appearance,
They exhibit elevated levels of magnetic induction near the outer area of the magnet,
Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
With the option for tailored forming and targeted design, these magnets can be produced in multiple shapes and sizes, greatly improving design adaptation,
Key role in modern technologies – they serve a purpose in data storage devices, rotating machines, diagnostic apparatus as well as high-tech tools,
Relatively small size with high magnetic force – neodymium magnets offer strong power in small dimensions, which allows for use in compact constructions

Disadvantages of NdFeB magnets:

They can break when subjected to a heavy impact. If the magnets are exposed to shocks, it is advisable to use in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage while also reinforces 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,
Due to corrosion risk in humid conditions, it is common to use sealed magnets made of protective material for outdoor use,
Limited ability to create precision features in the magnet – the use of a external casing is recommended,
Safety concern related to magnet particles may arise, when consumed by mistake, which is notable in the family environments. Moreover, small elements from these devices may interfere with diagnostics after being swallowed,
In cases of mass production, neodymium magnet cost is a challenge,

Handle with Care: Neodymium Magnets

People with pacemakers are advised to avoid neodymium magnets.

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.

Avoid bringing neodymium magnets close to a phone or GPS.

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.

Keep neodymium magnets away from TV, wallet, and computer HDD.

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. You should especially avoid placing neodymium magnets near electronic devices.

Neodymium magnets are particularly fragile, which leads to their breakage.

Neodymium magnets are characterized by significant fragility. Magnets made of neodymium are made of metal and coated with a shiny nickel, but they are not as durable 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 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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times more powerful, and their power 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.

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.

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 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.

Magnets will attract each other within a distance of several to around 10 cm from each other. Don't put your fingers in the path of magnet attraction, because a major injury may occur. Magnets, depending on their size, can even cut off a finger or there can be a serious pressure or a fracture.

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

Remember that 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.

Pay attention!

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