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MPL 40x15x5x2[7/3.5] / N38 - neodymium magnet

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MPL 40x15x5x2[7/3.5] / N38 - neodymium magnet

lamellar magnet

catalog number 020154

GTIN: 5906301811602

5.0

length

40 mm [±0,1 mm]

width

15 mm [±0,1 mm]

height

5 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

9.67 kg / 94.83 N

magnetic induction ~

249.11 mT / 2,491 Gs

max. temperature

≤ 80 °C

15.07 PLN gross price (including VAT) / pcs +

12.25 PLN net price + 23% VAT / pcs

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Want to talk about magnets?

Give us a call tel: +48 22 499 98 98 or contact us through form on the contact page. You can check the mass as well as the appearance of neodymium magnets in our magnetic calculator magnetic calculator

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

Specification: lamellar magnet 40x15x5x2[7/3.5] / N38 ↑ axial

Characteristics: lamellar magnet 40x15x5x2[7/3.5] / N38 ↑ axial

Properties

Values

catalog number

020154

GTIN

5906301811602

production / distribution

Dhit sp. z o.o.

country of origin

Poland / China / Germany

customs code

85059029

length

40 mm [±0,1 mm]

width

15 mm [±0,1 mm]

height

5 mm [±0,1 mm]

magnetizing direction ?

↑ axial

capacity ~ ?

9.67 kg / 94.83 N

magnetic induction ~ ?

249.11 mT / 2,491 Gs

max. temperature ?

≤ 80 °C

coating type ?

[NiCuNi] nickel

weight

22.50 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

Neodymium disc magnets provide a range of advantages in relation to other magnet shapes, which make them the ideal choice for numerous projects:
Contact Surface: Thanks to their flat shape, disc magnets provide a larger contact surface with other elements, which can be beneficial in applications requiring a stronger magnetic connection.
Applications in Technology: The magnets are often used in different devices, such as sensors, stepper motors, or speakers, where a flat shape is crucial for their operation.
Mounting: This form's flat shape facilitates mounting, especially when it's necessary to adhere the magnet to a surface.
Design Flexibility: The flat shape of the magnets gives designers with greater flexibility in arranging them in devices, which can be more difficult with magnets of other shapes.
Stability: In certain applications, the flat base of a disc magnet may provide better stability, minimizing the risk of shifting or rotating. However, it's important to remember that the optimal shape of a magnet is dependent on the specific application and requirements. In certain cases, other shapes, like cylindrical or spherical, may be a better choice.

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from immense power, neodymium magnets have the following advantages:

They do not lose strength over time. After approximately 10 years, their strength decreases by only ~1% (theoretically),
They are highly resistant to demagnetization by external magnetic field,
In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
They possess very high magnetic induction on the surface of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the shape) even at temperatures up to 230°C and above...
The ability for precise shaping or customization to specific needs – neodymium magnets can be produced in a wide range of shapes and sizes, which expands the range of their possible uses.
Significant importance in the industry of new technologies – are used in hard drives, electric motors, medical equipment and other modern machines.

Disadvantages of neodymium magnets:

They can break when subjected to a strong impact. If the magnets are exposed to impacts, we recommend using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts and at the same time 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 form and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
Health risk associated with microscopic parts of magnets pose a threat, when accidentally ingested, which becomes significant in the context of children's health. Furthermore, small elements of these products can hinder the diagnostic process when they are in the body.

Precautions with Neodymium Magnets

Neodymium magnets can become demagnetized 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.

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 should not be near people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

Neodymium magnets produce 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 damage videos, televisions, CRT computer monitors. Do not forget to keep neodymium magnets at a safe distance from these electronic devices.

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

Magnets attract each other within a distance of several to around 10 cm from each other. Remember not to put fingers between magnets or in their path when they attract. Depending on how massive the neodymium magnets are, they can lead to a cut or a fracture.

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.

The magnet is coated with nickel - be careful 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 are especially delicate, which leads to their breakage.

Neodymium magnetic are fragile as well as will shatter if allowed to collide with each other, even from a distance of a few centimeters. 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 are among the strongest magnets on Earth. The surprising force they generate between each other can shock 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.

Magnets are not toys, children should not play with them.

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.

Please read the article - What danger lies in neodymium magnets? You will learn how to handle them properly.

MPL 40x15x5x2[7/3.5] / N38 - neodymium magnet

lamellar magnet

Specification: lamellar magnet 40x15x5x2[7/3.5] / N38 ↑ axial

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B

Recommended articles for purchase

badge holder 40x12x7 [CA]

ring magnet 62x42x25 / N38 ↑ axial

cylindrical magnet 3x2 / N38 ↑ axial

cylindrical magnet 33x10 / N38 ↑ axial

Advantages as well as disadvantages of neodymium magnets NdFeB.

MPL 40x15x5x2[7/3.5] / N38 - neodymium magnet

lamellar magnet

Specification: lamellar magnet 40x15x5x2[7/3.5] / N38 ↑ axial

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd2Fe14B

Recommended articles for purchase

badge holder 40x12x7 [CA]

ring magnet 62x42x25 / N38 ↑ axial

cylindrical magnet 3x2 / N38 ↑ axial

cylindrical magnet 33x10 / N38 ↑ axial

Advantages as well as disadvantages of neodymium magnets NdFeB.

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B