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neodymium magnets

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UI 17.5x5 [C310] / N38 - badge holder

badge holder

Catalog no 150261

GTIN: 5906301813583

5

Diameter Ø [±0,1 mm]

17.5 mm

Height [±0,1 mm]

5 mm

Weight

0.11 g

Load capacity

0.75 kg / 7.35 N

1.32 with VAT / pcs + price for transport

1.07 ZŁ net + 23% VAT / pcs

bulk discounts:

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1.12 ZŁ

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UI 17.5x5 [C310] / N38 - badge holder

Specification/characteristics UI 17.5x5 [C310] / N38 - badge holder
properties
values
Cat. no.
150261
GTIN
5906301813583
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
17.5 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
0.11 g [±0,1 mm]
Load capacity ~ ?
0.75 kg / 7.35 N
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
T
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
Hv
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

Shopping tips

The most preferred holders for ID badges include options such as this UI 17.5x5 [C310] / N38. They ensure resilience and an aesthetic appearance. Magnetic mounts are valued as ideal because they are gentle on clothing, are simple to mount, and provide secure badge attachment. A model utilizing powerful neodymium magnets and high-quality adhesive tapes, such as 3M tape, is especially suggested.
No!, magnetic holders are contraindicated for individuals with implanted cardiac devices, as the strong magnetic field can affect their functioning. In such cases, it is recommended to use clip-on holders, and we offer two such types in our range.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from their superior holding force, neodymium magnets have these key benefits:

  • They do not lose their strength approximately 10 years – the reduction of strength is only ~1% (theoretically),
  • They remain magnetized despite exposure to magnetic noise,
  • By applying a bright layer of gold, the element gains a sleek look,
  • Magnetic induction on the surface of these magnets is very strong,
  • Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C or more,
  • With the option for tailored forming and precise design, these magnets can be produced in various shapes and sizes, greatly improving design adaptation,
  • Wide application in cutting-edge sectors – they find application in data storage devices, electric motors, diagnostic apparatus and technologically developed systems,
  • Thanks to their concentrated strength, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of rare earth magnets:

  • They may fracture when subjected to a powerful impact. If the magnets are exposed to shocks, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from damage , and at the same time increases its overall resistance,
  • High temperatures may significantly reduce the holding force 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,
  • Due to corrosion risk in humid conditions, it is common to use sealed magnets made of synthetic coating for outdoor use,
  • Limited ability to create precision features in the magnet – the use of a mechanical support is recommended,
  • Safety concern related to magnet particles may arise, when consumed by mistake, which is significant in the protection of children. Moreover, tiny components from these magnets may hinder health screening if inside the body,
  • In cases of mass production, neodymium magnet cost may not be economically viable,

Caution with Neodymium Magnets

 It is important to maintain neodymium magnets out of reach from 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.

Neodymium magnets are among the most powerful magnets on Earth. The surprising force they generate between each other can shock you.

Familiarize yourself with our information to properly handle these magnets and avoid significant swellings to your body and prevent damage to the 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.

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

Neodymium magnets generate strong magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also damage devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Keep neodymium magnets as far away as possible from GPS and smartphones.

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 people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they 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.

Neodymium magnets are extremely delicate, they easily crack and can crumble.

Neodymium magnets are highly delicate, and by joining them in an uncontrolled manner, they will crumble. 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 primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.

In the case of placing a finger in the path of a neodymium magnet, in such a case, a cut or a fracture may occur.

The magnet is coated with nickel. Therefore, exercise caution if you have an 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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnets can become demagnetized 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.

Safety rules!

In order for you to know how powerful neodymium magnets are and why they are so dangerous, see the article - Dangerous powerful neodymium magnets.

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tel: +48 888 99 98 98