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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:

Need more?

price from 1 pcs
1.07 ZŁ
1.32 ZŁ
price from 250 pcs
1.01 ZŁ
1.24 ZŁ
price from 500 pcs
0.96 ZŁ
1.18 ZŁ
price from 1000 pcs
0.91 ZŁ
1.12 ZŁ

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Contact us by phone +48 22 499 98 98 otherwise send us a note through form the contact page.
Lifting power along with form of neodymium magnets can be tested using our magnetic mass calculator.

Same-day shipping for orders placed before 14:00.

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 recommended holders for ID badges include options such as this UI 17.5x5 [C310] / N38. They guarantee resilience and an aesthetic appearance. Magnetic mounts are valued as ideal because they do not damage clothing, are user-friendly, and provide secure badge attachment. A model utilizing potent neodymium magnets and high-quality adhesive tapes, such as 3M tape, is particularly suggested.
No!, magnetic holders should not be used for individuals with heart implants, as the strong magnetic field can affect their functioning. For such individuals, it is advised to use non-magnetic holders, and we offer two such types in our range.

Advantages as well as disadvantages of neodymium magnets NdFeB.

Besides their magnetic performance, neodymium magnets are valued for these benefits:

  • They do not lose their even over nearly ten years – the reduction of power is only ~1% (based on measurements),
  • They are very resistant to demagnetization caused by external magnetic sources,
  • Thanks to the shiny finish and silver coating, they have an elegant appearance,
  • The outer field strength of the magnet shows elevated magnetic properties,
  • Neodymium magnets are known for exceptionally 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 customized forming and targeted design, these magnets can be produced in multiple shapes and sizes, greatly improving design adaptation,
  • Wide application in new technology industries – they find application in computer drives, electromechanical systems, medical equipment and sophisticated instruments,
  • Thanks to their power density, small magnets offer high magnetic performance, in miniature format,

Disadvantages of NdFeB magnets:

  • They may fracture when subjected to a strong impact. If the magnets are exposed to mechanical hits, they should be placed in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from damage and additionally strengthens its overall durability,
  • Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (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 damp air can degrade. Therefore, for outdoor applications, we recommend waterproof types made of rubber,
  • The use of a protective casing or external holder is recommended, since machining internal cuts in neodymium magnets is not feasible,
  • Potential hazard from tiny pieces may arise, if ingested accidentally, which is significant in the health of young users. Furthermore, tiny components from these magnets may complicate medical imaging if inside the body,
  • In cases of mass production, neodymium magnet cost is a challenge,

Precautions

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.

Neodymium magnets can become demagnetized at high temperatures.

Even though 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.

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

The strong magnetic field generated by neodymium magnets can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also damage devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets at a safe distance from these electronic devices.

Neodymium magnets are especially fragile, which leads to damage.

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

  Do not give neodymium magnets to children.

Remember that 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.

Avoid bringing neodymium magnets close to a phone or GPS.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

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.

If you have a finger between or alternatively on the path of attracting magnets, there may be a severe 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.

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.

Neodymium magnets are the strongest magnets ever invented. Their power can shock you.

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

Pay attention!

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

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98