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neodymium magnets

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Magnet for searching F200 GOLD

Where to buy very strong neodymium magnet? Magnet holders in airtight, solid steel enclosure are ideally suited for use in variable and difficult climate conditions, including during rain and snow see...

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Holders with magnets can be used to enhance production, exploring underwater areas, or locating meteors made of metal see...

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UMH 32x8x46 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310427

GTIN: 5906301814566

0

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

46 mm

Height [±0,1 mm]

8 mm

Weight

53 g

Magnetization Direction

↑ axial

Load capacity

38 kg / 372.65 N

Coating

[NiCuNi] nickel

22.14 with VAT / pcs + price for transport

18.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 45 pcs
15.84 ZŁ
19.48 ZŁ

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UMH 32x8x46 [M6] / N38 - magnetic holder with hook

Specification/characteristics UMH 32x8x46 [M6] / N38 - magnetic holder with hook
properties
values
Cat. no.
310427
GTIN
5906301814566
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
32 mm [±0,1 mm]
Height
46 mm [±0,1 mm]
Height
8 mm [±0,1 mm]
Weight
53 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
38 kg / 372.65 N
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
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

Advantages and disadvantages of neodymium magnets NdFeB.

Besides their high retention, neodymium magnets are valued for these benefits:

  • Their strength remains stable, and after approximately ten years, it drops only by ~1% (theoretically),
  • They show superior resistance to demagnetization from external field exposure,
  • In other words, due to the glossy gold coating, the magnet obtains an stylish appearance,
  • They have extremely strong magnetic induction on the surface of the magnet,
  • These magnets tolerate elevated temperatures, often exceeding 230°C, when properly designed (in relation to form),
  • The ability for custom shaping as well as adaptation to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which extends the scope of their use cases,
  • Significant impact in new technology industries – they find application in data storage devices, electric motors, diagnostic apparatus along with high-tech tools,
  • Thanks to their power density, small magnets offer high magnetic performance, with minimal size,

Disadvantages of rare earth magnets:

  • They may fracture when subjected to a powerful impact. If the magnets are exposed to physical collisions, 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 durability,
  • They lose strength at increased temperatures. Most neodymium magnets experience permanent decline in strength when heated above 80°C (depending on the form and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Magnets exposed to wet conditions can oxidize. Therefore, for outdoor applications, we advise waterproof types made of plastic,
  • The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is restricted,
  • Health risk from tiny pieces may arise, in case of ingestion, which is significant in the context of child safety. Additionally, tiny components from these magnets have the potential to hinder health screening once in the system,
  • High unit cost – neodymium magnets are pricier than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Precautions

  Do not give neodymium magnets to youngest children.

Not all neodymium magnets are toys, so do not let children play with them. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Magnets made of neodymium are highly susceptible to damage, leading to breaking.

Neodymium magnets are characterized by considerable fragility. 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.

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 jump and clash together within a radius of several to almost 10 cm from each other.

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 are not recommended for 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.

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

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.

Neodymium magnets are the most powerful magnets ever invented. Their strength can shock you.

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional damage to the magnets.

Neodymium magnets can become demagnetized at high temperatures.

Despite the fact that magnets have been observed 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.

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

Neodymium magnets generate strong magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other 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.

The magnet coating is made of nickel, so be cautious 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.

Warning!

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

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tel: +48 888 99 98 98