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neodymium magnets

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Magnet for water searching F300 GOLD

Where to purchase very strong neodymium magnet? Magnetic holders in solid and airtight steel enclosure are ideally suited for use in difficult climate conditions, including snow and rain check...

magnets with holders

Holders with magnets can be used to improve production processes, underwater discoveries, or locating meteorites from gold more information...

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UMH 60x15x69 [M8] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310431

GTIN: 5906301814603

5

Diameter Ø [±0,1 mm]

60 mm

Height [±0,1 mm]

69 mm

Height [±0,1 mm]

15 mm

Weight

300 g

Magnetization Direction

↑ axial

Load capacity

112 kg / 1098.34 N

Coating

[NiCuNi] nickel

143.91 with VAT / pcs + price for transport

117.00 ZŁ net + 23% VAT / pcs

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UMH 60x15x69 [M8] / N38 - magnetic holder with hook

Specification/characteristics UMH 60x15x69 [M8] / N38 - magnetic holder with hook
properties
values
Cat. no.
310431
GTIN
5906301814603
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
60 mm [±0,1 mm]
Height
69 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
300 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
112 kg / 1098.34 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.

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

  • They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They show exceptional resistance to demagnetization from external field exposure,
  • By applying a shiny layer of nickel, the element gains a sleek look,
  • They have extremely strong magnetic induction on the surface of the magnet,
  • They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
  • The ability for precise shaping or adjustment to specific needs – neodymium magnets can be manufactured in many forms and dimensions, which amplifies their functionality across industries,
  • Wide application in cutting-edge sectors – they serve a purpose in hard drives, rotating machines, diagnostic apparatus along with sophisticated instruments,
  • Compactness – despite their small size, they provide high effectiveness, making them ideal for precision applications

Disadvantages of magnetic elements:

  • They are prone to breaking when subjected to a powerful impact. If the magnets are exposed to shocks, it is advisable to use in a steel housing. The steel housing, in the form of a holder, protects the magnet from damage and reinforces its overall strength,
  • They lose field intensity at increased temperatures. Most neodymium magnets experience permanent reduction in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Due to corrosion risk in humid conditions, it is advisable to use sealed magnets made of plastic for outdoor use,
  • Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing threads directly in the magnet,
  • Health risk due to small fragments may arise, especially if swallowed, which is notable in the protection of children. Furthermore, tiny components from these products can disrupt scanning when ingested,
  • Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Safety Precautions

Neodymium magnets can become demagnetized at high temperatures.

Although magnets are generally resilient, their ability to maintain their magnetic potency can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

Magnets made of neodymium are highly susceptible to damage, resulting in their cracking.

Neodymium magnets are highly delicate, and by joining them in an uncontrolled manner, they will break. Neodymium magnets 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 are not recommended for people with pacemakers.

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.

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

Neodymium magnets jump and touch each other mutually within a radius of several to around 10 cm from each other.

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

The strong magnetic field generated by neodymium magnets 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. Remember not to place neodymium magnets close to these electronic devices.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Under no circumstances should neodymium magnets be brought close to 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.

 Maintain neodymium magnets away from children.

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 the most powerful, most remarkable magnets on the planet, and the surprising force between them can surprise you at first.

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.

Warning!

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

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