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neodymium magnets

We offer blue color magnetic Nd2Fe14B - our proposal. Practically all "magnets" in our store are available for immediate delivery (see the list). Check out the magnet pricing for more details check the magnet price list

Magnet for water searching F300 GOLD

Where to buy powerful neodymium magnet? Magnet holders in airtight and durable steel enclosure are ideally suited for use in variable and difficult weather, including during rain and snow check...

magnetic holders

Holders with magnets can be applied to facilitate manufacturing, exploring underwater areas, or searching for meteorites from gold check...

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AM ucho [M10] - magnetic accessories

magnetic accessories

Catalog no 080346

GTIN: 5906301812494

5

Weight

71.5 g

Load capacity

320 kg / 3138.13 N

7.38 with VAT / pcs + price for transport

6.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
6.00 ZŁ
7.38 ZŁ
price from 100 pcs
5.70 ZŁ
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price from 200 pcs
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6.64 ZŁ

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Parameters and form of neodymium magnets can be analyzed on our power calculator.

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AM ucho [M10] - magnetic accessories

Specification/characteristics AM ucho [M10] - magnetic accessories
properties
values
Cat. no.
080346
GTIN
5906301812494
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Weight
71.5 g [±0,1 mm]
Load capacity ~ ?
320 kg / 3138.13 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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

As an example, magnetic strips are used to tidy up areas, e.g., in kitchens to mount tools, or in workspaces to attach notes.

Advantages as well as disadvantages of neodymium magnets NdFeB.

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

  • They retain their full power for around ten years – the drop is just ~1% (in theory),
  • They are highly resistant to demagnetization caused by external magnetic fields,
  • The use of a mirror-like nickel surface provides a eye-catching finish,
  • The outer field strength of the magnet shows remarkable magnetic properties,
  • These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to form),
  • With the option for customized forming and personalized design, these magnets can be produced in various shapes and sizes, greatly improving application potential,
  • Important function in advanced technical fields – they are used in data storage devices, electric motors, medical equipment or even technologically developed systems,
  • Relatively small size with high magnetic force – neodymium magnets offer intense magnetic field in compact dimensions, which makes them ideal in miniature devices

Disadvantages of NdFeB magnets:

  • They can break when subjected to a powerful impact. If the magnets are exposed to mechanical hits, it is advisable to use in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage , and at the same time strengthens its overall strength,
  • Magnets lose power when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible field weakening (influenced by the magnet’s dimensions). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
  • Magnets exposed to moisture can oxidize. Therefore, for outdoor applications, we recommend waterproof types made of coated materials,
  • The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is risky,
  • Safety concern from tiny pieces may arise, in case of ingestion, which is significant in the family environments. Furthermore, miniature parts from these magnets may complicate medical imaging after being swallowed,
  • Higher purchase price is an important factor to consider compared to ceramic magnets, especially in budget-sensitive applications

Detachment force of the magnet in optimal conditionswhat contributes to it?

The given holding capacity of the magnet represents the highest holding force, measured in ideal conditions, namely:

  • using a steel plate with low carbon content, acting as a magnetic circuit closure
  • having a thickness of no less than 10 millimeters
  • with a refined outer layer
  • in conditions of no clearance
  • in a perpendicular direction of force
  • under standard ambient temperature

Lifting capacity in real conditions – factors

The lifting capacity of a magnet is influenced by in practice the following factors, ordered from most important to least significant:

  • Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) causes a drop in lifting force of up to 50%.
  • Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
  • Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
  • Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
  • Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
  • Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Moreover, even a small distance {between} the magnet’s surface and the plate decreases the lifting capacity.

Precautions with Neodymium Magnets

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

Magnets will attract each other within a distance of several to about 10 cm from each other. Don't put your fingers in the path of magnet attraction, as a significant injury may occur. Depending on how huge the neodymium magnets are, they can lead to a cut or alternatively a fracture.

Neodymium magnets should not be near people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

  Do not give neodymium magnets to children.

Remember that neodymium magnets are not toys. Do not allow children to play with them. They can be a significant choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing severe injuries, and even death.

Neodymium magnets can demagnetize at high temperatures.

In certain circumstances, Neodymium magnets can lose their magnetism when subjected to high temperatures.

Keep neodymium magnets away 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 particularly delicate, resulting in their breakage.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. 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.

Avoid contact with neodymium magnets if you have a nickel 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.

You should keep neodymium magnets at a safe distance from the wallet, computer, and TV.

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, etc. devices. They can also damage devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from 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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times more powerful, and their power can surprise you.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

Safety precautions!

So you are aware of why neodymium magnets are so dangerous, read the article titled How dangerous are strong neodymium magnets?.

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tel: +48 888 99 98 98