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AM klisza magnetyczna 50 x 50 mm - magnetic accessories

magnetic accessories

Catalog no 080471

GTIN/EAN: 5906301812517

5.00
Weight
0.05 g

How we measure these parameters — certificates and measurements

see properties »

20.00 zł net / pcs

24.60 zł with VAT (23% VAT) / pcs

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Frequently asked questions

Do you make magnets to order?
Yes. We make sizes and shapes outside the catalogue, in grades from N27 to N55 and in high-temperature versions. Lead time depends on the shape and batch size — for rings it is 25–35 days.
Which coating should I choose?
NiCuNi is the standard and covers most applications. Zinc is cheaper and suits dry interiors, epoxy suits damp conditions and outdoor use, gold is chosen where appearance matters. An uncoated magnet corrodes in humid air within a few hours.
Will I receive documentation with my order?
Yes. We issue a REACH statement for the article, a declaration of conformity for the packaging under PPWR, and a certificate of measured magnetic parameters. Documents are issued on request, for a specific article or order number.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Product card - AM klisza magnetyczna 50 x 50 mm - magnetic accessories

Specification / characteristics - AM klisza magnetyczna 50 x 50 mm - magnetic accessories

properties
properties values
Cat. no. 080471
GTIN/EAN 5906301812517
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Weight 0.05 g
Manufacturing Tolerance ±1 mm

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Technical and environmental data

Chemical composition

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Ecology and recycling (GPSR)

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 080471-2026
Measurement Calculator

Pulling force

Magnetic Induction

Input a figure in just one field to get results in all other units at once.

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This category contains replaceable tips, adapters, and fasteners for magnets. We offer, among others: various types of hooks, eye bolts (shackles), steel plates (washers), and rubber covers. These are essential elements to fully utilize the potential of neodymium magnets in practice.
The plate serves as a base (armature) to which the magnet will attach. Mounting consists of gluing or screwing the washer to a non-magnetic substrate. This enables creating magnetic closures anywhere in the home and office.
Tips fit sockets with thread M3, M4, M5, M6, M8, M10, M12, etc. Before purchase, check the thread size in your magnetic holder (it is given in the description). Most elements are protected against rust by galvanic zinc.
The cap increases friction (coefficient of friction), preventing the magnet from sliding down a vertical wall. Use them wherever direct metal contact could damage the surface. Surface safety comes at the cost of a small loss of nominal power.
We fulfill orders for any quantities, from one piece to thousands of items. For B2B clients, we have special trade conditions and deferred payment terms. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
  • They possess excellent resistance to magnetic field loss as a result of external magnetic sources,
  • In other words, due to the aesthetic surface of silver, the element becomes visually attractive,
  • Magnets are distinguished by maximum magnetic induction on the active area,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
  • Possibility of detailed forming as well as adjusting to defined conditions,
  • Huge importance in future technologies – they are utilized in HDD drives, brushless drives, advanced medical instruments, as well as technologically advanced constructions.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in creating threads and complex shapes in magnets, we propose using casing - magnetic holder.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

Holding force of 0.00 kg is a theoretical maximum value executed under standard conditions:
  • using a base made of high-permeability steel, acting as a ideal flux conductor
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with an ground touching surface
  • without any clearance between the magnet and steel
  • under axial force vector (90-degree angle)
  • in neutral thermal conditions

Determinants of practical lifting force of a magnet

Real force is affected by specific conditions, such as (from most important):
  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – highest force is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick plate does not accept the full field, causing part of the power to be lost to the other side.
  • Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets
Medical interference

People with a pacemaker have to maintain an safe separation from magnets. The magnetic field can disrupt the operation of the implant.

This is not a toy

Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep out of reach of kids and pets.

Warning for allergy sufferers

It is widely known that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, avoid direct skin contact and opt for encased magnets.

Risk of cracking

NdFeB magnets are sintered ceramics, meaning they are very brittle. Clashing of two magnets leads to them breaking into small pieces.

Threat to electronics

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Fire warning

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Safe operation

Exercise caution. Rare earth magnets attract from a distance and connect with huge force, often quicker than you can move away.

Finger safety

Protect your hands. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!

Do not overheat magnets

Regular neodymium magnets (grade N) lose power when the temperature surpasses 80°C. Damage is permanent.

GPS Danger

Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Warning! More info about risks in the article: Magnet Safety Guide.