Neodymium magnets – most powerful on the market

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UI 40x12x7 [CA] - badge holder

badge holder

Catalog no 150341

GTIN/EAN: 5906301813613

5.00

length

40 mm [±1 mm]

Width

12 mm [±1 mm]

Height

7 mm [±1 mm]

Weight

1.5 g

0.984 with VAT / pcs + price for transport

0.800 ZŁ net + 23% VAT / pcs

bulk discounts:

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Give us a call +48 888 99 98 98 or contact us through contact form our website.
Lifting power along with form of a magnet can be checked using our our magnetic calculator.

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Technical details - UI 40x12x7 [CA] - badge holder

Specification / characteristics - UI 40x12x7 [CA] - badge holder

properties
properties values
Cat. no. 150341
GTIN/EAN 5906301813613
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 40 mm [±1 mm]
Width 12 mm [±1 mm]
Height 7 mm [±1 mm]
Weight 1.5 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 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 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
Elemental analysis
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%
Environmental data
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: 150341-2026
Magnet Unit Converter
Magnet pull force

Field Strength

Other deals

Unlike safety pins or pins, magnetic fastening leaves no marks or holes on the material. Thanks to this, the badge looks professional, straight, and aesthetic all day long. It is the most frequently chosen type of fastening in corporations, hotels, and banks.
The set consists of two elements: the magnetic part (back) and the mounting plate (front). You stick your badge on the plate, and the magnet holds it through the clothing material. The plastic magnet housing is pleasant to the touch, smooth, and safe for the user.
Thanks to the use of neodymium, the holder securely grips through a jacket, thick sweater, fleece, or coat. Model UI 40x12x7 [CA] ensures optimal grip without the risk of losing the badge in motion.
People with a pacemaker or other implanted medical devices should not wear magnets near the chest area. For other people, magnets are completely safe and indifferent to health.
Yes, we are a direct importer and fulfill large wholesale orders. Contact us to receive an individual B2B offer tailored to your company's needs.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • They retain full power for around 10 years – the loss is just ~1% (based on simulations),
  • They show high resistance to demagnetization induced by external field influence,
  • A magnet with a shiny silver surface is more attractive,
  • Magnetic induction on the top side of the magnet turns out to be extremely intense,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in forming and the ability to customize to unusual requirements,
  • Versatile presence in future technologies – they are used in magnetic memories, electromotive mechanisms, medical equipment, and complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex shapes.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • Due to complex production process, their price is relatively high,

Lifting parameters

Best holding force of the magnet in ideal parameterswhat affects it?

The force parameter is a theoretical maximum value conducted under the following configuration:
  • using a plate made of low-carbon steel, acting as a circuit closing element
  • with a cross-section minimum 10 mm
  • with a surface cleaned and smooth
  • without any clearance between the magnet and steel
  • during detachment in a direction vertical to the plane
  • at ambient temperature approx. 20 degrees Celsius

Key elements affecting lifting force

Real force is affected by specific conditions, including (from most important):
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be wasted into the air.
  • Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
  • Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets
Keep away from computers

Do not bring magnets close to a wallet, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Magnets are brittle

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Implant safety

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

GPS Danger

GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Crushing risk

Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Do not give to children

Absolutely keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Permanent damage

Avoid heat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, ask us about HT versions (H, SH, UH).

Do not drill into magnets

Powder produced during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Immense force

Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can react.

Sensitization to coating

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Security! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98