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UI 17.5x5 [C310] / N38 - badge holder

badge holder

Catalog no 150261

GTIN/EAN: 5906301813583

5.00
Load capacity 0.75 kg / 7.35 N
Diameter Ø
17.5 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
0.11 g
technical specifications »

1.316 zł with VAT / pcs + price for transport

1.070 zł net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
Need advice?

Pick up the phone and ask +48 888 99 98 98 otherwise contact us using request form the contact form page.
Lifting power along with shape of magnets can be checked on our force calculator.

Orders submitted before 14:00 will be dispatched today!

Technical details - UI 17.5x5 [C310] / N38 - badge holder

Specification / characteristics - UI 17.5x5 [C310] / N38 - badge holder

properties
properties values
Cat. no. 150261
GTIN/EAN 5906301813583
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 17.5 mm [±1 mm]
Height 5 mm [±1 mm]
Weight 0.11 g
Load capacity ~ ? 0.75 kg / 7.35 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UI 17.5x5 [C310] / N38 - badge holder
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. temperature ? ≤ 80 °C

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%

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: 150261-2026
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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's a standard solution at conferences, trade fairs, and in companies caring about image.
The set consists of two elements: the magnetic part (back) and the mounting plate (front). The outer part has strong 3M foam tape, to which a business card or plastic case is stuck. The plastic magnet housing is pleasant to the touch, smooth, and safe for the user.
Attraction force is sufficient to hold the badge even on winter clothing. Model UI 17.5x5 [C310] / N38 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.
We serve advertising agencies, printing houses, hotels, and corporations, offering attractive prices for bulk purchases. Contact us to receive an individual B2B offer tailored to your company's needs.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They do not lose magnetism, even over around ten years – the reduction in lifting capacity is only ~1% (theoretically),
  • They do not lose their magnetic properties even under strong external field,
  • By using a lustrous coating of silver, the element presents an modern look,
  • The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of detailed creating as well as optimizing to individual applications,
  • Significant place in advanced technology sectors – they serve a role in computer drives, drive modules, medical equipment, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Cons

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We recommend cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to be problematic in diagnostics medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

Breakaway force is the result of a measurement for optimal configuration, including:
  • using a sheet made of high-permeability steel, serving as a ideal flux conductor
  • with a cross-section minimum 10 mm
  • with a plane perfectly flat
  • without any insulating layer between the magnet and steel
  • under perpendicular application of breakaway force (90-degree angle)
  • in stable room temperature

Determinants of practical lifting force of a magnet

In real-world applications, the actual holding force results from many variables, presented from crucial:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be escaped into the air.
  • Material type – the best choice is pure iron steel. Cast iron may have worse magnetic properties.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Warnings
Dust explosion hazard

Dust created during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Health Danger

Health Alert: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Bone fractures

Large magnets can break fingers instantly. Do not put your hand between two attracting surfaces.

Safe operation

Handle with care. Neodymium magnets act from a long distance and connect with huge force, often faster than you can move away.

Nickel coating and allergies

Some people suffer from a sensitization to Ni, which is the common plating for neodymium magnets. Extended handling can result in skin redness. It is best to wear protective gloves.

Electronic hazard

Device Safety: Strong magnets can damage data carriers and sensitive devices (heart implants, medical aids, mechanical watches).

Danger to the youngest

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep away from children and animals.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Compass and GPS

GPS units and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Permanent damage

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Safety First! Learn more about risks in the article: Safety of working with magnets.