![Magnet for badge UI 17.5x5 [C310] / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnet for badge UI 17.5x5 [C310] / N38")
![UI 17.5x5 [C310] / N38 - badge holder](https://cdn3.dhit.pl/graphics/products/ui17.5x5-c310-rud.jpg)
UI 17.5x5 [C310] / N38 - badge holder
badge holder
Catalog no 150261
GTIN/EAN: 5906301813583
Diameter Ø
17.5 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
0.11 g
Load capacity
0.75 kg / 7.35 N
1.316 ZŁ with VAT / pcs + price for transport
1.070 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - UI 17.5x5 [C310] / N38 - badge holder
Specification / characteristics - UI 17.5x5 [C310] / N38 - badge holder
| properties | values |
|---|---|
| Cat. no. | 150261 |
| GTIN/EAN | 5906301813583 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of neodymium magnets.
Pros
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They possess excellent resistance to magnetism drop due to external magnetic sources,
- By applying a reflective coating of gold, the element presents an nice look,
- Magnets exhibit impressive magnetic induction on the outer side,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
- Thanks to freedom in shaping and the ability to adapt to client solutions,
- Versatile presence in high-tech industry – they are commonly used in computer drives, motor assemblies, diagnostic systems, also industrial machines.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Due to limitations in creating nuts and complicated shapes in magnets, we propose using cover - magnetic holder.
- Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Holding force characteristics
Maximum lifting force for a neodymium magnet – what it depends on?
- on a base made of structural steel, perfectly concentrating the magnetic flux
- with a cross-section no less than 10 mm
- with an ground touching surface
- without the slightest clearance between the magnet and steel
- during detachment in a direction vertical to the plane
- at temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Distance (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Steel type – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
- Surface finish – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. In addition, even a small distance between the magnet and the plate lowers the holding force.
Precautions when working with neodymium magnets
Fragile material
Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.
ICD Warning
Health Alert: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.
Physical harm
Danger of trauma: The pulling power is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
GPS Danger
Be aware: neodymium magnets generate a field that interferes with precision electronics. Maintain a safe distance from your mobile, device, and GPS.
Safe distance
Avoid bringing magnets close to a purse, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Flammability
Machining of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Demagnetization risk
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Danger to the youngest
Strictly keep magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are life-threatening.
Nickel allergy
Some people suffer from a contact allergy to nickel, which is the common plating for neodymium magnets. Extended handling might lead to a rash. We recommend wear safety gloves.
Respect the power
Handle with care. Neodymium magnets act from a long distance and snap with huge force, often faster than you can move away.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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