UMT 12x20 white / N38 - board holder
board holder
Catalog no 230265
GTIN/EAN: 5906301814283
Diameter Ø
12 mm [±1 mm]
Height
20 mm [±1 mm]
Weight
3.5 g
Coating
[NiCuNi] Nickel
1.894 ZŁ with VAT / pcs + price for transport
1.540 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMT 12x20 white / N38 - board holder
Specification / characteristics - UMT 12x20 white / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230265 |
| GTIN/EAN | 5906301814283 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 12 mm [±1 mm] |
| Height | 20 mm [±1 mm] |
| Weight | 3.5 g |
| Coating | [NiCuNi] Nickel |
| 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 |
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also deals
![SM 25x225 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x225-2xm8-tix.jpg "SM 25x225 [2xM8] / N42 - magnetic separator")
Advantages and disadvantages of Nd2Fe14B magnets.
Pros
- They have constant strength, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by external magnetic fields,
- The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets ensure maximum magnetic induction on a small surface, which allows for strong attraction,
- 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...
- Thanks to modularity in forming and the ability to adapt to specific needs,
- Wide application in high-tech industry – they are utilized in data components, motor assemblies, medical equipment, also industrial machines.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- Limited possibility of creating nuts in the magnet and complex shapes - preferred is casing - magnetic holder.
- Potential hazard to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these magnets are able to be problematic in diagnostics medical in case of swallowing.
- Due to expensive raw materials, their price is higher than average,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a base made of mild steel, optimally conducting the magnetic field
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- under conditions of ideal adhesion (metal-to-metal)
- during detachment in a direction vertical to the mounting surface
- at temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Air gap (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
- Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin plate causes magnetic saturation, causing part of the flux to be escaped to the other side.
- Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
- Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
H&S for magnets
Keep away from electronics
A strong magnetic field disrupts the operation of compasses in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.
Allergic reactions
Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If you have an allergy, refrain from direct skin contact or choose encased magnets.
Magnetic media
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.
Swallowing risk
Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.
Magnets are brittle
Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.
Caution required
Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Fire risk
Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Finger safety
Protect your hands. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Maximum temperature
Regular neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
ICD Warning
Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.
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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