UMT 12x20 red / N38 - board holder
board holder
Catalog no 230278
GTIN/EAN: 5906301814306
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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Strength as well as form of a neodymium magnet can be checked on our
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Technical details - UMT 12x20 red / N38 - board holder
Specification / characteristics - UMT 12x20 red / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230278 |
| GTIN/EAN | 5906301814306 |
| 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 |
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 |
Other deals
![UMH 32x8x46 [M6] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-32x8x46-m6-xov.jpg "UMH 32x8x46 [M6] / N38 - magnetic holder with hook")
Advantages as well as disadvantages of rare earth magnets.
Advantages
- They retain full power for around ten years – the loss is just ~1% (in theory),
- They are extremely resistant to demagnetization induced by external disturbances,
- Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an modern appearance,
- Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Thanks to the option of accurate forming and customization to specialized solutions, neodymium magnets can be modeled in a wide range of geometric configurations, which expands the range of possible applications,
- Huge importance in advanced technology sectors – they are utilized in HDD drives, motor assemblies, precision medical tools, also modern systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Cons
- At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 very resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated forms.
- Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these devices can complicate diagnosis medical when they are in the body.
- Due to complex production process, their price is higher than average,
Pull force analysis
Maximum lifting force for a neodymium magnet – what it depends on?
- on a plate made of structural steel, optimally conducting the magnetic field
- with a thickness of at least 10 mm
- with an ideally smooth contact surface
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at temperature room level
Magnet lifting force in use – key factors
- Gap (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
- Surface quality – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Thermal environment – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.
Safe handling of NdFeB magnets
Implant safety
For implant holders: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or request help to work with the magnets.
Cards and drives
Intense magnetic fields can erase data on credit cards, hard drives, and storage devices. Stay away of at least 10 cm.
Operating temperature
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.
Precision electronics
Be aware: rare earth magnets generate a field that confuses sensitive sensors. Keep a safe distance from your mobile, tablet, and GPS.
Adults only
These products are not toys. Eating a few magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.
Caution required
Handle magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and respect their force.
Crushing force
Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!
Fire risk
Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.
Allergic reactions
It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact and select versions in plastic housing.
Eye protection
Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
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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