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:
Need more?
Give us a call
+48 22 499 98 98
alternatively contact us by means of
inquiry form
the contact page.
Specifications along with appearance of a magnet can be checked with our
force calculator.
Order by 14:00 and we’ll ship today!
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 |
Material specification
| 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 |
Other proposals
![SM 25x225 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x225-2xm8-lod.jpg "SM 25x225 [2xM8] / N52 - magnetic separator")
![SM 18x225 [2xM5] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-18x225-2xm5-wiv.jpg "SM 18x225 [2xM5] / N42 - magnetic separator")
Advantages and disadvantages of neodymium magnets.
Advantages
- They have stable power, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- They maintain their magnetic properties even under close interference source,
- Thanks to the glossy finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
- Neodymium magnets deliver maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of accurate modeling as well as optimizing to precise applications,
- Fundamental importance in modern technologies – they are commonly used in data components, drive modules, medical devices, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in small systems
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and 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
- Due to limitations in realizing nuts and complex forms in magnets, we recommend using cover - magnetic mechanism.
- Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these devices can disrupt the diagnostic process medical when they are in the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Pull force analysis
Best holding force of the magnet in ideal parameters – what affects it?
- on a base made of structural steel, perfectly concentrating the magnetic flux
- with a thickness no less than 10 mm
- with an ideally smooth touching surface
- under conditions of no distance (surface-to-surface)
- for force applied at a right angle (pull-off, not shear)
- at room temperature
Lifting capacity in practice – influencing factors
- Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
- Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Temperature influence – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Pinching danger
Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Use thick gloves.
Caution required
Use magnets consciously. Their huge power can shock even experienced users. Stay alert and respect their force.
Keep away from computers
Powerful magnetic fields can erase data on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.
Do not give to children
Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep out of reach of kids and pets.
Nickel coating and allergies
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, cease handling magnets and wear gloves.
Magnetic interference
Be aware: rare earth magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, device, and navigation systems.
ICD Warning
People with a heart stimulator should maintain an large gap from magnets. The magnetism can stop the operation of the implant.
Fragile material
Neodymium magnets are ceramic materials, which means they are very brittle. Clashing of two magnets will cause them shattering into shards.
Dust is flammable
Dust produced during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Heat sensitivity
Avoid heat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, look for HT versions (H, SH, UH).
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
Rate the product
Your rating