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?
Pick up the phone and ask
+48 888 99 98 98
alternatively drop us a message through
form
our website.
Strength along with structure of magnets can be verified on our
online calculation tool.
Same-day shipping for orders placed before 14:00.
Detailed specification - 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out more proposals
![BM 320x180x70 [4x M8] - magnetic beam](https://cdn3.dhit.pl/graphics/products/bm-320x180x70-4x-m8-rar.jpg "BM 320x180x70 [4x M8] - magnetic beam")
![UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder](https://cdn3.dhit.pl/graphics/products/ump-67x28-m8+m10-gw-f-120+-lina-xiw.jpg "UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder")
Strengths and weaknesses of neodymium magnets.
Strengths
- Their magnetic field remains stable, and after approximately ten years it drops only by ~1% (theoretically),
- They are noted for resistance to demagnetization induced by external magnetic fields,
- By applying a reflective layer of silver, the element presents an nice look,
- Magnets possess exceptionally strong magnetic induction on the surface,
- 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...
- Thanks to modularity in designing and the ability to customize to client solutions,
- Fundamental importance in modern technologies – they are commonly used in mass storage devices, electric drive systems, diagnostic systems, also complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in miniature devices
Cons
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these products can disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is a challenge,
Lifting parameters
Maximum holding power of the magnet – what it depends on?
- using a sheet made of high-permeability steel, serving as a ideal flux conductor
- possessing a massiveness of at least 10 mm to ensure full flux closure
- with a plane free of scratches
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the plane
- at temperature room level
Lifting capacity in practice – influencing factors
- Clearance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
- Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be lost into the air.
- Steel grade – the best choice is pure iron steel. Cast iron may attract less.
- Plate texture – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.
Warnings
Serious injuries
Large magnets can smash fingers in a fraction of a second. Never put your hand between two strong magnets.
Nickel coating and allergies
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop handling magnets and use protective gear.
Threat to navigation
Navigation devices and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Fire warning
Powder created during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Pacemakers
People with a ICD should keep an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.
Do not underestimate power
Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.
Swallowing risk
These products are not toys. Eating several magnets may result in them attracting across intestines, which constitutes a direct threat to life and requires immediate surgery.
Operating temperature
Avoid heat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).
Magnet fragility
Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.
Protect data
Avoid bringing magnets near a wallet, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.
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