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
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Technical data - 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 |
See also products
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Advantages and disadvantages of Nd2Fe14B magnets.
Benefits
- Their strength is durable, and after around ten years it decreases only by ~1% (according to research),
- Magnets perfectly resist against demagnetization caused by external fields,
- A magnet with a shiny gold surface has an effective appearance,
- Magnets are characterized by exceptionally strong magnetic induction on the outer layer,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures reaching 230°C and above...
- In view of the possibility of precise shaping and customization to custom solutions, magnetic components can be manufactured in a variety of forms and dimensions, which increases their versatility,
- Significant place in modern industrial fields – they are used in mass storage devices, brushless drives, precision medical tools, and industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets decrease their power 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
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited ability of making nuts in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these devices can complicate diagnosis 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 holding power of the magnet – what contributes to it?
- with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
- whose thickness is min. 10 mm
- with a surface free of scratches
- without any clearance between the magnet and steel
- during detachment in a direction perpendicular to the plane
- in temp. approx. 20°C
Lifting capacity in practice – influencing factors
- Clearance – the presence of any layer (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be lost to the other side.
- Material type – the best choice is pure iron steel. Stainless steels may attract less.
- Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal reduce efficiency.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.
Precautions when working with neodymium magnets
Danger to the youngest
Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are life-threatening.
Eye protection
Neodymium magnets are sintered ceramics, meaning they are very brittle. Clashing of two magnets will cause them breaking into shards.
Heat warning
Avoid heat. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Magnetic interference
Navigation devices and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.
Skin irritation risks
Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, immediately stop working with magnets and use protective gear.
Bone fractures
Big blocks can break fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.
Medical implants
Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.
Dust explosion hazard
Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Conscious usage
Handle magnets consciously. Their huge power can shock even professionals. Stay alert and respect their force.
Protect data
Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Tabela kosztu i czasu dostawy
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23.00 ZŁ
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