UMT 29x38 black / N38 - board holder
board holder
Catalog no 230284
GTIN/EAN: 5906301814368
- Diameter Ø
- 29 mm [±1 mm]
- Height
- 38 mm [±1 mm]
- Weight
- 6 g
- Coating
- [NiCuNi] Nickel
6.81 zł with VAT / pcs + price for transport
5.54 zł net + 23% VAT / pcs
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Technical - UMT 29x38 black / N38 - board holder
Specification / characteristics - UMT 29x38 black / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230284 |
| GTIN/EAN | 5906301814368 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 29 mm [±1 mm] |
| Height | 38 mm [±1 mm] |
| Weight | 6 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Pros and cons of Nd2Fe14B magnets.
Benefits
- They do not lose power, even after around ten years – the decrease in strength is only ~1% (theoretically),
- They do not lose their magnetic properties even under strong external field,
- By applying a lustrous layer of silver, the element has an professional look,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- In view of the ability of flexible shaping and customization to unique requirements, neodymium magnets can be created in a broad palette of geometric configurations, which makes them more universal,
- Wide application in modern industrial fields – they are commonly used in mass storage devices, motor assemblies, medical devices, and technologically advanced constructions.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Due to limitations in creating threads and complicated forms in magnets, we recommend using cover - magnetic holder.
- Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Additionally, small components of these devices can be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities
Pull force analysis
Maximum lifting capacity of the magnet – what contributes to it?
- on a block made of mild steel, optimally conducting the magnetic flux
- with a cross-section no less than 10 mm
- characterized by lack of roughness
- with direct contact (without coatings)
- during detachment in a direction perpendicular to the mounting surface
- in temp. approx. 20°C
Lifting capacity in real conditions – factors
- Distance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Steel thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be wasted into the air.
- Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface condition – smooth surfaces ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Temperature influence – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.
Safe handling of neodymium magnets
Threat to navigation
A strong magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Maintain magnets close to a smartphone to prevent damaging the sensors.
Danger to the youngest
Always keep magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are life-threatening.
Handling rules
Handle magnets consciously. Their huge power can surprise even experienced users. Plan your moves and respect their power.
Implant safety
Patients with a heart stimulator have to maintain an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.
Cards and drives
Do not bring magnets close to a wallet, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.
Do not overheat magnets
Keep cool. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Finger safety
Protect your hands. Two powerful magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!
Do not drill into magnets
Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Nickel allergy
Some people suffer from a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching may cause dermatitis. We recommend use safety gloves.
Fragile material
Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.
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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