UMT 12x20 orange / N38 - board holder
board holder
Catalog no 230282
GTIN/EAN: 5906301814344
- 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 orange / N38 - board holder
Specification / characteristics - UMT 12x20 orange / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230282 |
| GTIN/EAN | 5906301814344 |
| 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 |
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 offers
Advantages as well as disadvantages of neodymium magnets.
Benefits
- They have constant strength, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
- They show high resistance to demagnetization induced by external field influence,
- The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- In view of the potential of flexible shaping and adaptation to unique solutions, magnetic components can be modeled in a broad palette of forms and dimensions, which increases their versatility,
- Universal use in modern industrial fields – they find application in magnetic memories, brushless drives, diagnostic systems, and complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in realizing threads and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
- Health risk related to microscopic parts 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 be problematic in diagnostics medical when they are in the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Pull force analysis
Highest magnetic holding force – what affects it?
- with the use of a sheet made of special test steel, ensuring maximum field concentration
- possessing a thickness of min. 10 mm to avoid saturation
- characterized by smoothness
- with direct contact (without paint)
- under perpendicular force vector (90-degree angle)
- at room temperature
Impact of factors on magnetic holding capacity in practice
- Gap (between the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – mild steel attracts best. Alloy steels lower magnetic properties and lifting capacity.
- Surface structure – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Warnings
Do not underestimate power
Be careful. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can react.
Fire warning
Powder created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Crushing force
Large magnets can smash fingers instantly. Under no circumstances put your hand between two attracting surfaces.
GPS and phone interference
Note: rare earth magnets produce a field that confuses precision electronics. Keep a separation from your mobile, tablet, and navigation systems.
Skin irritation risks
Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness appears, cease handling magnets and wear gloves.
Swallowing risk
Product intended for adults. Small elements pose a choking risk, causing severe trauma. Keep out of reach of kids and pets.
Data carriers
Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).
Medical implants
Warning for patients: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.
Power loss in heat
Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. This process is irreversible.
Shattering risk
Despite metallic appearance, the material 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
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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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