UMT 11x17 colorless / N38 - board holder
board holder
Catalog no 230266
GTIN/EAN: 5906301814290
Diameter Ø
11 mm [±1 mm]
Height
17 mm [±1 mm]
Weight
3 g
Coating
[NiCuNi] Nickel
1.538 ZŁ with VAT / pcs + price for transport
1.250 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - UMT 11x17 colorless / N38 - board holder
Specification / characteristics - UMT 11x17 colorless / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230266 |
| GTIN/EAN | 5906301814290 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 11 mm [±1 mm] |
| Height | 17 mm [±1 mm] |
| Weight | 3 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Strengths
- Their power remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
- Neodymium magnets are characterized by remarkably resistant to demagnetization caused by external field sources,
- Thanks to the metallic finish, the layer of nickel, gold, or silver-plated gives an aesthetic appearance,
- Neodymium magnets achieve maximum magnetic induction on a contact point, 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 form) at temperatures up to 230°C and above...
- Thanks to freedom in forming and the capacity to modify to unusual requirements,
- Universal use in modern industrial fields – they serve a role in mass storage devices, drive modules, diagnostic systems, also multitasking production systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Weaknesses
- At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating nuts and complicated forms in magnets, we propose using a housing - magnetic mount.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these products are able to complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Highest magnetic holding force – what it depends on?
- using a sheet made of high-permeability steel, acting as a circuit closing element
- possessing a thickness of min. 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- with zero gap (no paint)
- under vertical force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Practical lifting capacity: influencing factors
- Gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Steel thickness – too thin sheet does not accept the full field, causing part of the power to be wasted to the other side.
- Plate material – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
- Plate texture – ground elements ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate reduces the load capacity.
H&S for magnets
Power loss in heat
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Medical interference
Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Avoid contact if allergic
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness appears, cease handling magnets and wear gloves.
Precision electronics
Remember: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.
Swallowing risk
Neodymium magnets are not suitable for play. Eating multiple magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires urgent medical intervention.
Electronic devices
Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Shattering risk
Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Do not underestimate power
Handle with care. Rare earth magnets act from a long distance and connect with huge force, often quicker than you can move away.
Physical harm
Big blocks can break fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.
Do not drill into magnets
Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.
Tabela kosztu i czasu dostawy
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