WM 34.5x24.3x17 / N38 - magnetic hanger
magnetic hanger
Catalog no 240215
GTIN/EAN: 5906301814382
length
34.5 mm [±1 mm]
Width
24.3 mm [±1 mm]
Height
17 mm [±1 mm]
Weight
9 g
Coating
[NiCuNi] Nickel
4.99 ZŁ with VAT / pcs + price for transport
4.06 ZŁ net + 23% VAT / pcs
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Product card - WM 34.5x24.3x17 / N38 - magnetic hanger
Specification / characteristics - WM 34.5x24.3x17 / N38 - magnetic hanger
| properties | values |
|---|---|
| Cat. no. | 240215 |
| GTIN/EAN | 5906301814382 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 34.5 mm [±1 mm] |
| Width | 24.3 mm [±1 mm] |
| Height | 17 mm [±1 mm] |
| Weight | 9 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 |
Material specification
| 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 |
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Advantages and disadvantages of Nd2Fe14B magnets.
Strengths
- They have stable power, and over more than ten years their performance decreases symbolically – ~1% (in testing),
- They do not lose their magnetic properties even under close interference source,
- In other words, due to the shiny surface of gold, the element looks attractive,
- Magnetic induction on the working layer of the magnet turns out to be very high,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Possibility of precise forming as well as modifying to complex applications,
- Key role in innovative solutions – they find application in data components, brushless drives, precision medical tools, also industrial machines.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- 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 stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating threads in the magnet and complicated shapes - preferred is a housing - magnet mounting.
- Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts 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
Pull force analysis
Maximum lifting capacity of the magnet – what it depends on?
- on a base made of mild steel, optimally conducting the magnetic field
- whose transverse dimension reaches at least 10 mm
- with a surface perfectly flat
- with direct contact (no impurities)
- under perpendicular force direction (90-degree angle)
- at room temperature
Key elements affecting lifting force
- Distance (between the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.
Warnings
Bone fractures
Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Be careful!
Magnetic interference
An intense magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Keep magnets close to a device to prevent damaging the sensors.
Powerful field
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Dust explosion hazard
Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Shattering risk
Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
ICD Warning
Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Choking Hazard
These products are not suitable for play. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a direct threat to life and necessitates immediate surgery.
Sensitization to coating
Some people suffer from a sensitization to nickel, which is the common plating for NdFeB magnets. Frequent touching may cause skin redness. We suggest wear protective gloves.
Do not overheat magnets
Avoid heat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Threat to electronics
Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.
Tabela kosztu i czasu dostawy
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Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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