AM Magnetyczny zbieracz / N38 - magnetic accessories
magnetic accessories
Catalog no 080499
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
1.230 ZŁ with VAT / pcs + price for transport
1.000 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical parameters - AM Magnetyczny zbieracz / N38 - magnetic accessories
Specification / characteristics - AM Magnetyczny zbieracz / N38 - magnetic accessories
| properties | values |
|---|---|
| Cat. no. | 080499 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Magnetization Direction | ↑ axial |
| 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 |
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Strengths and weaknesses of Nd2Fe14B magnets.
Advantages
- They do not lose strength, even after around 10 years – the drop in lifting capacity is only ~1% (according to tests),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to look better,
- They are known for high magnetic induction at the operating surface, making them more effective,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Due to the possibility of flexible shaping and adaptation to unique requirements, neodymium magnets can be modeled in a variety of shapes and sizes, which increases their versatility,
- Versatile presence in modern technologies – they are commonly used in computer drives, electromotive mechanisms, diagnostic systems, also complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in small systems
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Limited ability of creating nuts in the magnet and complex shapes - recommended is cover - magnetic holder.
- Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these products can disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- on a base made of structural steel, optimally conducting the magnetic field
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an polished touching surface
- with zero gap (without paint)
- under vertical force direction (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Higher carbon content decrease magnetic properties and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
- Temperature influence – hot environment reduces 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, however under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
Data carriers
Device Safety: Strong magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).
Nickel allergy
It is widely known that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, avoid direct skin contact and choose coated magnets.
This is not a toy
Neodymium magnets are not intended for children. Swallowing a few magnets may result in them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.
Fire warning
Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Heat warning
Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and pulling force.
Magnetic interference
GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Handling rules
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Hand protection
Big blocks can crush fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.
Protective goggles
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them breaking into shards.
Warning for heart patients
Patients with a heart stimulator should keep an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.
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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