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 specification - 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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Pros and cons of neodymium magnets.
Benefits
- Their strength remains stable, and after approximately 10 years it drops only by ~1% (according to research),
- Neodymium magnets remain remarkably resistant to demagnetization caused by external interference,
- Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
- Neodymium magnets deliver maximum magnetic induction on a small area, which allows for strong attraction,
- 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...
- Possibility of accurate modeling and adapting to individual needs,
- Significant place in electronics industry – they find application in computer drives, electromotive mechanisms, medical equipment, also modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 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 stable to moisture, in case of application outdoors
- Limited possibility of making threads in the magnet and complicated forms - recommended is a housing - magnetic holder.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these products can disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Lifting parameters
Highest magnetic holding force – what affects it?
- using a plate made of high-permeability steel, acting as a magnetic yoke
- possessing a thickness of at least 10 mm to avoid saturation
- with an polished touching surface
- with zero gap (without impurities)
- during detachment in a direction vertical to the mounting surface
- at room temperature
Practical aspects of lifting capacity – factors
- Distance (betwixt the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel type – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and lifting capacity.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate reduces the lifting capacity.
Safety rules for work with NdFeB magnets
Cards and drives
Data protection: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Magnet fragility
Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.
Warning for heart patients
Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Allergic reactions
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, cease working with magnets and wear gloves.
Demagnetization risk
Control the heat. Heating the magnet to high heat will ruin its properties and pulling force.
Adults only
These products are not toys. Accidental ingestion of multiple magnets may result in them attracting across intestines, which poses a critical condition and requires urgent medical intervention.
Safe operation
Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
Crushing risk
Mind your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!
Machining danger
Machining of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
GPS Danger
A powerful magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Maintain magnets near a smartphone to avoid damaging the sensors.
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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