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AM ucho [M8] - magnetic accessories
magnetic accessories
Catalog no 080268
GTIN/EAN: 5906301812470
Weight
53 g
Load capacity
240.00 kg / 2353.60 N
4.92 ZŁ with VAT / pcs + price for transport
4.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data of the product - AM ucho [M8] - magnetic accessories
Specification / characteristics - AM ucho [M8] - magnetic accessories
| properties | values |
|---|---|
| Cat. no. | 080268 |
| GTIN/EAN | 5906301812470 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 53 g |
| Load capacity ~ ? | 240.00 kg / 2353.60 N |
| Manufacturing Tolerance | ±1 mm |
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 |
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Strengths and weaknesses of rare earth magnets.
Strengths
- They retain attractive force for almost 10 years – the loss is just ~1% (in theory),
- They feature excellent resistance to weakening of magnetic properties when exposed to opposing magnetic fields,
- The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Due to the ability of accurate shaping and customization to unique needs, magnetic components can be produced in a broad palette of geometric configurations, which expands the range of possible applications,
- Significant place in modern technologies – they are used in computer drives, motor assemblies, advanced medical instruments, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in small systems
Cons
- At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- Due to limitations in creating threads and complex forms in magnets, we recommend using cover - magnetic holder.
- Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these products can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- using a base made of low-carbon steel, functioning as a magnetic yoke
- possessing a massiveness of minimum 10 mm to avoid saturation
- with a plane perfectly flat
- without any air gap between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- at temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be escaped into the air.
- Plate material – mild steel attracts best. Higher carbon content lower magnetic permeability and holding force.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
Safe handling of neodymium magnets
Compass and GPS
Note: neodymium magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.
Hand protection
Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.
Skin irritation risks
Certain individuals experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching may cause skin redness. We strongly advise use safety gloves.
Demagnetization risk
Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. The loss of strength is permanent.
Do not drill into magnets
Powder produced during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Material brittleness
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets will cause them breaking into shards.
No play value
Strictly store magnets out of reach of children. Choking hazard is significant, and the effects of magnets clamping inside the body are tragic.
Protect data
Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).
Handling guide
Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.
Medical implants
For implant holders: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.
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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