JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs
magnetic eggs
Catalog no 270213
GTIN/EAN: 5906301814412
Weight
83 g
8.99 ZŁ with VAT / pcs + price for transport
7.31 ZŁ net + 23% VAT / pcs
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Technical details - JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs
Specification / characteristics - JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs
| properties | values |
|---|---|
| Cat. no. | 270213 |
| GTIN/EAN | 5906301814412 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 83 g |
| 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 |
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Advantages and disadvantages of rare earth magnets.
Benefits
- Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (theoretically),
- They are noted for resistance to demagnetization induced by external disturbances,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
- Possibility of accurate forming as well as modifying to complex applications,
- Significant place in innovative solutions – they are commonly used in magnetic memories, electric motors, medical devices, and complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited ability of producing nuts in the magnet and complex shapes - preferred is a housing - magnet mounting.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Maximum magnetic pulling force – what contributes to it?
- using a base made of low-carbon steel, serving as a ideal flux conductor
- whose transverse dimension reaches at least 10 mm
- characterized by smoothness
- under conditions of ideal adhesion (surface-to-surface)
- during detachment in a direction vertical to the mounting surface
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to varnish, rust or dirt).
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
- Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the load capacity.
H&S for magnets
Threat to navigation
A strong magnetic field interferes with the functioning of compasses in smartphones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.
Crushing force
Large magnets can crush fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.
Respect the power
Exercise caution. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can react.
Do not drill into magnets
Fire warning: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.
Allergy Warning
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness happens, immediately stop working with magnets and use protective gear.
Protect data
Do not bring magnets near a purse, laptop, or screen. The magnetism can permanently damage these devices and erase data from cards.
Material brittleness
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.
Danger to pacemakers
Individuals with a pacemaker must maintain an absolute distance from magnets. The magnetic field can stop the functioning of the implant.
No play value
Neodymium magnets are not suitable for play. Swallowing a few magnets can lead to them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.
Maximum temperature
Control the heat. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
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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