AM lina fi 10 mm - magnetic accessories
magnetic accessories
Catalog no 080216
GTIN/EAN: 5906301812456
Weight
32 g
Load capacity
1592.00 kg / 15612.19 N
1.476 ZŁ with VAT / pcs + price for transport
1.200 ZŁ net + 23% VAT / pcs
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Technical - AM lina fi 10 mm - magnetic accessories
Specification / characteristics - AM lina fi 10 mm - magnetic accessories
| properties | values |
|---|---|
| Cat. no. | 080216 |
| GTIN/EAN | 5906301812456 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 32 g |
| Load capacity ~ ? | 1592.00 kg / 15612.19 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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Pros as well as cons of rare earth magnets.
Benefits
- They retain magnetic properties for almost 10 years – the loss is just ~1% (in theory),
- They retain their magnetic properties even under external field action,
- Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an elegant appearance,
- Neodymium magnets generate maximum magnetic induction on a small surface, which increases force concentration,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to flexibility in designing and the ability to modify to complex applications,
- Universal use in advanced technology sectors – they are used in magnetic memories, electric motors, advanced medical instruments, as well as technologically advanced constructions.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Cons
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Limited ability of producing threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Furthermore, small components of these magnets can complicate diagnosis 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
Maximum magnetic pulling force – what it depends on?
- using a sheet made of mild steel, functioning as a ideal flux conductor
- whose transverse dimension is min. 10 mm
- characterized by smoothness
- under conditions of gap-free contact (surface-to-surface)
- for force acting at a right angle (pull-off, not shear)
- in stable room temperature
Impact of factors on magnetic holding capacity in practice
- Air gap (betwixt the magnet and the plate), since even a very small distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Pinching danger
Large magnets can smash fingers in a fraction of a second. Never put your hand betwixt two strong magnets.
Handling guide
Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Threat to electronics
Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Risk of cracking
Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.
Allergy Warning
A percentage of the population experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in an allergic reaction. We recommend use safety gloves.
Choking Hazard
NdFeB magnets are not intended for children. Accidental ingestion of several magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and necessitates immediate surgery.
Maximum temperature
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.
Machining danger
Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
GPS and phone interference
Remember: rare earth magnets generate a field that interferes with precision electronics. Keep a separation from your phone, tablet, and navigation systems.
Life threat
Patients with a pacemaker have to keep an large gap from magnets. The magnetism can disrupt the functioning of the life-saving device.
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