AM Magnetyczny zbieracz / N38 - magnetic accessories
magnetic accessories
Catalog no 080499
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
1.000 zł net / pcs
1.230 zł with VAT (23% VAT) / pcs
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Need more?Frequently asked questions
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Which coating should I choose?
Will I receive documentation with my order?
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Specifications and structure of a neodymium magnet can be estimated using our
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Technical of the product - 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 | 310 | °C |
| Curie Temperature TF | 590 | °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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See more proposals
![UMH 25x8x45 [M5] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-25x8x45-m5-cep.jpg "UMH 25x8x45 [M5] / N38 - magnetic holder with hook")
Pros and cons of rare earth magnets.
Strengths
- They do not lose power, even during nearly 10 years – the decrease in strength is only ~1% (based on measurements),
- They are noted for resistance to demagnetization induced by presence of other magnetic fields,
- A magnet with a metallic nickel surface has an effective appearance,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Considering the possibility of free forming and adaptation to specialized requirements, magnetic components can be created in a broad palette of shapes and sizes, which amplifies use scope,
- Key role in electronics industry – they are used in computer drives, electromotive mechanisms, medical devices, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in compact constructions
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complex shapes in magnets, we propose using a housing - magnetic holder.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Magnetic strength at its maximum – what it depends on?
- with the application of a sheet made of special test steel, ensuring full magnetic saturation
- whose thickness is min. 10 mm
- characterized by smoothness
- under conditions of no distance (surface-to-surface)
- for force acting at a right angle (pull-off, not shear)
- at standard ambient temperature
Key elements affecting lifting force
- Distance (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, rust or dirt).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Hardened steels may attract less.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
- Temperature influence – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.
H&S for magnets
Phone sensors
Navigation devices and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can decalibrate the internal compass in your phone.
Magnet fragility
Beware of splinters. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
Electronic devices
Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).
Life threat
Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Bone fractures
Large magnets can break fingers instantly. Never place your hand betwixt two attracting surfaces.
Heat sensitivity
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. This process is irreversible.
Choking Hazard
Neodymium magnets are not toys. Accidental ingestion of a few magnets can lead to them connecting inside the digestive tract, which poses a critical condition and necessitates immediate surgery.
Caution required
Exercise caution. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.
Avoid contact if allergic
Certain individuals have a contact allergy to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause skin redness. We strongly advise wear protective gloves.
Mechanical processing
Dust generated during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
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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