LM TLN - 15 SQ / N38 - magnetic leviton
magnetic leviton
Catalog no 290493
GTIN/EAN: 5906301814511
Weight
1000 g
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Technical of the product - LM TLN - 15 SQ / N38 - magnetic leviton
Specification / characteristics - LM TLN - 15 SQ / N38 - magnetic leviton
| properties | values |
|---|---|
| Cat. no. | 290493 |
| GTIN/EAN | 5906301814511 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 1000 g |
| 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 |
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages as well as disadvantages of neodymium magnets.
Strengths
- They retain attractive force for almost ten years – the drop is just ~1% (based on simulations),
- They retain their magnetic properties even under external field action,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnetic induction on the working part of the magnet is impressive,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of accurate shaping and adjusting to atypical requirements,
- Wide application in high-tech industry – they are used in hard drives, drive modules, medical devices, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in miniature devices
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- We recommend cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated forms.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these products are able to disrupt the diagnostic process medical in case of swallowing.
- With large orders the cost of neodymium magnets is economically unviable,
Pull force analysis
Maximum holding power of the magnet – what contributes to it?
- with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
- with a thickness minimum 10 mm
- with a plane cleaned and smooth
- with direct contact (without coatings)
- for force applied at a right angle (pull-off, not shear)
- at ambient temperature approx. 20 degrees Celsius
Determinants of lifting force in real conditions
- Distance (between the magnet and the plate), since even a tiny clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Angle of force application – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
- Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the load capacity.
Safe handling of neodymium magnets
Heat sensitivity
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.
Medical implants
People with a ICD should keep an safe separation from magnets. The magnetism can interfere with the functioning of the life-saving device.
GPS and phone interference
Note: rare earth magnets produce a field that interferes with sensitive sensors. Maintain a separation from your mobile, device, and GPS.
Handling guide
Handle magnets with awareness. Their huge power can shock even experienced users. Be vigilant and do not underestimate their force.
Magnetic media
Data protection: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Eye protection
NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them shattering into shards.
Mechanical processing
Machining of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Nickel allergy
Studies show that nickel (the usual finish) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and select encased magnets.
Danger to the youngest
Neodymium magnets are not intended for children. Accidental ingestion of multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.
Crushing risk
Protect your hands. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!
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):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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