LM TLN - 15 SQ / N38 - magnetic leviton
magnetic leviton
Catalog no 290493
GTIN/EAN: 5906301814511
Weight
1000 g
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Physical properties - 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 |
View also proposals
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![UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread](https://cdn3.dhit.pl/graphics/products/um-36x18x8-m8-gz-xiv.jpg "UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread")
Pros and cons of rare earth magnets.
Benefits
- Their magnetic field is maintained, and after approximately ten years it decreases only by ~1% (according to research),
- Neodymium magnets prove to be highly resistant to demagnetization caused by magnetic disturbances,
- In other words, due to the aesthetic layer of nickel, the element gains visual value,
- Neodymium magnets achieve maximum magnetic induction on a their surface, which ensures high operational effectiveness,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Thanks to modularity in constructing and the capacity to customize to client solutions,
- Key role in electronics industry – they find application in computer drives, drive modules, medical equipment, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions
Cons
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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 oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited ability of producing threads in the magnet and complex shapes - preferred is cover - magnet mounting.
- Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small components of these devices can complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Maximum holding power of the magnet – what contributes to it?
- using a sheet made of mild steel, acting as a magnetic yoke
- possessing a thickness of min. 10 mm to avoid saturation
- characterized by even structure
- under conditions of gap-free contact (surface-to-surface)
- for force acting at a right angle (in the magnet axis)
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Base massiveness – too thin sheet does not close the flux, causing part of the power to be escaped to the other side.
- Material type – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
- Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the load capacity.
Safety rules for work with neodymium magnets
Magnet fragility
Neodymium magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them breaking into shards.
Dust is flammable
Dust created during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Allergy Warning
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.
Heat sensitivity
Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.
Compass and GPS
Note: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your phone, tablet, and navigation systems.
Choking Hazard
Only for adults. Small elements can be swallowed, leading to intestinal necrosis. Store away from kids and pets.
Safe distance
Intense magnetic fields can erase data on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.
Bone fractures
Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.
Caution required
Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
ICD Warning
For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
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