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LM TLN - 15 SQ / N38 - magnetic leviton

magnetic leviton

Catalog no 290493

GTIN/EAN: 5906301814511

5.00
Weight
1000 g

How we measure these parameters — certificates and measurements

365.85net / pcs

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Frequently asked questions

Do you make magnets to order?
Yes. We make sizes and shapes outside the catalogue, in grades from N27 to N55 and in high-temperature versions. Lead time depends on the shape and batch size — for rings it is 25–35 days.
Which coating should I choose?
NiCuNi is the standard and covers most applications. Zinc is cheaper and suits dry interiors, epoxy suits damp conditions and outdoor use, gold is chosen where appearance matters. An uncoated magnet corrodes in humid air within a few hours.
Will I receive documentation with my order?
Yes. We issue a REACH statement for the article, a declaration of conformity for the packaging under PPWR, and a certificate of measured magnetic parameters. Documents are issued on request, for a specific article or order number.
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Detailed specification - LM TLN - 15 SQ / N38 - magnetic leviton

Specification / characteristics - LM TLN - 15 SQ / N38 - magnetic leviton

properties
properties values
Cat. no. 290493
GTIN/EAN 5906301814511
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Weight 1000 g
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics LM TLN - 15 SQ / N38 - magnetic leviton
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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
Technical specification and ecology

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%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 290493-2026
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Magnet pull force


Magnetic Field

Other proposals

Levitron is a science gadget demonstrating the phenomenon of magnetic levitation in practice. There is no magic or hidden threads here – it's pure physics and balance of forces.
To make the top levitate, you need to perfectly balance it using the included washers, which depends e.g. on ambient temperature. The top falls if rotations are too slow or weight is poorly selected – it's a great lesson in humility and physics.
Batteries are not needed for the top to float itself – it's pure magnetic energy. Magnets in the base are durable and do not lose their properties for many years.
It works great as an elegant, intriguing decoration for a CEO's or office worker's desk. For children, it is a fascinating physics lesson but requires patience and adult help with calibration.
Included is a set of precision washers (weights) of various weights for top calibration. The set is complete and ready to play right after unpacking.

Advantages and disadvantages of neodymium magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose strength, even over approximately 10 years – the reduction in lifting capacity is only ~1% (according to tests),
  • They have excellent resistance to magnetism drop due to opposing magnetic fields,
  • In other words, due to the shiny layer of nickel, the element gains a professional look,
  • Magnetic induction on the working part of the magnet remains very high,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of precise creating as well as modifying to specific applications,
  • Wide application in modern industrial fields – they are used in hard drives, electric motors, medical devices, as well as technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets: application proposals
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and 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 start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited possibility of producing nuts in the magnet and complex forms - preferred is cover - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can complicate diagnosis medical when they are in the body.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum magnetic pulling forcewhat it depends on?

The specified lifting capacity concerns the limit force, measured under laboratory conditions, specifically:
  • with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension equals approx. 10 mm
  • characterized by lack of roughness
  • with zero gap (no paint)
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Real force is influenced by working environment parameters, including (from most important):
  • Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Steel thickness – insufficiently thick steel does not close the flux, causing part of the power to be wasted to the other side.
  • Material composition – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Thermal environment – temperature increase results in weakening of force. Check the thermal limit for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of neodymium magnets
Magnets are brittle

Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Mechanical processing

Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Operating temperature

Control the heat. Heating the magnet to high heat will ruin its properties and strength.

Data carriers

Do not bring magnets near a purse, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness happens, immediately stop working with magnets and use protective gear.

Bodily injuries

Large magnets can break fingers instantly. Under no circumstances place your hand betwixt two attracting surfaces.

Conscious usage

Handle magnets with awareness. Their powerful strength can shock even professionals. Stay alert and respect their force.

Threat to navigation

Remember: rare earth magnets produce a field that interferes with precision electronics. Keep a separation from your phone, device, and navigation systems.

Keep away from children

Neodymium magnets are not toys. Accidental ingestion of a few magnets may result in them attracting across intestines, which poses a critical condition and necessitates urgent medical intervention.

Warning for heart patients

For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Safety First! Want to know more? Read our article: Are neodymium magnets dangerous?