WM 34.5x24.3x17 / N38 - magnetic hanger
magnetic hanger
Catalog no 240215
GTIN/EAN: 5906301814382
length
34.5 mm [±1 mm]
Width
24.3 mm [±1 mm]
Height
17 mm [±1 mm]
Weight
9 g
Coating
[NiCuNi] Nickel
4.99 ZŁ with VAT / pcs + price for transport
4.06 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - WM 34.5x24.3x17 / N38 - magnetic hanger
Specification / characteristics - WM 34.5x24.3x17 / N38 - magnetic hanger
| properties | values |
|---|---|
| Cat. no. | 240215 |
| GTIN/EAN | 5906301814382 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 34.5 mm [±1 mm] |
| Width | 24.3 mm [±1 mm] |
| Height | 17 mm [±1 mm] |
| Weight | 9 g |
| 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 | 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 |
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% |
Sustainability
| 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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Strengths and weaknesses of neodymium magnets.
Strengths
- They have stable power, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets prove to be remarkably resistant to demagnetization caused by external magnetic fields,
- A magnet with a shiny gold surface looks better,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to modularity in shaping and the ability to customize to unusual requirements,
- Key role in modern industrial fields – they are used in magnetic memories, brushless drives, precision medical tools, also complex engineering applications.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- 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
- 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.
- Due to limitations in creating nuts and complex shapes in magnets, we recommend using a housing - magnetic holder.
- Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small components of these devices can disrupt the diagnostic process medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum lifting force for a neodymium magnet – what contributes to it?
- using a base made of high-permeability steel, serving as a circuit closing element
- whose transverse dimension reaches at least 10 mm
- with a surface free of scratches
- without any insulating layer between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- in neutral thermal conditions
Lifting capacity in real conditions – factors
- Distance – existence of any layer (paint, dirt, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick steel does not accept the full field, causing part of the power to be escaped into the air.
- Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet’s surface and the plate lowers the holding force.
H&S for magnets
GPS and phone interference
A strong magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Keep magnets near a device to avoid damaging the sensors.
Cards and drives
Equipment safety: Strong magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, timepieces).
Handling rules
Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.
Fragile material
Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them shattering into shards.
Power loss in heat
Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.
Medical implants
Warning for patients: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.
Allergic reactions
Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and select coated magnets.
Bodily injuries
Big blocks can crush fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.
Fire risk
Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.
Product not for children
Product intended for adults. Tiny parts pose a choking risk, causing intestinal necrosis. Store away from children and animals.
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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