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
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Technical details - 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Pros as well as cons of rare earth magnets.
Advantages
- They retain attractive force for almost 10 years – the loss is just ~1% (based on simulations),
- They retain their magnetic properties even under close interference source,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to look better,
- Magnetic induction on the working layer of the magnet remains impressive,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to flexibility in constructing and the capacity to customize to client solutions,
- Huge importance in high-tech industry – they are used in hard drives, electromotive mechanisms, precision medical tools, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions
Limitations
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also increases their durability
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of making threads in the magnet and complex forms - preferred is cover - mounting mechanism.
- Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child safety. Additionally, small elements of these products can disrupt the diagnostic process medical in case of swallowing.
- Due to complex production process, their price is relatively high,
Lifting parameters
Highest magnetic holding force – what it depends on?
- with the contact of a sheet made of special test steel, ensuring full magnetic saturation
- whose transverse dimension equals approx. 10 mm
- with a surface free of scratches
- without the slightest air gap between the magnet and steel
- during detachment in a direction perpendicular to the mounting surface
- at temperature room level
Lifting capacity in practice – influencing factors
- Clearance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
- Load vector – highest force is available only during perpendicular pulling. The shear force of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Heat – 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 was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Warnings
Keep away from electronics
A strong magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.
Nickel allergy
Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, refrain from direct skin contact and choose versions in plastic housing.
Heat sensitivity
Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Hand protection
Big blocks can smash fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.
Protect data
Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, medical aids, mechanical watches).
Fragile material
Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Do not underestimate power
Be careful. Rare earth magnets act from a long distance and connect with huge force, often faster than you can react.
Health Danger
Warning for patients: Powerful magnets affect medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.
Adults only
Adult use only. Small elements can be swallowed, causing intestinal necrosis. Keep away from children and animals.
Machining danger
Dust created during grinding of magnets is flammable. 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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