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UMH 32x8x46 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310427

GTIN/EAN: 5906301814566

Diameter Ø

32 mm [±1 mm]

Height

46 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

53 g

Magnetization Direction

↑ axial

Load capacity

38.00 kg / 372.65 N

Coating

[NiCuNi] Nickel

view parameters »

22.14 ZŁ with VAT / pcs + price for transport

18.00 ZŁ net + 23% VAT / pcs

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Force and appearance of a neodymium magnet can be verified on our force calculator.

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Technical - UMH 32x8x46 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 32x8x46 [M6] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310427
GTIN/EAN 5906301814566
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 32 mm [±1 mm]
Height 46 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 53 g
Magnetization Direction ↑ axial
Load capacity ~ ? 38.00 kg / 372.65 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 32x8x46 [M6] / N38 - magnetic holder with hook
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

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
Technical and environmental data
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
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: 310427-2026
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A hook magnet is an ideal solution for quick mounting of banners, signs, and markings on steel ceiling structures. It is a universal hanger that you can move to another place at any time without a trace.
Yes, the hook is an element screwed into a bushing with a metric thread (e.g., M4, M5, M6 - check description). This gives huge application flexibility and allows adapting the holder to current needs.
The nominal capacity (e.g., 38.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. If you hang the magnet on a wall, the real capacity is approx. 20-30% of the nominal value.
The steel housing (cup) shields the magnetic field, directing all its power downwards, onto the contact surface. Additionally, steel protects the brittle magnet from cracking upon hitting the ceiling or beam.
In the bathroom or kitchen, they will work perfectly, provided they are not directly splashed with water. In home and office conditions, they will serve for many years without signs of wear.

Strengths and weaknesses of rare earth magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have constant strength, and over more than 10 years their performance decreases symbolically – ~1% (in testing),
  • They have excellent resistance to magnetism drop when exposed to external fields,
  • A magnet with a metallic nickel surface is more attractive,
  • Magnetic induction on the top side of the magnet is impressive,
  • 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...
  • Thanks to flexibility in forming and the capacity to modify to individual projects,
  • Versatile presence in high-tech industry – they are commonly used in hard drives, motor assemblies, medical devices, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in small systems

Disadvantages

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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 secure oxidation and corrosion.
  • Limited possibility of creating nuts in the magnet and complicated shapes - preferred is cover - mounting mechanism.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Additionally, small elements of these magnets are able to be problematic in diagnostics medical after entering 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?

The force parameter is a measurement result conducted under specific, ideal conditions:
  • on a base made of structural steel, effectively closing the magnetic field
  • whose thickness reaches at least 10 mm
  • characterized by smoothness
  • without the slightest insulating layer between the magnet and steel
  • under perpendicular force direction (90-degree angle)
  • in neutral thermal conditions

Magnet lifting force in use – key factors

In real-world applications, the actual lifting capacity results from a number of factors, presented from most significant:
  • Distance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
  • Steel thickness – too thin sheet does not close the flux, causing part of the flux to be escaped into the air.
  • Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
  • Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal environment – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet and the plate reduces the load capacity.

H&S for magnets
Serious injuries

Large magnets can smash fingers instantly. Do not put your hand betwixt two strong magnets.

Nickel coating and allergies

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid direct skin contact and select encased magnets.

Pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

GPS Danger

Note: rare earth magnets produce a field that disrupts precision electronics. Keep a safe distance from your mobile, tablet, and navigation systems.

Data carriers

Device Safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Do not overheat magnets

Control the heat. Heating the magnet to high heat will destroy its magnetic structure and strength.

Safe operation

Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and respect their force.

Risk of cracking

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Keep away from children

Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep away from kids and pets.

Fire warning

Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

Important! Want to know more? Check our post: Why are neodymium magnets dangerous?