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UMH 36x8x46 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310428

GTIN/EAN: 5906301814573

5.00

Diameter Ø

36 mm [±1 mm]

Height

46 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

65 g

Magnetization Direction

↑ axial

Load capacity

43.00 kg / 421.69 N

Coating

[NiCuNi] Nickel

check properties »

26.64 ZŁ with VAT / pcs + price for transport

21.66 ZŁ net + 23% VAT / pcs

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Product card - UMH 36x8x46 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 36x8x46 [M6] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310428
GTIN/EAN 5906301814573
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 36 mm [±1 mm]
Height 46 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 65 g
Magnetization Direction ↑ axial
Load capacity ~ ? 43.00 kg / 421.69 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 36x8x46 [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%
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: 310428-2026
Magnet Unit Converter
Force (pull)
Magnetic Induction
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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.
The tip is fully demountable - you can unscrew the hook and screw in a bolt, eyelet, or other element in its place. Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.
The given value defines the maximum load when suspended under a thick, horizontal ceiling beam. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).
The cup acts as a magnetic armature, intensifying the neodymium action and increasing efficiency. The housing ensures mechanical durability, which is important in industrial and assembly conditions.
For outdoor use (in rain), metal hangers may eventually develop a rusty coating over time. In home and office conditions, they will serve for many years without signs of wear.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They have stable power, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
  • Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
  • Thanks to the smooth finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an visually attractive appearance,
  • Neodymium magnets create maximum magnetic induction on a small area, which allows for strong attraction,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
  • Possibility of custom creating as well as optimizing to specific applications,
  • Huge importance in innovative solutions – they are used in computer drives, drive modules, diagnostic systems, also complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
  • Limited ability of making nuts in the magnet and complex forms - preferred is a housing - magnet mounting.
  • Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these devices can complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

The force parameter is a result of laboratory testing conducted under specific, ideal conditions:
  • with the application of a yoke made of special test steel, guaranteeing maximum field concentration
  • whose transverse dimension is min. 10 mm
  • with an polished contact surface
  • under conditions of no distance (surface-to-surface)
  • during detachment in a direction perpendicular to the plane
  • at room temperature

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the application force will differ subject to the following factors, in order of importance:
  • Gap (between the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be wasted into the air.
  • Plate material – mild steel gives the best results. Higher carbon content reduce magnetic permeability and lifting capacity.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Warnings
GPS Danger

Remember: neodymium magnets produce a field that interferes with sensitive sensors. Keep a separation from your phone, device, and navigation systems.

Fragile material

Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Product not for children

Only for adults. Small elements can be swallowed, leading to serious injuries. Keep out of reach of children and animals.

Hand protection

Big blocks can smash fingers in a fraction of a second. Never put your hand between two attracting surfaces.

Safe operation

Handle with care. Rare earth magnets act from a distance and connect with huge force, often quicker than you can react.

Safe distance

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Operating temperature

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and strength.

Warning for heart patients

Warning for patients: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Sensitization to coating

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, cease working with magnets and use protective gear.

Fire risk

Fire hazard: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.

Important! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98