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Neodymium magnets – strongest on the market

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Professional solutions for fixing non-invasive. Threaded mounts (M8, M10, M12) guarantee quick improvement of work on production halls. Perfect for mounting lamps, detectors and ads.

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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

technical parameters »

26.64 ZŁ with VAT / pcs + price for transport

21.66 ZŁ net + 23% VAT / pcs

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Physical properties - 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
Engineering data and GPSR
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
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
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A hook magnet is an ideal solution for quick mounting of banners, signs, and markings on steel ceiling structures. You can use them to organize wires, hang tools, or clothes on metal racks.
The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.
The nominal capacity (e.g., 43.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).
Thanks to the metal cover, attraction force is concentrated, which significantly increases capacity compared to a bare magnet. 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. If you are looking for an outdoor hanger, choose a model in rubberized or plastic housing, which is tight.

Advantages as well as disadvantages of rare earth magnets.

Strengths

Besides their exceptional pulling force, neodymium magnets offer the following advantages:
  • They retain attractive force for almost ten years – the loss is just ~1% (according to analyses),
  • They retain their magnetic properties even under close interference source,
  • Thanks to the shimmering finish, the surface of nickel, gold, or silver-plated gives an modern appearance,
  • Neodymium magnets create maximum magnetic induction on a small area, which allows for strong attraction,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • In view of the option of accurate molding and adaptation to custom solutions, NdFeB magnets can be produced in a variety of forms and dimensions, which increases their versatility,
  • Fundamental importance in high-tech industry – they find application in HDD drives, electric drive systems, medical devices, and multitasking production systems.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Weaknesses

Drawbacks and weaknesses of neodymium magnets and ways of using them
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. 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
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited ability of making threads in the magnet and complicated forms - recommended is a housing - magnet mounting.
  • Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

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

The force parameter is a theoretical maximum value conducted under the following configuration:
  • on a block made of mild steel, optimally conducting the magnetic flux
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with an ideally smooth contact surface
  • without the slightest insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in stable room temperature

Practical aspects of lifting capacity – factors

Effective lifting capacity is influenced by working environment parameters, mainly (from most important):
  • Air gap (betwixt the magnet and the plate), since even a very small distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
  • Direction of force – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets
Powerful field

Use magnets consciously. Their huge power can shock even professionals. Be vigilant and do not underestimate their power.

Mechanical processing

Drilling and cutting of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Nickel allergy

Studies show that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or opt for coated magnets.

Impact on smartphones

A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Keep magnets near a smartphone to avoid breaking the sensors.

Fragile material

NdFeB magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets leads to them shattering into small pieces.

Warning for heart patients

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Data carriers

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Bone fractures

Pinching hazard: The attraction force is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Swallowing risk

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from children and animals.

Demagnetization risk

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. This process is irreversible.

Safety First! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98