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AM Magnetyczny zbieracz / N38 - magnetic accessories

magnetic accessories

Catalog no 080499

Magnetization Direction

↑ axial

Coating

[NiCuNi] Nickel

see properties »

1.230 ZŁ with VAT / pcs + price for transport

1.000 ZŁ net + 23% VAT / pcs

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Technical specification - AM Magnetyczny zbieracz / N38 - magnetic accessories

Specification / characteristics - AM Magnetyczny zbieracz / N38 - magnetic accessories

properties
properties values
Cat. no. 080499
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Magnetization Direction ↑ axial
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics AM Magnetyczny zbieracz / N38 - magnetic accessories
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: 080499-2026
Measurement Calculator
Pulling force
Magnetic Field
Simply complete one field, and the converter fill in everything else automatically.

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You will find essential equipment here for building professional mounting systems. We offer, among others: open and closed hooks, eye bolts (shackles), mounting plates for magnets, and rubber covers. Thanks to these additions, you can adapt any magnetic holder to your individual needs.
The plate serves as a base (armature) to which the magnet will attach. Mounting consists of gluing or screwing the washer to a non-magnetic substrate. This enables creating magnetic closures anywhere in the home and office.
Our accessories are compatible with holders having standard metric threads (ISO). It is important to select a hook or screw with the same thread diameter as the socket in the magnet. We offer accessories made of galvanized or stainless steel, resistant to corrosion.
Rubber caps perform a protective function (against scratches) and anti-slip. They are ideal when you want to attach a magnet to car paint, a fridge, or furniture. An additional layer of rubber weakens attraction slightly but drastically increases shear force (sliding resistance).
We supply manufacturing companies, advertising agencies, and workshops with necessary mounting accessories. For larger orders, we offer attractive discounts and individual quotes. We guarantee continuity of supply and high quality of fasteners.

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Apart from their notable power, neodymium magnets have these key benefits:
  • They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
  • Neodymium magnets are highly resistant to demagnetization caused by external magnetic fields,
  • A magnet with a smooth nickel surface looks better,
  • Neodymium magnets create maximum magnetic induction on a contact point, which allows for strong attraction,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to flexibility in shaping and the ability to adapt to complex applications,
  • Universal use in modern technologies – they are used in hard drives, electric motors, medical equipment, as well as multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Cons of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 possibility of producing threads in the magnet and complicated shapes - recommended is cover - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

Magnet power is the result of a measurement for optimal configuration, taking into account:
  • with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
  • with a thickness no less than 10 mm
  • characterized by even structure
  • without the slightest clearance between the magnet and steel
  • under vertical force direction (90-degree angle)
  • in neutral thermal conditions

Lifting capacity in practice – influencing factors

Real force is affected by specific conditions, mainly (from most important):
  • Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy admixtures reduce magnetic properties and holding force.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Warnings
Fire warning

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Danger to pacemakers

Individuals with a pacemaker have to maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.

Safe operation

Before starting, check safety instructions. Sudden snapping can break the magnet or injure your hand. Be predictive.

Bodily injuries

Risk of injury: The attraction force is so great that it can result in hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Adults only

Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep away from kids and pets.

Risk of cracking

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

Precision electronics

An intense magnetic field interferes with the operation of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Avoid contact if allergic

Certain individuals have a contact allergy to nickel, which is the common plating for neodymium magnets. Extended handling can result in dermatitis. We strongly advise wear protective gloves.

Cards and drives

Intense magnetic fields can erase data on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Demagnetization risk

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Attention! Details about hazards in the article: Safety of working with magnets.