Neodymium magnets: power you're looking for

Need strong magnetic field? We have in stock wide selection of disc, cylindrical and ring magnets. They are ideal for home use, workshop and model making. Check our offer with fast shipping.

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Magnet fishing sets (hobbyists)

Begin your hobby with treasure salvaging! Our specialized grips (F200, F400) provide grip certainty and immense power. Stainless steel construction and reinforced ropes are reliable in challenging water conditions.

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Magnetic mounting systems

Proven solutions for fixing without drilling. Threaded grips (external or internal) provide quick improvement of work on production halls. Perfect for mounting lighting, sensors and banners.

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AM Haczyk M5 - magnetic accessories

magnetic accessories

Catalog no 080506

Coating

[NiCuNi] Nickel

1.230 with VAT / pcs + price for transport

1.000 ZŁ net + 23% VAT / pcs

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Parameters as well as shape of neodymium magnets can be analyzed on our power calculator.

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Detailed specification - AM Haczyk M5 - magnetic accessories

Specification / characteristics - AM Haczyk M5 - magnetic accessories

properties
properties values
Cat. no. 080506
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

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 specification and ecology
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: 080506-2026
Magnet Unit Converter
Magnet pull force

Magnetic Induction

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In this category, we offer a wide selection of complementary elements for magnetic holders. We offer, among others: various types of hooks, eye bolts (shackles), mounting plates for magnets, and rubber anti-slip caps. These are essential elements to fully utilize the potential of neodymium magnets in practice.
Steel plates (washers) allow the use of magnets on non-magnetic surfaces. After fixing the plate, you gain a place where the magnet will hold just like on a fridge. This enables creating magnetic closures anywhere in the home and office.
Elements are standardized according to metric standard, facilitating selection. Before purchase, check the thread size in your magnetic holder (it is given in the description). We offer accessories made of galvanized or stainless steel, resistant to corrosion.
Covers made of thin rubber protect delicate surfaces from scratching by a metal magnet. 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 fulfill orders for any quantities, from one piece to thousands of items. Contact us to get a wholesale offer for hooks and holders. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Pros and cons of rare earth magnets.

Strengths

Besides their tremendous field intensity, neodymium magnets offer the following advantages:
  • They do not lose strength, even after approximately 10 years – the reduction in strength is only ~1% (theoretically),
  • They maintain their magnetic properties even under strong external field,
  • A magnet with a smooth silver surface looks better,
  • Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
  • Possibility of custom creating as well as optimizing to precise needs,
  • Wide application in innovative solutions – they are commonly used in magnetic memories, electromotive mechanisms, advanced medical instruments, also other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

What to avoid - cons of neodymium magnets and proposals for their use:
  • 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 secures them against impacts but also raises their durability
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited ability of making threads in the magnet and complex forms - preferred is cover - mounting mechanism.
  • Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these products are able to complicate diagnosis medical when they are in the body.
  • Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat contributes to it?

The force parameter is a measurement result performed under specific, ideal conditions:
  • with the application of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
  • with a cross-section no less than 10 mm
  • with a surface free of scratches
  • with total lack of distance (without paint)
  • under vertical application of breakaway force (90-degree angle)
  • in temp. approx. 20°C

Lifting capacity in real conditions – factors

During everyday use, the real power results from a number of factors, ranked from the most important:
  • Distance – the presence of any layer (rust, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material composition – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Temperature – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the holding force.

Safety rules for work with neodymium magnets
Swallowing risk

Strictly keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.

Eye protection

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Do not underestimate power

Use magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their power.

ICD Warning

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Physical harm

Protect your hands. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Phone sensors

Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Flammability

Powder generated during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness appears, cease working with magnets and use protective gear.

Safe distance

Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Demagnetization risk

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its properties and strength.

Warning! Details about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98