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Delivery times and availability are indicated by colors. Green means that the item is in stock and will be delivered within 48 hours on business days. Yellow indicates production items that are ready for shipment within 5-10 days. For items marked in orange, the delivery time will be communicated with the order confirmation.

Express delivery is only available within Germany and incurs an additional delivery charge.

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Deliveries to Austria, Switzerland, Liechtenstein, France and other countries within the EU are possible. For deliveries to Switzerland or Liechtenstein, we must charge customs fees of €26.

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You can contact us in writing either via our contact form or via our email address info@magna-c.de. 
You can reach our sales team by phone at +49 70 24 40 57-0. 
Further contact details can also be found on the About us page.

You can order our current product catalog via the Catalog page. The catalog will be sent to you free of charge. We can also include a catalog with your order. Just let us know when placing your order.

Strong magnets should be handled with care, as injuries can result from uncontrolled collisions between magnets. Raw magnets in particular can splinter. We therefore recommend wearing thick safety gloves and safety goggles when handling strong magnets. We generally advise against mechanically processing magnets, as magnets are brittle and flammable chips can form.

High-energy magnets, especially those made of NdFeB, must be stored in a dry place, as this material has a high affinity for oxygen. Unprotected use in damp environments can also lead to corrosion and ultimately to the destruction of the magnets. The galvanic coatings intended to protect NdFeB magnets from corrosion must not be damaged. Even small chips can lead to corrosion. All permanent magnet materials must generally not be exposed to hydrogen atmospheres or radioactive radiation. This will lead to destruction.

Normal, commercially available permanent magnets made of neodymium, ferrite, SamCo, or AlNiCo remain permanently magnetic without external influences. A loss of adhesive force can only be caused by heat, strong impacts, or other magnetic fields. To avoid this, please adhere to the specified maximum operating temperature of the magnet. Protect the magnet from shocks and keep it away from other strong magnetic fields, e.g., from electromagnets.

The magnetic fields surrounding permanent magnets on all sides can affect or even destroy sensitive electronic and mechanical measuring devices. Ensure sufficient distance (at least 1 m) from such devices (including computers, screens, floppy disks, credit cards, etc.). When transporting magnetized materials by air, the applicable IATA regulations must be observed (no magnetic fields may penetrate the packaging - magnetic shielding may be necessary). People with pacemakers should avoid magnetic fields at all costs!

If you have not found the right product for your application or require a custom-made product, please contact us using the contact form, by phone, or by email. We will be happy to advise you on the selection of suitable magnets and can also design specific solutions for you.
Designations such as N40, N42, N52, or N35H and many other combinations are a standardised measure of the quality of the magnetic material used in neodymium magnets. The number indicates how much energy potential a magnet has (maximum adhesive force), while the letter describes its temperature resistance. A neodymium magnet with a grade of N52 has the greatest possible energy potential.

There are basically four types of materials used for permanent magnets: ferrite, AlNiCo, SamCo, and neodymium. All have different magnetic properties in terms of holding force, temperature resistance, and resistance to demagnetization.

Neodymium magnets are generally suitable as “all-rounders” for most common applications. They have the highest adhesive force of all magnet types and a low volume in relation to their holding force. This, combined with their low weight, makes them suitable for compact applications. The coating (nickel plating) also makes neodymium magnets visually appealing. Other types of magnets should be used for temperatures above 80°C.

Ferrite materials are inexpensive and temperature-resistant (200°C), but they are heavier and can also rub off easily. Compared to neodymium, they also have a lower holding force. They can be used outdoors because they do not corrode.
 
AlNiCo materials can be used at very high temperatures (450°C). Due to certain properties, these magnets must usually be rod-shaped. This material also has a weaker holding force than neodymium. 
Samarium cobalt (SamCo) can be used at temperatures of up to 250°C. This material also has higher corrosion resistance. In terms of holding force properties, SamCo is between neodymium and ferrite.

For sufficiently large order quantities, we are also happy to print organizational magnets or apply high-quality doming. Please contact us if you are interested.

Ferrite materials and neodymium materials coated with rubber or PVC are also suitable for outdoor use.

During the manufacturing process of anisotropic magnets and magnetic foils, the magnetization is aligned in a preferred direction. As a result, these magnets have a higher holding force than isotropic magnets without a preferred direction. 

Pretty much all raw and system magnets in our assortment are anisotropic. In addition to anisotropic magnetic sheets, we also offer semi-anisotropic sheets. These have a slightly weaker holding force than anisotropic sheets, but are stronger than isotropic sheets.

The holding forces specified in Newtons correspond to optimal conditions measured in the laboratory. In reality and depending on the application, these are usually not all achievable. The following circumstances have a negative influence on the holding force of the magnets and should be avoided if possible:

  • The magnet's adhesive surface is too thin (the magnetic field cannot penetrate enough material).
  • The adhesive surface consists of pure aluminum, copper, brass, lead gold, silver or the alloy has too low an iron content (the lower the content, the weaker the holding force) 
  • Shearing forces due to vertical mounting, e.g. on a wall (rubber-coated magnets recommended for more friction)
  • Adhesive surface is not clean, corroded or otherwise rough (e.g. due to coating) 
  • Air gap or non-magnetic materials between magnet and adhesive surface (the greater the distance, the weaker the holding force) 
  • Operating temperature too high (the higher the temperature above the specified maximum temperature, the lower the holding force – complete loss of magnetic properties after reaching the respective Curie temperature) 
  • Use of the wrong magnet for the application (pot magnets are more suitable for full contact and flat components due to concentrated field lines)

In suboptimal conditions, we generally recommend using the next stronger magnet. If you are still unsure about which magnet to choose, we will be happy to advise you!
We advise against using magnetic foil as an adhesive surface for magnets. The magnetic foil will lose its magnetization after a while.

The use of another raw magnet as an adhesive partner is redundant with full contact. The attraction between two raw magnets is the same as the attraction between an iron plate and a raw magnet. However, this changes with increasing distance. The attraction between a raw magnet and an iron plate decreases faster than the attraction between two raw magnets.

Pot magnets, on the other hand, have a stronger attraction to iron plates than to raw magnets. Furthermore, two pot magnets cannot be placed precisely on top of each other because they usually have the same pole on the adhesive surface and therefore repel each other.

We recommend adhesive partners made of metal, ideally with a high iron content. If you do not have a metallic adhesive partner in your design, you can supplement it with our adhesive plates.