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MagniF, produced from the natural iron oxide Magnetite, is the product range especially developed to be used as a functional filler in polymers and coatings.

Your contact for 

Magnus Johansson

Sales Manager Polymers & Coatings
MagniF powder for high density polymers

MagniF is a very pure and fine powder milled from the natural mineral Magnetite mined and processed at our own group resources in the north of Sweden. This relation ensures a long-term, reliable source of consistent quality material.

MagniF from the natural iron oxide Magnetite is ferri-magnetic, greyish-black in colour as well as thermally and electrically conductive.

MagniF applications

  • high density polymers with MagniF

    MagniF in polymer and rubber

    MagniF is a functional filler for polymers and rubbers for a variety of applications, however a major one being the automotive industry. Due to its high solid density of 5.2g/cm³, MagniF is very well suited for making high density compounds. These provide good sound damping characteristics to automotive moulded parts and foams. Applications within the construction industry such as low-noise waste pipes can also take advantage of MagniF filled polymers.

    Another advantage of MagniF's high density within polymer parts is to impart the 'quality-feel' of a product. This way the addition into packaging parts e.g. for cosmetic bottle caps is another application.

    Due to both, the high density and its ferri-magnetism, MagniF makes polymers becoming traceable. This becomes especially important for plastic parts used in the food industry to be able to find parts in the food before the consumer finds them. Particularly for this application LKAB Minerals have received food approval by FDA (US) and EC (Europe) for our MagniF F grades.

  • Magnet paint with MagniF

    MagniF in coatings

    Due to MagniF's inherent ferri-magnetic properties, coatings including MagniF become magnet receptive. Base paints for interior wall application produces a surface that attracts and holds magnets. It can easily be painted over or be covered with wallpaper, due to it's purity and strength, MagniF filled coatings stay magnet receptive.

MagniF standard grades

MagniF has three standard grades:

  • MagniF 10
  • MagniF 25
  • MagniF 50

MagniF 10 and 25 are available as food approved grades for the use in applications with food contact:

  • MagniF 10F
  • MagniF 25F

MagniF packaging

Our MagniF product range is available in paper sacks or big bags. Due to the products conditions no bulk solution is available.

The typical properties of MagniF are:

Physical properties of MagniF

Solid density [g/cm3] 5.2
Bulk density [g/cm3] 1.9
Hardness (Mohs) 6
Moisture content [%] < 0.3
Irregular particle shape with a low aspect ratio  
Rust spot resistance  

Chemical properties of MagniF

Fe3O4 [%] 97 - 99

MagniF mineral origin

LKAB Minerals' Magnetite is mined from our own group resources. The LKAB mines are located in Kiruna and Malmberget in the northern part of Sweden. The iron ore is mined and milled at the mine site and railed to one of two ports - Luleå in Sweden or Narvik in Norway. The ports are part of the LKAB Group logistics structure. LKAB Minerals supply from these ports and from strategic stocks at various locations around the world.

MagniF toxicology

Magnetite is inert, will not rust and does not degrade with time or usage. It is ferri-magnetic and for that reason will be attracted by a magnet. This natural mineral can be recovered, recycled and reused over and over again.

Interested in what MagniF can do for you?

Start by selecting your country to get the right contact person

My name is Magnus Johansson and I'm a MagniF product expert located in United States.

If you are interested in what this product can do for you, please give me a call or send me a message.

Office .
Mobile +1 513 375 2599

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08:00 AM - 17:00 PM

Local time in United States is 09:51 AM (UTC -5)

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