Brake pads

Brake pads can contain up to 20 different ingredients; MicaFort and MagniF can be two of the minerals used to produce this part of the braking systems in cars.

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Melissa Bartz

Melissa Bartz

Inside sales / Sales coordination Americas

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LKAB Minerals supply this platy mineral and the iron oxide to different brake pad manufacturers world-wide.

MicaFort Phlogopite mica for brake pads

Phlogopite mica can be one of the mineral fillers used to make brake pads. Because of its platy structure and high thermal resistance, it is very suitable. They decrease the difference between the static and the dynamic coefficient of friction.

Other platy minerals, such as graphite, can do this as well but phlogopite delivers constant performance even under changes in pressure and temperature.

Health and safety benefits

In comparison to many commercially available mica products, MicaFort Phlogopite grades offer a significant health and safety benefit due to their extremely low levels of free respirable silica. This is of particular significance for customers manufacturing products in a dry mixing process where exposure to respirable free silica can lead to serious illness and disease. One of the alternative minerals, quartz, is very abrasive causing additional machine wear and maintenance costs, which LKAB Minerals’ MicaFort does not.

To sum it all up, the technical benefits provided by MicaFort are:

  • high thermal resistance
  • a similar static and dynamic friction coefficients
  • very stable behaviour despite pressure and temperature changes
  • very low crystalline silica <0.1%

MagniF, fine dried powdered magnetite, for brake pads

Another LKAB Minerals’ mineral used in brake pads is MagniF, which is a specially manufactured fine dried magnetite (iron oxide). Other than MicaFort, MagniF is one of the components which homogenizes the friction coefficient and the heat transfer from the pad to the brake disc. MagniF is mainly used for its abrasiveness.

For more technical information on our natural minerals MicaFort or MagniF for brake pad formulations and to understand how you can achieve the best results, please contact our technical experts via the contact box at the top of the page.