The aim of this test is to determine the stiffness and friction coefficient of catalytic converter mats under temperature. A materials testing machine with compression platens which can be heated up to 980 °C is used. Two layers of the material, separated by a metal sheet, are placed between the compression platens. The compression platens are then heated and the vertical test load applied; the distance between the compression platens is regulated by means of a laser extensometer with an accuracy of ± 5 µm. 

Using a second test axis, the metal sheet is then moved horizontally between the two layers. The force required for this can be converted to the temperature-specific coefficient of friction.