[en] Abrassive wear is a complex mechanical process with specific characteristics, dependent on the bodies velocities and load, the quality of contact surfaces, the mechanical properties of the superficial layers, lubrication etc. During the friction of the bodies in contact, the mechanical properties and the micro-topography of superficial layers change, most of the time irrecoverable, leading to the shut-down of the technical system they are part of. The present paper proposes a theoretical and experimental analysis of the abrassive wear behaviour of a coupling made of steel/cast iron as well as the detection of the wear trace dependent on the inclination angle of the harder material asperities (penetrator). (paper)