Steel-ceramic-composites offer a high potential as protective layers of mechanically and abrasively high loaded machine parts. The machining of steel-ceramic-composites is a high challenge for the process design due to the very different material properties of the brittle ceramic particles, embedded in the ductile steel matrix. Both materials have to be machined in ductile mode simultaneously to gain high surface qualities. Thus, the material separation mechanisms have to be understood for an adequate process design. In this paper, a new process characteristic is introduced that describes the influence of the grinding process settings on the process forces and workpiece surface roughness in grinding steel-ceramic-composites.