<p>In this study, the potential of using metallurgical slags as alternative fillers in the development of automotive friction composites was investigated. Barite, blast furnace slag, copper slag and aluminum slag were preferred as fillers. A total of 13 samples, including a 40% barite reference, were produced via the conventional powder metallurgy method, with slag types substituting barite at 10, 20, 30, and 40%. The specimens were evaluated in terms of their tribological, physical and chemical properties. As a result of the tests, a significant decrease in the average friction coefficient, hardness and density values was observed with increasing blast furnace slag content. The lowest average friction coefficient, 0.265, was obtained in the sample containing 40% blast furnace slag. With the addition of 30% copper slag, a friction performance close to that of the reference sample was achieved. As a result of examining the time-dependent friction coefficient curves, it was determined that the sample containing 20% aluminum slag exhibited more stable friction behavior. Also, in this sample, a 9.42% increase in the average friction coefficient and a 2.10% increase in friction stability were obtained. For the quantitative analysis of the tribological performance, the average friction coefficient, friction stability, specific wear rate and disk temperature increase parameters were selected as evaluation criteria on the basis of the friction data obtained. The results show that composites containing copper and aluminum slag offer more balanced and preferable alternatives in terms of performance.</p>