In this study, the usability of ulexite and pinus brutia cone dust (PBCD) in friction composites were investigated experimentally. Polymer-matrix composite (PMC) samples were manufactured by powder metallurgy method. Produced samples with the same contents were compared with those of heat-treated. A special design friction tester was used to determine friction properties such as wear rate and friction coefficient. The results showed that ulexite and PBCD can be used as filler material in friction composites. The results also indicated that heat treatment improved the properties of the samples.