In order to obtain surfaces with higher tribological properties, research work was performed while keeping in regard the conditions for obtaining surface layers of different Fe–W–Co–C alloys. A paste was made by mixing three parts of powder having 77 wt% WC+13 wt% Co+10 wt% Si with one part of hydroxiethyl-cellulose. The paste was applied on specimens of two grades of steel, mainly 0.4 wt% C, 0.6 wt% Mn, 1 wt% Cr and 1 wt% C, 1 wt% Mn, 1.3 wt% Cr, respectively. The simultaneous melting of added material and surface layer was performed by a CO2 continuous wave laser with the power the beam diameter under argon protection. The specimens were mounted on the numerically controlled x–y–z table and scanned with multiple pass at the rate and the over lapping degree The surface layers were analyzed for phase identification using diffractometry and for hardness to evaluate the load carrying capacity. In addition, metallographic analyses and microhardness measurements were performed by light optical microscopy in the cross section layers. The Fe–W–Co–C alloys, with different alloying contents (0.4–2.0 wt% C, 2–25 wt% W, 0.2–1.6 wt% Co) and Cr23C6, Cr7C3, Fe3C, Fe3W3C, Fe2W, Feα, Feγ, W2C-β, WC, Co2C, resulted in higher hardness and enhanced tribological properties, for different industrial applications.