This study examined the hardness and impact strength of arc-welded C1035 medium carbon steel at varying welding current, electrode size, and constant welding voltage (230V). The chemical constituents and the microstructure of the parent metal and welded joints were analyzed using x-ray fluorescence and optical microscope (OM) respectively. The results of the analysis indicate that the parent metal has better hardness and impact strength compared to the welded joints. Among the welded joints prepared, joint prepared using gauge 12 E6013 (2.5 mm) electrode at welding current of 173 A showed better hardness (77.3 RHN) while the joint prepared using gauge 10 E6013 (3.25 mm) at welding current of 173 A showed better impact strength (42.5 J). The change in hardness and impact strength of the parent metal was guaranteed by the microstructural evolution that accompanied the welding process.