The current article discusses the corrosion behavior of carbon steel SAE1006 with a thickness of 1 mm that was welded by resistance spot welding under various welding conditions. Welding current and time have been adjusted, whereas other welding characteristics have remained constant. The welding process was carried out with a welding current of 7, 7.5, and 8.2 kA and a welding time of 15, 25, and 35 cycles. Following the welding step, every joint was tested for corrosion in a 1 M H2SO4 solution using three-electrode polarization resistance methods. The outcome reveals that as the welding current and welding time raised, the corrosion resistance reduced because the welding heat input to the weld nugget zone decreased. As the microstructure of the weld nugget zone altered, the welding heat input was proven to have a more significant influence on the corrosion rate.