Resistance Spot Welding (RSW) is highly demanded and has been developed in the automative industry. The strength of the welded materials is highly dependent on the quality of the weld joint. This research project has the aim of evaluating the weldability of distinct materials under same welding parameters, i.e 3A, 4A and 5A for welding current and 4 cycle 7 cycle and 9 cycle for welding time, ach series with 3 specimens.