Abstract: A good weld from spot welding mechanism is what most of the manufacturers preferred and desired for mechanical assemblies in their systems. The robustness is mainly relies on the joining mechanism of mechanical parts; especially when combining two different materials and therefore this paper analyzes the spot weld growth on 302 austenitic stainless steel and low carbon steel of 1mm of thickness. In this experiment we have welded sixty three (63) samples; especially for tensile strength test (45); for hardness test (9) and the rest for metallurgical studies. The basic controlling parameters that varied throughout the experiments were welding current and the welding time while electrode force and tips were kept unchanged. The weldment was developed from lower range of controlling parameters to higher range. However this experiment was limited to the basic parametric variation to find optimum parametric set up for 1mm base metals. The test result shows close relationship in the parametric changes with respect to its strength as how other researchers found in mixed steel spot welds.