Due to their availability and unique features, mild steel and ASS 304 L were used for various applications such as shipbuilding, boiler, aircraft, and automotive industries. This alloy is welded by using method of fusion welding. In addition, the strength of welded joints has touched 60 percent of the strength of base materials. However, it is difficult to maintain quality weld when dissimilar steel is joined. Therefore, the choice of electrode, filler wire and other process parameters like current, voltage, shielding gas, etc. requires proper attention. Solid state joining process, friction welding (FW) process is an ideal process to get sound joint. Three major FW parameters such as rotational speed, friction force, and forging force have been used in this work to optimize FW parameters to maximize strength using statistical methodology such as variance analysis and experimental design methodology. From the results, the joint is welded at a rotational speed of 1000 rpm, forging pressure of 30 MPa and friction pressure of 30 MPa.