Abstract: In this research paper the effect of friction welding parameters such as rotational speed, friction time, forging pressure and friction pressure on tensile strength of a joint between SS316 and EN8 is experimentally investigated. A partial factorial design of experiment based on Taguchi analysis is conducted to obtain the response measurements. Analysis of variance ANOVA and main effects plot is used to determine the significant parameters and set the optimal level for each parameter. Based on the experimentally determined optimal parameters a confirmation experiment is conducted. These results will be useful to the industry in selecting optimal process parameters while preparing a friction welded joint of SS316 with EN-8.