Abstract: The present study attempts to optimize machining parameters of Electrochemical grinding while machining alumina-aluminum interpenetrating phase composites by Grey-taguchi methodology. Control parameters like electrolyte concentration, voltage, depth of cut and electrolyte flow rate have been considered to ensure 2 conflicting responses higher material removal rate and lower surface roughness simultaneously by a single parametric combination. The L₉ orthogonal array design is followed for the purpose of experimentation. The well known S/N ratio analysis is performed along with ANOVA to establish the prominent variables that govern the responses separately. Finally, grey relational analysis is performed to optimize multiple performances in which different levels combinations of the factors are ranked based on grey relational grade. Surface roughness is given more importance than the MRR considering basic objective of the process. The analysis reveals that substantial improvement in machining performance takes place following this technique.