There are many cutting process available in the market. But, the plasma arc cutting process is one of the most effective process for the cutting of the material. In this research paper, study about the effect of selected plasma cutting parameters such as air pressure, current flow rate, cutting speed and arc gap etc. used and cutting of EN8 (AISI 1040) material. The experiment was done on the 8mm thick plate. In this experiment, the main focus on select the best parameter combination for cutting using material removal rate (MRR), surface roughness (SR) and kerf width (KW).