WEDM Machineability Characteristics of Different AISI Grade Steels

Wire Electrical Discharge Machining (WEDM) is a non-traditional machining process designed for cutting intricate shapes and profiles in electrically conductive materials with any hardness. The material’s physical and thermal properties significantly influence the product quality and WEDM performance. This technique is widely employed in multiple industries for producing complex, high-precision cuts in materials such as stainless steel, tool steel, high-speed steel, and specialty alloy steels. This study investigates the impact of WEDM process parameters on material removal rate (MRR) and surface roughness (Ra) in various AISI steels, including SS304, 316, 3Cr2W8V, HSSM42, and 18Ni(300). The analysis was conducted to study significant parametric effect using a single-factor variation approach. The primary focus is to evaluate how alloying elements in steels influence MRR and Ra. The results reveal that MRR and surface roughness are not only influenced by process variable but also changed with alloying element in the steel like Cr, Ni, Mo, Co, and W. The study also underscores the critical influence of alloying elements on WEDM performance, highlighting their essential role in achieving optimized machining outcomes.