Mild steel also called plain-carbon steel is the most common form of steel because its price is relatively low while it provides material properties that are acceptable for many applications, Mild steel has a relatively low tensile strength and malleable; surface hardness can be increased through carburizing. This material is also electrically conductive, easily available and flexible in design. It can be machined by using many non-conventional methods like laser cutting, water jet machining and plasma arc machining. Among them Plasma arc machining is a widely used industrial process due to...