A super alloy is an alloy that exhibits excellent mechanical strength and resistance to creep (tendency for solids to slowly move or deform under stress) at high temperatures; good surface stability; and corrosion and oxidation resistance. Heat resistant super alloys (HRSA) can be divided into four material groups; nickel-based, iron-based, cobalt-based and titanium alloys. Titanium can be pure or with alpha and beta structures. The machinability of both HRSA and titanium is poor, especially in aged conditions, which impose particular demands on the cutting tools.