Cobalt-based superalloys are a class of superalloys containing 50-60% cobalt, 20-30% chromium, up to 20% nickel, 5-10% tungsten and a low amount of molybdenum as the main elements. Each alloying element has a purpose for adding it. Chromium; nickel for strength and high oxidation resistance under high temperature conditions; to improve fracture toughness, tungsten; It is added for solid solution strength. Cobalt-based super alloys provide the opportunity to work at higher temperatures compared to other classes due to the alloying elements they contain. In addition, long working life at high temperatures has also been improved with cobalt-based super alloys.