IN 713C offers excellent oxidation resistance, thermal-fatigue performance, and microstructural stability in service. Originally produced as an airmelt alloy under argon protection, IN 713C achieved better and more consistent high-temperature properties with vacuum melting and casting. Qualified to AMS 5391 and OEM specifications including PWA 655 and EMS 55371, IN 713C is selected for uncooled airfoils where dependable cast strength and durability are critical.