For this application, I would recommend Inconel 718 – it is a nickel-chromium alloy with great strength and resistance to extreme temperatures (up to 700°C). It is also corrosion resistant. So this is a good material for components like turbine blades, casing and other critical engine parts. It can be used in various manufacturing processes, like machining, welding and additive manufacturing. Hope this helps!

Stainless steel 316L can also be an alternative to Inconel 718, with a melting point of 1,400°C (1,430°C for Inconel). Stainless steel has a lower tensile strength though. If you are considering 3D printing, you can check this article that compares the best heat-resistant materials (both metals and plastics) https://xometry.pro/en-eu/articles/3d-printing-materials-heat-resistant/