The Ni-Cr-Fe system has a lower Fe content as an Inconel alloy, and a higher Fe content has an Incoloy alloy. Incoloy alloys are actually Fe-Ni-Cr alloys in nickel-based alloys because of their Fe content up to 45%. The casting alloy of Inconel alloy is CY240, and the grade of rolled material is Ineonel 600. Ineoloy alloy rolled grade is Incoloy 800 alloy. In the current corrosion-resistant nickel-based alloys, their application in valve production is second only to Monel alloys.