AISI F22

F22 is a low-alloy steel known for its high strength and good toughness at elevated temperatures. It is commonly used in power generation and petrochemical applications, particularly for pressure vessels and piping. Its good weldability and resistance to hydrogen damage make it suitable for a variety of high-pressure applications.


Very good weldability, and so may be readily welded to itself or weld inlayed. The grade does require a post weld heat treatment at 620°C min in order to meet sour service (NACE MR0175/ ISO 15156) requirements. The good weldability of the grade means that it is frequently used where welding is a requirement, such as for weld clad or inlaid components.

Equivalent/Similar Standards