In automotive exhaust flexible coupling applications commonly used stainless steels have failed by hot salt corrosion, stress corrosion cracking, pitting and fatigue with associated sensitization resulting from the high temperature exposure. This paper describes the development of an alloy designed specifically to overcome these failure mechanisms while maintaining good weldability and thermal stability.
Key Words: automotive, exhaust, corrosion, fatigue, stress corrosion cracking, pitting, oxidation, hot, salt, high temperature, alloy 864