Fatigue Properties of Galvanized Steel and Hot Rolled Steel Before and After Exposure to Salt Spray

This paper outlines the advantage of using galvanized steel to protect critical structural members from corrosion. For example, the mean 2 X 10⁶ cycle fatigue strength for 0.070 and 0.085 in thick galvanized steel was approximately 26,000 psi. It was unaffected by exposure to 96 h of salt spray before testing. Comparable fatigue strength for 0.095 in thick hot rolled steel of nearly equivalent chemistry was about 28,000 psi. Exposed to 96 h of salt spray, it dropped to about 25,400 psi.