Fatigue strength of ST37-2 steel plate

ST37-2 steel plate is a low carbon steel grade commonly used in structural applications. The fatigue strength of ST37-2 steel plate depends on several factors including the grain size, surface finish, loading conditions, and environment.

The fatigue strength of ST37-2 steel plate can be determined by conducting fatigue tests under different loading conditions. The S-N curve, which relates stress amplitude to the number of cycles to failure, can be used to determine the fatigue limit or endurance limit of the material.

In general, the fatigue strength of ST37-2 steel plate is relatively low compared to other high-strength steels due to its low carbon content. However, it is still suitable for many structural applications that do not require high fatigue resistance. Surface treatments such as shot peening and polishing can improve the fatigue strength of ST37-2 steel by reducing surface defects and improving surface hardness.

It is important to note that environmental factors such as temperature, humidity, and corrosive media can significantly affect the fatigue strength of ST37-2 steel plate. Therefore, it is necessary to consider the operating environment when designing structures made from this material.