What distinguishes intermediate steel from mild steel?

Intermediate steel is characterized by higher yield strength compared to mild steel, which makes it suitable for applications that require enhanced structural integrity. This increased strength often comes at the cost of ductility, which is the material's ability to deform without breaking. As a result, intermediate steel can be more sensitive to excessive heat during welding and heat treatment processes. During these processes, it's crucial to manage the heat input to prevent undesirable changes in the material properties that could lead to issues such as warping or brittleness.

Mild steel, on the other hand, is known for its lower yield strength and greater ductility, which makes it easier to work with in forming and fabrication processes. The distinctions in yield strength and heat sensitivity are significant factors when choosing materials for specific repair applications, especially in the context of structural body repair where the integrity of the material is paramount.