Comparisons and differences between type 316 and 316L stainless steel

Both 316 stainless steel and 316L stainless steel belong to the AISI 316 stainless steel series, with the main difference being the carbon content. 316L stainless steel is a low-carbon version with lower carbon content, while 316 stainless steel contains slightly higher carbon content. This makes 316L have better weldability and intergranular corrosion resistance.

Due to its low carbon content, 316L stainless steel reduces the precipitation of carbides during welding and lowers the risk of intergranular corrosion. In contrast, standard 316 stainless steel may experience intergranular corrosion under high temperature conditions.

316L stainless steel is commonly used in environments that require higher corrosion resistance, such as chemical, medical, and marine applications, while standard 316 stainless steel is suitable for general engineering projects. In addition, 316L has excellent mechanical properties while maintaining corrosion resistance.

Therefore, when selecting materials suitable for project requirements, it is necessary to consider the differences between 316 and 316L stainless steel, including welding performance, corrosion resistance, and cost-effectiveness.