316L stainless steel is an extra low carbon version of 316, and while both grades are very similar, 316 “L” is ideal for welding applications, as it is less susceptible to weld decay. The low carbon content decreases carbide precipitation that sensitizes the grain boundaries of welds in these materials.

Both 316 and 316L offer high creep strength, stress-to-rupture and tensile strength at elevated temperatures, as well as excellent corrosion resistance and strength properties. These grades are well suited for fabricated or formed applications such as found in refining equipment, surgical tools, fasteners, pulp and paper processing equipment, and pharmaceutical processing. Annealing, or heat treating, can be done between 1,900 – 2,100°F (1,038 to 1,149°C), and is commonly used to restore corrosion resistance in heavily welded 316 materials.