4 min read

The Ultimate Guide to 308L Filler Wire: Everything You Need to Know

308L filler wire is a versatile and widely-used welding material that falls under the category of austenitic stainless steel. Its name is derived from the American Welding Society (AWS) classification, where “308” represents the alloy’s composition, and “L” stands for low carbon.

The 308L filler wire is primarily composed of chromium and nickel, which makes it highly resistant to corrosion and oxidation. It also contains a minimal amount of carbon (usually below 0.03%), which reduces the risk of carbide precipitation and subsequent corrosion in the heat-affected zone.