304 stainless steel is a versatile stainless steel, it is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts. 304L is a low carbon content of 304 stainless variants, which need welding applications. Lower carbon content makes it close to the weld heat affected zone in the to minimize carbide precipitation, and carbide precipitation may result in some environments, stainless steel intergranular corrosion (weld erosion).