Stainless Steel Mig ER309L Welding Wire .030" 

309L is of similar composition 309 except the carbon content has been held to a maximum of .03%.

 The lower carbon content reduces the possibility of intergranular corrosion. 309L is preferred over 

309 for cladding over carbon or low alloy steels, as well as for dissimilar joints that undergo 

heat treatment.