Manufacturer Part Number: ER308L. Low carbon ER308L composition for corrosion resistance. 💡Why Choose Stainless Steel TIG Welding Rods?. 🎯Compatibility: TIG welding of stainless steels including AISI 201, 202, 301, 302, 304, 304L, 305, 308, 308L, 321, 347.