Avesta 309L is a high alloyed low carbon electrode designed for welding dissimilar joints between stainless and mild or low alloy steels. The electrode is well suited as a buffer layer when overlay welding on mild steels, providing an 18 Cr 8 Ni deposit from the very first layer. Avesta 309L can also be used for welding some high temperature steels, such as 1.48333/ASTM 309S. .
AWS A5.4: E309L-17
EN ISO 3581: E 23 12 L R