Filler Metal Alloy G-30 is used for submerged arc welding of G-30® alloy. Alloy G-30 is also used for welding 6-7 molybdenum-bearing stainless steels and duplex grades including 2507. The alloy has many applications in phosphoric and nitric acid production, as well as, pulp and paper fabrications. Alloy G-30 is considered an overmatching filler metal for the 6-7 molybdenum bearing stainless grades and also the duplex grades, including 2507