Haynes Hastelloy G-30 description: HASTELLOY G-30 RTW filler metal is used for gas metal arc, gas tungsten arc and submerged arc
welding of G-30 alloy. G-30 alloy 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. G-30 alloy is considered an overmatching filler metal for the 6-7 molybdenum bearing stainless grades and also the duplex grades including 2507.