Avesta P16 description: Characteristics and welding directions AVESTA P16 is a nickel base alloy designed for welding 7Mo-steels such as 1.4565 and similar, offering superior resistance to pitting and crevice corrosion. The consumable is also suitable for the welding of nickel base alloys such as Inconel 625 and Incoloy 825 but also for dissimilar welds between stainless and nickel base alloys to mild steel.