Filler Metal Alloy 65 is used for gas-tungsten-arc welding of INCOLOY alloy 825 and other nickel-iron-chromium-molybdenum-copper alloys of similar composition. The weld metal is highly corrosion resistant, particularly in reducing chemicals such as sulphuric and phosphoric acids. Filler Metal Alloy 65 can also be used for depositing overlays on carbon and low alloys steels.