Alloy 939 is a high-chromium, cobalt-bearing precipitation-hardened nickel-base powder engineered for laser powder bed fusion of industrial gas turbine hot-section components. Its chemistry is optimized for hot corrosion resistance in turbines operating on low-grade fuels, where type I and type II sulfidation resistance are critical. Used for nozzle vanes, blades, and structural hot-section hardware in power generation applications, alloy 939 delivers a reliable balance of creep strength, oxidation resistance, and environmental durability over extended service intervals.