Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack, such as pitting and crevice corrosion. Incoloy 825 is especially resistant to sulfuric and phosphoric acids. Incoloy 825 is used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment. Standardmore product forms are round, flats, forging stock, pipe, tube, plate, sheet, strip and wire. less