Specialist nickel alloy distributor, Philip Cornes, part of the TW Metals Group, has increased its stocks of the nickel-iron-chromium Alloy 825, in response to market demand. Alloy 825 is used typically in applications such as air cooled heat exchangers in petroleum refineries, seawater-cooled heat exchangers, onshore and offshore product piping systems and for components in sour gas service and sulphuric acid pickling plants. It has been a core product for Philip Cornes for many years and is a material in which they have a great deal of technical and processing experience. Increased stocks are now being held in a variety of product forms. These include seamless and welded pipe, sheet, plate, round bar, fittings and flanges. Reflecting the increased market demand, Philip Cornes has recently won a combined stock and manufacturing order in Alloy 825 from one of the largest refineries in South Korea. Valued at over USD 1 million, the order is for large diameter, heavy wall welded pipe, fittings and flanges for hydrogen critical service and is being used to replace existing carbon pipework. Alloy 825 (UNS NO8825) is a titanium-stabilised, fully austenitic nickel-iron-chromium alloy with additions of copper and molybdenum. It is being used increasingly, due to its resistance to stress corrosion cracking, pitting and crevice corrosion and good mechanical properties at both room and elevated temperatures, up to about 550°C.