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Nimonic belongs to the family of nickel based alloys. It is a super alloy with high temperature and low-creep properties. Nimonic consists of 50% nickel and 20% chromium along with other added elements such as titanium and aluminium.
Nimonic alloy has good corrosion resistance, heat resistance and mechanical properties. Oxidation resistance is also a property of Nimonic. Conventional machining techniques that are usable on iron alloys are also usable on this alloy. Chromium is added to enhance the corrosion resistance of Nimonic in sulphuric environments. Nimonic is used in many industries for various purposes such as aerospace, gas turbine engineering, heat treatment equipment, nuclear engineering, and industrial furnace structural parts. Owing to its capability to withstand high temperatures, it is used in aircraft parts. Grades such as Nimonic 80A, Nimonic 75, and Nimonic 90 are commercially available. These are high performance alloys. The alloy is known for its ductility, and excellent strength. Nimonic also has a stable microstructure. Nimonic 80A was used for the turbine blades in the Rolls-Royce Nene and de Havilland Ghost.