Creep Resisting Alloys for Aircraft Gas Turbines: Details of the Two New Vacuum‐Melted Alloys: Nimonic 110 and Nimonic 115

THE history of the Nimonic series of alloys has been very closely linked to the aircraft gas turbine, for manufacture of the first alloy in the scries began twenty years ago at the time when Wg. Cdr. (now Air Commodore Sir Frank) Whittle was developing his engine. At that time it was an urgent military requirement that materials be put into production which were capable of withstanding high stresses at what were then regarded as the very high operating temperatures of the hot parts of the engine, such as the rotor blading, combustion chambers and gas ducting.