This specification covers a corrosion and heat resistant nickel alloy in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings. These products have been used typically for parts requiring good machinability and high strength at room and cryogenic temperatures for short-time use up to 1000 degrees F (538 degrees C), particularly parts which are welded and then precipitation heat treated to develop required properties, but usage is not limited to such applications.