Common materials used for machined parts-3

Inconel: Another heat resistant super alloy (HRSA), Inconel is an excellent choice when temperatures are extreme or the environment corrosive. Aside from its use in jet engines, Inconel 625 and its harder, stronger brother Inconel 718 are found in nuclear power plants, oil and gas rigs, chemical processing facilities, and more. Both are quite weldable, but are expensive and even less machinable than CoCr, so should be avoided unless the need warrants.