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GH2909


GH2909 is a Fe-Ni-Co based precipitation hardening deformation superalloy with service temperature below 650 ℃. The alloy has high strength, high cold and hot fatigue resistance, low expansion coefficient and constant elastic modulus, as well as good hot working plasticity, cold forming and welding properties. GH2909 alloy has been used to make ring components for turbine engines, such as the rear casing of high pressure compressor, bearing ring, heat insulation ring, combustion chamber sealing ring, honeycomb seat and turbine outer ring; Rocket engine thrust combustion chamber, exhaust duct and collecting box, etc. It is also widely used in the manufacture of gun barrel, gun parts, glass-metal sealing materials, measuring tool molds and components for high-pressure hydrogen environment. Because of the low coefficient of thermal expansion and the small rate of change with temperature, this kind of alloy can effectively control the gap size of engine components and static components in a wide temperature cycle, reduce gas loss, save energy and reduce consumption, improve engine power, and extend the service life of components. During application, the alloy surface can be shot peened to improve the alloy's high fatigue strength due to its twists and turns.

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