GH3128 alloy, developed by the China Iron and Steel Research Institute in the 1960s, is a nickel-based superalloy with high-temperature deformation resistance. It achieves comprehensive solid solution strengthening through elements including W, Mo, Al, and Zr. In its solid solution state, the alloy exhibits a single-phase austenitic structure containing finely distributed TiN and M6C particles. During prolonged service, phases such as M6C, μ, and M23C6 gradually form. This alloy demonstrates exceptional plasticity, excellent oxidation resistance, superior creep strength, and favorable stamping/welding properties. It is widely used to manufacture critical components for aviation engines, including flame tubes operating at 950°℃ and nozzle casing shells for afterburner combustion chambers.
The density of GH3128 is ρ=8.81g/cm³.