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GH4220


GH4220 is an aging hardening alloy based on nickel-chromium-cobalt. A large amount of aluminum and titanium elements are added to the alloy to precipitate a large number of intermetallic compounds( γ’ The phase content is more than 40%) for precipitation strengthening, adding a large amount of tungsten and molybdenum elements for solid solution strengthening, and adding a small amount of carbon, boron and magnesium elements to strengthen the grain boundary, so as to obtain a comprehensive strengthening effect. This alloy is a high alloyed and high performance hard deformation alloy. Its main product is bar, which is suitable for manufacturing rotating parts such as turbine blades of aero-engine working under 950 ℃. It can be used in aerospace, aviation, military industry, energy and chemical industry; The quality grade shall be rechecked according to the national standard, national military standard, navigation mark, etc;

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