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GH4738


GH4738 alloy has good oxidation resistance and corrosion resistance in various atmospheres encountered by jet engines or similar I working conditions. The oxidation resistance temperature of continuous working can reach 1040 ° C, and that of intermittent working can reach 870 ° C. The alloy also has good resistance to salt spray corrosion, especially in the solution treatment state. After 1080 ° Cx4h/AC+stabilization+aging treatment, the notch rupture test at 650 ° C, 750 ° C and 815 ° C shows that the bar has no defect sensitivity. After long-term aging at 650 ° C and 730 ° C to 3000 h, the alloy has no new phase precipitation and stable structure. GH4738 alloy has been used to make turbine discs, blades and sealing rings of aero-engines, as well as flue gas turbine blades, turbine discs and large bolts. The alloy is widely used abroad in the fields of rotating parts of equipment such as aviation, aerospace, petroleum, chemical and power generation, such as compressor blades, turbine discs, valve bodies, rings and shafts.

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