1. Introduction:
GH4090 is a Ni-Cr-Co-based precipitation hardening wrought superalloy with a service temperature of up to 920°C. The alloy has high tensile strength and creep resistance at 815°C~870°C, good oxidation resistance and corrosion resistance, and has high fatigue strength under the repeated alternating action of cold and heat. GH4090 has good processing and welding properties.
GH4090 is suitable for making aircraft turbine engine turbine disks, blades, high temperature fasteners, clamps, sealing rings and elastic elements, etc. The main products are hot-rolled bars, cold-drawn bars, cold-rolled sheets, strips and cold-drawn wires. Wait.
GH4090 density: 8.18g/cm3
2. Performance
815°C~870°C has high tensile strength and creep resistance, good oxidation resistance and corrosion resistance, and has high fatigue strength under the repeated alternating action of cold and heat. GH4090 has good processing and welding properties.
3. Use
GH4090 has been used to make aero-engine high-temperature spring elements, high-temperature fasteners, combustion chamber collars and stop pins and other parts, and the similar grade Nimonic90 is also used in foreign countries to make aero-engine turbine blades, turbine disks and other parts.
4. Similar brands
Nimonic90, GH90, UNS N07090, 2.4632
5. Chemical composition (%)
C≤0.13, Cr=18.00~21.00, Co=15.00~21.00, Al=1.00~2.00, Ti=2.00~3.00, Fe≤1.50, Zr=≤0.0150, B≤0.020, Si≤0.80, Mn≤0.40, Si ≤0.015, P≤0.020, Cu≤0.200, Ni=Margin
6. Relevant technical standards
GB/T 14992 "Classification and designation of high temperature materials of superalloys and intermetallic compounds"
GB/T 14992 "Superalloy Cold Drawn Bars"
Seven, can provide product form
Hot-rolled bar, cold-drawn bar, cold-rolled sheet, strip, cold-drawn wire and flat wire, etc. Similar grades to GH4090 are available
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