GH901 is a Fe-Ni-Cr-based precipitation hardening deformed superalloy. The alloy is age-strengthened with a metastable γ'{Ni3(TI,Al)} phase, and a trace amount of aluminum inhibits the transformation of γ' to ηNi3Ti phase. The alloy has high yield strength and lasting strength below 650 °C, good oxidation resistance below 760 °C, and stable structure for long-term use. The main products are turbine discs, compressor discs, journals, static structural parts, turbine outer rings and fasteners.
GH901 similar grades
Incoloy901 (US), Nimonic901 (UK), Z8NCDT42 (France), 2.4662 (Germany)
Alloy % Nickel Copper Aluminum Iron Titanium Cobalt Manganese Sulfur Carbon Silicon Phosphorus Chromium Molybdenum Boron
GH901 Min. 40.0 Margin 2.35 11.0 5.0 0.01
Maximum 45.0 0.50 0.35 3.10 1.0 1.0 0.03 0.10 0.60 0.03 14.0 7.0 0.02
Physical properties of GH901:
Density 8.14 g/cm3
Melting point 1280-1345ºC
Minimum mechanical properties of GH901 alloy at room temperature:
Alloy and Condition Tensile Strength Rm N/mm2 yield strength RP0.2 N/mm2 Elongation A5 %
GH901 1034 689 12
GH901 alloy has the following properties:
Precipitation hardening, creep heat resistant steel. The alloy has high yield strength and lasting strength below 650°C, good oxidation resistance below 760°C, and is stable for long-term use. It is widely used in the manufacture of rotating disc-shaped parts (turbine disc, compressor disc, journal, etc.), static structure parts, turbine outer ring and fasteners of aviation and ground gas turbine engines working below 650 ºC.
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