GH901
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Description
Scope of supply for Aviation Group
Forgings, round rods, steel plates, rings, seamless pipes, steel plates/steel belts, wire welding materials, welcome to inquire!
1. Introduction to GH901 Materials
GH901 is an austenitic aging hardening alloy based on Fe-43Ni-12Cr, adding titanium, aluminum and equal reinforcement elements, and contains trace amounts of boron and lower carbon. It is diffusely strengthened by the metastable γ”[Ni3(Ti, Al)] phase, and trace amounts of aluminum can inhibit the conversion of γ” to η-Ni3Ti phase. The alloy has high yield strength and long-lasting strength below 650℃, good oxidation resistance below 760℃, and stable tissues for long-term use. This alloy is a relatively mature alloy developed in the early stage and is widely used to manufacture rotating disc parts (turbine discs, compressor discs, shaft journals, etc.), static structural parts, turbine outer rings and fasteners of aviation and ground gas turbine engines working below 650°C.
2. Chemical composition of GH901
| alloy | % | Ni | Chromium Cr | Iron Fe | Carbon C | Manganese Mn | Silicon Si | Stone Mo | aluminum
Al |
titanium
Of |
bismuth
Bi |
phosphorus
P |
copper
Cu |
lead
Pb |
boron
B |
sulfur
S |
| GH901 | Minimum value | 40.0 | 11.0 | margin | 0.02 | – | – | 5.0 | – | 2.8 | – | – | – | – | 0.01 | – |
| Maximum value | 45.0 | 14.0 | margin | 0.06 | 0.50 | 0.40 | 6.5 | 0.30 | 3.1 | 0.001 | 0.020 | 0.20 | 0.001 | 0.02 | 0.008 |
III. GH901 reference standard
WS9-7029 blank-1996 “GH901 alloy shaft rod material”
WS9-7029 disc blank-1996 “GH901 alloy rotating parts cake blank”
WS9-7029 Forgings-1996 “GH901 Alloy Disk, Shaft Forgings”
WS9-7031-1996 “GH901 Alloy Hot Rolled and Forged Rods”
WS9-7031 ring blank-1996 “GH901 alloy rolling ring ring for all parts”
WS9-7031 ring parts-1996 “GH901 alloy rolled ring parts”
WS9-7031-1996 “GH901 Alloy Flash Welded Ring Profile”
IV. GH901 physical properties
| density | 8.21 G / cm3 |
| Melting point | 1360 ℃ |
GH901 Thermal Conductivity
| I/℃ | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
| λ/（W/（m·C）） | 12.0 | 13.5 | 15.1 | 16.7 | 18.2 | 19.8 | 21.2 | 22.8 | 24.3 | 25.1 |
GH901 linear expansion coefficient
| I/℃ | 20～100 | 20～200 | 20～300 | 20～400 | 20～500 | 20～600 | 20～700 | 20～800 | 20～900 |
| A/10-6C-1 | 13.5 | 14.0 | 14.4 | 14.9 | 15.1 | 15.2 | 15.5 | 16.0 | 16.5 |
GH901 thermal diffusion rate
| I/℃ | 20 | 100 | 150 | 250 | 350 | 450 | 550 | 650 | 950 |
| Q/（10-6m2/S）） | 2.66 | 2.93 | 3.00 | 3.18 | 3.47 | 3.73 | 3.78 | 4.02 | 4.11 |
5. Material characteristics
GH901 heat treatment method
1090℃±10℃, 2~3h, water-cooled or oil-cooled +775℃±5℃, 4h, air-cooled +700~720℃, 24h, air-cooled.
GH901 product status
Various disk-shaped forgings, rolled rings, bars and other forgings. The state can be heat treated or not.
GH901 smelting and casting process
The alloy is produced using a dual process of vacuum induction plus vacuum arc remelting, and the vacuum induction plus electroslag remelting process can also be used.
VI. GH901 application profile and special requirements
This alloy is widely used in foreign countries for rotating parts and fasteners working below 650°C on aircraft engines and ground gas turbines, and has a long service life. It has also been used in aircraft engines in China and is a mature alloy that has been tested for use.
