High-performance alloy material for industrial engineering and critical application conditions.
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 GH4049 Materials
GH4049 alloy is a Ni-Co-Cr precipitation-hardened wrought superalloy designed for service temperatures below 950℃. It features excellent oxidation resistance up to 1000℃ and outstanding high-temperature strength below 950℃. Compared with similar nickel-based alloys, its hot workability is relatively poor, which can be greatly improved after electroslag remelting or vacuum arc remelting. The alloy is mainly used for gas turbine blades operating between 850℃ and 950℃.
Materials Technical Standards
GB/T14992 Classification and grade of high-temperature alloys and intermetallic compounds
GB/T14993 Specification for hot rolled rods for rotating components
GJB1953A Specification for hot rolled bars for high-temperature alloys for rotating parts of aircraft engines
HB/Z140 Aviation high-temperature alloy heat treatment process
2. Chemical composition of GH4049
| Alloy | Limit | C | Cr | Ni | Al | Ti | V | W | Mo | Fe | Ce | B | S | P | Si | Mn |
| GH4049/GH49 | Minimum | – | 9.50 | Bal | 3.7 | 1.4 | 0.200 | 5.0 | 4.5 | – | – | – | – | – | – | – |
| Maximum | 0.10 | 11.0 | 4.4 | 1.9 | 0.500 | 6.0 | 5.5 | 1.50 | 0.020 | 0.025 | 0.010 | 0.10 | 0.50 | 0.50 |
3. GH4049 physical properties
| Density | Unit | Value |
| Density | g/cm³ | 8.44 |
| Melting point | ℃ | 1320-1390 |
| Magnetic property | — | Non-magnetic alloy |
Minimum room temperature mechanical properties of GH4049 alloy:
| Alloy state | Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation A5 % | Brinell hardness HB |
| Solid solution treated | ≥570 | ≥275 | ≥8.0 | ≤363 |
4. GH4049 application fields
GH4049 is most widely applied for gas turbine working blades working at 850-950℃.
Manufacture aircraft engine turbine blades and other high-temperature load-bearing components.
Forgings can be processed into structural parts for marine gas turbines and military equipment.
