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 GH3030 Materials
GH3030 is an early-developed 80Ni-20Cr solid-solution strengthened superalloy with simple chemical composition. It possesses decent high-temperature strength and high plasticity below 800℃, along with excellent oxidation resistance, thermal fatigue resistance, cold stamping performance and weldability. After solid solution treatment, the alloy presents single-phase austenite with stable microstructure during service. Its primary supply form is cold rolled thin sheet, and deformed products such as bars, rings, wires and tubes are also available. It is mainly applied for turbine engine combustion chamber parts working under 800℃, as well as low-load high-temperature components requiring oxidation resistance up to 1100℃. GH3030 features outstanding hot and cold workability, widely manufactured into various chemical equipment and matching accessories.
2. Chemical components
| Alloy | Content limit | Ni | Cr | Fe | C | Mn | Si | S | P | Al | Ti |
| GH3030 | Minimum | Bal | 19 | – | – | – | – | – | – | – | 0.15 |
| Maximum | 22 | 1.5 | 0.12 | 0.7 | 0.8 | 0.02 | 0.03 | 0.15 | 0.35 |
3. Physical properties of GH3030
| Density(g/cm³) | Melting point(℃) | Thermal conductivity(W/m·℃) | Specific heat capacity(J/kg·℃) | Elastic modulus(GPa) | Resistivity(μΩ·m) | Linear expansion coefficient(10⁻⁶/℃) |
| 8.4 | 1374-1420 | 15.1(100℃) | 565.2 | 224 | 1.09 | 12.8(20~100℃) |
Room temperature mechanical properties of GH3030 in solid solution state:
| Alloy state | Tensile strength σb (MPa) | Elongation A5 % |
| Solid solution state | ≥785 | ≥35 |
4. GH3030 material characteristics
This 80Ni-20Cr solid-solution strengthened superalloy features simple chemical composition, satisfactory high-temperature strength and high plasticity below 800℃, as well as excellent oxidation resistance, thermal fatigue resistance, cold stamping performance and weldability. After solid solution treatment, the alloy is single-phase austenite with stable service microstructure.
Metallographic structure of GH3030: Single-phase austenite matrix with a small amount of TiC and Ti(CN) precipitates distributed at grain boundaries.
5. GH3030 application scope
1. Turbine engine combustion chamber components working below 800℃
2. Low-load high-temperature structural parts requiring oxidation resistance up to 1100℃
3. Movable firing frames for enamel furnaces
4. Various chemical equipment and matching accessories, benefited from excellent hot and cold processing performance
