GH3044 is a high-performance nickel-chromium-tungsten alloy. It is characterized by excellent oxidation resistance at temperatures up to 1100°C and moderate creep strength below 900°C. The alloy exhibits high plasticity, excellent cold-forming properties, and superior weldability, making it a primary choice for complex sheet metal components in turbine engines.
The microstructure of GH3044 is stable, consisting primarily of a single-phase austenite matrix after solution treatment at 1200°C, with small amounts of MC and M23C6 carbides. Its high chromium content provides a protective oxide scale, while tungsten provides solid-solution strengthening to the matrix. It maintains good thermal fatigue resistance and is highly resistant to carburization and nitridation in high-temperature atmospheres.
Applications:
GH3044 is predominantly used in the aerospace and power generation industries for:
Aero-engine Components: Main combustion chambers, afterburner parts, and flame holders.
High-Temperature Structures: Thermal shields, guide vanes, and mounting rings.
Exhaust Systems: Ducting and liners for high-temperature gas flow.
Industrial Heating: Heat treatment furnace fixtures and components operating in oxidizing environments up to 1100°C.
Normal product forms: wires, rods, bars, forgings, strips, sheets, plates, and pipes.
Specifications/Standard: GB/T14992
Nickel (Ni): Balance
Chromium (Cr): 23.5 – 26.5
Tungsten (W): 13.0 – 16.0
Iron (Fe): ≤ 4.0
Molybdenum (Mo): ≤ 1.50
Silicon (Si): ≤ 0.80
Titanium (Ti): 0.30 – 0.70
Aluminum (Al): ≤ 0.50
Manganese (Mn): ≤ 0.50
Carbon (C): ≤ 0.10
Phosphorus (P): ≤ 0.013
Sulfur (S): ≤ 0.013
Physical Constants and Thermal Properties
