Nickel Alloy GH3044丨ХН60ВТ
GH3044 is a solid-solution strengthened nickel-chromium-based superalloy developed for long-term service at elevated temperatures up to 900°C. It offers excellent oxidation resistance, thermal fatigue resistance, thermal stability, and good fabrication characteristics, making it widely used in aerospace combustion chambers, afterburners, flame tubes, turbine components, and industrial heat-resistant equipment.
Nickel Alloy GH3044
GH3044 is a nickel-chromium-tungsten-molybdenum high-temperature alloy developed in China for aerospace and industrial thermal applications. The alloy is strengthened primarily through solid-solution strengthening rather than precipitation hardening, resulting in excellent thermal stability and resistance to microstructural degradation during prolonged exposure to elevated temperatures.
Due to its outstanding oxidation resistance, thermal fatigue resistance, and good weldability, GH3044 is extensively used in aircraft engines, combustion systems, gas turbines, and industrial furnaces operating under severe thermal cycling conditions.
GH3044 At a Glance
| Key Attribute | Value |
|---|---|
| Alloy Name | GH3044 |
| Alloy Type | Nickel-Chromium Superalloy |
| Strengthening Mechanism | Solid Solution Strengthening |
| Density | 8.89 g/cm³ |
| Melting Range | 1260 – 1340°C |
| Maximum Service Temperature | 900°C |
| Main Strength | Oxidation & Thermal Fatigue Resistance |
| Typical Forms | Bar, Plate, Sheet, Tube, Wire |
| Main Applications | Combustion Chambers, Flame Tubes, Afterburners |
| Manufacturing Standard | GB/T High Temperature Alloy Standards |
Features of GH3044
- Excellent oxidation resistance up to 900°C
- Outstanding thermal fatigue resistance
- Good thermal shock resistance
- High structural stability during prolonged service
- Excellent weldability
- Good formability and fabrication performance
- Strong resistance to combustion gases
- Suitable for cyclic heating environments
- Reliable long-term high-temperature performance
- Widely used in aerospace engine hot sections
Chemical Composition of GH3044
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 23.5 – 26.5 |
| Tungsten (W) | 13.0 – 16.0 |
| Molybdenum (Mo) | 3.5 – 5.5 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.80 |
| Iron (Fe) | ≤ 4.0 |
| Carbon (C) | 0.05 – 0.12 |
| Cerium (Ce) | ≤ 0.05 |
| Sulfur (S) | ≤ 0.013 |
| Phosphorus (P) | ≤ 0.013 |
Physical Properties of GH3044
| Property | Value |
|---|---|
| Density | 8.89 g/cm³ |
| Melting Range | 1260 – 1340°C |
| Electrical Resistivity | 1.25 μΩ·m |
| Thermal Conductivity | 11.0 W/m·K |
| Specific Heat Capacity | 450 J/kg·K |
| Modulus of Elasticity | 210 GPa |
Mechanical Properties of GH3044
Solution Annealed Condition
| Property | Metric Value |
|---|---|
| Tensile Strength | ≥ 735 MPa |
| Yield Strength (0.2% Offset) | ≥ 340 MPa |
| Elongation | ≥ 35% |
| Hardness | HB 180 – 260 |
Corrosion Resistance
GH3044 exhibits excellent resistance to oxidation, scaling, and combustion gas attack at elevated temperatures. The high chromium content promotes the formation of a dense and stable oxide film that protects the material from degradation during long-term thermal exposure.
The alloy performs particularly well in:
- Oxidizing atmospheres
- Combustion gas environments
- Thermal cycling applications
- Aerospace exhaust systems
- Industrial heat treatment equipment
High Temperature Performance
GH3044 is specifically engineered for sustained operation under severe thermal conditions.
Key performance advantages include:
- Long-term service capability up to 900°C
- Excellent thermal fatigue resistance
- Good creep resistance
- Stable microstructure during prolonged exposure
- Resistance to thermal shock
- Excellent oxidation resistance under cyclic heating
Available Forms
J&A Alloy supplies GH3044 in:
- Round Bar
- Forged Bar
- Plate
- Sheet
- Strip
- Wire
- Tube
- Pipe
- Ring Forgings
- Custom Machined Components
Applications of GH3044
Aerospace
- Combustion chambers
- Flame tubes
- Afterburners
- Exhaust systems
- Heat shields
Gas Turbines
- Combustor components
- Transition sections
- Hot gas ducts
Industrial Furnaces
- Furnace fixtures
- Burner systems
- Heat treatment equipment
Petrochemical Industry
- High-temperature process equipment
- Thermal processing systems
GH3044 vs Other High Temperature Alloys
| Alloy | Main Advantage | Maximum Service Temperature | Typical Applications |
|---|---|---|---|
| GH3044 | Oxidation & Thermal Fatigue Resistance | 900°C | Combustion Chambers, Flame Tubes |
| GH3030 | Fabricability | 800°C | General Heat Resistant Parts |
| Haynes 188 | Extreme Temperature Resistance | 1095°C | Gas Turbine Hot Sections |
| Inconel 625 | Corrosion Resistance | 982°C | Chemical Processing Equipment |
Welding & Fabrication
Forming
GH3044 possesses good hot-working and cold-forming characteristics and can be fabricated using conventional superalloy processing techniques.
Machining
- Carbide tools recommended
- Rigid machine setups preferred
- Adequate coolant required
- Moderate cutting speeds advised
Welding
GH3044 demonstrates excellent weldability and can be welded using:
- GTAW (TIG)
- GMAW (MIG)
- Plasma Arc Welding
- Resistance Welding
Post-weld solution treatment may be applied depending on service requirements.
Standards & Equivalent Grades
| Standard | Designation |
|---|---|
| Chinese Grade | GH3044 |
| Old Designation | GH44 |
| Material Type | Nickel-Chromium Superalloy |
| Manufacturing Standard | GB/T High Temperature Alloy Standard |
| Comparable Alloy | Haynes 188 (Application Similarity) |
Frequently Asked Questions
What is GH3044?
GH3044 is a solid-solution strengthened nickel-chromium-based superalloy developed for high-temperature aerospace and industrial applications.
What is GH3044 used for?
It is widely used in combustion chambers, flame tubes, afterburners, exhaust systems, and gas turbine hot-section components.
What temperature can GH3044 withstand?
GH3044 is typically used at temperatures up to approximately 900°C.
Is GH3044 oxidation resistant?
Yes. GH3044 offers excellent oxidation resistance and thermal fatigue resistance in elevated-temperature environments.
Can GH3044 be welded?
Yes. GH3044 exhibits good weldability and is suitable for GTAW, GMAW, and plasma welding processes.
What is the difference between GH3044 and GH3030?
GH3044 provides higher high-temperature strength and oxidation resistance, while GH3030 offers better formability and lower-cost fabrication.
What forms are available for GH3044?
GH3044 is available as bar, plate, sheet, strip, wire, tube, forgings, and custom-machined components.
What is the international equivalent of GH3044?
GH3044 does not have a direct UNS equivalent. It is a Chinese nickel-based solid-solution strengthened superalloy specified under the GB high-temperature alloy system and is often compared with Haynes 188 or similar oxidation-resistant aerospace alloys for application reference.
Why Choose J&A Alloy
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J&A Alloy supplies premium nickel alloys, cobalt alloys, and superalloys for aerospace, energy, petrochemical, and industrial markets worldwide.
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- EN 10204 3.1
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