GH3044
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of GH3044 in China. If you're going to wholesale high quality GH3044 made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
GH3044 Alloy Description
Gnee Alloy GH3044 Alloy Description
GH3044 is a nickel-chromium-based, solid-solution strengthened superalloy designed for long-term high-temperature service up to 900°C. It offers excellent oxidation resistance, high ductility, and superior thermal fatigue performance, with short-term heat resistance reaching 1000°C.
Its mechanical properties combine moderate high-temperature strength with high ductility, ensuring reliability under extreme thermal cycling conditions. Additionally, it exhibits excellent cold-forming and welding characteristics, facilitating fabrication into complex components. Typical applications span the aerospace sector (aero-engine main combustion chambers, guide vanes, afterburners, and fuel conduits), industrial equipment (high-temperature furnace components and heat treatment equipment), and the nuclear industry (high-temperature structural components requiring corrosion and oxidation resistance).
Available product forms include cold-rolled and hot-rolled sheets/plates, seamless tubing, round bars, and forgings, which can be procured according to specific requirements.
Equivalent grades for GH3044
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| GH3044 | - | - | - | NA 11 | МНЖМц 28-2,5-1,5 | NC15FE11M | NiCr15Fe |
Available forms of GH3044
Contact our experts to recommend the right alloy for your project
high temperature GH3030 Alloy Specification
| Parameter | GH3044 (GH44) |
|---|---|
| Material Type | Ni-Cr based solid-solution strengthened wrought superalloy |
| Product Forms | Cold-rolled sheet, hot-rolled plate, strip, bar, wire, seamless tube, rings |
| Typical Applications | Aero-engine main combustion chambers and afterburner components, heat shields, guide vanes, mounting flanges, ducts |
| Service Temperature | Long-term service up to 900°C |
| Strengthening Mechanism | Solid-solution strengthening (high W content, with minor Al and Ti) |
| Weldability | TIG welding, spot welding, seam welding, brazing; can be welded to 1Cr18Ni9Ti, GH1140, GH3030, GH3039 |
| Magnetic Properties | Non-magnetic |
| Applicable Standards | GJB 1952, GJB 2612, GJB 3020, GJB 3165, GJB 3317, GJB 3318, GB/T 14992 |
Key Properties of GH3030 Alloy
Chemical composition of GH3044 alloy (wt%)
| Element | Content Range (wt%) | Role |
|---|---|---|
| Nickel (Ni) | Balance | Matrix element - provides high-temperature stability |
| Chromium (Cr) | 23.5 – 26.5 | Core oxidation resistance element - forms Cr₂O₃ protective film |
| Tungsten (W) | 13.0 – 16.0 | Core solid-solution strengthening element - enhances high-temperature strength |
| Iron (Fe) | ≤ 4.00 | Limited to maintain nickel-base characteristics |
| Molybdenum (Mo) | ≤ 1.50 | Secondary solid-solution strengthening |
| Aluminum (Al) | ≤ 0.50 | Oxidation resistance |
| Titanium (Ti) | 0.30 – 0.70 | Carbide stabilization |
| Carbon (C) | ≤ 0.10 | Grain boundary strengthening control |
| Manganese (Mn) | ≤ 0.50 | Deoxidation |
| Silicon (Si) | ≤ 0.80 | Deoxidation |
| Phosphorus (P) | ≤ 0.013 | Strictly controlled - ensures toughness and weldability |
| Sulfur (S) | ≤ 0.013 | Strictly controlled - ensures hot workability and weldability |
| Copper (Cu) | ≤ 0.07 | Impurity element control |
Physical Properties of GH3044 Alloy
| Property | Value | Unit |
|---|---|---|
| Density | 8.89 | g/cm³ |
| Melting Range | 1352 – 1375 | °C |
| Thermal Conductivity (100°C) | 11.7 | W/(m·K) |
| Specific Heat (100°C) | 440 | J/(kg·K) |
| Elastic Modulus (RT) | ~203 | GPa |
| CTE (20–100°C) | 12.25 × 10⁻⁶ | /°C |
| Magnetic Properties | Non-magnetic | - |
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High-temperature mechanical properties of GH3044
High-Temperature Tensile Properties (Typical)
| Temperature (°C) | UTS (MPa) | Elongation (%) |
|---|---|---|
| 20 (RT) | ≥ 750 | ≥ 40 |
| 900 | ≥ 190 – 200 | ≥ 30 |
High-Temperature Creep Rupture (900°C)
| Condition | Value |
|---|---|
| Stress σ=70 MPa | Rupture life ≥ 23 hours |
Oxidation Resistance (100h Exposure)
| Temperature (°C) | Oxidation Rate (g/m²·h) | Intergranular Oxidation Depth (mm) |
|---|---|---|
| 900 | 0.0971 | 0.016 |
| 1000 | 0.2050 | 0.080 |
| 1100 | 0.4320 | 0.110 |
| 1200 | 0.7880 | - |
Contact us for information on our GH3044 production process
GH3044 heat treatment process
| Product Form | Heat Treatment Process | Soaking Time |
|---|---|---|
| Hot-rolled plate, cold-rolled sheet, strip | 1120–1160°C / Air Cool (AC) | δ ≤ 3mm: 8–12 min; δ 3–5mm: 12–16 min |
| Bar, ring blank | 1120–1160°C / Air Cool (AC) | - |
| Ring forging | 1120–1160°C / AC or Oil Quench (OQ) | - |
Click to view the GH3044 heat treatment process curve
Three Core GH3044 Product Forms & Full Specifications
GH3044 Round Bar/Rod (Hot-Forged and Hot-Rolled)
Production Manufacturing Process
1. Smelting: VIM + ESR double melting process, ultra-low impurity segregation, uniform microstructure, eliminate internal shrinkage & porosity for high-temperature service safety
2. Hot Working: Two forming routes
3. Hot Rolling: For small & medium diameter bars (10mm–80mm), high production efficiency, uniform grain structure
4. Hot Forging: For large diameter billets over 80mm, optimized for heavy-load mechanical performance
5. Solution Heat Treatment: Solution annealing at 1140°C–1200°C rapid air cooling, fully dissolve alloy elements to maximize ductility & high-temperature strength
6. NDT Non-Destructive Testing: 100% UT ultrasonic inspection, MT magnetic particle testing, standard Class A internal flaw level for aerospace-grade delivery
7. Post-processing: Straightening, cutting to fixed/random length, customized surface treatment
Surface Treatment Options for GH3044 Rod
| Surface Finish | Craft & Feature | Application Scenarios |
|---|---|---|
| Black Rolled/Forged Surface | Hot rolling & forging without pickling, oxide black skin, lowest cost | Rough machining, secondary deep processing for heavy machinery |
| Peeled / Bright Surface | Centerless peeling removes surface oxide & decarburization, Ra ≤1.6μm, easy flaw inspection | General machinery, standard machined parts, mass production |
| Polished / Centerless Ground | Precision grinding on peeled blanks, tolerance up to h8/h9, Ra ≤0.8μm | High-precision CNC auto lathe parts, rotating shaft core components |
Dimensional Range
| Parameter | Specification |
|---|---|
| Diameter | Small bar: Φ10 – 35 mm; Medium bar: Φ40 – 120 mm; Large bar: Φ130 – 500 mm+ (custom forged billets available) |
| Length | Random length: 2000 – 5000 mm; Fixed length cuttable upon request (standard: 3000 mm) |
| Tolerance | Hot rolled: h10 / h11; Ground / polished: h8 / h9 |
Main Application of GH3044 Rod
Aerospace & Defense: Jet engine connecting rings, baffles, flame stabilizers, high-temperature fasteners
Power Gas Turbine: Gas turbine combustion chamber frames, support shafts, components working under 900–1100°C long-term thermal cycle
Industrial Furnace: Furnace roller, heat treatment fixture, high-temperature structural support under repeated heating & cooling
Petrochemical: High-temperature reactor internal parts, corrosion-resistant high-temperature pipeline supports
GH3044 Cold Rolled Sheet & Plate (Core Flat Product)
Production Flow
1. VIM+ESR double smelting to guarantee sheet uniformity, avoid plate cracking during high-temperature service
2. Multi-pass cold rolling: Thin gauge 0.05–3.0mm sheet via repeated cold rolling & intermediate solution annealing to eliminate internal stress
3. Solution Heat Treatment: 1150–1200°C solution treatment + rapid water cooling, deliver ultimate ductility & high-temperature oxidation resistance
4. Leveling & Cutting: Precision leveling to ensure flatness; laser cutting service for customer drawing exact blank shapes
5. Surface finishing & quality inspection
Standard Surface Finishes for GH3044 Sheet
| Surface Grade | Appearance & Craft | Typical Usage |
|---|---|---|
| 2B Finish (Cold Rolled, Annealed & Pickled) | Matte grey uniform surface | Most popular export grade, aerospace combustion liners, easy forming & welding |
| Bright Annealed (BA) | Mirror bright oxide-free surface under inert atmosphere annealing | Precision thin sheet for high-cleanliness aerospace thermal shielding parts |
| No.1 Hot Rolled Annealed & Pickled | Matte dark oxide-free surface | Heavy plate over 4mm, industrial furnace bulk lining, thermal shield panels |
| Sand Blasted / Shot Peened | Uniform matte rough surface | Thermal barrier coating base, increase coating adhesion strength |
GH3044 Plate Dimensions and Specifications
| Parameter | Specification |
|---|---|
| Thickness | Cold rolled thin sheet: 0.05 – 3.0 mm; Hot rolled plate: 4.0 – 12.0 mm |
| Standard Width | 1000 mm / 1219 mm / 1500 mm |
| Compliance Standard | GB/T 14992, ASTM B435 (Hastelloy X equivalent comparison) |
Core Application of GH3044 Sheet
Aerospace Combustion Chamber Liners: Largest end-use market, jet engine flame tubes, afterburner heat shields
Gas Turbine Hot Section Parts: Transition pieces, high-temperature partition shields
Industrial Furnace & Heat Shield: Vacuum furnace lining, heat treatment fixture plates
High-Temp Heat Exchanger: Heat exchange components under continuous high-temperature oxidizing gas environment
GH3044 Seamless Tube
Manufacturing Process
1. VIM+ESR double melting for consistent tube blank metallurgy, stable performance under 1000°C cyclic heating
2. Cold Working: Cold Pilger + Cold Drawing multi-pass forming, uniform wall thickness & smooth inner/outer surface
3. Solution Heat Treatment: 1120–1200°C annealing + rapid air/water quenching, fully release cold work stress
4. Full NDT Inspection: 100% ultrasonic & eddy current testing for tube wall defects
5. Surface polishing, precision length cutting, customized end processing
GH3044 Seamless Pipe Surface Options
| Surface Finish | Description | Typical Applications |
|---|---|---|
| Bright Annealed (BA) | Mirror finish, no surface oxide | Semiconductor & ultra-clean lab equipment |
| Pickled & Annealed (AP) | Matte grey pickled surface, cost-effective | Furnace & thermal equipment |
| Polished Tube | 180–600 grit mirror polish | Precision instrument outer shell |
GH3044 Seamless Pipe Size Range
| Parameter | Specification |
|---|---|
| Outer Diameter | Capillary tube: Φ10 – 30 mm; Thin wall tube: Φ30 – 140 mm; Heavy wall tube: Φ140 – 320 mm |
| Wall Thickness | 0.5 mm – 25 mm; Custom thin / thick wall available |
| Length & Tolerance | Custom fixed length; Tight dimensional tolerance per customer drawing |
Tube Application Fields
Advanced Furnace Industry: Furnace radiant tubes, heating element protection sleeves, 1200°C thermal shielding tubes
Instrument & Sensors: Thermocouple protection tubes, high-temperature probe casings
Environmental & Waste Treatment: High-temperature flue gas pipeline, thermal decomposition reactor liners
Semiconductor Manufacturing: Ultra-clean high-temperature process piping, diffusion furnace tubes
Automotive Performance Exhaust: High-temperature exhaust manifold & heat shielding pipes
Nickel Based Alloy GH3044 Packaging
GNEE Group Alloy GH3044 Product Packaging
GH3044 alloy Testing
| Test Category | Tube (GB/T 15062-2008) | Plate (GB/T 14995-2010) | Bar (HB 5437-1989) |
|---|---|---|---|
| Chemical Composition Analysis | Spectrometric / Chemical Analysis | Spectrometric / Chemical Analysis | Spectrometric / Chemical Analysis |
| Room-Temperature Tensile Test | GB/T 228.1 | GB/T 228.1 | GB/T 228.1 |
| High-Temperature Tensile Test | GB/T 4338 | GB/T 4338 | HB 5213 |
| Hardness Test | Brinell / Rockwell Hardness | Brinell / Rockwell Hardness | Brinell Hardness |
| Impact Test | - | - | Charpy Impact Test |
| Flattening Test | Mandatory | - | - |
| Flaring Test | Mandatory | - | - |
| Grain Size Examination | Metallographic Method | Metallographic Method | Metallographic Method |
| Intergranular Corrosion Test | Per standard requirement | Per standard requirement | - |
| Macro-Structure Examination | - | - | Mandatory (Acid Etching Test) |
| Ultrasonic Testing (UT) | Mandatory | As specified | As specified |
| Penetrant Testing (PT) | As specified | As specified | As specified |
| Eddy Current Testing (ET) | Tube-specific | - | As specified |
| Dimensional & Shape Inspection | Calipers/Micrometers/Gauges | Calipers/Micrometers | Calipers/Micrometers |
| Surface Quality Inspection | Visual (with magnification as required) | Visual (with magnification as required) | Visual (with magnification as required) |
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About Gnee Alloy
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Ready to upgrade your high-temperature performance?
Gnee Alloy, a leading expert in GH3044 high-temperature alloys, offers more than just metal; we provide technological solutions and a reliable supply chain.
Fast Delivery: In-stock products ship within 7-10 days.
Quality Assurance: ISO 9001 certified production processes.
Global Logistics: Door-to-door delivery to over 50 countries.
Gnee Alloy GH3030 certificate
FAQ
Q1: Why choose GH3044 over GH4169 (718) for service at 900°C?
A: This is a classic selection error. While 718 is stronger at 600°C, it reaches its over-aging threshold at 750°C and softens rapidly. GH3044 is the "Red Zone Hero" because its strength comes from solid-solution elements (W, Mo) that do not dissolve at extreme heat, providing superior Structural Integrity.
Q2: Is GH3044 easy to weld for complex assemblies?
A: Absolutely. One of its greatest commercial advantages is its Superior Weldability. It is highly ductile and does not require complex post-weld aging heat treatments, significantly reducing your Custom Fabrication time and cost.
Q3: Can GH3044 handle sulfur-containing combustion gases?
A: Yes. Its high Chromium content (23.5-26.5%) provides a robust defense against oxidation and corrosion in various combustion atmospheres, making it ideal for afterburner manifolds.
Q4: Do you offer trial orders for prototype liners?
A: Yes. As a Reliable Supplier, we support aerospace and energy innovation. We offer Flexible MOQs on our in-stock inventory of standard gauges.
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