GH3044 (GH44 / ЭИ868) High-Temperature Solid Solution Superalloy
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
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Key Global Export Markets and Local Procurement Characteristics for GH3044
We maintain a stable base of repeat volume customers across all major regions with demand for superalloys. The following market-specific procurement patterns may assist you in material selection:
| Region / Country | Procurement Characteristics |
|---|---|
| Russia & CIS Countries (Largest export demand market for GH3044) | Large-scale framework bulk orders for military aviation MRO (Maintenance, Repair & Overhaul) and local gas turbine power plant construction; mandatory requirement for aviation-grade sheets and bars produced by VIM+ESR dual-refining process; complete dual-use export license documentation required for customs clearance audit; products fully comply with Russian ЭИ868 local material standard. |
| India & Pakistan (Fast-growing repeat-order market) | Combination of small trial orders and annual long-term framework bulk contracts; primary demand for industrial-grade GH3044 sheets and pipes for domestic aviation fleets and thermal equipment OEMs; highly sensitive to unit price and MOQ (Minimum Order Quantity) flexibility. |
| Middle East (UAE, Saudi Arabia, Iran) | Priority handling of MRO emergency replenishment orders; primarily procure GH3044 seamless pipes and sheets for offshore petrochemical ultra-high-temperature furnace equipment; strict requirement for "3.2" grade full-item third-party material test certificates (MTC) for factory supplier audits. |
| Southeast Asia (Vietnam, Thailand) | Mainly targeting local gas turbine component processing factories; procure bar blanks and 2B-finish ultra-thin sheets for subsequent CNC precision machining; extremely focused on delivery lead times; support very low MOQ small trial orders. |
| Western Europe (Germany, France) | Targeting high-end semiconductor and industrial furnace OEM customers; demand BA-finish ultra-thin GH3044 sheets; each batch must provide SGS or TUV third-party witness inspection reports to comply with European factory audit standards. |
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Why Choose GH3044 High Temperature Alloy?
Selecting the appropriate heat-resistant alloy directly impacts equipment reliability, maintenance costs, and service life.
Compared to conventional stainless steels and standard heat-resistant alloys, GH3044 performs exceptionally well in high-temperature environments where oxidation resistance and structural stability are critical.
Its key advantages include:
Excellent oxidation resistance at temperatures up to approximately 1000°C
Superior creep and stress-rupture resistance during long-term service
Stable mechanical properties under thermal cycling conditions
Good thermal fatigue resistance
Excellent weldability and machinability
Long service life in oxidizing atmospheres
These characteristics make GH3044 an ideal material choice for components subjected to prolonged high-temperature operation.
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GH3044 Alloy Description
Gnee Alloy GH3044 High-Temperature Alloy Description
GH3044 (also known as GH44; historically corresponding to the Russian grades EI868 or KhN60VT) is a nickel-based (approx. 49%) wrought superalloy with a single-phase austenitic structure, primarily solid-solution strengthened by chromium (23.5%–26.5%) and tungsten (13.0%–16.0%). Its composition also includes molybdenum (≤1.50%), iron (≤4.0%), titanium (0.3%–0.7%), and carbon (≤0.10%), along with trace amounts of aluminum, silicon, manganese, phosphorus, and sulfur.
Regarding its service temperature range, the alloy exhibits good structural stability and moderate thermal strength below 900°C, and maintains excellent oxidation resistance in highly oxidizing environments at 1000–1100°C. It also possesses outstanding stress-rupture strength, thermal fatigue resistance, and high ductility. The alloy is amenable to cold stamping and welding and is typically supplied in the solution-annealed condition (processed at approximately 1200°C) to ensure a single-phase austenitic microstructure with minimal carbide precipitation. Available product forms include plates, sheets, bars, wires, and seamless tubing.
GH3044 Equivalent Grades and Standards
Grade：
GH3044(GH44,ЭИ868,XH60BТ,BЖ98)
Standards and Technical Conditions：
GB/T 14992,GJB 1952A,GJB 3020A,GJB 3165A,GJB 3317A,GJB 5301A,HB/Z140
Available Product Forms of GH3044
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high temperature GH3044 Alloy Specification
| Parameter | GH3044 (GH44) |
|---|---|
| Material Type | Ni-Cr based solid-solution strengthened wrought superalloy |
| Similar Grades | ЭИ686, ХН60ВТ (Russia) |
| Product Forms | Hot-rolled plate (4–14mm), cold-rolled sheet (0.5–4mm), strip (0.1–0.8mm), bar (Φ20–300mm), wire, tube, rings |
| Typical Applications | Aero-engine combustion chambers, afterburner components, heat shields, guide vanes, mounting flanges, ducts |
| Service Temperature | Long-term service up to 900°C |
| Strengthening Mechanism | Solid-solution strengthening (W 13–16%) + carbide strengthening (TiC, M₂₃C₆) + grain boundary strengthening |
| Density | 8.89 g/cm³ |
| Melting Range | 1352 – 1375°C |
| Magnetic Properties | Non-magnetic |
| Applicable Standards | GJB 1952, GJB 2612, GJB 3020, GJB 3165, GJB 3317, GJB 3318, GB/T 14992 |
Key Properties of GH3044 Alloy
Chemical composition of GH3044 alloy (wt%)
| Element | GB/T 14992 Standard Range | Our Factory Tight Control Limit | Procurement Risk Warning for Low-Cost Small Suppliers |
|---|---|---|---|
| Ni | Balance | Remainder | Low Ni content breaks matrix stability, causes rapid oxidation peeling above 950℃ |
| Cr | 23.5~26.5 | 24.0~26.0 | Cr below 23.5% cannot form continuous dense anti-oxidation film at high temperature |
| W | 13.0~16.0 | 13.5~15.5 | Insufficient W sharply reduces 900℃ long-term creep rupture strength |
| Mo | ≤1.5 | ≤1.2 | Excess Mo increases material cost without obvious performance gain |
| Ti | 0.30~0.70 | 0.40~0.60 | Balanced Ti improves cold forming plasticity, avoids stamping cracking |
| Al | ≤0.50 | ≤0.40 | Excess Al generates brittle intermetallic phases, reduces weldability |
| Fe | ≤4.0 | ≤2.5 | Excess Fe seriously damages high-temperature oxidation resistance |
| C | ≤0.10 | ≤0.06 | High carbon precipitates grain boundary carbides, shortens thermal fatigue life |
| Impurity S/P | S≤0.013, P≤0.013 | S≤0.010, P≤0.010 | Excess S/P forms low-melting grain boundary segregation, triggers welding hot cracks |
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) |
| Thermal Conductivity (900°C) | ~ 24.7 | W/(m·K) |
| Specific Heat | 440 | J/(kg·K) |
| Elastic Modulus (RT) | 203 | GPa |
| Elastic Modulus (900°C) | ~ 142 | GPa |
| Shear Modulus | - | GPa |
| Electrical Resistivity (RT) | - | μΩ·m |
| Poisson's Ratio | - | - |
| CTE (20–100°C) | 12.25 × 10⁻⁶ | /°C |
| CTE (20–900°C) | 15.6 × 10⁻⁶ | /°C |
| CTE (20–1000°C) | 16.28 × 10⁻⁶ | /°C |
| Magnetic Properties | Non-magnetic | - |
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GH3044 Room Temperature Mechanical Properties – Solution Treated Condition
| Test Temperature | Min Tensile Strength Rm (MPa) | Min Elongation A (%) | Matching Core Working Scenario |
|---|---|---|---|
| Room Temperature | ≥685 | ≥40 | Cold stamping thin-wall liners, room temp CNC machining blanks |
| 800℃ Long Cycle Service | ≥340 | ≥42 | Medium-temperature gas turbine shielding plates, furnace lining |
| 900℃ Continuous Stable Service | ≥195 | ≥30 | Aero engine main combustion chamber liners, core long-term working temperature |
| 1100℃ Short Peak Intermittent Temp | ≥95 | ≥48 | Intermittent ultra-high temperature petrochemical furnace internal components |
Defined Stable Service Temperature Range
Long-term continuous safe anti-oxidation service temperature: ≤900℃ (core design temperature for aviation combustion liner)
Short-term instantaneous peak oxidation tolerance: Up to 1100℃
Oxidation benchmark: 1000℃ static air oxidation weight gain ≤0.1mg/cm²·h, stable anti-oxidation performance in oxidizing, flue gas and weak sulfide environments
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GH3044 heat treatment process
| Condition | Temperature | Cooling | Application |
|---|---|---|---|
| Standard Solution (Supply) | 1120 – 1160°C | Air Cool (AC) | Sheet, plate, bar - standard delivery condition |
| Intermediate Annealing | 1140°C ± 10°C | Air Cool (AC) | During multi-stage stamping forming |
| High-Temperature Solution | 1200°C ± 10°C | Air Cool (AC) | For higher hot strength (afterburner components) |
| Thermal Fatigue Solution | 1150°C | Air Cool (AC) | For better thermal fatigue resistance |
Click to view the GH3044 heat treatment process curve
Three Core GH3044 Export Product Lines, Full Production Flow & Global Standard Export Specifications
GH3044 Round Bar
Two Production Processes for GH3044
Industrial General Grade (General Furnace, Petrochemical Non-Critical Parts): Single VIM vacuum induction melting → hot rolling/hot forging → 1140℃ solution heat treatment → straightening → surface processing → conventional UT ultrasonic inspection
Aviation MRO Premium Grade (Mandatory for Aero Engine Combustion Support Shafts): VIM+ESR double vacuum melting → hot forming → standard solution annealing → 100% UT + MT magnetic particle full NDT inspection, Class A internal flaw level, meets global aviation supplier audit standards, complete dual-use material export permit documents available for Russia, CIS, EU aerospace buyers.
GH3044: Three Standard Export Surface Conditions
| Surface Finish | Key Features | Target Buyers / Applications |
|---|---|---|
| Black Hot Rolled / Forged Raw Surface | Lowest unit procurement cost; retains original hot-forming oxide skin | Global machinery processing factories purchasing blank raw materials for secondary CNC deep machining; large furnace fixture manufacturers |
| Centerless Peeled Bright (Ra ≤ 1.6 μm) | Completely removes surface decarburization layer; uniform bright surface for easy visual defect inspection | Most popular export finish for mass gas turbine auxiliary structural shafts; saves customers one peeling process and labor cost |
| Precision Centerless Ground / Polished (h8/h9 tolerance, Ra ≤ 0.8 μm) | Ultra-strict dimensional tolerance; mirror-smooth surface | Aerospace precision fastener manufacturers; small rotating shaft component factories with high-precision drawing requirements |
GH3044 Standard Specifications – In Stock (Supports Rapid MRO Emergency Delivery)
| Parameter | Specification |
|---|---|
| Diameter Series | Small bar: Φ10 mm ~ Φ35 mm; Medium bar: Φ40 mm ~ Φ120 mm; Large customized forged billet: Φ130 mm ~ Φ500 mm |
| Length Specification | Random length: 2000 mm ~ 5000 mm (standard stock); Customizable fixed cutting length: 500 mm ~ 3000 mm per customer technical drawings |
| Tolerance Benchmark | Hot rolled blank: h10 / h11; Precision ground / polished bar: h8 / h9 tight tolerance |
Core Global Export Application of GH3044 Round Bar
Aerospace & Military MRO: Aero engine combustion chamber support brackets, flame stabilizer connecting rods, 900℃ medium-temperature aircraft fasteners
Power Gas Turbine OEMs: Combustion chamber small support shafts, static high-temperature structural blanks working under 800~900℃
Industrial Furnace Equipment Factory: Furnace roller support frames, heat treatment fixture bearing rods
Petrochemical Plant: High-temperature reactor internal fixed support shafts, anti-oxidation pipeline fixing brackets
GH3044 Cold Rolled Sheet & Hot Rolled Plate
GH3044 Plate Manufacturing Process
VIM/VIM+ESR vacuum smelting ingot → multi-pass cold rolling + intermediate stress relief annealing → 1120~1160℃ solution treatment + rapid air cooling → high-precision leveling to meet international export flatness tolerance standard → laser cutting blank one-stop service → full metallurgical grain & surface visual inspection before shipment
Four Mainstream Export Surface Conditions for GH3044 Sheets
| Surface Finish | Key Features | Target Buyers / Applications |
|---|---|---|
| 2B Cold Rolled Annealed Pickled Matte (No.1 Global Export Grade, 78% bulk orders choose this finish) | Uniform matte grey pickled surface; balanced cost; ultra‑high stamping ductility; excellent TIG welding performance | Global aerospace combustion liner mass production manufacturers; industrial vacuum furnace lining OEMs |
| BA Bright Annealed Mirror | Annealed under inert protective gas; zero surface oxide layer; ultra‑high surface cleanliness | Semiconductor thermal equipment manufacturers; high‑standard aerospace sealing thin‑sheet processing factories |
| No.1 Hot Rolled Annealed Pickled Plate | Dark matte oxide‑free surface; applicable only for plates over 4 mm thickness | Large industrial furnace mass lining production OEMs with low surface precision requirements |
| Sand Blasted / Shot Peened Rough Surface | Uniform matte rough surface; used as base substrate for thermal barrier coating (TBC) | Global gas turbine hot‑section component coating processing factories |
Standard Export Specifications for GH3044 Sheets (Stock Items Regularly Kept by the Factory)
| Parameter | Specification |
|---|---|
| Thickness Classification | Cold rolled thin sheet: 0.05 mm ~ 3.0 mm; Hot rolled thick plate: 4.0 mm ~ 12.0 mm |
| Standard Export Width | 1000 mm / 1219 mm / 1500 mm; Customizable slitting width for special non‑standard equipment |
| Compliance Standards | GB/T 14992, GJB 1952 (aviation standard), Russian ЭИ868 equivalent technical specification; Support third‑party SGS/TUV test reports matching overseas customer internal audit requirements |
Core Export Application of GH3044 Sheet & Plate
Aerospace Core OEMs: Jet engine main combustion chamber flame tubes, afterburner heat shielding baffles, engine 900℃ static partition thin plates (core designated material for Russian series aviation MRO)
Gas Turbine Manufacturers: 800~900℃ static anti-oxidation compartment shielding plates, transition section lining thin plates
Vacuum Furnace Equipment Factory: Furnace integral lining plates, ultra-high temperature static thermal shock resistant structural panels
Petrochemical High-Temperature Equipment: High-temperature reactor anti-oxidation lining plates, high-heat pipeline separation sheets
GH3044 Seamless Tube Series
Complete Production Process for GH3044 Seamless Pipes (Export Standard with Zero Wall Thickness Deviation)
Vacuum melted GH3044 tube blank → cold pilger + multi-pass cold drawing to strictly control wall thickness deviation → solution heat treatment to eliminate cold working residual stress → 100% eddy current + ultrasonic dual NDT inspection to detect internal tube wall defects → surface finishing & customized tube end flanging/threading processing
Three Surface Treatment Conditions for GH3044 Seamless Pipes
| Tube Finish | Surface Description | Target Market / Typical Application |
|---|---|---|
| BA Bright Annealed | Mirror, oxide‑free, ultra‑clean surface | Mainly exported to semiconductor diffusion furnace manufacturers |
| AP Pickled & Annealed | Matte grey, cost‑effective surface | Mainstream global orders for furnace radiant heating tubes |
| 180~600 Grit Mirror Polished | Mirror‑polished surface | Dedicated tubing for precision instrument thermocouple protection sleeves and aerospace hydraulic pipelines |
Export specifications for GH3044 seamless pipes
| Parameter | Specification |
|---|---|
| Outer Diameter Classification | Capillary tube: Φ10 – 30 mm; Thin wall tube: Φ30 – 140 mm; Heavy wall customized tube: Φ140 – 320 mm |
| Wall Thickness | 0.5 mm – 25 mm; Customizable ultra‑thin wall and extra heavy wall per customer drawing specifications |
| Custom Processing Services | Fixed length cutting, tube end flanging, threading, sealing cap processing for overseas pipeline manufacturers |
Application Industries for GH3044 Seamless Pipes
Furnace & Thermal Equipment Factory: Furnace radiant heating tubes, heating element protection sleeves working under ≤900℃
Instrument & Sensor Manufacturers: High-temperature thermocouple protection tubes, high heat probe outer casings
Environmental Waste Treatment Equipment: High-temperature flue gas conveying pipeline liners, thermal decomposition reactor internal tubes
Semiconductor Manufacturing Plant: Ultra-clean high-temperature diffusion furnace process piping
Comparison of GH3044 with Other Superalloys
Selecting the correct alloy depends on operating temperature, corrosion environment, mechanical loading, and fabrication requirements.
| Alloy | Typical Characteristics | Typical Applications |
|---|---|---|
| GH3030 | Good oxidation resistance, economical choice | Medium‑temperature furnace components |
| GH3044 | Excellent oxidation resistance and creep strength | Aerospace, combustion chambers, industrial furnaces |
| GH3128 | Higher high‑temperature strength | More demanding aerospace applications |
| Inconel 600 | General heat‑resistant alloy | Heat treatment equipment |
| Inconel 601 | Excellent oxidation resistance | Furnace equipment and radiant tubes |
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Nickel Based Alloy GH3044 Packaging
Why Choose GH3044 Over GH3039/GH3128?
Industry-leading ultra-high-temperature oxidation resistance (core competitive advantage)
Field procurement data from over 350 global manufacturers shows that GH3044's oxidation resistance at 1000°C is 45% superior to that of GH3039, with a maximum oxidation resistance temperature of 1100°C. This effectively resolves issues faced by aviation MRO (Maintenance, Repair, and Overhaul) customers-such as rapid oxidation and short service life-when using medium-temperature alloys for stationary high-temperature furnace linings and combustion chamber liners.
Superior cold-stamping formability, ideal for complex, thin-walled liner components
GH3044 exhibits significantly better ductility in the solution-treated state compared to GH3128. Under identical complex flame tube forming processes, the stamping scrap rate is reduced by 38%, substantially cutting mass-production waste costs for customers.
A perfect balance of cost and performance for stationary high-temperature applications
For equipment operating stably at stationary temperatures of 800–900°C without frequent, severe thermal cycling, GH3044 offers a unit price 10–16% lower than GH3128. Combined with its vastly superior ultra-high-temperature oxidation resistance, this results in a 32% reduction in total lifecycle operation and maintenance costs.
Excellent weldability and low susceptibility to hot cracking
Compatible with standard TIG/MIG welding processes used in major global manufacturing facilities, requiring no special parameter adjustments. Thin-walled sheets can be welded without preheating, lowering the technical threshold for welding operations.
Requires only single-step solution heat treatment; no secondary aging needed
Unlike precipitation-hardening alloys (such as GH4169 or GH4090) that require two-stage aging, GH3044 requires only a single solution annealing treatment. This saves customers the cost of secondary heat treatment and shortens production cycles.
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About Gnee Alloy
To ensure we can promptly provide the most accurate factory-direct pricing and appropriate material grade recommendations, please include the following information in your inquiry email:
Required GH3044 product form: round bar / plate / seamless pipe
Precise, complete dimensions: diameter/thickness × width × length, along with surface finish requirements
Actual operating temperature and application environment (e.g., aero-engine MRO / gas turbines / industrial furnaces / petrochemicals)
Order type: small-batch trial order / annual bulk framework contract / urgent MRO replenishment
1.Destination country and specific certification requirements (e.g., 3.1 Material Test Certificate (MTC) / 3.2 third-party inspection / dual-use item export license / Russian EI868 equivalent certification)
2.Complimentary laboratory samples available for high-temperature oxidation resistance and tensile property testing (buyer covers international shipping costs only)
3.Upon submission of your inquiry, we will immediately provide the complete GH3044 technical data sheet and a performance comparison report between GH3044 and GH3039/GH3128
4.Comprehensive support for custom fabrication based on drawings, laser cutting, special tolerances, and customized surface finishing services
Our Factory Core Strengths as Professional GH3044 Supplier
As a manufacturer of high-temperature alloys integrating production and export with 18 years of experience, our factory fully meets the rigorous supplier audit standards set by procurement departments in the global aerospace, power generation, and petrochemical industries:
Fully Integrated, Closed-Loop Production Line: We operate independent workshops for vacuum melting, hot/cold rolling, heat treatment, precision machining, and testing. By eliminating the need to outsource intermediate processes, we maintain comprehensive control over product quality and delivery schedules.
Comprehensive Professional Testing Laboratory: Equipped with a full suite of instruments-including spectrometers, high-temperature tensile testing machines, oxidation resistance furnaces, ultrasonic and eddy current flaw detectors, and metallographic microscopes-we ensure 100% inspection of every batch before shipment.
Complete International Certification System: We hold ISO9001, ISO14001, and ISO45001 certifications, as well as third-party validations from SGS and TÜV Rheinland. All documentation complies with global supplier audit standards, and we can provide specific certifications corresponding to the Russian EI868 grade.
Expert Cross-Border Team with 18 Years of GH3044 Export Experience: We are proficient in handling export licenses for dual-use items, customs clearance, airworthy packaging, and end-to-end logistics tracking. We are also well-versed in the specific export documentation requirements for Russia and the CIS region.
Flexible Order Support System: No strict Minimum Order Quantity (MOQ) limits for small-batch trial orders; exclusive, stable contract pricing for large-scale annual framework agreements; and complimentary laboratory samples provided for customer performance testing.
Gnee Alloy GH3044 certificate
FAQ
Q1: What core advantage makes GH3044 different from GH3039 & GH3128? What is its long-term stable service temperature?
A: GH3044 is high Cr-W solid solution nickel alloy, equivalent to Russian ЭИ868. Its core competitiveness is ultra-high static high-temperature oxidation resistance, stable long-term service at 900℃, short-term peak oxidation resistance up to 1100℃; cold stamping plasticity is better than GH3128, cost lower than GH3128, but thermal cycle fatigue performance is inferior to GH3128, not recommended for parts with frequent large temperature fluctuations.
Long-term continuous safe anti-oxidation service temperature: ≤900℃
Short-term instantaneous peak oxidation tolerance: Up to 1100℃ It is single-phase solid-solution alloy, no aging heat treatment required, only single solution annealing can release its full anti-oxidation and forming performance.
Q2: What three core product forms of GH3044 can you supply? What standard sizes are in permanent stock?
A: We fully produce three mainstream finished forms for global export, all standard inventory sizes support fast MRO emergency delivery:
GH3044 Round Bar & Forged Billet Diameter Φ10mm~Φ500mm; random length 2000~5000mm, customizable fixed cutting length; surface options: black forged, peeled bright, centerless ground polished (h8/h9 tight tolerance)
GH3044 Cold Rolled Sheet & Hot Rolled Plate Thickness: Thin sheet 0.05~3.0mm; thick plate 4.0~12mm; standard width 1000/1219/1500mm, customizable slitting width; surface finishes: 2B, BA bright annealed, No.1 hot rolled pickled, sand blasted
GH3044 Seamless Cold Drawn Tube Outer diameter Φ10~320mm; wall thickness 0.5~25mm; surface: BA bright tube, AP pickled tube, 180~600 grit mirror polished tube We also provide secondary processing: laser cutting, precision peeling, tube end flanging/threading, blank forging per customer drawings.
Q3: Two melting grades of GH3044, what's the difference for export audit & total cost?
A: We offer two melting processes to match different customer budget and industry audit standards:
Industrial General Grade (Single VIM Vacuum Induction Melting) Suitable for ordinary industrial furnace, petrochemical non-critical static high-temperature parts, cost-saving option, basic UT ultrasonic inspection provided with shipment.
Aviation MRO Premium Grade (VIM+ESR Double Vacuum Melting) Mandatory for aero engine combustion liner core components. Eliminates element segregation, micro-shrinkage and harmful S/P impurities locked far below standard limits, attached with 100% UT+MT full NDT Class A internal flaw report, meets global aviation supplier audit requirements, complete dual-use material export documents & Russian ЭИ868 matching certification available for Russia, CIS, EU aerospace clients.
Q4: Which surface finish of GH3044 sheet is the most popular for global bulk export orders?
A: The 2B cold rolled annealed & pickled matte finish accounts for 78% of our overseas bulk GH3044 sheet orders. It balances procurement cost, ultra-high stamping ductility and excellent welding performance, the primary choice for mass production of aviation combustion liners and static furnace lining plates by global OEM manufacturers. Other special surface options for customized demands:
BA Bright Annealed Mirror Finish: High-cleanliness oxide-free surface for semiconductor thermal equipment & aerospace sealing thin sheets
No.1 Hot Rolled Pickled Plate: Only for heavy furnace lining plates over 4mm thickness, low surface precision demand
Sand Blasted Surface: Used as substrate for thermal barrier coating (TBC) on gas turbine hot-section components.
Q5: What impurity content limits do you strictly control for GH3044? Why this matters for customer combustion liner mass production?
A: Our factory locks all harmful impurity elements far below national standard upper limits for every batch: Sulfur ≤0.010%, Phosphorus ≤0.010%, Fe ≤2.5% (national standard upper limit Fe ≤4.0%). From 20 years of procurement on-site data verification: Many low-cost small factories raise Fe, S, P content to cut raw material cost, which directly leads to sheet cracking during complex liner stamping, premature oxidation peeling and shortened service life under 900℃ static high temperature. Every GH3044 shipment attaches full spectral composition test report for your factory audit.
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