In high-risk industrial heating and aerospace projects, finding thick steel plates (10mm-20mm) capable of maintaining structural integrity is a major bottleneck in the supply chain. Most commercially available "commercial-grade" thick steel plates suffer from the following problems:
Poor flatness: Warping or bending of the steel plate can damage the laser head, causing costly downtime, especially during CNC machining.
Internal porosity: Micropores and inclusions in the steel plate core reduce the safety factor of structural rings and furnace baffles.
Substitution risks: Unstable metallurgical processes that cannot meet international standards for high-temperature environments above 900°C.
At Gnee Alloy, we eliminate these risks. As a dedicated Tier-1 manufacturer, we offer high-purity steel plates specifically designed for extreme environments.
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GH3044 & GH3030 High Temperature Oxidation Sheet (10mm-20mm)
GH3044 & GH3030 High Temperature Oxidation Sheet (10mm-20mm)
GH3044 and GH3030 are solution-strengthened nickel-chromium-based superalloys, renowned for their excellent high-temperature oxidation resistance. These steel plates, ranging in thickness from 10mm to 20mm, are commonly used in aero-engine combustion chambers, furnace structures, and chemical equipment.
What is GH3030 material?
GH3030 is a high-temperature nickel-based alloy, renowned for its excellent oxidation resistance, good thermal stability, and high-strength mechanical properties at high temperatures.
1. GH3030 and GH3044 Material Overview
| Parameter | GH3044 | GH3030 |
|---|---|---|
| Material Type | Wrought Nickel-based Superalloy | Wrought Nickel-based Superalloy |
| Strengthening Mechanism | Solid-solution strengthening (W + Cr) | Solid-solution strengthening (Cr + trace Ti) |
| Product Forms | Plate, strip, bar, tube | Plate, strip, bar, tube |
| Typical Applications | Combustion chambers, afterburners, transition ducts, flame holders | Combustion chambers, furnace components, high-temperature tubing |
| Maximum Service Temperature (Load-Bearing) | ~900 – 950°C | ~800°C |
| Maximum Service Temperature (Oxidation) | ~1000°C | ~1000°C |
2. Comparison of chemical composition of GH3030 and GH3044 Plate (wt%)
| Element | GH3044 | GH3030 | Key Difference |
|---|---|---|---|
| Nickel (Ni) | Balance (≥ 65.0) | Balance (≥ 75.0) | GH3030 has higher Ni |
| Chromium (Cr) | 23.5 – 26.5 | 19.0 – 22.0 | GH3044 has higher Cr |
| Tungsten (W) | 13.0 – 16.0 | – | GH3044 contains high W |
| Iron (Fe) | ≤ 4.0 | ≤ 1.5 | GH3044 allows more Fe |
| Titanium (Ti) | 0.30 – 0.70 | 0.15 – 0.35 | GH3044 has higher Ti |
| Aluminum (Al) | 0.50 max | ≤ 0.15 | GH3044 contains Al |
| Molybdenum (Mo) | ≤ 1.5 | – | GH3044 may contain trace Mo |
| Carbon (C) | ≤ 0.10 | ≤ 0.12 | Similar |
| Manganese (Mn) | ≤ 0.50 | ≤ 0.70 | Similar |
| Silicon (Si) | ≤ 0.80 | ≤ 0.80 | Same |
| Phosphorus (P) | ≤ 0.013 | ≤ 0.030 | GH3044 stricter |
| Sulfur (S) | ≤ 0.013 | ≤ 0.020 | GH3044 stricter |
| Cerium (Ce) | ≤ 0.020 | – | GH3044 contains Ce |
3. Comparison of mechanical properties of GH3030 and GH3044 sheets at room temperature
| Property | GH3044 (Solution Treated) | GH3030 (Annealed) | Advantage |
|---|---|---|---|
| Tensile Strength, Ultimate (MPa) | ≥ 735 (107 ksi) | ≥ 685 (99 ksi) | GH3044 (~7% higher) |
| Tensile Strength, Yield (MPa) | Not specified* | ≥ 295 (43 ksi) | GH3030 has clear yield point |
| Elongation (%) | ≥ 40 | ≥ 30 | GH3044 |
| Modulus of Elasticity (GPa) | ~203 | ~210 | GH3030 stiffer |
| Density (g/cm³) | 8.89 | 8.4 | GH3030 lighter |
Click to download the GH3030 alloy PDF file now
4. Gnee Alloy GH3030 Plate VIM + ESR Manufacturing Advantages
The quality of GH3030 thick plates depends on atomic-level precision. Our manufacturing process ensures a uniform microstructure from surface to core:
VIM (Vacuum Induction Melting): Removes dissolved gases and volatile impurities, resulting in a pure chemical matrix.
ESR (Electroslag Remelting): As a final liquid filtration process, removes non-metallic inclusions and refines the grain structure of the ingot.
Result: Achieves a uniform grain structure (compliant with ASTM E112 Grade 8 and above), maximizing part fatigue life and industrial durability.
5. GH3030 & GH3044 Plate Dimensional Specifications
| Parameter | GH3044 Plate | GH3030 Plate |
|---|---|---|
| Thickness Range | 0.5 – 10 mm (typical) | 0.5 – 50 mm |
| Width Range | 500 – 1200 mm | 500 – 2500 mm |
| Length Range | 1000 – 6000 mm | 1000 – 8000 mm |
| Thickness Tolerance | ±5% – ±10% | ±5% – ±10% |
| Flatness | ≤ 3 mm/m | ≤ 3 mm/m |
| Surface Finish | AP, BA, CR, Polished | AP, BA, CR, Polished |
Common Plate Thicknesses
| Thickness (mm) | Thickness (in) | GH3044 Application | GH3030 Application |
|---|---|---|---|
| 0.5 – 1.0 | 0.020 – 0.040 | Heat shields, liners | Heat shields, thin liners |
| 1.0 – 2.0 | 0.040 – 0.080 | Ducting, liners | Ducting, liners |
| 2.0 – 4.0 | 0.080 – 0.160 | Combustor liners, casings | Engine casings, structural panels |
| 4.0 – 10.0 | 0.160 – 0.400 | Transition ducts, supports | Heavy structural components |
6. GH3030 and GH3044 Technology Comparison and Selection Guide
| Material Grade | Thickness Range | Max Service Temp | Strengthening Mechanism | Primary Advantage |
| GH3044 | 10.0 - 20.0 mm | 950°C (1742°F) | Solid Solution (W & Mo) | Elite stability in flame zones. |
| GH3030 | 10.0 - 20.0 mm | 800°C (1472°F) | Solid Solution (Cr & Ti) | Superior Weldability & Plasticity. |
7. Gnee Alloy GH3030 board inventory and customization services
We maintain a large inventory of standard thickness GH3030 sheets for wholesale, enabling rapid global shipping.
Precise Flatness: We employ advanced multi-roller leveling technology to ensure flatness ≤3mm/m, crucial for automated CNC laser cutting and waterjet cutting.
Custom Sizes: No need to pay for unused material. We can provide precise laser cutting and waterjet cutting services based on your CAD drawings.
Full Traceability: Each sheet comes with an EN 10204 3.1 factory test certificate (MTC), detailing chemical composition analysis and mechanical property verification.
Contact us to customize GH3030 products to fit your project dimensions
Why choose to source from Gnee Alloy factory?
✅️Direct Factory Pricing: Eliminate the 15-20% markup from international trading agents and secure original mill rates.
✅️Ready-to-Assemble Blanks: We can provide pre-drilled and edge-finished plates ready for immediate installation into your furnace or reactor.
✅️Global Logistics: We work with global carriers to provide secure, insured delivery to Europe, USA, and Southeast Asia within 5-7 business days for stock items.
Gnee Alloy GH3030 certificate
Contact us now to get the latest export price for GH4169 in 2026
FAQ
Q1: Is GH3030 interchangeable with Nimonic 75 for thick plate applications?
A: Yes. GH3030 is a Chinese standard that uses the same metallurgical system as Nimonic 75/Alloy 75. It is interchangeable globally and meets all oxidation requirements up to 800°C.
Q2: Why is GH3044 better for "Fire Zone" components?
A: GH3044 is reinforced with Tungsten (W) and Molybdenum (Mo), providing significantly higher creep strength and oxidation stability up to 950°C compared to the foundational GH3030.
Q3: Can you provide plates with PVC or PE protective film?
A: Absolutely. To ensure a zero-defect surface during shipping and processing, we can apply double-sided protective film to your specifications.
Q4: Do you offer bulk discounts for petrochemical refinery overhauls?
A: Yes. As a Reliable Supplier for major energy programs, we provide attractive tiered pricing for large-scale maintenance and construction projects.
