In the field of high-performance R&D, the selection of high-temperature alloys depends not only on temperature but, more importantly, on their strengthening mechanism. Are you designing high-temperature seals that need to withstand extreme deformation, or structural bolts that must resist creep under heavy loads?
Gnee Stele, a trusted Chinese manufacturer of high-temperature alloys, provides technical data sheets and professional guidance to help you bridge the gap between high plasticity and ultimate creep strength.
Contact our professionals to recommend alloys suitable for your project
How to choose between GH3030 steel plate and Nimonic 80A steel plate?
How to choose between GH3030 steel plate and Nimonic 80A steel plate?
The choice between GH3030 and Nimonic 80A steel plates depends primarily on the required operating temperature, load requirements (stress level), and budget. Both are nickel-chromium-based superalloys, but Nimonic 80A is a superior precipitation-hardening alloy designed for higher stresses and temperatures, while GH3030 is a solid-solution-strengthened alloy better suited for medium loads and highly oxidizing environments, with maximum temperatures reaching 800°C to 900°C.
What is GH3030 material?
GH3030 is a high-temperature nickel-based superalloy primarily used in components requiring high oxidation resistance and thermal stability. Due to its excellent performance in high-temperature environments, GH3030 is widely used in the aerospace and power generation industries.
GH3030 Steel Plate
GH3030 is a domestically produced solid solution strengthened nickel-chromium superalloy (80Ni-20Cr), renowned for its structural stability, excellent oxidation resistance, and good cold and hot working properties.
Manufacturing Process: Solid solution strengthening.
Main Characteristics: High plasticity, low strength, excellent corrosion resistance, and excellent weldability.
Operating Temperature: Typically used for components operating below 800℃.
Nimonic 80A Steel Plate
Nimonic 80A (UNS N07080) is a precipitation-hardening nickel-chromium alloy, similar to Nimonic 75, but with added aluminum and titanium to enhance its high-temperature performance.
Manufacturing Process: Precipitation hardening (through the addition of aluminum and titanium).
Key Properties: Excellent creep rupture properties, high tensile strength (1000-1200 MPa after aging), excellent corrosion/oxidation resistance at high temperatures.
Operating Temperature: Up to approximately 815°C.
1.Quick Selection Guide
If you require high strength, excellent creep resistance, and the ability to withstand high sustained stress at temperatures up to 815°C (e.g., turbine blades, exhaust valves), choose Nimonic 80A.
Nimonic 80A for turbine blades
If you require good corrosion/oxidation resistance and the ability to withstand low to moderate loads at temperatures below 800°C (e.g., combustion chambers, furnace components), choose GH3030.
GH3030 for combustion chamber lining
2.Chemical composition (wt%) of GH3030 plate and Nimonic 80A alloy plate
| Element | GH3030 (Solid Solution) | Nimonic 80A (Age-Hardening) | Impact on Your Project |
| Nickel (Ni) | Balance (~80.0%) | Balance (~72-75%) | Ductility vs. Strength Matrix |
| Chromium (Cr) | 19.0 - 22.0% | 18.0 - 21.0% | Both offer elite Oxidation Resistance |
| Titanium (Ti) | 0.15 - 0.35% | 1.8 - 2.7% | Ti enables the 80A Aging Process |
| Aluminum (Al) | ≤ 0.15% | 1.0 - 1.8% | Al forms the
γ′γ′ strengthening phase |
| Refining | VIM + ESR | VIM + ESR | Premium Quality Purity |
3.Mechanical properties (standard condition) of GH3030 steel plate and Nimonic 80A alloy steel plate
| Property | GH3030 Plate | Nimonic 80A Plate (Aged) |
| Tensile Strength (σbσb) | ≥ 735 MPa | ≥ 1000 MPa |
| Yield Strength (σ0.2σ0.2) | ≥ 245 MPa | ≥ 620 MPa |
| Elongation (δ5δ5) | ≥ 35% (Excellent) | ≥ 20% |
| Hardness (HB) | 150 - 200 | 250 - 350 |
| Fabrication | Easy (Stamping/Drawing) | Moderate (Better for Machining) |
Click to download the GH3030 alloy PDF file now
4.Applications of GH3030 and Nimonic 80A Steel Plates
GH3030 Steel Plate: Common applications include aircraft engine combustion chambers, afterburners, and heat-resistant components requiring high oxidation resistance.
Nimonic 80A Steel Plate: Common applications include gas turbine blades, rings, discs, bolts, nuclear generator tube supports, and racing engine exhaust valves.
Contact us now to get the latest export price for GH3030 in 2026
4. Why Choose Gnee Steel?
As your technology supply chain partner, Gnee Steel offers high-quality products supported by rigorous science:
VIM + ESR Precision Processing: Both alloys utilize a dual-melting process to ensure ultra-low gas content (O, N, H), resulting in consistent aging response and fatigue life.
MRO and R&D Support: We maintain a large inventory of sheet metal from 0.5mm to 50mm in thickness and can provide custom sizes via precision waterjet cutting and laser cutting.
Transparent Technical Data Sheets: Every shipment comes with a material certificate conforming to EN 10204 3.1, containing complete traceability data on chemical and mechanical properties.
GH3030 certificate
Check the real-time inventory of GH3030 and 80A sheets
FAQ
Q1: Can I use Nimonic 80A without aging treatment (solution treatment)?
A: Yes, but the strength won't be much higher than GH3030. To achieve its age-hardened strength, 80A must undergo two-stage heat treatment. As a trustworthy Chinese manufacturer, we can provide plates in different states according to your processing needs.
Q2: Which alloy is more suitable for high-temperature gas sealing?
A: GH3030 is generally more suitable for flexible sealing because of its high ductility and excellent weldability. For thin flexible bellows, Nimonic 80A is usually too hard and prone to cracking.
Q3: How does the VIM+ESR process affect the aging of Nimonic 80A?
A: Purity is crucial. Our VIM+ESR refining process ensures a uniform distribution of Ti and Al. This results in more uniform γ-phase precipitation, preventing localized soft spots on the plate.
Q4: Do you offer wholesale prices to research institutions?
A: Yes. We offer factory wholesale prices to R&D institutions worldwide, even for small-batch pilot production, helping you transition from prototype to mass production without exceeding your budget.
