In the fields of nuclear power and high-pressure vessels, "commercial grade" has ironically become a hidden danger. For nuclear engineers and safety officers, the most challenging issue is sensitivity to trace impurities.
At Gnee Alloy, we eliminate these risks. Our nuclear-grade GH3030 (equivalent to UNS N06075) undergoes special purification to ensure the structural integrity of safety-critical areas.
Click to get a GH3030 product quote
GH3030 heat-resistant nickel alloy for aerospace and nuclear energy applications
GH3030 heat-resistant nickel alloy for aerospace and nuclear energy applications
GH3030 is a solid solution strengthened nickel-chromium-based superalloy with a nickel content of approximately 80% and a chromium content of approximately 20%. It is designed for extreme environments and features excellent mechanical stability, superior oxidation resistance, and excellent thermal fatigue performance up to 800°C.
What are the components of GH3030?
GH3030 is a solid solution strengthened high-temperature alloy, mainly composed of nickel (Ni) and chromium (Cr), with a simple chemical composition. Its typical ratio is 80% nickel and 20% chromium.
1. Overview of GH3030 heat-resistant nickel alloy materials
| Parameter | Description |
|---|---|
| Material | GH3030 |
| Material Type | Wrought Nickel-based Superalloy |
| Strengthening Mechanism | Solid-solution strengthening (Cr + trace Ti) |
| Product Forms | Bar, plate, tube, strip, wire, forging |
| Aerospace Standards | GB/T 14994, GB/T 14997, GB/T 14998, YB/T 5249 |
| Typical Aerospace Applications | Combustion chambers, afterburner components, engine casings, exhaust ducts, high-temperature fasteners, turbine casings |
| Maximum Service Temperature (Load-Bearing) | ~800°C |
| Maximum Service Temperature (Oxidation) | ~1000°C |
| Delivery Condition | Solution treated (annealed) – not age-hardenable |
2. Chemical composition of GH3030 nickel alloy (wt%)
| Element | Content (%) | Function |
|---|---|---|
| Nickel (Ni) | Balance (≥ 75.0) | Matrix element; high-temperature stability |
| Chromium (Cr) | 19.0 – 22.0 | Oxidation and corrosion resistance |
| Iron (Fe) | ≤ 1.5 | Residual element (strictly controlled) |
| Titanium (Ti) | 0.15 – 0.35 | Supplementary solid-solution strengthening |
| Aluminum (Al) | ≤ 0.15 | Prevents harmful phase formation |
| Carbon (C) | ≤ 0.12 | Low carbon for toughness and weldability |
| Manganese (Mn) | ≤ 0.70 | Deoxidizer |
| Silicon (Si) | ≤ 0.80 | Deoxidizer |
| Phosphorus (P) | ≤ 0.030 | Ensures toughness |
| Sulfur (S) | ≤ 0.020 | Ensures hot workability |
| Copper (Cu) | ≤ 0.20 | Residual element |
3. High-temperature mechanical properties of GH3030 nickel alloy
| Temp (°C) | Temp (°F) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Strength Retention (%) | Aerospace Application |
|---|---|---|---|---|---|---|
| 20 (RT) | 68 | ≥ 685 | ≥ 295 | ≥ 30 | 100 | Ground handling |
| 300 | 572 | ~620 | ~270 | ~30 | 90 | Compressor sections |
| 400 | 752 | ~590 | ~260 | ~32 | 86 | Turbine casings |
| 500 | 932 | ~560 | ~250 | ~35 | 82 | Combustor sections |
| 600 | 1112 | ~520 | ~240 | ~38 | 76 | Afterburner inlets |
| 650 | 1202 | ~500 | ~230 | ~40 | 73 | Hot section ducts |
| 700 | 1292 | ~450 | ~220 | ~40 | 66 | Afterburner components |
| 750 | 1382 | ~400 | ~200 | ~42 | 58 | Exhaust ducts |
| 800 | 1472 | ~350 | ~180 | ~42 | 51 | Peak operating temp |
| 850 | 1562 | ~300 | ~150 | ~44 | 44 | Short-term only |
| 900 | 1652 | ~250 | ~120 | ~45 | 36 | Emergency only |
Click to download the GH3030 alloy PDF file now
Features and applications of GH3030 and GH3039
GH3030 (UNS GH30 /XH78T)
Composition: Primarily composed of approximately 80% nickel (Ni) and approximately 20% chromium (Cr).
Temperature Range: Excellent hot strength and high ductility below 800°C; good oxidation resistance below 1100°C.
Properties: Excellent cold stamping, welding, and hot working properties.
GH3039 Alloy
Composition: A nickel-chromium based alloy with controlled additions of elements such as molybdenum (Mo) and niobium (Nb) to enhance solid solution strengthening.
Temperature Range: Typically used in slightly higher stress environments, exhibiting excellent long-term stability and strength at high temperatures (typically between 800°C and 900°C).
Properties: Compared to GH3030, it offers better creep resistance and structural stability at higher operating temperatures.
6. GH3030 Alloy Aerospace Applications
GH3030 possesses excellent heat resistance and oxidation resistance, making it a commonly used material in the aerospace field. Common applications include: aircraft engine combustors and afterburners; high-temperature turbine blades and exhaust systems; and precision structural components requiring resistance to thermal fatigue.
7. GH3030 Alloy Nuclear Energy Applications
GH3030's chemical stability and corrosion resistance ensure extremely high reliability in harsh power generation environments. It is widely used in: nuclear reactor pressure vessels and internal components; advanced heat exchangers and petrochemical piping networks; and specialized high-temperature resistors and thermocouple sheaths.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
As a Reliable Supplier to the global energy sector, we provide the documentation and quality required to pass international inspections:
✅️ASME BPVC Compliance: Our materials are processed to meet the requirements of the ASME Boiler and Pressure Vessel Code.
✅️100% NDT Integrity: Every forged bar and seamless tube undergoes Ultrasonic Testing (UT) to AMS 2154 Class A standards.
✅️Total Traceability: Every milligram is documented from raw melt to final product with full Mill Test Certificates (MTC 3.1 & 3.2).
✅️Wholesale Pricing: Benefit from Direct Factory Price on bulk tonnage for nuclear infrastructure projects.
Gnee Alloy GH3030 Certificate
📦 Packaging and Shipping
All Nickel Based Alloy products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Alloy GH3030 Product Packing
⚒️Gnee Alloy Production Line Equipment and Product Testing
Contact us for the latest export price quote for GH3030 Alloy
FAQ
Q1: Is GH3030 interchangeable with Nimonic 75 for nuclear blueprints?
A: Yes. GH3030 is the equivalent material for the UNS N06075 system in the global nuclear power blueprint. It is a proven high-temperature gas-cooled reactor structural material.
Q2: How do you handle the "Low Cobalt" requirements common in nuclear specs?
A: As a specialized Manufacturer, we perform customized VIM melts using ultra-pure raw materials to hit specific Cobalt (Co) targets required to minimize radiation hazards in core components.
Q3: Can you provide third-party witness testing for nuclear audits?
A: Absolutely. We regularly host inspectors from SGS, TUV, and Lloyd's Register to witness mechanical testing and chemical analysis before material release.
Q4: Do you offer cut-to-size services for heavy-wall forged blocks?
A: Yes. We offer precision bandsaw cutting to provide ready-to-machine blanks, saving you significant labor and material waste.
