Are you designing complex combustion chamber components or high-stress turbine fasteners? In the highly competitive aerospace engineering field, the choice between GH3030 and its "improved" sibling, GH3039, is crucial.
One of the most common pain points in forging workshops is cracking and material waste: "If I choose an alloy with higher thermal fatigue strength, will my scrap rate increase during complex forging processes?" As a leading plant direct supplier of high-temperature alloys, Gnee Steel provides the expert advice and high-purity forging materials you need to optimize your production and extend component life.
View real-time GH3030 forging bar inventory and wholesale prices
Comparison of high-temperature resistance of GH3030 and GH3039 round bars
Comparison of high-temperature resistance of GH3030 and GH3039 round bars
GH3030 bars and GH3039 round bars are Chinese nickel-based solid solution strengthened high-temperature alloys, commonly used in the manufacture of structural components requiring high oxidation resistance and high-temperature stability. Both alloys are available in various specifications, including high-temperature alloy round bars for the aerospace, chemical, and power industries.
What is GH3039 material?
GH3039 is a high-temperature alloy, also known as Inconel 713C. It is a nickel-based high-temperature alloy with excellent high-temperature strength, oxidation resistance, and creep resistance.
1.Chemical composition of GH3030 Bar and GH3039 Alloy Bar
| Element | GH3030 (The Plasticity King) | GH3039 (The Performance Step-up) |
|---|---|---|
| Nickel (Ni) | Balance (~80.0%) | Balance (~75-78%) |
| Chromium (Cr) | 19.0 - 22.0% | 19.0 - 22.0% |
| Molybdenum (Mo) | – | 1.80 - 2.30% |
| Niobium (Nb) | – | 0.90 - 1.30% |
| Refining | VIM + ESR | VIM + ESR |
2.Mechanical properties of GH3030 Rod and GH3039 Bar
| Property | GH3030 Round Bar | GH3039 Round Bar |
|---|---|---|
| Tensile Strength (σb) | ≥ 735 MPa | ≥ 700 - 850 MPa |
| Yield Strength (σ0.2) | ≥ 245 MPa | ≥ 300 MPa |
| Elongation (δ5) | ≥ 35% (Superior) | ≥ 30% |
| Impact Toughness | Exceptional | High |
Click to download the GH3030 alloy PDF file now
3.GH3030 Bar and GH3039 Round Bar Properties and Applications
GH3030 Round Bar (UNS GH30 / XH78T)
Properties: Excellent thermal fatigue resistance, superior weldability, and high-temperature stability.
Availability: Available in hot-rolled or cold-rolled round bars, typically with a bright or black finish.
Applications: Primarily used in turbine engine combustion chamber components, afterburner components, and other high-temperature structural parts operating below 1100°C.
GH3039 Round Bar (GH39)
Properties: Excellent oxidation and corrosion resistance, high thermal strength, and good thermal fatigue resistance.
Dimensions: Diameters typically range from 4.00 mm to 400 mm; surface finishes available are bright or polished.
Applications: Similar to GH3030, suitable for high-temperature environments, but generally more suitable for components requiring higher structural strength, such as engine combustion chambers and aerospace defense components.
4. GH3030 Forging Bar Capabilities (10mm - 300mm)
Gnee Steel, as your professional forging bar partner, offers high-quality bars tailored to your workshop needs:
Diameter Range: 10mm to 300mm (rolled or forged bars).
Surface Finishes:
Stripping: Ideal for forging. Stripping removes the oxide layer and exposes all surface inclusions, ensuring a zero-defect start to your stamping operations.
Bright Polishing: Suitable for precision CNC machining workshops requiring h9/h10 tolerances.
VIM + ESR Refining: Our dual-melting process ensures ultra-clean material with uniform grain flow, crucial for meeting aerospace non-destructive testing (NDT) requirements.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
Gnee Steel 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
Contact us for the latest export price quote for GH3030 Alloy
FAQ
Q1: Which alloy is easier to weld after the forging process?
A: Both are highly weldable. However, GH3030 is the industry standard for its ease of Argon Arc and Resistance welding. It is highly forgiving during the assembly of combustion chamber liners.
Q2: Will switching to GH3039 significantly increase my forging scrap rate?
A: Not if your equipment is capable of precise heat control. GH3039 has a narrower "hot-working window" than GH3030. We provide Expert Advice on forging temperatures to help you transition to higher-performance alloys safely.
Q3: Can I get GH3030 bars for making aerospace bolts?
A: Absolutely. Our Bright Ground GH3030 bars are perfect for high-speed CNC bolt manufacturing. The high plasticity ensures that the threads can be cold-rolled without cracking.
Q4: Do you offer Material Test Certificates (MTC) for aerospace projects?
A: Yes. Every order includes a full EN 10204 3.1 Material Certification detailing the VIM+ESR heat analysis and room/elevated temperature mechanical tests.
