GH3030 Nickel-Chromium Base Superalloy Rod

Premium solution for high-temperature applications (800°C+) with exceptional oxidation resistance and mechanical stability.

High-Temperature Performance: Maintains tensile strength ≥980MPa at 750℃
Oxidation Resistance: Cr content (19-22%) forms protective oxide layer at ≤1100℃
Process Adaptability: Excellent weldability (TIG/spot/seam welding) and cold-forming capability
Microstructural Stability: Single-phase austenitic structure post-solution treatment
Fatigue Resistance: Thermal-mechanical fatigue life 3-5× longer than cast alloys

Chemical Composition (wt%)

Element	Content	Role
Ni	Balance	Matrix stability
Cr	19.0-22.0%	Oxidation resistance
C	≤0.12%	Hardness control
Ti	0.15-0.35%	Grain refinement
Al	≤0.15%	Strength enhancement
Fe	≤1.5%	Impurity control
Si/Mn	≤0.8%/≤0.7%	Ductility preservation
P/S	≤0.03%/≤0.02%	Purity assurance

This alloy bar possesses the following core properties:

1. High-Temperature Stability: Maintains a single-phase austenite structure below 800°C, with a tensile strength ≥550 MPa and no harmful phase precipitation during long-term service.

2. Oxidation Resistance: The dense oxide film formed by chromium ensures oxidation weight gain of less than 2 mg/cm² at 800°C/500h, making it suitable for use in highly oxidizing environments.

3. Processability: Excellent cold-working plasticity after solution treatment (room temperature elongation ≥35%), making it suitable for forging, rolling, and other forming processes.

4. Corrosion Resistance: Excellent resistance to media such as salt spray and sulfides, making it suitable for corrosive chemical environments. GH3030 alloy rods, with their exceptional high-temperature performance, play a key role in multiple industrial sectors:

5. Aerospace: As the preferred material for aircraft engine combustion chamber components and turbine disc mounting flanges, they can withstand low-load conditions below 1100°C, meeting long-term oxidation resistance requirements.

6. Energy Equipment: Used in gas turbine blades and nuclear reactor support structures, their high-temperature creep stability ensures safe operation in the 700-800°C range.

7. Chemical and Petrochemical: Used in the manufacture of high-temperature furnace tubes and reactor internals, they withstand corrosive media like hydrogen sulfide, extending equipment life.

8. Specialty Components: Suitable for applications requiring both strength and lightweight, such as rocket nozzles and spacecraft thermal protection systems, with a density of only 8.4 g/cm³. Certified to standards such as GJB 1952-94, this alloy rod has become a reliable choice for high-temperature, low-stress components.