Inconel 625 Superalloy Plate

Performance Characteristics and Applications of Inconel 625 Sheet Metal

1. Performance Characteristics

1.1 Corrosion Resistance
Inconel 625 sheet metal exhibits excellent corrosion resistance in both oxidizing and reducing environments, particularly showing outstanding resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride, seawater, and strong acid media. Its dense chromium oxide protective film effectively prevents further erosion, making it suitable for high salt spray and chemically corrosive environments.

1.2 High-Temperature Performance
This alloy maintains high strength over a wide temperature range (-200°C to 980°C) and can withstand short-term temperatures up to 1150°C. It achieves a tensile strength of 690 MPa at 650°C and a yield strength of 300 MPa at 800°C. It exhibits a low coefficient of thermal expansion and excellent high-temperature creep resistance, ensuring long-term service stability.

1.3 Mechanical Properties
It possesses a tensile strength of 830 MPa and an elongation of 30% at room temperature, combining high toughness and plasticity. Its strength decays slowly at high temperatures, demonstrating outstanding fatigue resistance. With a density of 8.44 g/cm³, it balances strength and weight in lightweight designs.

1.4 Thermal Shock Resistance: Its low coefficient of thermal expansion, high thermal conductivity, and stable microstructure work synergistically to rapidly disperse thermal stress under rapid heating and cooling conditions, preventing crack initiation and making it suitable for environments with severe temperature fluctuations.

2. Main Applications

2.1 Aerospace: Used in the manufacture of aero-engine combustion chambers, turbine blades, and guide components, withstanding high-temperature and high-pressure airflow impacts to ensure structural integrity under extreme conditions.

2.2 Energy and Chemical Equipment: Applied to nuclear power reactor components, high-temperature reactors, and subsea pipelines, resisting chloride corrosion and radiation damage, extending the service life of equipment in highly corrosive media.

2.3 Marine Engineering: Used in seawater desalination plants and marine mining equipment, resisting salt spray corrosion and stress cracking to ensure long-term reliability in deep-sea environments.

2.4 Other Industrial Fields: Including automotive manufacturing exhaust gas treatment systems, environmental protection equipment, and high-temperature chemical pipelines, leveraging its ease of processing and high-temperature stability.