Incoloy 800H Alloy Bars

Incoloy 800H alloy is a nickel-chromium-iron-based superalloy designed for extreme environments, combining excellent high-temperature stability and corrosion resistance. The following is a detailed analysis of its performance characteristics and applications:

1. Performance Characteristics
1.1 High-Temperature Strength and Stability
Incoloy 800H exhibits excellent creep and crack resistance in the 850°C to 1100°C range, maintaining high strength (tensile strength ≥ 620 MPa) and toughness at high temperatures, making it suitable for equipment subjected to long-term high-temperature stresses. Its grain structure is optimized through solution treatment, significantly improving stress rupture life.

1.2 Oxidation and Corrosion Resistance
The high chromium content (19%-23%) forms a dense oxide film, resisting high-temperature oxidation and attack by various corrosive media (such as acidic environments and sulfur-containing atmospheres). The synergistic effect of nickel (30%-35%) and trace amounts of molybdenum and aluminum further enhances corrosion resistance, particularly in organic acid and chloride environments.

1.3 Processing and Welding Properties
This alloy exhibits excellent formability and can be processed through processes such as forging and rolling. The heat-affected zone (HAZ) hardening after welding is minimal, and the joint strength approaches that of the parent metal, facilitating the fabrication of complex structures.

2. Main Applications
2.1 Energy and Power Industry
It is used in power plant boiler tubes, steam piping, and nuclear reactor cooling systems, ensuring safe operation and extending the service life of equipment in high-temperature and high-pressure environments.

2.2 Petrochemical Industry
It is widely used in oil refining equipment, high-temperature and high-pressure piping, and reactors, resisting corrosion from corrosive media (such as nitric acid and acetic acid) and improving equipment reliability.

2.3 Aerospace and Industrial Equipment
It is used in the manufacture of gas turbine components, heat exchangers, and industrial furnace parts, where its fatigue and oxidation resistance meet the demands of demanding operating conditions.

In summary, Incoloy 800H alloy, with its comprehensive properties, has become a key material for high-temperature and corrosive environments, promoting the efficient and safe development of industrial equipment.