Inconel 690 flanges are used primarily in industries that need strong corrosion resistance and high-temperature performance. These include chemical processing plants, nuclear power plants, aeronautical engineering, petrochemical refineries, and seawater desalination facilities. Inconel 690's exceptional corrosion resistance and ability to tolerate severe temperatures make it perfect for essential components like flanges in these demanding applications.

Inconel 690 flanges provide outstanding high-temperature capabilities, with a maximum continuous service temperature of around 1000°C (1832°F). They have great strength and oxidation resistance at high temperatures, making them ideal for harsh conditions such as high-temperature chemical processing, thermal processing units, and power production plants. However, like with other materials, the precise temperature constraints might vary based on the operating conditions and application requirements.

The weight reduction when employing Inconel 690 flanges over steel can be substantial due to Inconel's reduced density. Inconel 690 is roughly 30% lighter than stainless steel, reducing total weight in weight-sensitive applications such as aerospace and automotive. This weight advantage helps increase fuel efficiency and performance in transportation applications while maintaining excellent strength and corrosion resistance.