Stainless steel 309S is a high-alloy stainless steel that is a low-carbon version of 309 stainless steel. The chemical composition of stainless steel 309S mainly contains elements such as chromium, nickel and molybdenum, and also contains a small amount of elements such as carbon, manganese and silicon.
Stainless steel 309S has excellent high-temperature oxidation resistance and corrosion resistance, and is especially suitable for various equipment and components in high-temperature environments. The specific features are as follows:
good high temperature performance
Stainless steel 309S has good high temperature performance, and has high strength, corrosion resistance and oxidation resistance at high temperatures. The maximum service temperature of stainless steel 309S can reach 1000°C.
Corrosion resistance
Stainless steel 309S has good corrosion resistance, and has good resistance to corrosive media such as general acids, alkalis, and salt water, but its corrosion resistance is relatively poor in media such as strong oxidizing acids, hydrochloric acid, and chlorides.
Welding performance
Stainless steel 309S has good welding performance, and it is not easy to produce defects such as intergranular corrosion and cracking during the welding process.
Application field
Stainless steel 309S is widely used in various equipment and components in high-temperature environments such as high-temperature furnaces, furnace components, heat treatment equipment, chemical equipment, petrochemical, and electric power industries.
In general, stainless steel 309S is a high-temperature, corrosion-resistant high-quality stainless steel material, suitable for various equipment and components in high-temperature environments.
