What is 309S Stainless Steel Plate?

309S stainless steel plate is a high-alloy austenitic stainless steel material. It is primarily composed of chromium (Cr), nickel (Ni), molybdenum (Mo), and a small amount of titanium (Ti), among other elements.

Chemical Composition:

Chromium (Cr): Approximately 22-24%, providing excellent corrosion resistance.

Nickel (Ni): Around 12-15%, enhancing oxidation resistance and high-temperature performance.

Molybdenum (Mo): About 2-3%, improving resistance to high-temperature corrosive environments.

Titanium (Ti): Approximately 0.15-0.30%, preventing intergranular corrosion during welding.

Key Features:

High Temperature Resistance: 309S can maintain stability in high-temperature environments, exhibiting superior thermal resistance.

Oxidation Resistance: The chromium and nickel content allows the formation of a dense oxide layer, offering excellent protection against oxidation.

Corrosion Resistance: It demonstrates good resistance to acids, alkalis, and salt corrosion.

Intergranular Corrosion Resistance: The low carbon content and the presence of titanium effectively reduce the risk of intergranular corrosion.

Good Workability: 309S stainless steel plate is easy to process, bend, and weld, making it suitable for various manufacturing techniques.

Applications:

Due to its high-temperature resistance, corrosion resistance, and excellent workability, 309S stainless steel plate is widely used in industries such as petrochemical, chemical, and metallurgy. It is particularly suited for applications in high-temperature and corrosive environments.