Kiran Enterprises holds a leading position as a supplier and exporter of Duplex Steel UNS S31803 Flat Bars, trusted by customers across various industries. These flat bars are widely used in chemical process vessels, piping, heat exchangers, pulp mill digesters, bleach washers, chip pre-steaming vessels, and more. They offer high resistance to abrasion, erosion, and cavitation erosion. The corrosion resistance of duplex stainless steel is superior to that of commonly used stainless steel grades like 304 and 316. Additionally, Duplex Steel UNS S31803 is frequently used in the pulp and paper industry for digesters, bleaching equipment, and stock-handling systems. However, descaling this material can be somewhat more challenging compared to Type 304. Alkali immersion before acid pickling and, if possible, shot blasting are highly effective solutions. We also provide custom specifications for these products to meet unique requirements.

What is UNS S31803 material?

UNS S31803 is a duplex stainless steel that combines austenitic and ferritic phases, also known as Duplex 2205. It is known for its outstanding corrosion resistance and high strength. This material offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-containing environments. Additionally, UNS S31803 has good mechanical properties, including high yield strength and good ductility, making it a popular choice for applications in harsh and corrosive environments.

Is Duplex UNS S31803 corrosion resistant?

Yes, Duplex UNS S31803 is highly corrosion-resistant. Its combination of ferritic and austenitic phases gives it the advantageous properties of both austenitic and ferritic stainless steels, though there may be some compromise in performance compared to pure austenitic or ferritic grades. This balanced composition provides a superior resistance to corrosion, particularly in environments containing chlorides.