Which Material is Susceptible to CO² Corrosion?

What material is most susceptible to CO² corrosion?

A. Carbon steel
B. Stainless steel
C. Duplex stainless steel
D. Both B and C

Answer:

Among the options provided, Carbon steel is the most susceptible to CO² corrosion. This is due to its capacity to form iron carbonate in the presence of CO², leading to its deterioration. Whereas, Stainless steel and Duplex stainless steel are designed to be more corrosion-resistant.

The material that is most susceptible to CO² corrosion among those listed is carbon steel. While all metals can potentially be affected by corrosion, carbon steel is particularly vulnerable to CO² corrosion due to its composition. In the presence of CO², carbon steel can form iron carbonate, which leads to the deterioration of the material. Conversely, stainless steel and duplex stainless steel are designed with additional alloyed elements, such as chromium and nickel, which give these materials their corrosion resistance characteristics. Therefore, options B and C, Stainless steel and Duplex stainless steel, aren't as susceptible to corrosion as carbon steel.

This explanation should provide a basic understanding of the susceptibility of the different materials to CO² corrosion.