---
title: "Wet CO2 Corrosion"
slug: "wet-co2-corrosion"
updated: 2026-10-27T23:12:43Z
published: 2026-10-27T23:12:43Z
canonical: "ims-handbook.cenosco.com/wet-co2-corrosion"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ims-handbook.cenosco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Wet CO2 Corrosion

Carbon dioxide gas (CO2), when dissolved in water, forms carbonic acid (H2CO3). This acid may attack metallic equipment, in particular carbon steels and low-alloy steels. Stainless steels are usually immune to wet CO2 corrosion. Wet CO2 corrosion can be relatively uniform (i.e., general corrosion), but more often occurs in the form of pitting, grooving, or the so-called "mesa attack" (protected, scale-covered area co-exists with corroded areas of fresh metal).

[PDF document](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/CEN.16.11752 - Wet CO2 Corrosion.pdf?sv=2026-02-06&spr=https&st=2026-10-28T14%3A21%3A34Z&se=2026-10-28T15%3A21%3A34Z&sr=c&sp=r&sig=9JWja8HrUwnnYNi%2FO3B%2Bji2T2bOl5cpz5ShSQiGnLms%3D)