: Focuses on storage tanks, piping, and handling equipment used in industrial chemical processes. ANSI Webstore Material Recommendations from the Standard Carbon Steel

A specific form of attack on vertical walls caused by rising hydrogen bubbles that disrupt the protective film.

The benefits of using NACE RP0391 include:

This article provides a deep-dive into everything you need to know about NACE RP 0391—what it contains, why it matters, how to legally obtain the PDF, and how to apply its key principles to avoid catastrophic pipeline failures.

Often used for piping or high-velocity areas. Alloys like 304 and 316 offer better resistance but can still be sensitive to specific concentrations (around 100% acid).