---
title: "Polythionic Acid Stress Corrosion Cracking"
slug: "polythionic-acid-stress-corrosion-cracking"
updated: 2026-10-27T23:12:43Z
published: 2026-10-27T23:12:43Z
canonical: "ims-handbook.cenosco.com/polythionic-acid-stress-corrosion-cracking"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ims-handbook.cenosco.com/llms.txt
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# Polythionic Acid Stress Corrosion Cracking

## Summary

Polythionic Acid Stress Corrosion Cracking (PTA SCC) (and Polythionic Acid Corrosion) are forms of localised corrosion. They affect austenitic alloys that have been sensitised, and that are exposed to specific conditions.

[PDF document](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/CEN.16.10660%20-%20Polythionic%20Acid%20Stress%20Corrosion%20Cracking(1).pdf?sv=2026-02-06&spr=https&st=2026-10-28T15%3A08%3A12Z&se=2026-10-28T16%3A08%3A12Z&sr=c&sp=r&sig=cn8dHJwMI75cly0VlNj96b9dgqtCrsZpjkE9dYuvO3U%3D)