NACE SP0170-2018

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Protection of Austenitic Stainless Steels and Other Austenitic Alloys from Polythionic Acid Stress Corrosion Cracking During a Shutdown of Refinery Equipment

Published By	Publication Date	Number of Pages
NACE	2018-09-10	16

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Category: NACE

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Description

Full Description

This standard practice provides mitigation methods to protect austenitic stainless steels and other austenitic alloys from polythionic acid (PTA) stress corrosion cracking (SCC) that can occur during a shutdown of refinery equipment. This standard is directed toward preventing stress corrosion cracking (SCC) caused by polythionic acid (PTA) that can be formed by reaction of oxygen and water with sulfide corrosion products (i.e., metal sulfides) or with other oxidizable sulfur species (e.g., sulfur, hydrogen sulfide [H₂S]). This standard is maintained by Task Group 173.

Additional information

Published Code	NACE
Published By	National Association of Corrosion Engineers
Publication Date	2018-09-10
Pages Count	16
Language	English
Descriptors	Refineries, austenitic stainless steels, stress corrosion cracking (SCC), polythionic acid
File Size	1.3 MB
ISBN	1-57590-039-4

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NACE SP0170-2018

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