A: Partially. Duplex stainless steels are less prone to polythionic acid SCC because they have lower austenite content and greater resistance to sensitization. However, SP0170 recommends that if a duplex alloy has seen service above 300°C (572°F), similar precautions should be considered.
It is important to note that NACE International (now part of AMPP - Association for Materials Protection and Performance) is a standards organization. As such, NACE SP0170 is a copyrighted document.
While you may find "unofficial" copies floating around the web, relying on them can be risky. Unofficial PDFs may be outdated, missing pages, or contain unauthorized alterations to the technical data. nace sp0170 pdf
The best way to access the PDF:
Why buy it? Compliance audits often require proof that your team is using the most current, official version of the standard. An official PDF ensures you have the correct data for your safety protocols. A: Partially
If you work in the oil and gas, petrochemical, or heavy industrial sectors, you know that corrosion isn't just a maintenance issue—it’s a safety and financial crisis waiting to happen.
Specifically, if you deal with vessels, tanks, or piping that sit idle or operate at temperatures that allow moisture to gather, you are fighting a silent enemy: Under-Deposit Corrosion. Why buy it
This is where NACE SP0170 becomes the industry bible. If you’ve been searching for the NACE SP0170 PDF to clarify your preservation protocols, this post breaks down exactly what the standard covers, why it matters, and how to use it effectively.
Based on field experience, here are the top five implementation tips for using the nace sp0170 pdf effectively:
NACE SP0170 (formerly designated NACE RP0170) is a standard practice titled: "Protection of Austenitic Stainless Steels and Other Austenitic Alloys from Polythionic Acid Stress Corrosion Cracking During Shutdowns and Start-ups."
Developed by the Association for Materials Protection and Performance (AMPP), which now manages the former NACE standards, this document provides proven methodologies to prevent a specific type of cracking that occurs in sensitized austenitic stainless steel.