Introduction In the world of oil and gas, refining, and chemical processing, material failure is not just an economic issue—it is a safety and environmental catastrophe waiting to happen. One of the most insidious threats to high-performance alloys is Sulfide Stress Cracking (SSC) and Chloride Stress Corrosion Cracking (CSCC) . To combat this, engineers and integrity managers turn to a critical standard: NACE SP0170 .
If you have searched for the term , you are likely looking for the official document, a technical summary, or guidance on how to apply this standard to protect your assets. This article serves as your comprehensive resource. We will explain what NACE SP0170 is, why it is essential, how to obtain the legitimate PDF, and how it differs from other key NACE standards like MR0175/ISO 15156. What is NACE SP0170? 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." nace sp0170 pdf
| Feature | NACE SP0170 | NACE MR0175/ISO 15156 | | :--- | :--- | :--- | | | Shutdown/Startup protection | Materials selection for sour service (H2S) | | Primary Threat | Polythionic acid SCC | Sulfide stress cracking (SSC) and HIC | | Applicability | During maintenance events | During normal operation | | Target Materials | Austenitic stainless steels | Carbon steels, low alloys, CRAs | | Key Measure | Neutralization washing | Hardness control, alloy composition | Introduction In the world of oil and gas,