Nace Rp0472 Pdf Jun 2026

Specifically covers P-No. 1 carbon steels, often having a minimum specified tensile strength of up to 485 MPa (70,000 psi).

: It addresses various forms of damage including Sulfide Stress Cracking (SSC), Stress-Oriented Hydrogen-Induced Cracking (SOHIC), and Alkaline Stress Corrosion Cracking (ASCC). nace rp0472 pdf

RP0472 requires hardness measurements in the weld root (the inside of the pipe). Many fabricators only test the cap. The root is usually the hardest spot due to rapid cooling. Open your PDF to Section 4.3 – "Locations for Hardness Testing." Specifically covers P-No

If you are writing a new spec today, order . That is the last stable version before the numbering system changes. Specifically covers P-No. 1 carbon steels