The most recent version of this standard is NACE SP0472-2020
: Focuses on material hardness, welding procedures, and PWHT to prevent cracking. Hardness Limit nace rp0472 pdf new
Summary: If you are looking for the latest requirements to prevent environmental cracking in carbon steel weldments, do not use NACE RP0472. You must use AMPP SP0472-2023. The most recent version of this standard is
: Generally specifies a maximum weld deposit hardness of 200 HB. nace rp0472 pdf new
Overview
Alkaline Stress Corrosion Cracking (ASCC): Cracking caused by specific refinery environments like amine or caustic services. 2. The Role of Hardness Control