Knowledge

AH32 marine high-strength steel welding process guide

This paper focuses on the most critical welding challenges encountered on shipbuilding sites. We have reviewed the primary welding processes, the selection of welding consumables and preheating specifications applicable to AH32 steel, and outlined control measures for common defects such as cold cracks and embrittlement in the heat-affected zone. This has resulted in the development of standardised welding procedures that are practical for on-site application and fully compliant with mainstream shipbuilding codes.