The EN 10225-1 PDF standard was first published in 2009 by the European Committee for Standardization (CEN), with the aim of providing a harmonized European standard for weldable structural steels. The standard has undergone several revisions, with the latest version being EN 10225-1:2019.
To ensure excellent weldability (low carbon equivalent), the standard places strict limitations on carbon (C), manganese (Mn), silicon (Si), and trace elements like phosphorus (P) and sulfur (S). en 102251 pdf