The processing performance of S355J0WP weathering steel is comparable to standard structural steels but requires slight adjustments due to its alloy composition. Here's a concise breakdown:
Formability:
Can be cut, bent, and formed like ordinary carbon steel (e.g., S355), but its higher strength may require more force.
Pre-heating (100–150°C) is recommended for cold bending/thick sections to avoid cracking.
Welding:
Weldable using common methods (SMAW, MIG, TIG), but use low-hydrogen electrodes (e.g., AWS E7018-W) to match corrosion resistance.
Pre-/post-weld heat treatment is advised for thick plates (>20mm) to prevent brittleness.
Machining:
Harder than mild steel due to alloying elements (Cu, P, Cr); use carbide tools and slower speeds for optimal results.
Corrosion Protection During Processing:
Avoid contaminating surfaces (e.g., grease, carbon steel dust) to preserve weathering properties.
