Delivery Status?
Hot-rolled, controlled-rolled, normalized, TMCP (Thermomechanical Rolling).
Weldability?
Good, moderate carbon equivalent; thick plates (>25mm) require preheating to 100~150℃ to prevent cold cracking.
Common Welding Materials?
E50 series welding electrodes (e.g., E5015), ER50-6 welding wire, H08MnA flux.
Cold Bending Performance?
Qualified, no cracks after bending 180°; requires a larger bending radius (≥2t) to prevent cracking.
Heat Treatment Process?
Normalizing: Air cooling at 890~920℃ to refine grains and improve toughness.
Tempering: Air cooling at 600~650℃ to eliminate internal stress.