Cold working performance (bending/stamping)?
Excellent, good cold bending performance, minimum bending radius approximately 0.5t.
22. Can it be quenched to increase hardness?
Low carbon steel has poor quenching effect, with limited hardness increase; carburizing can increase surface hardness.
23. Common heat treatments?
Stress-relief annealing: 600~650℃, eliminates cold working/welding stress.
Normalizing: improves microstructure and stabilizes properties.
Q235 main advantages?
Extremely high cost-effectiveness.
Good plasticity and toughness, not prone to brittle fracture.
Excellent welding and cold working performance.
Easy to procure, complete specifications.
25. Q235 main disadvantages?
Medium strength, not suitable for heavy-duty critical components.
Moderate hardness and wear resistance.
Prone to rusting (without protection).