Q: What is the delivery condition of Q235 coil?
A: It is usually delivered in hot-rolled condition. Surface treatments such as pickling, annealing, or oiling can be performed upon request.
Q: What is the tensile strength range of Q235 coil?
A: The tensile strength range is 375～500MPa.
Q: What is the elongation requirement for Q235 coil?
A: Elongation δ₅≥26% (when steel thickness ≤16mm). The elongation requirement decreases slightly for thicker steel.
Q: What is the impact test temperature for Q235D coil?
A: Q235D requires impact testing at -20℃, with an impact absorption energy ≥27J.
Q: Can Q235 coil be cold-bent?
A: Yes. The cold bending test requirements are: bending mandrel diameter d = α × steel thickness a (α is adjusted according to grade and thickness, such as d = 0.5a when the thickness is ≤16mm), and no cracks on the sample surface after bending 180°.