Q: What is the hardness range of Q355 steel plate?
A: The Brinell hardness (HBW) is generally between 137 and 217, with slight fluctuations depending on the thickness and delivery condition.
Q: What are the weldability properties of Q355 steel plate?
A: It has good weldability and can be welded using conventional methods such as arc welding and gas shielded welding. Preheating is generally not required before welding (except for thick plates or low-temperature environments).
Q: Can Q355 steel plate be cold-stamped?
A: Yes. Q355 steel plate has good plasticity and is suitable for cold stamping, bending, and other forming processes.
Q: What is the hot working temperature range of Q355 steel plate?
A: The heating temperature is 1150~1200℃, and the final rolling temperature should not be lower than 850℃ to ensure grain refinement of the steel.
Q: Can Q355A steel plate be used to manufacture pressure vessels?
A: No. Q355A does not undergo impact testing and has poor toughness; pressure vessels must use at least Q355B or higher grade.