Q235B/Q355B steel channel
Q235B: It is a carbon structural steel, with a chemical composition of carbon (C) ≤ 0.22%, manganese (Mn) ≤ 1.4%, silicon (Si) ≤ 0.35%, etc. Its yield strength is 235MPa, and its tensile strength is between 370-500MPa. It has certain strength and good plasticity, toughness and welding properties. Q355B: It is a low-alloy high-strength structural steel with a high manganese content, a yield strength of ≤ 355Mpa, and a tensile strength of 470-630MPa. Compared with Q235B, Q355B has higher strength, can withstand greater pressure and tension, and has better performance.
