Q355c is a kind of steel. It is a low-alloy high-strength structural steel, widely used in bridges, vehicles, ships, buildings, pressure vessels, special equipment, etc., where “Q” means yield strength, and 355 means that the yield strength of this steel is 355MPa, and will vary with As the thickness of the material increases, its yield value decreases.
1. chemical composition
Chemical composition: C: ≤0.24, Si: ≤0.55, Mn: ≤1.60, P: ≤0.035, S: ≤0.035, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.40.
2.Mechanical properties
Yield strength: ≤16mm: ≥355, 16-40: ≥345, 40-63: ≥335, 63-80: ≥315, 100-150: ≥295, 150-200: ≥285, 200–250: ≥ 275
Tensile strength: 450-630.
Impact test: temperature: 0℃: longitudinal ≥ 34, transverse ≥ 27.
Elongation: ≥21.
