HEB steel is produced in grades defined by yield strength (MPa), with common types including S235, S275, and S355:
S235: Minimum yield strength 235 MPa, tensile strength 360–510 MPa. Suitable for light loads (e.g., interior beams, small - scale structures).
S275: Yield strength 275 MPa, tensile strength 410–560 MPa. Used for medium loads, such as multi - story residential buildings or industrial sheds.
S355: Yield strength 355 MPa, tensile strength 490–630 MPa. Ideal for heavy - duty applications like bridges, high - rise commercial buildings, and industrial plants.
All grades exhibit excellent ductility (elongation ≥ 21%), allowing plastic deformation under stress without sudden failure-critical for seismic resistance. Additionally, HEB steel offers good fatigue resistance, making it suitable for structures subjected to cyclic loads, such as crane rails or transportation infrastructure.
