Key mechanical properties of GB angle steel (e.g., Q235B grade) include:
Yield Strength: ≥235 MPa, defining the stress threshold for permanent deformation. This makes it suitable for general structural supports in buildings and bridges.
Tensile Strength: 375–500 MPa, ensuring resistance to fracture under extreme loads, such as wind or seismic forces.
Elongation: ≥26%, enabling plastic deformation to absorb impact energy, crucial for earthquake-resistant structures.
Modulus of Elasticity: ~206 GPa, minimizing deflection in beams and braces.
For high-strength applications, Q355 grade (yield ≥355 MPa) is preferred, such as in large-span industrial halls or heavy machinery frames.