Q235 Yield Strength Standard?
≤16mm: ≥235MPa; 16-40mm: ≥225MPa; >100mm: ≥185MPa.
Tensile Strength Range?
375-460MPa, moderate strength, balancing load-bearing capacity and deformation.
Elongation After Fracture Requirement?
≤16mm: ≥26%, good plasticity, strong seismic energy absorption.
Impact Performance Differences?
A: None; B: ≥27J at 20℃; C: ≥27J at 0℃; D: ≥27J at -20℃.
Cold Bending Performance?
Passes 180° cold bending, bending mandrel diameter d=1.5a (a = thickness), no cracking during bending.