Yield strength for thickness ≤ 16mm?
≥ 235MPa.
How does the yield strength change for thickness > 16mm?
16mm < thickness ≤ 40mm: ≥ 225MPa; > 40mm: gradually decreases with increasing thickness; > 150mm: ≥ 185MPa.
Tensile strength range?
370-500MPa.
Elongation requirements?
Thickness ≤ 40mm: ≥ 26%; > 40mm: slightly decreases with increasing thickness; > 150mm: ≥ 21%.
Cold bending performance requirements?
Longitudinal steel: Thickness ≤ 16mm: bending mandrel diameter d = a; > 16mm: d = 2a; Transverse steel: Thickness ≤ 16mm: d = 1.5a; > 16mm: d = 2.5a.