Yield Strength?
≥345MPa (slightly lower for thicknesses > 16mm, e.g., ≥325MPa for 16-35mm).
Tensile Strength?
470~630MPa.
Elongation after Fracture?
≥21%.
Impact Toughness (Akv)?
A: No requirement
B: +20℃ ≥34J
C: 0℃ ≥34J
D: -20℃ ≥34J
E: -40℃ ≥34J.
Hardness Range?
Hot-rolled state: approximately HB 137~170.