● Mechanical Properties: Tensile strength σb (MPa): quenching and tempering, ≥735 Conditions yield strength σ0.2 (MPa): quenching and tempering, ≥540 Elongation δ5 (%): quenching and tempering, ≥12 Reduction of area ψ (%): quenching and tempering, ≥40 Impact energy Akv (J): quenching and tempering, ≥24 Hardness: annealing, ≤235HB; quenching and tempering, ≥217HB |