Chemical Composition: Carbon C: ≤ 0.07 Silicon Si: ≤ 1.00 Manganese Mn: ≤ 2.00 Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035 Nnickel Ni: 8.00 ~ 11.00

Mechanical Properties: Tensile strength σb (MPa): ≥ 520 Conditions yield strength σ0.2 (MPa): ≥ 205
Elongation δ5 (%): ≥ 40 Reduction of area ψ (%): ≥ 60 Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV