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Forged steel alloy steel 45Cr C45 C25 C35 C55Cr 45Cr+S Forged bars Chemical Composition C Si Mn Cr P S V Ni Mo 0.42-0.50 ≤0.4 0.5-0.8 0.90-1.20 ≤0.030 ≤0.035 / / / Material C45 S45C 1045 080A47 Forged ...