ASTM A105 – Carbon Steel Forgings for Piping Applications  Chemical Compositions (max, %) C 0.35 Mn 0.60-1.05 P 0.035 S 0.040 Si 0.10-0.35 Cr 0.30 Cu 0.40 Mo 0.12 Ni 0.40 V 0.08 Notes: 1) For each reduction of 0.01% below the specified C maximum(0.35%), an increase of 0.06% Mn above the specified maximum (1.05%) will be permitted up to…