Special steel bars, Size:90-800mm Black surface and Rough turned bars. Hot forged steel round bar.Grade:ASTM A350LF2Similar steel grade:S355J2G3,16Mn,ST52-3NChemical compostion:C:0.17/0.23; Si:0.15-0.30; Mn:0.90/1.35;P:Max 0.035;S:Max 0.035;Cr:Max 0.30; Mo:Max 0.10;Ni:Max 0.30;Cu:Max 0.30Standard: ASTM A350M-07Delivery state: Hot forged +Normalizing/Annealing+Rough Turned+ Quench+ Temper,.Or Only ...