... forged+Normalized+Rough Turned+Q/T. Or Only black Forged steel round bar S20CSpecification:S20CSimilar grade:SAE1020,C20Size:300mm-1200mmDelivery condition; Forged ... 84),ASTM E 112,EN10204Melting process; EAF+LF+VD+Ingot casting(bottom poured)Chemical compostion;C:0.17-0.23; Mn ... ,56NiCrMoV7,S355J2,41Cr4,51CrV4,41CrAlMo7,40NiCrMo7,40NiCrMo3;40CrMoV4-6Tool Steel: H13,1.2714 Forged steel round bar S20C