... US Standard:AISI1020,AISI1040,AISI1045,AISI1050;Europe Standard:CK15,C.22,C45,CK45,C60,CK60;C45E;Alloy Steel: ... sonic test: as per SEP 1921 Group III C/c,D/d,E/e;As forged condition straightness: ≤ ... 4mm/m, RT bar straightness: ≤2mm/mAs forged diameter tolerance: ... /QT conditionNon-metal inclusion: as per ASTM E45 A/B/C/D heavy ≤2, thin ≤2.5Quantity: 15MT or ...