... ,B16,F11,F12,F22,F5,F9,51Cr4. ALLOY STRUCTURAL STEEL BAR GRADES CHEMICAL COMPOSTIONS% % JISAISIDINCSiMnPSNiCrMoOTHERS40Mn2SMn438134042Mn60.37 0.440.17 0.371 ... )2. Delivery condition: Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)or cold-drawn.3. Technical Data: According ... details will be as per agreed technical specifications round steel bar/alloy steel ...