... status executive standard 5 series ≤3000kg O, F hand forgings 2,67 series ≤3000kg T6,T4,O,F GBn223 5 series ≤2.5m2 ... O, F die forgings 2,6,7series ... ≤2.5m2 T6,T4,O,F ASTMB247 These alloy numbers can be supplied,1035 1040 ... T6,T7,T8,T9,T651,T851,T451,T351,H111,H112,O,H,H12,H16,H18,H19,H22,H24,H116,H32,H36,H321etc ...