... area(m2) or weight(kg) 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 ... 8177 8192 8280 8276These alloy status can be supplied, F,R,T3,T4,T5,T6,T7,T8,T9,T651,T851 ...