... ,SAE4340,AISI4145H,SAE4150,SAE8620;42CrMo4,25CrMo4,34CrNiMo6,39CrNiMo3,17NiCrMo6,18CrNiMo7-6,S355J2G3,ASTM A105,ST52-3,16MnCr5,20MnCr5,16MnCrS5,20MnCrS5,21CrMoV511 ... :ASTM E112-96 > Level 5 or better under annealing state;Non Metallic Inclusion:ASTM E45 A/B/C/D heavy ≤2, thin ...