Forged Round bars Grade: C45( CK45/ S45C) , 42CrMo4( SCM440, SAE4140) , 16MnCrS5, S355J2G3, ST52-3, A STM A105, 18CrNiMo7-6, SCM415, 34CrNiMo6( SAE4340) , 39CrNiMo3, 18CrNiMo5, 20CrNiMo2, SK D61( H13) ....