... 25CrMo4, 42CrMo4, 40CrNiMo, 34CrNi3Mo, 25Cr2Ni4MOV, 18CrNiMo5, 30CrMo, 4130, 4140. 5) Gear Related Forgings 35CrMo, 34CrMo4, 4137, 42CrMo, 4140, SCM440, 20CrMnMo, 40CrNiMo ... , 34CrNi3Mo.Ultrasonic Test Sep1921 Class C/c Forged Shafts 42CrMo4+Q/T