Forged Shaft Material 42CrMo,42CrMo4,CK45,16Mn, Heat Treatment Normalizing,Quechning+Tempering. Applications ... , Coupling, RPV Stud Bolt, Pump ShaftMaterial Standard:GB, BS, ASTM, EN, DIN, AISI, JISForged shaft Material :Carbon steel, alloy steel, stainless steel ... , 34CrNi3Mo.Ultrasonic Test Sep1921 Class C/c Forged Shafts 42CrMo4+Q/T