... /42 , 39NiCrMo3 4130, 4340, 42CrMo4V, and so on Commodity: forged shaft 1.Material: alloy steel ,carbon steel ,stainless steel .2.Ultra ... 1921 Group III C/c or D/d3.Delivery condition: forged + finish machined, annealed, normalized, quenched & tempered, etc. 4. ... Steel Co., Ltd.Note: we can supply the shaft according the customer's drawing of different size and requirment . Forged shaft (34CrNiMo6)