公开(公告)号：US20200063248A1

公开(公告)日：2020-02-27

申请号：US16106445

申请日：2018-08-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Daniel J. WILSON ,  James D. Cremonesi ,  Paul J. Gelazin

IPC: C22C38/60 ,  C22C38/42 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00

Abstract: A steel alloy and automotive components, such as crankshafts, produced therefrom are provided. The steel alloy includes iron, about 0.34 to about 0.40 weight percent carbon, about 0.8 to about 1.2 weight percent manganese, about 0.40 to about 0.60 weight percent silicon, about 0.04 to about 0.07 weight percent sulfur, about 0.9 to about 1.2 weight percent chromium, about 0.20 to about 0.35 weight percent molybdenum, about 0.08 to about 0.15 weight percent vanadium, and about 0.02 to about 0.06 weight percent aluminum. The steel alloy may also include up to 0.03 weight percent phosphorus, up to 0.25 weight percent nickel, up to 0.20 weight percent copper, up to 0.03 weight percent titanium, up to 0.03 weight percent nitrogen, and up to 0.002 weight percent boron.