Title:
STEEL FOR VEHICLE WHEEL
Document Type and Number:
Japanese Patent JP2013231212
Kind Code:
A
Abstract:
To provide steel for vehicle wheels excellent in balance between wear resistance, rolling fatigue resistance, and spalling resistance; having enhanced high-temperature yield strength and high ductility; and giving long life to wheels.
Steel for vehicle wheels includes, in terms of mass%: 0.65-0.84% of C; 0.4-1.0% of Si; 0.50-1.40% of Mn; 0.02-0.13% of Cr; ≤0.04% of S; 0.02-0.12% of V, wherein Fn1 represented by formula (1) is 32-43 and Fn2 represented by formua (2) is ≤25; and the remainder Fe and impurities. Fn1=2.7+29.5×C+2.9×Si+6.9×Mn+10.8×Cr+30.3×Mo+44.3×V (1). Fn2=exp(0.76)×exp(0.05×C)×exp(1.35×Si)×exp(0.38×Mn)×exp(0.77×Cr)×exp(3.0×Mo)×exp(4.6×V) (2).
Inventors:
YAMAMOTO YUICHIRO
TAKESHITA YUKITERU
KIRIYAMA KENTARO
KATO TAKANORI
TAKESHITA YUKITERU
KIRIYAMA KENTARO
KATO TAKANORI
Application Number:
JP2012102821A
Publication Date:
November 14, 2013
Filing Date:
April 27, 2012
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C22C38/00; C22C38/46; C21D9/34
Attorney, Agent or Firm:
Mikiji Sugioka
Chihara
Chihara