Title:
NONQUENCHED AND TEMPERED STEEL WITH HIGH STRENGTH AND TOUGHNESS
Document Type and Number:
Japanese Patent JPS5852458
Kind Code:
A
Abstract:
PURPOSE: To obtain a nonquenched and tempered steel having high strength and toughness and usable as hot worked by adding specified percentages of C, Si, Mn, P, S, Al, V and N to Fe.
CONSTITUTION: A steel consisting of 0.25W0.55% C, 0.10W0.60% Si, 1.0W2.5% Mn, ≤0.02% P, ≤0.05% S, 0.005W0.05% Al, 0.08W0.15% V, 0.002W0.008% N and the balance Fe with inevitable impurities is prepared. The steel may further contain one or more among 0.20W0.60% Cr, 0.005W0.03% Nb and 0.005W0.03% Ti. This nonquenched and tempered steel with high toughness has high strength comparable to that of a conventional normalized steel.
Inventors:
KOSHIZUKA NORIAKI
MINE KIMIO
TANAKA TOMOO
MINE KIMIO
TANAKA TOMOO
Application Number:
JP14879181A
Publication Date:
March 28, 1983
Filing Date:
September 22, 1981
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
C22C38/00; C22C38/12; C22C38/28; (IPC1-7): C22C38/12; C22C38/28
Attorney, Agent or Firm:
Murata politics