Patent ID: 7799148
Filing Date: 2010-09-21
Classification: C21D,C22C

Abstract:
1. An iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises Fe and inevitable impurities and, the contents being expressed by weight: 0.45%≦C≦0.75% 15%≦Mn≦26% Si≦3% Al≦0.050% S≦0.030% P≦0.080% N≦0.1%, at least one metal element selected from the group consisting of vanadium, titanium, niobium, chromium and molybdenum, where and, optionally, one or more elements selected from the group consisting of wherein the steel sheet comprises vanadium, the amount of vanadium in the form of precipitated carbides, nitrides or carbonitrides being: