AUSTENITIC STEEL HAVING HIGH STRENGTH AND FORMABILITY, METHOD OF PRODUCING SAID STEEL AND USE THEREOF

摘要

Substantially austenitic steel having high strength and good formability for cold rolling comprising (in weight percent) - 0.05 to 1.0 % C - 11.0 to 14.9% Mn - 1.0 to 5.0% Al - O to 2.5% Ni the remainder being iron and unavoidable impurities, wherein the microstructure comprises at least 75% in volume of austenite, and wherein (Ni+Mn) is from 11.0 to 15.9%