HIGH-MANGANESE AUSTENITIC STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN GAS

WIPO Patent Application WO/2007/052773

A1

A high-manganese austenitic stainless steel which comprises, in terms of mass%, 0.01-0.10% C, 0.01-0.40% N, 0.1-1% Si, 10-20% Cr, 6-20% Mn, 2-5% Cu, 1-6% Ni, and Fe and unavoidable impurities as the remainder and in which the component proportions have been designed to enable the value of Md30, which is an index to austenite stability, to satisfy the relationship -120