Patent ID: 8608873

Claim:
A stainless steel having a microstructure in the cold-rolled state of 8.5-13% by volume δ-ferrite and austenite as the remainder, and comprising (in % by weight): C: 0.05-0.14%; Si: 0.1-1.0%; Mn: 7.5-10.5%; Cr: >17.5-22.0%; Ni: 1.0-4.0%; Cu: 1.0-3.0%; N: 0.03-0.2%; P: max. 0.07%; S: max. 0.01%; Mo: max. 0.5%; optionally one or more elements from the group consisting of Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, and H wherein Ti: max. 0.02%; Nb: max. 0.1%; B: max. 0.004%; V: max. 0.1%; Al: 0.001-0.03%; Ca: 0.0005-0.003%; As: 0.003-0.015%; Sn: 0.003-0.01%; Pb: max. 0.01%; Bi: max. 0.01%; H: max. 0.0025%; and remainder Fe and unavoidable impurities.