STEEL FOIL AND METHOD FOR PRODUCING SAME

A steel foil according to an aspect of the present invention includes, by mass%, C: 0.0001 to 0.02%; Si: 0.001 to 0.01%; Mn: 0.01 to 0.3%; P: 0.001 to 0.02%; S: 0.0001 to 0.01%; Al: 0.0005 to 0.1%; N: 0.0001 to 0.004%; and a balance consisting of Fe and impurities, wherein a thickness is 5 to 15 µm, and a tensile strength is more than 900 MPa and 1,200 MPa or less.