| abstract |
Provided is a steel sheet for nitriding, having excellent formability and punchability. The steel sheet for nitriding has: a composition comprising, in % by mass, 0.02%-0.08% C, no more than 0.1% Si, 0.2%-1.8% Mn, no more than 0.05% P, no more than 0.02% S, 0.01%-0.06% Al, 0.5%-1.5% Cr, and no more than 0.01% N, with the remainder being Fe and unavoidable impurities; and a structure having ferrite as the main phase thereof, having pearlite and/or bainite as the second phase thereof, having at least 70% of the entire structure comprising ferrite, the ferrite having an average crystal particle diameter of 5-25 µm, and the average major diameter in a cross section along the steel sheet rolling direction of the cementite present in the second phase being no more than 3.0 µm. |