Steel Sheet And Outer Panel Member

Abstract: Provided is a steel sheet that is characterized by: having a prescribed chemical composition; comprising, in terms of area%, 75 to 95% of ferrite, 5 to 25% of martensite and a total of 0 to 10% of at least one of bainite, pearlite and retained austenite; and having a metal structure in which the amount of Nb in all Nb carbonitrides is 0.004% or more, the amount of Nb in all Nb carbonitrides having particle sizes of 20 nm or more is 60% or more of the amount of Nb in all Nb carbonitrides, the average interparticle distance in the martensite is 2.5 µm or less, and the standard deviation of the areal ratio of martensite in the rolling direction and a direction perpendicular to the sheet thickness direction is 1.5% or less.

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