| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel sheet for hot stamping that can, while effectively securing the hardenability improving effect of the B addition even without the addition of Ti, improve the bendability after the processing.SOLUTION: The inventive steel sheet for hot stamping contains C: 0.1 to 0.4%, Si: 0% or more and 2.0% or less, Mn: 0.5 to 3.0%, P: 0.015% or less, S: 0.01% or less, B: 0.0003 to 0.01%, N: 0.05% or less, and Al in relation to Si content, in which Ti, Zr, Hf and Ta among the unavoidable impurities are each suppressed to 0.005% or less, as well as the nitride-based inclusions having circle equivalent diameter of 1 μm or more satisfy less than 0.10 per 1 mm.SELECTED DRAWING: None |
