| 摘要 |
An alloyed-molten-zinc-plated steel sheet which combines excellent processability with high strength. The alloyed-molten-zinc-plated steel sheet with excellent processability and high strength comprises: a high- strength steel sheet comprising, in terms of percent by weight, 0.05 to 0. 15% carbon, 0.3 to 2.0% silicon, 1.0 to 2.8% manganese, up to 0.03% phosphorus, up to 0.02% sulfur, 0.005 to 0.5% aluminum, up to 0.0060% nitrogen, and iron and unavoidable impurities as the remainder and satisfying the relationships (%Mn)/(%C)>= 12 and (%Si)/(%C)>= 4, wherein %C, %Si, and %M are the contents of carbon, silicon, and manganese, respectively; and a deposit layer formed thereon by dipping in a melt of an alloyed zinc comprising 0.05 to 0.5 wt.% aluminum, 5 to 15 wt.% iron, and zinc and unavoidable impurities as the remainder. It is characterized in that the tensile strength F (MPa) and the elongation L (%) satisfy the relationship L>= 52-0.035xF.
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