Steel sheet for hot pressing and hot-stamped part manufactured using same
AssigneeHyundai Steel Company
InventorsJae Min Lee, Sun Young Bae
Life of this patent
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Abstract
An embodiment of the present invention discloses a hot-stamped part including: a base steel sheet; and a plated layer provided on the base steel sheet and including zinc (Zn), magnesium (Mg), silicon (Si), aluminum (Al), strontium (Sr), and the balance of iron (Fe) and other inevitable impurities, wherein the plated layer includes an alloying blocking layer, an intermediate alloy layer, and a corrosion resistance reinforcement layer which are sequentially stacked from the base steel sheet, and the corrosion resistance reinforcement layer includes an Sr-containing surface oxide layer.
Claims15
A steel sheet for hot pressing comprising:
- a base steel sheet;
- and
- a plated layer arranged on the base steel sheet and comprising 20 wt % to 45 wt % of zinc (Zn), 0.2 wt % to 3 wt % of magnesium (Mg), 1 wt % to 5 wt % of silicon (Si), 0.01 wt % to 0.5 wt % of strontium (Sr), and the balance of aluminum (Al) and other inevitable impurities.
A hot-stamped part comprising:
- a base steel sheet;
- and
- a plated layer arranged on the base steel sheet and comprising zinc (Zn), magnesium (Mg), silicon (Si), aluminum (Al), strontium (Sr), and the balance of iron (Fe) and other inevitable impurities, wherein
- the plated layer comprises an alloying blocking layer, an intermediate alloy layer, and a corrosion resistance reinforcement layer, which are sequentially stacked from the base steel sheet, and
- the corrosion resistance reinforcement layer comprises a surface oxide layer including strontium (Sr).
Dependencies are inferred from the claim text.