Aluminum coated Steel sheet having excellent oxidation resistance and heat resistance

1. An aluminum coated steel sheet having excellent oxidation resistance and heat resistance, comprising: an aluminum coating layer formed on a surface of a steel sheet which comprises 0.001 to 0.015 wt % of carbon (C), 0.05 to 0.3 wt % of silicon (Si), 0.1 to 0.6 wt % of manganese (Mn), 0.01 to 0.05 wt % niobium (Nb), 0.01 wt % or less of phosphorus (P), 0.01 wt % or less of sulfur (S), 0.1 wt % or less of soluble aluminum (Al), 0.05 to 0.5 wt % of copper (Cu), 0.05 to 0.5 wt % nickel (Ni), 0.001 to 0.01 wt % of nitrogen (N), and the balance of Fe and inevitable impurities; and an alloy layer which comprises an intermetallic compound at an interface between the steel sheet and the aluminum coating layer,

wherein the intermetallic compound is a Cu—Ni—Fe(—Al—Si)-based intermetallic compound.

2. The aluminum coated steel sheet of claim 1 , wherein the alloy layer has a thickness of about 3 μm or less.

3. The aluminum coated steel sheet of claim 1 , wherein the aluminum coating layer comprises 5 to 11 wt % of silicon (Si) and the balance of aluminum (Al) and inevitable impurities.

4. The aluminum coated steel sheet of claim 1 , wherein the aluminum coating layer comprises 10 wt % or less of iron (Fe) and 50 wt % or more of aluminum (Al).

5. The aluminum coated steel sheet of claim 1 , wherein the aluminum coating layer has a thickness of 10 μm to 30 μm.