Hot stamped steel
AssigneeNippon Steel Corporation
InventorsTakuya Mitsunobu, Kohei Tokuda, Takehiro Takahashi, Hiroshi Takebayashi
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AssigneeNippon Steel Corporation
InventorsTakuya Mitsunobu, Kohei Tokuda, Takehiro Takahashi, Hiroshi Takebayashi
Estimating the term…
A hot stamped steel includes a base material that is formed of steel, a plated layer that is formed on a surface of the base material, and a phosphate coating that is formed on a surface of the plated layer; chemical composition of the plated layer contains 20.00 to 45.00 mass % of Al, 10.00 to 45.00 mass % of Fe, 4.50 to 15.00 mass % of Mg, 0.10 to 3.00 mass % of Si, 0.05 to 3.00 mass % of Ca, and the plated layer may further contain one or more of Sb, Pb, Cu, Sn, Ti, Sr, Cr, Ni, and Mn with a remainder of Zn and impurities; the phosphate coating comprises zinc phosphate crystals containing 5.0 to 50.0 mass % of Mg and 0.5 to 5.0 mass % of Ca; and the adhesion amount of the phosphate coating per one surface is in a range of 0.1 to 10.0 g/m2.
A hot stamped steel comprising:
Dependencies are inferred from the claim text.